{"id":3366,"date":"2025-09-02T08:38:54","date_gmt":"2025-09-02T08:38:54","guid":{"rendered":"https:\/\/www.ketetransformer.com\/?post_type=product&#038;p=3366"},"modified":"2025-09-26T06:16:49","modified_gmt":"2025-09-26T06:16:49","slug":"factory-20kv-three-phase-liquid-filled-oil-immersed-distribution-transformer","status":"publish","type":"product","link":"https:\/\/www.ketetransformer.com\/es\/products\/factory-20kv-three-phase-liquid-filled-oil-immersed-distribution-transformer\/","title":{"rendered":"Transformador de distribuci\u00f3n trif\u00e1sico de f\u00e1brica, de 20 kV, de aceite, sumergido en l\u00edquido"},"content":{"rendered":"<div data-elementor-type=\"product-post\" data-elementor-id=\"3366\" class=\"elementor elementor-3366\" data-elementor-post-type=\"product\">\n\t\t\t\t<div class=\"elementor-element elementor-element-11e38e9 e-flex e-con-boxed e-con e-parent\" data-id=\"11e38e9\" data-element_type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-3df9cea e-n-tabs-mobile elementor-widget elementor-widget-n-tabs\" data-id=\"3df9cea\" data-element_type=\"widget\" data-settings=\"{&quot;tabs_justify_horizontal&quot;:&quot;start&quot;,&quot;horizontal_scroll&quot;:&quot;disable&quot;}\" data-widget_type=\"nested-tabs.default\">\n\t\t\t\t\t\t\t<div class=\"e-n-tabs\" data-widget-number=\"64986346\" aria-label=\"Pesta\u00f1as. Abre los elementos con la tecla Intro o la barra espaciadora, ci\u00e9rralos con la tecla Escape y navega por las fechas.\">\n\t\t\t<div class=\"e-n-tabs-heading\" role=\"tablist\">\n\t\t\t\t\t<button id=\"e-n-tab-title-649863461\" class=\"e-n-tab-title\" aria-selected=\"true\" data-tab-index=\"1\" role=\"tab\" tabindex=\"0\" aria-controls=\"e-n-tab-content-649863461\" style=\"--n-tabs-title-order: 1;\">\n\t\t\t\t\t\t<span class=\"e-n-tab-title-text\">\n\t\t\t\tBreve introducci\u00f3n\t\t\t<\/span>\n\t\t<\/button>\n\t\t\t\t<button id=\"e-n-tab-title-649863462\" class=\"e-n-tab-title\" aria-selected=\"false\" data-tab-index=\"2\" role=\"tab\" tabindex=\"-1\" aria-controls=\"e-n-tab-content-649863462\" style=\"--n-tabs-title-order: 2;\">\n\t\t\t\t\t\t<span class=\"e-n-tab-title-text\">\n\t\t\t\tCaracter\u00edstica\t\t\t<\/span>\n\t\t<\/button>\n\t\t\t\t<button id=\"e-n-tab-title-649863463\" class=\"e-n-tab-title\" aria-selected=\"false\" data-tab-index=\"3\" role=\"tab\" tabindex=\"-1\" aria-controls=\"e-n-tab-content-649863463\" style=\"--n-tabs-title-order: 3;\">\n\t\t\t\t\t\t<span class=\"e-n-tab-title-text\">\n\t\t\t\tEstructura\t\t\t<\/span>\n\t\t<\/button>\n\t\t\t\t<button id=\"e-n-tab-title-649863464\" class=\"e-n-tab-title\" aria-selected=\"false\" data-tab-index=\"4\" role=\"tab\" tabindex=\"-1\" aria-controls=\"e-n-tab-content-649863464\" style=\"--n-tabs-title-order: 4;\">\n\t\t\t\t\t\t<span class=\"e-n-tab-title-text\">\n\t\t\t\tDiagrama\t\t\t<\/span>\n\t\t<\/button>\n\t\t\t\t<button id=\"e-n-tab-title-649863465\" class=\"e-n-tab-title\" aria-selected=\"false\" data-tab-index=\"5\" role=\"tab\" tabindex=\"-1\" aria-controls=\"e-n-tab-content-649863465\" style=\"--n-tabs-title-order: 5;\">\n\t\t\t\t\t\t<span class=\"e-n-tab-title-text\">\n\t\t\t\tPreguntas frecuentes\t\t\t<\/span>\n\t\t<\/button>\n\t\t\t\t\t<\/div>\n\t\t\t<div class=\"e-n-tabs-content\">\n\t\t\t\t<div id=\"e-n-tab-content-649863461\" role=\"tabpanel\" aria-labelledby=\"e-n-tab-title-649863461\" data-tab-index=\"1\" style=\"--n-tabs-title-order: 1;\" class=\"e-active elementor-element elementor-element-63d4ba4 e-con-full e-flex e-con e-child\" data-id=\"63d4ba4\" data-element_type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-76c97e8 elementor-widget elementor-widget-heading\" data-id=\"76c97e8\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Breve introducci\u00f3n<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-40fb5fa elementor-widget elementor-widget-text-editor\" data-id=\"40fb5fa\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p><strong>\u2160<\/strong><strong>.Breve introducci\u00f3n<\/strong><\/p><p><strong>1.<\/strong><strong>Normas:<\/strong> IEC 60076-7:2018, GB\/T 1094.7-2024, GB\/T 6451-2023<\/p><p><strong>2.<\/strong><strong>Potencia nominal:<\/strong> 30 kVA-2 500 kVA<\/p><p><strong>3.<\/strong><strong>Tensi\u00f3n primaria:<\/strong> 20 kV<\/p><p><strong>4.<\/strong><strong>Tensi\u00f3n secundaria:<\/strong> 0,4 kV o seg\u00fan sea necesario<\/p><p><strong>5. Modo de regulaci\u00f3n de tensi\u00f3n:<\/strong> cambio de tomas fuera de circuito<\/p><p><strong>6. Frecuencia:<\/strong> 50 Hz o 60 Hz<\/p><p><strong>7.<\/strong><strong>Tipo:<\/strong> Transformador el\u00e9ctrico trif\u00e1sico<\/p><p><strong>8.<\/strong><strong>Tipo de conexi\u00f3n:<\/strong> Dyn11, Yyn0 o seg\u00fan las especificaciones del cliente<\/p><p><strong>9. Grado de aislamiento:<\/strong>A<\/p><p><strong>10. M\u00e9todo de refrigeraci\u00f3n:<\/strong> ON\u00c1N<\/p><p><strong>\u2161<\/strong><strong>.Condiciones de trabajo<\/strong><\/p><p><strong>1.<\/strong><strong>Temperatura ambiente:<\/strong> No m\u00e1s de +40 \u2103. No menos de -25 \u2103. La temperatura media mensual no supera los +30 \u2103. La temperatura media anual no supera los +20 \u2103.<\/p><p><strong>2.<\/strong><strong>Altitud:<\/strong> No m\u00e1s de 1000 m.<\/p><p><strong>3.<\/strong><strong>Humedad relativa del aire:<\/strong>\u226490%<\/p><p><strong>4.<\/strong><strong>lugar de instalaci\u00f3n:<\/strong> Sin gases corrosivos, sin suciedad visible<\/p><p><strong>5. \u00c1mbito de aplicaci\u00f3n:<\/strong> Transmisi\u00f3n y distribuci\u00f3n de energ\u00eda, producci\u00f3n industrial y suministro de energ\u00eda para exteriores.<\/p><p><strong>\u2162<\/strong><strong>.Las pruebas para transformadores sumergidos en aceite<\/strong><\/p><p>Las pruebas que se realizan en nuestra empresa a los transformadores sumergidos en aceite pueden dividirse en cuatro categor\u00edas en funci\u00f3n de la fase y la finalidad de las mismas: pruebas de f\u00e1brica, pruebas de tipo, pruebas in situ y pruebas preventivas.<\/p><p><strong>1.<\/strong><strong>Pruebas de f\u00e1brica (pruebas de verificaci\u00f3n durante la fabricaci\u00f3n)<\/strong><\/p><p>Entre ellas destacan: la medici\u00f3n de la resistencia de aislamiento, la medici\u00f3n de la resistencia en corriente continua, la medici\u00f3n de la relaci\u00f3n de transformaci\u00f3n, la comprobaci\u00f3n del grupo de conexi\u00f3n y la polaridad, la prueba en vac\u00edo, la prueba del aceite aislante y la prueba de estanqueidad.<\/p><p><strong>2<\/strong><strong>.Pruebas de tipo (pruebas de verificaci\u00f3n del dise\u00f1o)<\/strong><\/p><p>Entre ellas se incluyen principalmente: ensayo de aumento de temperatura, ensayo de resistencia del aislamiento, ensayo de resistencia a cortocircuitos, ensayo de impedancia de secuencia cero, medici\u00f3n del nivel sonoro, ensayo de resistencia mec\u00e1nica del dep\u00f3sito y medici\u00f3n de arm\u00f3nicos de la corriente en vac\u00edo.<\/p><p><strong>3.<\/strong><strong>Pruebas in situ (pruebas de aceptaci\u00f3n tras la instalaci\u00f3n)<\/strong><\/p><p>Entre ellas se incluyen principalmente: inspecci\u00f3n visual, medici\u00f3n de la resistencia en corriente continua, nueva comprobaci\u00f3n de la relaci\u00f3n de transformaci\u00f3n y del grupo de conexi\u00f3n, ensayo de tensi\u00f3n de ruptura del aceite aislante y de p\u00e9rdidas diel\u00e9ctricas, ensayo de resistencia a la tensi\u00f3n de frecuencia industrial (parcial) y ensayo de funcionamiento del conmutador de tomas.<\/p><p><strong>4<\/strong><strong>.Pruebas preventivas (pruebas de mantenimiento durante el funcionamiento)<\/strong><\/p><p>Entre ellas destacan: la medici\u00f3n de la resistencia de aislamiento y del \u00edndice de polarizaci\u00f3n, la medici\u00f3n de la resistencia en corriente continua de los devanados, la medici\u00f3n del factor de p\u00e9rdida diel\u00e9ctrica (tan\u03b4), el ensayo del aceite aislante, la medici\u00f3n de descargas parciales, la medici\u00f3n de la corriente de puesta a tierra del n\u00facleo de hierro, el ensayo de los pasamuros y la detecci\u00f3n mediante termograf\u00eda infrarroja.<\/p><p>Los tipos de ensayos para transformadores sumergidos en aceite abarcan todo el ciclo de vida, desde la fabricaci\u00f3n y la instalaci\u00f3n hasta el funcionamiento y el mantenimiento. El enfoque de las pruebas var\u00eda seg\u00fan las distintas fases: las pruebas de f\u00e1brica garantizan un rendimiento b\u00e1sico adecuado; las pruebas de tipo verifican los l\u00edmites de dise\u00f1o; las pruebas in situ garantizan la calidad de la instalaci\u00f3n; y las pruebas preventivas evitan fallos de funcionamiento. En conjunto, estas pruebas constituyen una garant\u00eda importante para el funcionamiento seguro y fiable de los transformadores.<\/p><p><strong>\u2163<\/strong><strong>.<\/strong><strong>Inspecci\u00f3n de los componentes de un transformador sumergido en aceite<\/strong><\/p><p>La inspecci\u00f3n de los componentes de los transformadores sumergidos en aceite es un eslab\u00f3n fundamental para garantizar su funcionamiento seguro y estable, y comprende principalmente los siguientes aspectos:<\/p><p><strong>1.<\/strong><strong>Inspecci\u00f3n visual:<\/strong> Comprueba que el transformador presente un aspecto intacto, que no haya fugas de aceite en el dep\u00f3sito y que las piezas, como las cajas de conexiones, los pasamuros aislantes y los cables, no est\u00e9n da\u00f1adas, oxidadas ni sueltas. Al mismo tiempo, comprueba que los componentes, como los radiadores, los conservadores de aceite, los respiraderos y los indicadores de nivel de aceite, se encuentren en condiciones normales.<\/p><p><strong>2.<\/strong><strong>Inspecci\u00f3n del aislamiento:<\/strong> Utilice un comprobador de resistencia de aislamiento para medir la resistencia de aislamiento entre los devanados y tierra, as\u00ed como entre los propios devanados; los valores medidos deben cumplir con las normas especificadas. Adem\u00e1s, realice ensayos de rigidez diel\u00e9ctrica y de polarizaci\u00f3n del aceite aislante para evaluar el rendimiento del aislamiento.<\/p><p><strong>3.<\/strong><strong>Inspecci\u00f3n del funcionamiento mec\u00e1nico:<\/strong> Comprueba si los equipos principales, como ventiladores, refrigeradores, v\u00e1lvulas de alivio de presi\u00f3n y v\u00e1lvulas reguladoras de tensi\u00f3n, funcionan con normalidad. Aseg\u00farate de que los casquillos, los pernos de uni\u00f3n y las regletas de bornes no est\u00e9n sueltos, con el fin de garantizar el funcionamiento normal de los componentes mec\u00e1nicos.<\/p><p><strong>4.<\/strong><strong>Inspecci\u00f3n de la calidad del aceite:<\/strong> Observa el color, el olor y la transparencia del aceite de transformador, y comprueba si hay impurezas mezcladas. Realiza un muestreo de aceite tipo \u00abtorre\u00bb para inspeccionar los sedimentos y los contaminantes. Adem\u00e1s, realiza ensayos al aceite de transformador, como la tensi\u00f3n de ruptura, el \u00edndice de acidez, el factor de p\u00e9rdida diel\u00e9ctrica, el contenido de humedad y el tama\u00f1o de las part\u00edculas, para determinar si la calidad del aceite es buena.<\/p><p><strong>5.<\/strong><strong>Detecci\u00f3n de descargas parciales:<\/strong> Utilice detectores de descargas parciales, como la instalaci\u00f3n de sensores de UHF o el uso de transformadores de corriente de alta frecuencia y sensores ultras\u00f3nicos, para detectar partes del transformador, como los devanados y los pasacables aislantes, y localizar la posici\u00f3n de la fuente de descarga. Si la intensidad de la descarga parcial supera el valor especificado, es necesario evaluar el riesgo para el aislamiento.<\/p><p><strong>6.<\/strong><strong>Comprobaci\u00f3n de la temperatura del aceite:<\/strong> Comprueba si las indicaciones de los medidores in situ de la temperatura del aceite de la capa superior del transformador y de las temperaturas alta y baja de los devanados coinciden con las lecturas del panel de control o de la pantalla CRT. Verifica si todas las temperaturas son normales y si se acercan a los l\u00edmites m\u00e1ximos permitidos o los superan. Al mismo tiempo, toque con la mano la superficie de los tubos radiantes para comprobar si el dispositivo de refrigeraci\u00f3n se encuentra en buen estado.<\/p><p><strong>7.<\/strong><strong>Comprobaci\u00f3n de tensi\u00f3n y corriente:<\/strong> Comprueba si la tensi\u00f3n y la corriente en el lado de alta tensi\u00f3n y en el de baja tensi\u00f3n del transformador se encuentran dentro de los l\u00edmites normales. Por lo general, la tensi\u00f3n en el lado de alta tensi\u00f3n no debe superar el 105% del valor de tensi\u00f3n nominal de la toma correspondiente, para garantizar que el transformador funcione dentro de los par\u00e1metros nominales.<\/p><p><strong>8.<\/strong><strong>Inspecci\u00f3n ac\u00fastica:<\/strong> Un transformador que funciona con normalidad emite un \u201czumbido\u201d uniforme. Durante la inspecci\u00f3n, presta atenci\u00f3n a la presencia de ruidos an\u00f3malos, como chirridos o crujidos. Los ruidos an\u00f3malos pueden deberse a fallos internos, a piezas sueltas u otras causas.<\/p><p><strong>\u2164<\/strong><strong>.<\/strong><strong>Certificado: <\/strong>CE, UL, ISO, SGS, CCC<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div id=\"e-n-tab-content-649863462\" role=\"tabpanel\" aria-labelledby=\"e-n-tab-title-649863462\" data-tab-index=\"2\" style=\"--n-tabs-title-order: 2;\" class=\"elementor-element elementor-element-2e2154e e-con-full e-flex e-con e-child\" data-id=\"2e2154e\" data-element_type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-0f27574 elementor-widget elementor-widget-heading\" data-id=\"0f27574\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Caracter\u00edsticas estructurales<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-f30b232 elementor-widget elementor-widget-text-editor\" data-id=\"f30b232\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p><strong>\u2160.<\/strong><strong>Caracter\u00edsticas del producto<\/strong><\/p><p>1. El n\u00facleo de hierro est\u00e1 fabricado con chapas de acero al silicio de alta calidad y alto rendimiento, con una elevada permeabilidad magn\u00e9tica, lo que se traduce en bajas p\u00e9rdidas en vac\u00edo.<\/p><p>2. Todos los devanados de alta tensi\u00f3n adoptan una estructura cil\u00edndrica multicapa para mejorar la distribuci\u00f3n del impulso de tensi\u00f3n en los devanados. Los devanados de baja tensi\u00f3n, con un rango de potencia de entre 30 kVA y 4 000 kVA, utilizan una estructura cil\u00edndrica o en espiral. Se caracterizan por su elevada resistencia mec\u00e1nica, una distribuci\u00f3n equilibrada de amperios-vueltas y una gran resistencia a los cortocircuitos.<\/p><p>3. En el interior del transformador se ha instalado una estructura fija para evitar que se desplace durante el transporte. Todos los elementos de fijaci\u00f3n est\u00e1n provistos de tuercas de seguridad para garantizar que no se aflojen durante un funcionamiento prolongado.<\/p><p>4. Este producto presenta una estructura totalmente sellada. Durante el embalaje, se aplica un proceso de llenado de aceite al vac\u00edo para eliminar por completo la humedad del transformador, lo que garantiza el aislamiento entre el aceite del transformador y el aire exterior, evita el envejecimiento del aceite y mejora la fiabilidad operativa del transformador.<\/p><p>5. El producto est\u00e1 equipado con una v\u00e1lvula de alivio de presi\u00f3n, un term\u00f3metro indicador, un rel\u00e9 de gas, etc., para garantizar el funcionamiento seguro del transformador.<\/p><p>6. Este producto utiliza un dep\u00f3sito de aceite corrugado. Este tipo de dep\u00f3sito es f\u00e1cil de fabricar, presenta una elevada resistencia mec\u00e1nica, permite obtener buenos resultados de soldadura y es estanco. Adem\u00e1s, gracias a la gran fluidez del aceite, se mejora la capacidad de disipaci\u00f3n del calor del producto.<\/p><p>7. La superficie del transformador de potencia sumergido en aceite se somete a un tratamiento de desengrasado, eliminaci\u00f3n de \u00f3xido y fosfatado, tras lo cual se aplica una capa de imprimaci\u00f3n y una capa de acabado.<\/p><p>8. Este producto puede satisfacer los requisitos operativos espec\u00edficos de sectores como la metalurgia y la petroqu\u00edmica, as\u00ed como las necesidades operativas espec\u00edficas de entornos h\u00famedos y sucios.<\/p><p><strong>\u2161<\/strong><strong>.<\/strong><strong>Producto <\/strong><strong>Ventajas<\/strong><\/p><p>1. Alta eficiencia en la disipaci\u00f3n del calor, adecuada para aplicaciones de gran capacidad. La conductividad t\u00e9rmica del aceite aislante (aceite mineral o sint\u00e9tico) es muy superior a la del aire (el principal medio de disipaci\u00f3n del calor en los transformadores de tipo seco). Adem\u00e1s, el calor procedente de los devanados y los n\u00facleos de hierro puede eliminarse r\u00e1pidamente mediante la convecci\u00f3n natural del aceite o la circulaci\u00f3n forzada (por ejemplo, mediante bombas de aceite y radiadores).<\/p><p>2. Excelente rendimiento aislante y gran resistencia a la alta tensi\u00f3n. La intensidad de campo de ruptura del aceite aislante (entre 25 y 35 kV\/mm aproximadamente) es superior a la del aire (unos 3 kV\/mm), lo que permite ofrecer una protecci\u00f3n aislante m\u00e1s fiable en condiciones de alta tensi\u00f3n.<\/p><p>3. Bajo coste y alta relaci\u00f3n coste-rendimiento. El coste de la materia prima del aceite aislante es inferior al de los materiales aislantes, como la resina epoxi y el papel Nomex, que se utilizan en los transformadores de tipo seco. Adem\u00e1s, el proceso de fabricaci\u00f3n de los transformadores sumergidos en aceite (como la encapsulaci\u00f3n del n\u00facleo de hierro y los devanados) es relativamente sencillo, lo que se traduce en menores costes de producci\u00f3n y fabricaci\u00f3n.<\/p><p>4. Ciclo de mantenimiento prolongado y buena resistencia a la intemperie. El aceite aislante tiene un efecto sellador y protector, lo que permite aislar los devanados y los n\u00facleos de hierro de la erosi\u00f3n causada por la humedad y el polvo del aire, y reducir la velocidad de envejecimiento oxidativo. El mantenimiento diario consiste principalmente en la comprobaci\u00f3n peri\u00f3dica de la calidad del aceite (como la p\u00e9rdida diel\u00e9ctrica y el contenido de agua) y la sustituci\u00f3n del aceite aislante, con un ciclo que suele oscilar entre 1 y 3 a\u00f1os. Cuando se instala al aire libre, el dep\u00f3sito de aceite cerrado del transformador sumergido en aceite puede resistir el impacto de los elementos naturales, como la lluvia, la nieve y las altas temperaturas, lo que lo hace adecuado para entornos al aire libre en zonas rurales y suburbanas.<\/p><p>5. Gran capacidad de sobrecarga. El aceite aislante tiene una gran capacidad t\u00e9rmica. Durante una sobrecarga de corta duraci\u00f3n (como en los periodos de m\u00e1ximo consumo el\u00e9ctrico), la temperatura del aceite aumenta lentamente y puede soportar cargas que superen la capacidad nominal durante un determinado periodo de tiempo.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div id=\"e-n-tab-content-649863463\" role=\"tabpanel\" aria-labelledby=\"e-n-tab-title-649863463\" data-tab-index=\"3\" style=\"--n-tabs-title-order: 3;\" class=\"elementor-element elementor-element-764f307 e-con-full e-flex e-con e-child\" data-id=\"764f307\" data-element_type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-9872304 elementor-widget elementor-widget-heading\" data-id=\"9872304\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Estructura del producto<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-b1b2cc5 elementor-widget elementor-widget-text-editor\" data-id=\"b1b2cc5\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p>Los procesos principales pueden dividirse en cinco etapas principales: fabricaci\u00f3n de los componentes principales, montaje final, tratamiento de aislamiento, llenado de aceite y tratamiento al vac\u00edo, y pruebas de detecci\u00f3n. Los procedimientos espec\u00edficos son los siguientes:<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-5474a64 e-flex e-con-boxed e-con e-child\" data-id=\"5474a64\" data-element_type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-24a71fc elementor-widget__width-initial elementor-widget elementor-widget-text-editor\" data-id=\"24a71fc\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p><strong>\u2160.<\/strong><strong>Fabricaci\u00f3n de componentes b\u00e1sicos<\/strong><\/p><p>Los componentes principales de los transformadores sumergidos en aceite son el n\u00facleo de hierro, los devanados y el dep\u00f3sito de aceite. La precisi\u00f3n en la fabricaci\u00f3n de estos tres componentes influye directamente en el rendimiento del transformador.<\/p><p><strong>1.<\/strong><strong>Fabricaci\u00f3n de n\u00facleos de hierro<\/strong><\/p><p>Corte de chapas de acero al silicio, laminado y prensado, secado del n\u00facleo de hierro, uni\u00f3n y pulido.<\/p><p><strong>2.<\/strong><strong>Fabricaci\u00f3n de bobinas<\/strong><\/p><p>Procesamiento de conductores, tecnolog\u00eda de bobinado, presecado y conformado.<\/p><p><strong>3.<\/strong><strong>Fabricaci\u00f3n de dep\u00f3sitos de aceite y accesorios<\/strong><\/p><p>Soldadura de dep\u00f3sitos de aceite, mecanizado de estructuras de disipaci\u00f3n de calor y montaje de accesorios.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-4144565 e-con-full e-flex e-con e-child\" data-id=\"4144565\" data-element_type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-4d5efec elementor-widget elementor-widget-image\" data-id=\"4d5efec\" data-element_type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img fetchpriority=\"high\" decoding=\"async\" width=\"1024\" height=\"574\" src=\"https:\/\/www.ketetransformer.com\/wp-content\/uploads\/2025\/08\/10kV_SH15_SH21_SH25_Oil-immersed_Amorphous_Alloy_Distribution_Transformer1WH_1000x1000px_WH_1000x1000px1_WH_1000x1000px-1024x574.webp\" class=\"attachment-large size-large wp-image-4610\" alt=\"\" srcset=\"https:\/\/www.ketetransformer.com\/wp-content\/uploads\/2025\/08\/10kV_SH15_SH21_SH25_Oil-immersed_Amorphous_Alloy_Distribution_Transformer1WH_1000x1000px_WH_1000x1000px1_WH_1000x1000px-1024x574.webp 1024w, https:\/\/www.ketetransformer.com\/wp-content\/uploads\/2025\/08\/10kV_SH15_SH21_SH25_Oil-immersed_Amorphous_Alloy_Distribution_Transformer1WH_1000x1000px_WH_1000x1000px1_WH_1000x1000px-300x168.webp 300w, https:\/\/www.ketetransformer.com\/wp-content\/uploads\/2025\/08\/10kV_SH15_SH21_SH25_Oil-immersed_Amorphous_Alloy_Distribution_Transformer1WH_1000x1000px_WH_1000x1000px1_WH_1000x1000px-768x431.webp 768w, https:\/\/www.ketetransformer.com\/wp-content\/uploads\/2025\/08\/10kV_SH15_SH21_SH25_Oil-immersed_Amorphous_Alloy_Distribution_Transformer1WH_1000x1000px_WH_1000x1000px1_WH_1000x1000px-600x337.webp 600w, https:\/\/www.ketetransformer.com\/wp-content\/uploads\/2025\/08\/10kV_SH15_SH21_SH25_Oil-immersed_Amorphous_Alloy_Distribution_Transformer1WH_1000x1000px_WH_1000x1000px1_WH_1000x1000px.webp 1312w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-316f71b e-flex e-con-boxed e-con e-child\" data-id=\"316f71b\" data-element_type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-5a64ba5 elementor-widget__width-initial elementor-widget elementor-widget-image\" data-id=\"5a64ba5\" data-element_type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img decoding=\"async\" width=\"1024\" height=\"576\" src=\"https:\/\/www.ketetransformer.com\/wp-content\/uploads\/2025\/08\/10kV_SH15_SH21_SH25_Oil-immersed_Amorphous_Alloy_Distribution_Transformer1WH_2000x1000px_WH_1000x1000px1_WH_1000x1000px-1024x576.webp\" class=\"attachment-large size-large wp-image-4614\" alt=\"\" srcset=\"https:\/\/www.ketetransformer.com\/wp-content\/uploads\/2025\/08\/10kV_SH15_SH21_SH25_Oil-immersed_Amorphous_Alloy_Distribution_Transformer1WH_2000x1000px_WH_1000x1000px1_WH_1000x1000px-1024x576.webp 1024w, https:\/\/www.ketetransformer.com\/wp-content\/uploads\/2025\/08\/10kV_SH15_SH21_SH25_Oil-immersed_Amorphous_Alloy_Distribution_Transformer1WH_2000x1000px_WH_1000x1000px1_WH_1000x1000px-300x169.webp 300w, https:\/\/www.ketetransformer.com\/wp-content\/uploads\/2025\/08\/10kV_SH15_SH21_SH25_Oil-immersed_Amorphous_Alloy_Distribution_Transformer1WH_2000x1000px_WH_1000x1000px1_WH_1000x1000px-768x432.webp 768w, https:\/\/www.ketetransformer.com\/wp-content\/uploads\/2025\/08\/10kV_SH15_SH21_SH25_Oil-immersed_Amorphous_Alloy_Distribution_Transformer1WH_2000x1000px_WH_1000x1000px1_WH_1000x1000px-600x338.webp 600w, https:\/\/www.ketetransformer.com\/wp-content\/uploads\/2025\/08\/10kV_SH15_SH21_SH25_Oil-immersed_Amorphous_Alloy_Distribution_Transformer1WH_2000x1000px_WH_1000x1000px1_WH_1000x1000px.webp 1536w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-415ab2d elementor-widget__width-initial elementor-widget elementor-widget-text-editor\" data-id=\"415ab2d\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p><strong>\u2161.<\/strong><strong>Montaje final<\/strong><\/p><p>El montaje de los componentes principales \u2014como el n\u00facleo de hierro, los devanados y los aislantes\u2014 para formar un transformador integrado es un paso clave para garantizar la estabilidad estructural y la fiabilidad del aislamiento, lo que incluye el montaje del n\u00facleo, la instalaci\u00f3n de los cables de conexi\u00f3n, la fijaci\u00f3n general y el secado del n\u00facleo.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-3a0ed7f e-flex e-con-boxed e-con e-child\" data-id=\"3a0ed7f\" data-element_type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-8c7e7b3 elementor-widget__width-initial elementor-widget elementor-widget-text-editor\" data-id=\"8c7e7b3\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p><strong>\u2162.<\/strong><strong>Llenado de aceite y tratamiento al vac\u00edo<\/strong><\/p><p>Pretratamiento del aceite aislante, filtraci\u00f3n, deshidrataci\u00f3n y desgasificaci\u00f3n al vac\u00edo, llenado de aceite al vac\u00edo y circulaci\u00f3n de aceite caliente.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-e8418c8 e-con-full e-flex e-con e-child\" data-id=\"e8418c8\" data-element_type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-6b4fa40 elementor-widget elementor-widget-image\" data-id=\"6b4fa40\" data-element_type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img decoding=\"async\" width=\"1024\" height=\"576\" src=\"https:\/\/www.ketetransformer.com\/wp-content\/uploads\/2025\/09\/10kV_SH15_SH21_SH25_Oil-immersed_Amorphous_Alloy_Distribution_Transformer1WH_3000x1000px_WH_1000x1000px1_WH_1000x1000px-1024x576.png\" class=\"attachment-large size-large wp-image-4646\" alt=\"\" srcset=\"https:\/\/www.ketetransformer.com\/wp-content\/uploads\/2025\/09\/10kV_SH15_SH21_SH25_Oil-immersed_Amorphous_Alloy_Distribution_Transformer1WH_3000x1000px_WH_1000x1000px1_WH_1000x1000px-1024x576.png 1024w, https:\/\/www.ketetransformer.com\/wp-content\/uploads\/2025\/09\/10kV_SH15_SH21_SH25_Oil-immersed_Amorphous_Alloy_Distribution_Transformer1WH_3000x1000px_WH_1000x1000px1_WH_1000x1000px-300x169.png 300w, https:\/\/www.ketetransformer.com\/wp-content\/uploads\/2025\/09\/10kV_SH15_SH21_SH25_Oil-immersed_Amorphous_Alloy_Distribution_Transformer1WH_3000x1000px_WH_1000x1000px1_WH_1000x1000px-768x432.png 768w, https:\/\/www.ketetransformer.com\/wp-content\/uploads\/2025\/09\/10kV_SH15_SH21_SH25_Oil-immersed_Amorphous_Alloy_Distribution_Transformer1WH_3000x1000px_WH_1000x1000px1_WH_1000x1000px-600x338.png 600w, https:\/\/www.ketetransformer.com\/wp-content\/uploads\/2025\/09\/10kV_SH15_SH21_SH25_Oil-immersed_Amorphous_Alloy_Distribution_Transformer1WH_3000x1000px_WH_1000x1000px1_WH_1000x1000px.png 1536w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-db9ebd4 e-flex e-con-boxed e-con e-child\" data-id=\"db9ebd4\" data-element_type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-0c75ed8 elementor-widget__width-initial elementor-widget elementor-widget-image\" data-id=\"0c75ed8\" data-element_type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"576\" src=\"https:\/\/www.ketetransformer.com\/wp-content\/uploads\/2025\/09\/10kV_SH15_SH21_SH25_Oil-immersed_Amorphous_Alloy_Distribution_Transformer1WH_4000x1000px_WH_1000x1000px1_WH_1000x1000px-1024x576.png\" class=\"attachment-large size-large wp-image-4647\" alt=\"\" srcset=\"https:\/\/www.ketetransformer.com\/wp-content\/uploads\/2025\/09\/10kV_SH15_SH21_SH25_Oil-immersed_Amorphous_Alloy_Distribution_Transformer1WH_4000x1000px_WH_1000x1000px1_WH_1000x1000px-1024x576.png 1024w, https:\/\/www.ketetransformer.com\/wp-content\/uploads\/2025\/09\/10kV_SH15_SH21_SH25_Oil-immersed_Amorphous_Alloy_Distribution_Transformer1WH_4000x1000px_WH_1000x1000px1_WH_1000x1000px-300x169.png 300w, https:\/\/www.ketetransformer.com\/wp-content\/uploads\/2025\/09\/10kV_SH15_SH21_SH25_Oil-immersed_Amorphous_Alloy_Distribution_Transformer1WH_4000x1000px_WH_1000x1000px1_WH_1000x1000px-768x432.png 768w, https:\/\/www.ketetransformer.com\/wp-content\/uploads\/2025\/09\/10kV_SH15_SH21_SH25_Oil-immersed_Amorphous_Alloy_Distribution_Transformer1WH_4000x1000px_WH_1000x1000px1_WH_1000x1000px-600x338.png 600w, https:\/\/www.ketetransformer.com\/wp-content\/uploads\/2025\/09\/10kV_SH15_SH21_SH25_Oil-immersed_Amorphous_Alloy_Distribution_Transformer1WH_4000x1000px_WH_1000x1000px1_WH_1000x1000px.png 1536w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-61c2596 elementor-widget__width-initial elementor-widget elementor-widget-text-editor\" data-id=\"61c2596\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p><strong>\u2163.<\/strong><strong>Tratamiento general de sellado y acabado est\u00e9tico<\/strong><\/p><p><strong>1.<\/strong><strong>Pruebas de estanqueidad:<\/strong> Tras el llenado de aceite, se deja reposar el transformador durante 24 horas. Se comprueba que no haya fugas en las soldaduras del dep\u00f3sito y en las uniones de los accesorios (utilizando agua jabonosa para detectar burbujas). Los puntos de fuga se reparan mediante soldadura o sustituyendo las juntas.<\/p><p><strong>2.<\/strong><strong>Tratamiento est\u00e9tico:<\/strong> La superficie del dep\u00f3sito se desoxida, se fosfatiza y, a continuaci\u00f3n, se pinta con pintura antioxidante y una capa de acabado (los productos para exteriores requieren recubrimientos resistentes a la intemperie).<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-5fc33e8 e-flex e-con-boxed e-con e-child\" data-id=\"5fc33e8\" data-element_type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-4652b00 elementor-widget__width-initial elementor-widget elementor-widget-text-editor\" data-id=\"4652b00\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p><strong>\u2164.<\/strong><strong>Detecci\u00f3n de pruebas<\/strong><\/p><p>Tras su fabricaci\u00f3n, los transformadores deben superar rigurosas pruebas para garantizar que cumplen los requisitos de rendimiento, entre las que se incluyen pruebas rutinarias, pruebas de tipo y pruebas especiales.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-1c25d91 elementor-widget__width-initial elementor-widget elementor-widget-image\" data-id=\"1c25d91\" data-element_type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"576\" src=\"https:\/\/www.ketetransformer.com\/wp-content\/uploads\/2025\/08\/10kV_SH15_SH21_SH25_Oil-immersed_Amorphous_Alloy_Distribution_Transformer1WH_5000x1000px_WH_1000x1000px1_WH_1000x1000px_2-1024x576.webp\" class=\"attachment-large size-large wp-image-4620\" alt=\"\" srcset=\"https:\/\/www.ketetransformer.com\/wp-content\/uploads\/2025\/08\/10kV_SH15_SH21_SH25_Oil-immersed_Amorphous_Alloy_Distribution_Transformer1WH_5000x1000px_WH_1000x1000px1_WH_1000x1000px_2-1024x576.webp 1024w, https:\/\/www.ketetransformer.com\/wp-content\/uploads\/2025\/08\/10kV_SH15_SH21_SH25_Oil-immersed_Amorphous_Alloy_Distribution_Transformer1WH_5000x1000px_WH_1000x1000px1_WH_1000x1000px_2-300x169.webp 300w, https:\/\/www.ketetransformer.com\/wp-content\/uploads\/2025\/08\/10kV_SH15_SH21_SH25_Oil-immersed_Amorphous_Alloy_Distribution_Transformer1WH_5000x1000px_WH_1000x1000px1_WH_1000x1000px_2-768x432.webp 768w, https:\/\/www.ketetransformer.com\/wp-content\/uploads\/2025\/08\/10kV_SH15_SH21_SH25_Oil-immersed_Amorphous_Alloy_Distribution_Transformer1WH_5000x1000px_WH_1000x1000px1_WH_1000x1000px_2-600x338.webp 600w, https:\/\/www.ketetransformer.com\/wp-content\/uploads\/2025\/08\/10kV_SH15_SH21_SH25_Oil-immersed_Amorphous_Alloy_Distribution_Transformer1WH_5000x1000px_WH_1000x1000px1_WH_1000x1000px_2.webp 1536w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div id=\"e-n-tab-content-649863464\" role=\"tabpanel\" aria-labelledby=\"e-n-tab-title-649863464\" data-tab-index=\"4\" style=\"--n-tabs-title-order: 4;\" class=\"elementor-element elementor-element-53e5531 e-con-full e-flex e-con e-child\" data-id=\"53e5531\" data-element_type=\"container\">\n\t\t<div class=\"elementor-element elementor-element-bd32b31 e-flex e-con-boxed e-con e-child\" data-id=\"bd32b31\" data-element_type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-0f20ed0 elementor-widget elementor-widget-image\" data-id=\"0f20ed0\" data-element_type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"819\" src=\"https:\/\/www.ketetransformer.com\/wp-content\/uploads\/2025\/09\/06-35-10-0.4-1600kva\u4ee5\u4e0a-5-1024x819.webp\" class=\"attachment-large size-large wp-image-4868\" alt=\"\" srcset=\"https:\/\/www.ketetransformer.com\/wp-content\/uploads\/2025\/09\/06-35-10-0.4-1600kva\u4ee5\u4e0a-5-1024x819.webp 1024w, https:\/\/www.ketetransformer.com\/wp-content\/uploads\/2025\/09\/06-35-10-0.4-1600kva\u4ee5\u4e0a-5-300x240.webp 300w, https:\/\/www.ketetransformer.com\/wp-content\/uploads\/2025\/09\/06-35-10-0.4-1600kva\u4ee5\u4e0a-5-768x614.webp 768w, https:\/\/www.ketetransformer.com\/wp-content\/uploads\/2025\/09\/06-35-10-0.4-1600kva\u4ee5\u4e0a-5-1536x1229.webp 1536w, https:\/\/www.ketetransformer.com\/wp-content\/uploads\/2025\/09\/06-35-10-0.4-1600kva\u4ee5\u4e0a-5-600x480.webp 600w, https:\/\/www.ketetransformer.com\/wp-content\/uploads\/2025\/09\/06-35-10-0.4-1600kva\u4ee5\u4e0a-5.webp 1600w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-7d51807 elementor-widget elementor-widget-image\" data-id=\"7d51807\" data-element_type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"819\" src=\"https:\/\/www.ketetransformer.com\/wp-content\/uploads\/2025\/09\/07-35-10-0.4-3150kva\u4ee5\u4e0a-2-1024x819.webp\" class=\"attachment-large size-large wp-image-4869\" alt=\"\" srcset=\"https:\/\/www.ketetransformer.com\/wp-content\/uploads\/2025\/09\/07-35-10-0.4-3150kva\u4ee5\u4e0a-2-1024x819.webp 1024w, https:\/\/www.ketetransformer.com\/wp-content\/uploads\/2025\/09\/07-35-10-0.4-3150kva\u4ee5\u4e0a-2-300x240.webp 300w, https:\/\/www.ketetransformer.com\/wp-content\/uploads\/2025\/09\/07-35-10-0.4-3150kva\u4ee5\u4e0a-2-768x614.webp 768w, https:\/\/www.ketetransformer.com\/wp-content\/uploads\/2025\/09\/07-35-10-0.4-3150kva\u4ee5\u4e0a-2-1536x1229.webp 1536w, https:\/\/www.ketetransformer.com\/wp-content\/uploads\/2025\/09\/07-35-10-0.4-3150kva\u4ee5\u4e0a-2-600x480.webp 600w, https:\/\/www.ketetransformer.com\/wp-content\/uploads\/2025\/09\/07-35-10-0.4-3150kva\u4ee5\u4e0a-2.webp 1600w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div id=\"e-n-tab-content-649863465\" role=\"tabpanel\" aria-labelledby=\"e-n-tab-title-649863465\" data-tab-index=\"5\" style=\"--n-tabs-title-order: 5;\" class=\"elementor-element elementor-element-a681f0e e-con-full e-flex e-con e-child\" data-id=\"a681f0e\" data-element_type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-11bf213 elementor-widget elementor-widget-heading\" data-id=\"11bf213\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">     Preguntas frecuentes<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-692e57a elementor-widget__width-initial elementor-widget elementor-widget-text-editor\" data-id=\"692e57a\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p><strong>\u2160. Servicio de mantenimiento b\u00e1sico<\/strong><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-d080af3 elementor-widget elementor-widget-n-accordion\" data-id=\"d080af3\" data-element_type=\"widget\" data-settings=\"{&quot;default_state&quot;:&quot;all_collapsed&quot;,&quot;max_items_expended&quot;:&quot;multiple&quot;,&quot;n_accordion_animation_duration&quot;:{&quot;unit&quot;:&quot;ms&quot;,&quot;size&quot;:400,&quot;sizes&quot;:[]}}\" data-widget_type=\"nested-accordion.default\">\n\t\t\t\t\t\t\t<div class=\"e-n-accordion\" aria-label=\"Acorde\u00f3n. Abre los enlaces con la tecla Intro o la barra espaciadora, ci\u00e9rralos con la tecla Esc y navega con las teclas de flecha.\">\n\t\t\t\t\t\t<details id=\"e-n-accordion-item-2180\" class=\"e-n-accordion-item\" >\n\t\t\t\t<summary class=\"e-n-accordion-item-title\" data-accordion-index=\"1\" tabindex=\"0\" aria-expanded=\"false\" aria-controls=\"e-n-accordion-item-2180\" >\n\t\t\t\t\t<span class='e-n-accordion-item-title-header'><div class=\"e-n-accordion-item-title-text\"> 1. \u00bfCu\u00e1les son la tensi\u00f3n y la potencia nominales del transformador sumergido en aceite Kete? <\/div><\/span>\n\t\t\t\t\t\t\t<span class='e-n-accordion-item-title-icon'>\n\t\t\t<span class='e-opened' ><svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-angle-down\" viewbox=\"0 0 320 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M143 352.3L7 216.3c-9.4-9.4-9.4-24.6 0-33.9l22.6-22.6c9.4-9.4 24.6-9.4 33.9 0l96.4 96.4 96.4-96.4c9.4-9.4 24.6-9.4 33.9 0l22.6 22.6c9.4 9.4 9.4 24.6 0 33.9l-136 136c-9.2 9.4-24.4 9.4-33.8 0z\"><\/path><\/svg><\/span>\n\t\t\t<span class='e-closed'><svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-angle-right\" viewbox=\"0 0 256 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M224.3 273l-136 136c-9.4 9.4-24.6 9.4-33.9 0l-22.6-22.6c-9.4-9.4-9.4-24.6 0-33.9l96.4-96.4-96.4-96.4c-9.4-9.4-9.4-24.6 0-33.9L54.3 103c9.4-9.4 24.6-9.4 33.9 0l136 136c9.5 9.4 9.5 24.6.1 34z\"><\/path><\/svg><\/span>\n\t\t<\/span>\n\n\t\t\t\t\t\t<\/summary>\n\t\t\t\t<div role=\"region\" aria-labelledby=\"e-n-accordion-item-2180\" class=\"elementor-element elementor-element-05eeb49 e-con-full e-flex e-con e-child\" data-id=\"05eeb49\" data-element_type=\"container\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t\t<div class=\"elementor-element elementor-element-d60b237 elementor-widget elementor-widget-text-editor\" data-id=\"d60b237\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p><strong>\u2460<\/strong><strong>Tensi\u00f3n primaria (lado de alta tensi\u00f3n): <\/strong>Suelen oscilar entre 1 kV y 66 kV, con valores nominales habituales como 6 kV, 10 kV, 11 kV, 20 kV, 33 kV, 34,5 kV y 35 kV.<\/p><p><strong>\u2461<\/strong><strong>Tensi\u00f3n secundaria (lado de baja tensi\u00f3n): <\/strong>Entre las tensiones nominales secundarias m\u00e1s habituales se incluyen:<\/p><p>\u00b7400 V (0,4 kV) para el suministro industrial y residencial<\/p><p>\u00b711 kV o 33 kV<\/p><p><strong>\u2462<\/strong><strong>Personalizaci\u00f3n: <\/strong>Los transformadores pueden dise\u00f1arse para aplicaciones espec\u00edficas. Si tiene requisitos espec\u00edficos de potencia o necesidades de tensi\u00f3n, podemos dise\u00f1ar y personalizar transformadores a medida para satisfacer sus necesidades.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/details>\n\t\t\t\t\t\t<details id=\"e-n-accordion-item-2181\" class=\"e-n-accordion-item\" >\n\t\t\t\t<summary class=\"e-n-accordion-item-title\" data-accordion-index=\"2\" tabindex=\"-1\" aria-expanded=\"false\" aria-controls=\"e-n-accordion-item-2181\" >\n\t\t\t\t\t<span class='e-n-accordion-item-title-header'><div class=\"e-n-accordion-item-title-text\"> 2. \u00bfQu\u00e9 tipo de sistema de refrigeraci\u00f3n utiliza el transformador sumergido en aceite Kete? <\/div><\/span>\n\t\t\t\t\t\t\t<span class='e-n-accordion-item-title-icon'>\n\t\t\t<span class='e-opened' ><svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-angle-down\" viewbox=\"0 0 320 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M143 352.3L7 216.3c-9.4-9.4-9.4-24.6 0-33.9l22.6-22.6c9.4-9.4 24.6-9.4 33.9 0l96.4 96.4 96.4-96.4c9.4-9.4 24.6-9.4 33.9 0l22.6 22.6c9.4 9.4 9.4 24.6 0 33.9l-136 136c-9.2 9.4-24.4 9.4-33.8 0z\"><\/path><\/svg><\/span>\n\t\t\t<span class='e-closed'><svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-angle-right\" viewbox=\"0 0 256 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M224.3 273l-136 136c-9.4 9.4-24.6 9.4-33.9 0l-22.6-22.6c-9.4-9.4-9.4-24.6 0-33.9l96.4-96.4-96.4-96.4c-9.4-9.4-9.4-24.6 0-33.9L54.3 103c9.4-9.4 24.6-9.4 33.9 0l136 136c9.5 9.4 9.5 24.6.1 34z\"><\/path><\/svg><\/span>\n\t\t<\/span>\n\n\t\t\t\t\t\t<\/summary>\n\t\t\t\t<div role=\"region\" aria-labelledby=\"e-n-accordion-item-2181\" class=\"elementor-element elementor-element-9b6bfdb e-con-full e-flex e-con e-child\" data-id=\"9b6bfdb\" data-element_type=\"container\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t\t<div class=\"elementor-element elementor-element-3e23d10 elementor-widget elementor-widget-text-editor\" data-id=\"3e23d10\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p>Los transformadores de Kete sumergidos en aceite utilizan principalmente dos m\u00e9todos de refrigeraci\u00f3n habituales: ONAN y ONAF.<\/p><p>\u2460<strong>\u00c1mbito de aplicaci\u00f3n de ONAN<\/strong><\/p><p><strong>\u00b7<\/strong><strong>Transformadores de baja potencia<\/strong><\/p><p>Capacidad t\u00edpica de aplicaci\u00f3n: Se utiliza habitualmente para transformadores de la clase de 10 kV con una potencia de 500 kVA o inferior, y de la clase de 35 kV con una potencia de 1 000 kVA o inferior.<\/p><p>Motivo: Los transformadores de peque\u00f1a potencia presentan bajas p\u00e9rdidas (poca generaci\u00f3n de calor) y la disipaci\u00f3n natural del calor permite cumplir los requisitos de aumento de temperatura, adem\u00e1s de tener una estructura sencilla y un coste reducido.<\/p><p><strong>\u00b7<\/strong><strong>Casos en los que el entorno de instalaci\u00f3n no est\u00e1 bien configurado<\/strong><\/p><p>Adecuado para espacios abiertos al aire libre, salas de distribuci\u00f3n interiores bien ventiladas o zonas con bajas temperaturas ambientales.<\/p><p>Si se instala en espacios cerrados (como s\u00f3tanos), es necesario realizar una evaluaci\u00f3n adicional de las condiciones de disipaci\u00f3n del calor, y puede que sea necesario mejorar el m\u00e9todo de refrigeraci\u00f3n.<\/p><p><strong>\u00b7<\/strong><strong>Transformadores con baja tasa de carga o funcionamiento intermitente<\/strong><\/p><p>En el caso de los transformadores que permanecen en estado de carga ligera durante un periodo prolongado (\u00edndice de carga &lt; 50%), la capacidad de disipaci\u00f3n t\u00e9rmica del sistema ONAN resulta suficiente, sin que se produzca un gasto energ\u00e9tico innecesario derivado de la refrigeraci\u00f3n forzada.<\/p><p>\u2461<strong>\u00c1mbito de aplicaci\u00f3n de la ONAF<\/strong><\/p><p><strong>\u00b7<\/strong><strong>Transformadores de capacidad media y grande<\/strong><\/p><p>Capacidad t\u00edpica aplicable: clase de 10 kV con 800 kVA y superiores, y clase de 35 kV con 1 600 kVA y superiores para transformadores peque\u00f1os y medianos.<\/p><p>Motivo: Los transformadores de capacidad media y grande presentan p\u00e9rdidas elevadas (grandes p\u00e9rdidas en el cobre y en el hierro), y la disipaci\u00f3n natural del calor no basta para respetar el l\u00edmite de aumento de temperatura, por lo que se necesitan ventiladores para ayudar a mejorar la disipaci\u00f3n del calor.<\/p><p><strong>\u00b7<\/strong><strong>Transformadores con alta tasa de carga o funcionamiento continuo<\/strong><\/p><p>Adecuado para situaciones en las que se produce un funcionamiento a plena carga durante largos periodos o se producen grandes fluctuaciones de carga (en las que es necesario soportar sobrecargas de corta duraci\u00f3n), como los transformadores principales de las plantas industriales y los transformadores de distribuci\u00f3n en las redes de distribuci\u00f3n urbanas.<\/p><p><strong>\u00b7<\/strong><strong>Entornos con condiciones de disipaci\u00f3n de calor limitadas<\/strong><\/p><p>Si el transformador se instala en un entorno interior con poca ventilaci\u00f3n o en zonas con temperaturas ambientales elevadas (como las regiones tropicales), ONAF puede compensar la falta de disipaci\u00f3n natural del calor mediante una refrigeraci\u00f3n por aire forzado, evitando as\u00ed que la temperatura del aceite alcance niveles excesivos que puedan afectar a su vida \u00fatil.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/details>\n\t\t\t\t\t\t<details id=\"e-n-accordion-item-2182\" class=\"e-n-accordion-item\" >\n\t\t\t\t<summary class=\"e-n-accordion-item-title\" data-accordion-index=\"3\" tabindex=\"-1\" aria-expanded=\"false\" aria-controls=\"e-n-accordion-item-2182\" >\n\t\t\t\t\t<span class='e-n-accordion-item-title-header'><div class=\"e-n-accordion-item-title-text\"> 3. \u00bfC\u00f3mo influye el sistema de refrigeraci\u00f3n del transformador sumergido en aceite Kete en su rendimiento en diferentes condiciones clim\u00e1ticas? <\/div><\/span>\n\t\t\t\t\t\t\t<span class='e-n-accordion-item-title-icon'>\n\t\t\t<span class='e-opened' ><svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-angle-down\" viewbox=\"0 0 320 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M143 352.3L7 216.3c-9.4-9.4-9.4-24.6 0-33.9l22.6-22.6c9.4-9.4 24.6-9.4 33.9 0l96.4 96.4 96.4-96.4c9.4-9.4 24.6-9.4 33.9 0l22.6 22.6c9.4 9.4 9.4 24.6 0 33.9l-136 136c-9.2 9.4-24.4 9.4-33.8 0z\"><\/path><\/svg><\/span>\n\t\t\t<span class='e-closed'><svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-angle-right\" viewbox=\"0 0 256 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M224.3 273l-136 136c-9.4 9.4-24.6 9.4-33.9 0l-22.6-22.6c-9.4-9.4-9.4-24.6 0-33.9l96.4-96.4-96.4-96.4c-9.4-9.4-9.4-24.6 0-33.9L54.3 103c9.4-9.4 24.6-9.4 33.9 0l136 136c9.5 9.4 9.5 24.6.1 34z\"><\/path><\/svg><\/span>\n\t\t<\/span>\n\n\t\t\t\t\t\t<\/summary>\n\t\t\t\t<div role=\"region\" aria-labelledby=\"e-n-accordion-item-2182\" class=\"elementor-element elementor-element-eb6a4dc e-con-full e-flex e-con e-child\" data-id=\"eb6a4dc\" data-element_type=\"container\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t\t<div class=\"elementor-element elementor-element-5f1cf45 elementor-widget elementor-widget-text-editor\" data-id=\"5f1cf45\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p>El impacto de los sistemas de refrigeraci\u00f3n ONAN (refrigeraci\u00f3n por aire natural en inmersi\u00f3n en aceite) y ONAF (refrigeraci\u00f3n por aire forzado en inmersi\u00f3n en aceite) de los transformadores en inmersi\u00f3n en aceite de Kete sobre su rendimiento en diferentes condiciones clim\u00e1ticas es el siguiente:<\/p><p>\u2460<strong>Repercusiones de un clima de altas temperaturas<\/strong><\/p><p><strong>\u00b7<\/strong><strong>Sistema de refrigeraci\u00f3n ONAN:<\/strong> Cuando la temperatura ambiente supera los 40 \u00b0C, la eficiencia de disipaci\u00f3n t\u00e9rmica del sistema de refrigeraci\u00f3n ONAN disminuye significativamente, pudiendo reducirse hasta aproximadamente 60%. Esto se debe a que las altas temperaturas reducen la viscosidad del aceite, lo que debilita su fluidez y, por lo tanto, disminuye la eficiencia de la disipaci\u00f3n t\u00e9rmica por convecci\u00f3n natural. En este punto, la temperatura de los devanados del transformador aumenta r\u00e1pidamente, lo que acelera el envejecimiento del aislamiento. Seg\u00fan la ley de Arrhenius, la vida \u00fatil del aislamiento se reduce a la mitad por cada aumento de 8 \u00b0C en la temperatura. Al mismo tiempo, las altas temperaturas provocan una disminuci\u00f3n de la permeabilidad magn\u00e9tica de las l\u00e1minas de acero al silicio y un aumento de las p\u00e9rdidas por corrientes par\u00e1sitas, lo que reduce la eficiencia energ\u00e9tica. Puede ser necesario reducir la potencia nominal del transformador; de lo contrario, existe riesgo de da\u00f1os en el aislamiento y de incendio.<\/p><p><strong>\u00b7<\/strong><strong>Sistema de refrigeraci\u00f3n ONAF:<\/strong> En entornos con altas temperaturas, el efecto de refrigeraci\u00f3n de los ventiladores del sistema de refrigeraci\u00f3n ONAF disminuye. Aunque la disipaci\u00f3n del calor puede mejorarse a\u00f1adiendo equipos de refrigeraci\u00f3n auxiliares, el rendimiento general sigue vi\u00e9ndose afectado en cierta medida. No obstante, en comparaci\u00f3n con el sistema de refrigeraci\u00f3n ONAN, el sistema ONAF, gracias a la disipaci\u00f3n activa del calor mediante ventiladores, alcanza una mayor eficiencia de disipaci\u00f3n t\u00e9rmica en las mismas condiciones de alta temperatura. Permite controlar mejor la temperatura de los devanados del transformador y retrasar el envejecimiento del aislamiento.<\/p><p>\u2461<strong>Repercusiones del clima de bajas temperaturas<\/strong><\/p><p><strong>\u00b7<\/strong><strong>Sistema de refrigeraci\u00f3n ONAN:<\/strong> En entornos de baja temperatura, como por ejemplo a temperaturas inferiores a -30 \u00b0C, la viscosidad del aceite de transformador aumenta considerablemente, lo que provoca una mayor resistencia a la circulaci\u00f3n. Esto puede provocar que se estanque la disipaci\u00f3n del calor o incluso que el aceite se solidifique (el punto de fluidez del aceite de transformador es de aproximadamente -45 \u00b0C). Adem\u00e1s, el agua disuelta en el aceite puede transformarse en cristales de hielo en suspensi\u00f3n, lo que aumenta el riesgo de descargas parciales. Durante la puesta en marcha en fr\u00edo, las tensiones mec\u00e1nicas pueden provocar grietas en las soldaduras o en el aislamiento debido a la fragilidad del material. Por lo tanto, a temperaturas extremadamente bajas, es necesario realizar un precalentamiento por encima de los 0 \u00b0C antes de la puesta en servicio.<\/p><p><strong>\u00b7<\/strong><strong>Sistema de refrigeraci\u00f3n ONAF:<\/strong> En entornos con bajas temperaturas, adem\u00e1s del problema del aumento de la viscosidad del aceite \u2014similar al de ONAN\u2014, el sistema de refrigeraci\u00f3n ONAF tambi\u00e9n se enfrenta al riesgo de que se forme hielo en los ventiladores. Esto puede afectar al funcionamiento normal de los ventiladores y reducir a\u00fan m\u00e1s la eficiencia de la disipaci\u00f3n del calor.<\/p><p>\u2462<strong>Efectos de un clima con alta humedad y niebla salina<\/strong><\/p><p><strong>\u00b7<\/strong><strong>Sistema de refrigeraci\u00f3n ONAN:<\/strong> En entornos con alta humedad, en los que esta supera el 90%, el contenido de humedad del papel aislante aumenta, lo que provoca una disminuci\u00f3n de la rigidez diel\u00e9ctrica de aproximadamente un 30% y reduce el rendimiento del aislamiento del transformador. En entornos con niebla salina, las uniones de los devanados se corroen, lo que aumenta la resistencia de contacto y provoca un sobrecalentamiento local, lo que afecta al funcionamiento normal y a la vida \u00fatil del transformador.<\/p><p><strong>\u00b7<\/strong><strong>Sistema de refrigeraci\u00f3n ONAF:<\/strong> Los climas con alta humedad y niebla salina afectan al sistema de refrigeraci\u00f3n ONAF de forma similar a como lo hacen al ONAN, provocando principalmente una degradaci\u00f3n del rendimiento del aislamiento y la corrosi\u00f3n de los componentes. Sin embargo, dado que el sistema de refrigeraci\u00f3n ONAF est\u00e1 equipado con componentes giratorios, como los ventiladores, en entornos con alta humedad hay que prestar especial atenci\u00f3n a la prevenci\u00f3n de problemas como los cortocircuitos provocados por la humedad en los motores de los ventiladores.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/details>\n\t\t\t\t\t\t<details id=\"e-n-accordion-item-2183\" class=\"e-n-accordion-item\" >\n\t\t\t\t<summary class=\"e-n-accordion-item-title\" data-accordion-index=\"4\" tabindex=\"-1\" aria-expanded=\"false\" aria-controls=\"e-n-accordion-item-2183\" >\n\t\t\t\t\t<span class='e-n-accordion-item-title-header'><div class=\"e-n-accordion-item-title-text\"> 4. \u00bfCu\u00e1l es el criterio principal a la hora de elegir entre los m\u00e9todos de refrigeraci\u00f3n ONAN y ONAF para los transformadores de aceite \u00abkete\u00bb? <\/div><\/span>\n\t\t\t\t\t\t\t<span class='e-n-accordion-item-title-icon'>\n\t\t\t<span class='e-opened' ><svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-angle-down\" viewbox=\"0 0 320 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M143 352.3L7 216.3c-9.4-9.4-9.4-24.6 0-33.9l22.6-22.6c9.4-9.4 24.6-9.4 33.9 0l96.4 96.4 96.4-96.4c9.4-9.4 24.6-9.4 33.9 0l22.6 22.6c9.4 9.4 9.4 24.6 0 33.9l-136 136c-9.2 9.4-24.4 9.4-33.8 0z\"><\/path><\/svg><\/span>\n\t\t\t<span class='e-closed'><svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-angle-right\" viewbox=\"0 0 256 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M224.3 273l-136 136c-9.4 9.4-24.6 9.4-33.9 0l-22.6-22.6c-9.4-9.4-9.4-24.6 0-33.9l96.4-96.4-96.4-96.4c-9.4-9.4-9.4-24.6 0-33.9L54.3 103c9.4-9.4 24.6-9.4 33.9 0l136 136c9.5 9.4 9.5 24.6.1 34z\"><\/path><\/svg><\/span>\n\t\t<\/span>\n\n\t\t\t\t\t\t<\/summary>\n\t\t\t\t<div role=\"region\" aria-labelledby=\"e-n-accordion-item-2183\" class=\"elementor-element elementor-element-8566f20 e-con-full e-flex e-con e-child\" data-id=\"8566f20\" data-element_type=\"container\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t\t<div class=\"elementor-element elementor-element-d6f876c elementor-widget elementor-widget-text-editor\" data-id=\"d6f876c\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p>La elecci\u00f3n entre los m\u00e9todos de refrigeraci\u00f3n ONAN (circulaci\u00f3n natural de aceite y refrigeraci\u00f3n natural por aire) y ONAF (circulaci\u00f3n natural de aceite y refrigeraci\u00f3n forzada por aire) para los transformadores sumergidos en aceite Kete se basa fundamentalmente en la adecuaci\u00f3n entre los requisitos de disipaci\u00f3n de calor del transformador y las condiciones reales de disipaci\u00f3n de calor. En concreto, esta elecci\u00f3n puede evaluarse de forma exhaustiva a partir de los siguientes cinco aspectos clave:<\/p><p><strong>\u2460<\/strong><strong>Capacidad nominal del transformador y generaci\u00f3n de calor por p\u00e9rdidas<\/strong><\/p><p>Esta es la base m\u00e1s fundamental. El calor generado por un transformador proviene principalmente de las p\u00e9rdidas en el cobre (p\u00e9rdidas en carga) y de las p\u00e9rdidas en el hierro (p\u00e9rdidas en vac\u00edo). Cuanto mayor es la potencia, mayores son las p\u00e9rdidas y mayor es la necesidad de disipaci\u00f3n de calor:<\/p><p><strong>\u00b7<\/strong><strong>Transformadores de peque\u00f1a potencia (bajas p\u00e9rdidas):<\/strong><\/p><p>Cuando la potencia nominal es reducida (por ejemplo, \u2264500 kVA para la clase de 10 kV, \u22641000 kVA para la clase de 35 kV), el calor generado por las p\u00e9rdidas es escaso. El calor puede disiparse mediante la convecci\u00f3n natural del aceite del transformador (el aceite caliente asciende y el fr\u00edo desciende) y la convecci\u00f3n natural entre la carcasa o el radiador y el aire, sin necesidad de equipos de refrigeraci\u00f3n adicionales. Por lo tanto, se prefiere el sistema ONAN.<\/p><p><strong>\u00b7<\/strong><strong>Transformadores de capacidad media y grande (de altas p\u00e9rdidas):<\/strong><\/p><p>Cuando la potencia supera el rango anterior (por ejemplo, \u2265800 kVA para la clase de 10 kV, \u22651600 kVA para la clase de 35 kV), las p\u00e9rdidas aumentan significativamente y la tasa de disipaci\u00f3n natural del calor no puede igualar la generaci\u00f3n de calor. Esto puede provocar que la temperatura del aceite supere los l\u00edmites establecidos por la normativa nacional (normalmente, un aumento m\u00e1ximo de la temperatura del aceite \u226455 K o 60 K). En tales casos, es necesario utilizar ventiladores para forzar el flujo de aire y acelerar la disipaci\u00f3n del calor, por lo que se opta por el sistema ONAF.<\/p><p>\u2461<strong>Caracter\u00edsticas de carga de funcionamiento<\/strong><\/p><p>La tasa de carga real y el modo de funcionamiento del transformador influyen directamente en los requisitos de disipaci\u00f3n de calor:<\/p><p><strong>\u00b7<\/strong><strong>Baja tasa de carga o funcionamiento intermitente:<\/strong><\/p><p>Si el transformador funciona con una carga ligera durante un periodo prolongado (\u00edndice de carga &lt; 50%) o solo se pone en marcha durante picos de corta duraci\u00f3n (por ejemplo, los transformadores de distribuci\u00f3n rural), aunque su capacidad sea ligeramente superior, la generaci\u00f3n real de calor es baja. La capacidad natural de disipaci\u00f3n de calor de ONAN puede satisfacer la demanda, por lo que no es necesario malgastar energ\u00eda en ventiladores. Por ello, se opta por ONAN.<\/p><p><strong>\u00b7<\/strong><strong>Alta tasa de carga o funcionamiento continuo a plena carga:<\/strong><\/p><p>En el caso de los transformadores de los parques industriales, las redes de distribuci\u00f3n del n\u00facleo urbano y otros equipos que funcionan a plena carga durante largos periodos de tiempo o que presentan grandes fluctuaciones de carga (y que deben soportar sobrecargas a corto plazo), la generaci\u00f3n de calor sigue siendo elevada. El sistema ONAN no puede satisfacer los requisitos de disipaci\u00f3n de calor, por lo que es necesario el sistema ONAF de refrigeraci\u00f3n por aire forzado mediante ventiladores. Incluso durante una sobrecarga, los ventiladores pueden mejorar la capacidad de disipaci\u00f3n de calor (por lo general, admiten sobrecargas a corto plazo de 10%-20%). Por ello, se opta por el sistema ONAF.<\/p><p><strong>\u2462<\/strong><strong>Entorno de instalaci\u00f3n y condiciones de disipaci\u00f3n del calor<\/strong><\/p><p>Los factores ambientales influyen directamente en la eficacia de la disipaci\u00f3n natural del calor, por lo que es necesario adaptar los m\u00e9todos de refrigeraci\u00f3n en funci\u00f3n de cada situaci\u00f3n:<\/p><p><strong>\u00b7<\/strong><strong>Entornos bien ventilados y con temperaturas bajas:<\/strong><\/p><p>Si el transformador se instala en un espacio abierto al aire libre, en regiones de gran altitud (baja densidad del aire pero buena ventilaci\u00f3n) o en zonas fr\u00edas, la eficiencia de la disipaci\u00f3n de calor por convecci\u00f3n natural es elevada. Incluso si la capacidad se aproxima al valor cr\u00edtico, se puede dar prioridad a ONAN.<\/p><p><strong>\u00b7<\/strong><strong>Entornos con mala ventilaci\u00f3n y altas temperaturas:<\/strong><\/p><p>Si se instala en salas de distribuci\u00f3n cerradas, s\u00f3tanos, regiones tropicales o entornos industriales con elevada contaminaci\u00f3n por polvo o aceite, la disipaci\u00f3n natural del calor se ve obstaculizada. Incluso con una capacidad ligeramente inferior, la temperatura del aceite puede aumentar en exceso debido a las malas condiciones de disipaci\u00f3n del calor. En tales casos, es necesario pasar al modelo ONAF para compensar las deficiencias del entorno mediante un flujo de aire forzado generado por ventiladores.<\/p><p>\u2463<strong>Costes y requisitos de mantenimiento<\/strong><\/p><p>Existen diferencias significativas en los costes iniciales y en los costes de funcionamiento y mantenimiento entre los dos m\u00e9todos de refrigeraci\u00f3n:<\/p><p><strong>\u00b7<\/strong><strong>Ventajas de ONAN:<\/strong><\/p><p>No cuenta con ventiladores ni circuitos de control, lo que se traduce en una estructura m\u00e1s sencilla. El coste inicial de adquisici\u00f3n es bajo (entre 5% y 10% inferior al del ONAF de la misma capacidad) y no requiere mantenimiento del motor, por lo que los costes de funcionamiento y mantenimiento a largo plazo son pr\u00e1cticamente nulos. Es adecuado para situaciones en las que el coste es un factor importante y los recursos de mantenimiento son limitados (por ejemplo, redes el\u00e9ctricas rurales o peque\u00f1os transformadores de usuario).<\/p><p><strong>\u00b7<\/strong><strong>Desventajas y necesidad de la ONAF:<\/strong><\/p><p>Requiere una configuraci\u00f3n adicional de ventiladores, termostatos y circuitos el\u00e9ctricos, lo que conlleva unos costes iniciales m\u00e1s elevados. Los motores de los ventiladores necesitan una inspecci\u00f3n peri\u00f3dica (limpieza de polvo, lubricaci\u00f3n de cojinetes), lo que implica una cierta carga de trabajo de mantenimiento y un consumo de energ\u00eda (la potencia de los ventiladores suele oscilar entre decenas y cientos de vatios). Sin embargo, en el caso de los transformadores de capacidad media y grande, o de aquellos con condiciones de disipaci\u00f3n de calor insuficientes, es necesario asumir estos costes para garantizar un funcionamiento seguro. Por lo tanto, el sistema ONAF es una \u201copci\u00f3n necesaria\u201d m\u00e1s que una \u201copci\u00f3n basada en la prioridad de costes\u201d.\u201d<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/details>\n\t\t\t\t\t\t<details id=\"e-n-accordion-item-2184\" class=\"e-n-accordion-item\" >\n\t\t\t\t<summary class=\"e-n-accordion-item-title\" data-accordion-index=\"5\" tabindex=\"-1\" aria-expanded=\"false\" aria-controls=\"e-n-accordion-item-2184\" >\n\t\t\t\t\t<span class='e-n-accordion-item-title-header'><div class=\"e-n-accordion-item-title-text\"> 5. \u00bfCu\u00e1l es la vida \u00fatil de los transformadores sumergidos en aceite de Kete?  <\/div><\/span>\n\t\t\t\t\t\t\t<span class='e-n-accordion-item-title-icon'>\n\t\t\t<span class='e-opened' ><svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-angle-down\" viewbox=\"0 0 320 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M143 352.3L7 216.3c-9.4-9.4-9.4-24.6 0-33.9l22.6-22.6c9.4-9.4 24.6-9.4 33.9 0l96.4 96.4 96.4-96.4c9.4-9.4 24.6-9.4 33.9 0l22.6 22.6c9.4 9.4 9.4 24.6 0 33.9l-136 136c-9.2 9.4-24.4 9.4-33.8 0z\"><\/path><\/svg><\/span>\n\t\t\t<span class='e-closed'><svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-angle-right\" viewbox=\"0 0 256 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M224.3 273l-136 136c-9.4 9.4-24.6 9.4-33.9 0l-22.6-22.6c-9.4-9.4-9.4-24.6 0-33.9l96.4-96.4-96.4-96.4c-9.4-9.4-9.4-24.6 0-33.9L54.3 103c9.4-9.4 24.6-9.4 33.9 0l136 136c9.5 9.4 9.5 24.6.1 34z\"><\/path><\/svg><\/span>\n\t\t<\/span>\n\n\t\t\t\t\t\t<\/summary>\n\t\t\t\t<div role=\"region\" aria-labelledby=\"e-n-accordion-item-2184\" class=\"elementor-element elementor-element-3b6302b e-con-full e-flex e-con e-child\" data-id=\"3b6302b\" data-element_type=\"container\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t\t<div class=\"elementor-element elementor-element-4da9555 elementor-widget elementor-widget-text-editor\" data-id=\"4da9555\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p>Seg\u00fan las normas internacionales (como la IEC 60076), la vida \u00fatil prevista de los transformadores sumergidos en aceite de Kete suele calcularse en 20 a\u00f1os. Se trata de la vida \u00fatil prevista en condiciones ideales de \u201cfuncionamiento normal + mantenimiento peri\u00f3dico\u201d, lo que se refiere al tiempo que tardan los componentes principales (n\u00facleo de hierro, bobinados y aceite aislante) en envejecer hasta alcanzar un estado cr\u00edtico dentro de los par\u00e1metros de dise\u00f1o.<\/p><p>Rango de referencia pr\u00e1ctico en el sector: En la red el\u00e9ctrica real o en aplicaciones industriales, se trata de un indicador din\u00e1mico que se ve afectado por m\u00faltiples factores, como las normas de dise\u00f1o, las condiciones de funcionamiento y los niveles de mantenimiento. La vida \u00fatil de los transformadores suele oscilar entre los 20 y los 40 a\u00f1os.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/details>\n\t\t\t\t\t\t<details id=\"e-n-accordion-item-2185\" class=\"e-n-accordion-item\" >\n\t\t\t\t<summary class=\"e-n-accordion-item-title\" data-accordion-index=\"6\" tabindex=\"-1\" aria-expanded=\"false\" aria-controls=\"e-n-accordion-item-2185\" >\n\t\t\t\t\t<span class='e-n-accordion-item-title-header'><div class=\"e-n-accordion-item-title-text\"> 6. \u00bfCu\u00e1les son los factores que influyen en la vida \u00fatil de los transformadores sumergidos en aceite de Kete? <\/div><\/span>\n\t\t\t\t\t\t\t<span class='e-n-accordion-item-title-icon'>\n\t\t\t<span class='e-opened' ><svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-angle-down\" viewbox=\"0 0 320 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M143 352.3L7 216.3c-9.4-9.4-9.4-24.6 0-33.9l22.6-22.6c9.4-9.4 24.6-9.4 33.9 0l96.4 96.4 96.4-96.4c9.4-9.4 24.6-9.4 33.9 0l22.6 22.6c9.4 9.4 9.4 24.6 0 33.9l-136 136c-9.2 9.4-24.4 9.4-33.8 0z\"><\/path><\/svg><\/span>\n\t\t\t<span class='e-closed'><svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-angle-right\" viewbox=\"0 0 256 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M224.3 273l-136 136c-9.4 9.4-24.6 9.4-33.9 0l-22.6-22.6c-9.4-9.4-9.4-24.6 0-33.9l96.4-96.4-96.4-96.4c-9.4-9.4-9.4-24.6 0-33.9L54.3 103c9.4-9.4 24.6-9.4 33.9 0l136 136c9.5 9.4 9.5 24.6.1 34z\"><\/path><\/svg><\/span>\n\t\t<\/span>\n\n\t\t\t\t\t\t<\/summary>\n\t\t\t\t<div role=\"region\" aria-labelledby=\"e-n-accordion-item-2185\" class=\"elementor-element elementor-element-d41fa9f e-con-full e-flex e-con e-child\" data-id=\"d41fa9f\" data-element_type=\"container\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t\t<div class=\"elementor-element elementor-element-0fd938a elementor-widget elementor-widget-text-editor\" data-id=\"0fd938a\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p>El principal factor que limita la vida \u00fatil de los transformadores Kete es la tasa de envejecimiento de su sistema de aislamiento (que incluye el papel aislante de los devanados, el aceite aislante y los componentes aislantes), la cual viene determinada por los siguientes factores:<\/p><p><strong>\u2460<\/strong><strong>Temperatura de funcionamiento (el factor m\u00e1s importante)<\/strong><\/p><p>La velocidad de envejecimiento de los materiales aislantes, especialmente del aislamiento de papel, guarda una relaci\u00f3n exponencial con la temperatura. Seg\u00fan la \u201cley del envejecimiento t\u00e9rmico\u201d, la vida \u00fatil del aislamiento se reduce a la mitad por cada aumento de 6-8 \u2103 en la temperatura.<\/p><p>Durante el funcionamiento normal, el l\u00edmite m\u00e1ximo de aumento de la temperatura del aceite en la parte superior de los transformadores sumergidos en aceite suele ser de 55 K (temperatura ambiente + 55 \u2103). El funcionamiento prolongado a temperaturas excesivas (por ejemplo, cuando la temperatura m\u00e1xima del aceite supera los 80 \u2103) acelera la fragilizaci\u00f3n del papel aislante y la degradaci\u00f3n del aceite aislante, lo que acorta significativamente la vida \u00fatil.<\/p><p>Por ejemplo, si un transformador que funciona a plena carga o en sobrecarga durante un periodo prolongado sufre un fallo en el sistema de refrigeraci\u00f3n que provoca un sobrecalentamiento, su vida \u00fatil puede reducirse de 30 a\u00f1os a menos de 15 a\u00f1os.<\/p><p><strong>\u2461<\/strong><strong>Calidad y estado del aceite aislante<\/strong><\/p><p>El aceite aislante tiene como funci\u00f3n principal el aislamiento y la disipaci\u00f3n del calor, y el deterioro de sus prestaciones afecta directamente a la vida \u00fatil del sistema de aislamiento.<\/p><p>El exceso de humedad, el aumento del \u00edndice de acidez, la acumulaci\u00f3n de impurezas o la formaci\u00f3n de lodos en el aceite reducen la resistencia diel\u00e9ctrica y aceleran la corrosi\u00f3n y el envejecimiento del bobinado.<\/p><p>Si no se filtra, regenera o sustituye el aceite con regularidad (por lo general, se recomienda realizar una comprobaci\u00f3n cada 3-5 a\u00f1os y sustituirlo o regenerarlo cada 10-15 a\u00f1os), se producir\u00e1 un fallo prematuro del sistema de aislamiento.<\/p><p><strong>\u2462<\/strong><strong>Caracter\u00edsticas de carga y condiciones de funcionamiento<\/strong><\/p><p>Las tasas de carga elevadas durante largos periodos, las sobrecargas frecuentes o los efectos de los cortocircuitos provocan el sobrecalentamiento de los devanados y un aumento de la tensi\u00f3n mec\u00e1nica, lo que acelera la fatiga del aislamiento:<\/p><p>Las redes el\u00e9ctricas rurales o los transformadores industriales que soportan con frecuencia sobrecargas de corta duraci\u00f3n (por ejemplo, los picos de potencia al arrancar los motores) son propensos al envejecimiento del aislamiento de los devanados debido a los ciclos t\u00e9rmicos y a las vibraciones mec\u00e1nicas.<\/p><p>Las aver\u00edas por cortocircuito (por ejemplo, los cortocircuitos en la l\u00ednea que hacen que los transformadores soporten enormes corrientes de cortocircuito) pueden provocar la deformaci\u00f3n de los devanados y da\u00f1os en el aislamiento. Incluso tras la reparaci\u00f3n, pueden quedar riesgos ocultos que acorten la vida \u00fatil restante.<\/p><p><strong>\u2463<\/strong><strong>Condiciones ambientales<\/strong><\/p><p>El entorno de instalaci\u00f3n influye directamente en la velocidad de envejecimiento del aislamiento y de los componentes.<\/p><p>Los entornos h\u00famedos, con altas temperaturas o muy contaminados (con polvo o gases qu\u00edmicamente corrosivos) aceleran la absorci\u00f3n de humedad por parte del aislamiento, la degradaci\u00f3n del aceite y la oxidaci\u00f3n de las piezas met\u00e1licas.<\/p><p>En zonas de gran altitud (donde el aire es m\u00e1s enrarecido y la disipaci\u00f3n del calor es deficiente), una disipaci\u00f3n insuficiente del calor puede provocar un sobrecalentamiento si el transformador no est\u00e1 dise\u00f1ado espec\u00edficamente para ello.<\/p><p>Los lugares con fuertes vibraciones (por ejemplo, naves industriales cercanas a bombas o ventiladores) agravan el aflojamiento de los devanados y el desgaste del aislamiento.<\/p><p><strong>\u2464<\/strong><strong>Nivel de mantenimiento<\/strong><\/p><p>La falta de inspecciones peri\u00f3dicas (como los an\u00e1lisis de la calidad del aceite, las pruebas de resistencia de aislamiento y la detecci\u00f3n de descargas parciales) impide detectar las aver\u00edas en una fase temprana, lo que hace que los problemas menores se conviertan en defectos graves.<\/p><p>Las aver\u00edas no reparadas en los sistemas de refrigeraci\u00f3n (ventiladores, bombas de aceite) reducen la eficiencia de la disipaci\u00f3n del calor y provocan un aumento de la temperatura.<\/p><p>Si no se realiza el mantenimiento adecuado de accesorios como los casquillos y los cambiadores de tomas, se puede producir un sobrecalentamiento local o una aver\u00eda en el aislamiento, lo que afectar\u00eda indirectamente a la vida \u00fatil total.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/details>\n\t\t\t\t\t\t<details id=\"e-n-accordion-item-2186\" class=\"e-n-accordion-item\" >\n\t\t\t\t<summary class=\"e-n-accordion-item-title\" data-accordion-index=\"7\" tabindex=\"-1\" aria-expanded=\"false\" aria-controls=\"e-n-accordion-item-2186\" >\n\t\t\t\t\t<span class='e-n-accordion-item-title-header'><div class=\"e-n-accordion-item-title-text\"> 7. \u00bfC\u00f3mo se deben mantener los transformadores para maximizar la vida \u00fatil de los transformadores sumergidos en aceite de Kete? <\/div><\/span>\n\t\t\t\t\t\t\t<span class='e-n-accordion-item-title-icon'>\n\t\t\t<span class='e-opened' ><svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-angle-down\" viewbox=\"0 0 320 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M143 352.3L7 216.3c-9.4-9.4-9.4-24.6 0-33.9l22.6-22.6c9.4-9.4 24.6-9.4 33.9 0l96.4 96.4 96.4-96.4c9.4-9.4 24.6-9.4 33.9 0l22.6 22.6c9.4 9.4 9.4 24.6 0 33.9l-136 136c-9.2 9.4-24.4 9.4-33.8 0z\"><\/path><\/svg><\/span>\n\t\t\t<span class='e-closed'><svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-angle-right\" viewbox=\"0 0 256 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M224.3 273l-136 136c-9.4 9.4-24.6 9.4-33.9 0l-22.6-22.6c-9.4-9.4-9.4-24.6 0-33.9l96.4-96.4-96.4-96.4c-9.4-9.4-9.4-24.6 0-33.9L54.3 103c9.4-9.4 24.6-9.4 33.9 0l136 136c9.5 9.4 9.5 24.6.1 34z\"><\/path><\/svg><\/span>\n\t\t<\/span>\n\n\t\t\t\t\t\t<\/summary>\n\t\t\t\t<div role=\"region\" aria-labelledby=\"e-n-accordion-item-2186\" class=\"elementor-element elementor-element-09a50ce e-con-full e-flex e-con e-child\" data-id=\"09a50ce\" data-element_type=\"container\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t\t<div class=\"elementor-element elementor-element-f9d6bbd elementor-widget elementor-widget-text-editor\" data-id=\"f9d6bbd\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p>La vida \u00fatil de los transformadores sumergidos en aceite de Kete depende de m\u00faltiples factores, como el entorno de funcionamiento, la calidad del mantenimiento y las condiciones de carga. Un mantenimiento cient\u00edfico puede retrasar eficazmente el envejecimiento del equipo y maximizar su vida \u00fatil (que suele estar dise\u00f1ada para un periodo de entre 20 y 30 a\u00f1os, aunque puede superar los 40 a\u00f1os con un mantenimiento adecuado). Las inspecciones diarias, el mantenimiento de los componentes principales, el control del entorno, las pruebas de detecci\u00f3n y la prevenci\u00f3n de aver\u00edas influyen en su vida \u00fatil.<\/p><p><strong>\u2460<\/strong><strong>Inspecci\u00f3n diaria y mantenimiento b\u00e1sico<\/strong><\/p><p>La inspecci\u00f3n diaria es fundamental para detectar a tiempo los peligros ocultos, por lo que es necesario establecer un sistema de inspecci\u00f3n normalizado.<\/p><p><strong>\u00b7<\/strong><strong>Inspecci\u00f3n del aspecto y del estado de funcionamiento<\/strong><strong>:<\/strong> Nivel y color del aceite, inspecci\u00f3n de fugas de aceite, control de la temperatura, ruido y vibraciones<\/p><p><strong>\u00b7<\/strong><strong>Inspecci\u00f3n del estado de los accesorios<\/strong><strong>:<\/strong> Casquillos, sistema de refrigeraci\u00f3n, dispositivos de protecci\u00f3n<\/p><p><strong>\u2461<\/strong><strong>Mantenimiento y gesti\u00f3n del aceite de transformador<\/strong><\/p><p>El aceite de transformador es el medio fundamental para el aislamiento y la disipaci\u00f3n del calor, y su calidad influye directamente en la vida \u00fatil de los equipos.<\/p><p><strong>\u00b7<\/strong><strong>An\u00e1lisis y tratamiento de la calidad del aceite<\/strong><strong>:<\/strong> Pruebas peri\u00f3dicas, tratamiento del aceite en servicio, deshidrataci\u00f3n y desgasificaci\u00f3n, prevenci\u00f3n de la contaminaci\u00f3n<\/p><p><strong>\u00b7<\/strong><strong>Gesti\u00f3n del nivel de aceite y de su reposici\u00f3n<\/strong><\/p><p><strong>\u2462<\/strong><strong>Mantenimiento especializado de los componentes principales<\/strong><\/p><p><strong>\u00b7<\/strong><strong>Mantenimiento del n\u00facleo de hierro y del devanado<\/strong><strong>:<\/strong> Inspecci\u00f3n de la puesta a tierra del n\u00facleo de hierro; inspecci\u00f3n del aislamiento de los devanados<\/p><p><strong>\u00b7<\/strong><strong>Mantenimiento del cambiador de tomas<\/strong><strong>:<\/strong> Funcionamiento y limpieza peri\u00f3dicos del conmutador de tomas; prueba de resistencia en corriente continua; inspecci\u00f3n de las juntas de la c\u00e1mara de aceite<\/p><p><strong>\u2463<\/strong><strong>Control de las condiciones ambientales y de funcionamiento<\/strong><strong>: <\/strong><\/p><p><strong>\u00b7<\/strong><strong>Optimizaci\u00f3n del entorno operativo<\/strong><strong>:<\/strong> Prevenci\u00f3n del polvo y la humedad, control de la carga<\/p><p><strong>\u00b7<\/strong><strong>Mantenimiento y pruebas peri\u00f3dicas<\/strong><strong>:<\/strong> Mantenimiento menor (anual), mantenimiento mayor (cada 5-10 a\u00f1os), comprobaciones el\u00e9ctricas<\/p><p><strong>\u2464<\/strong><strong>Prevenci\u00f3n de aver\u00edas y gesti\u00f3n de emergencias<\/strong><strong>: <\/strong>Establecer registros de mantenimiento y medidas de emergencia<\/p><p>El mantenimiento para prolongar la vida \u00fatil de los transformadores sumergidos en aceite de Kete debe seguir el principio de \u201cprevenci\u00f3n ante todo y supervisi\u00f3n durante todo el proceso\u201d. Mediante la detecci\u00f3n oportuna de anomal\u00edas a trav\u00e9s de inspecciones diarias, la garant\u00eda del aislamiento y la disipaci\u00f3n del calor mediante la gesti\u00f3n de la calidad del aceite, el mantenimiento peri\u00f3dico de los componentes principales y el control cient\u00edfico del entorno y la carga, es posible retrasar de forma eficaz el envejecimiento del aislamiento y el desgaste de los componentes, maximizando as\u00ed la vida \u00fatil de los equipos. Adem\u00e1s, la integraci\u00f3n de tecnolog\u00edas de monitorizaci\u00f3n inteligentes (por ejemplo, monitorizaci\u00f3n en l\u00ednea de la calidad del aceite o sensores de aumento de temperatura) puede mejorar a\u00fan m\u00e1s la eficiencia y la precisi\u00f3n del mantenimiento.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/details>\n\t\t\t\t\t\t<details id=\"e-n-accordion-item-2187\" class=\"e-n-accordion-item\" >\n\t\t\t\t<summary class=\"e-n-accordion-item-title\" data-accordion-index=\"8\" tabindex=\"-1\" aria-expanded=\"false\" aria-controls=\"e-n-accordion-item-2187\" >\n\t\t\t\t\t<span class='e-n-accordion-item-title-header'><div class=\"e-n-accordion-item-title-text\"> 8. \u00bfQu\u00e9 tipo de aceite se utiliza en los transformadores de Kete sumergidos en aceite? \u00bfQu\u00e9 ventajas presenta este tipo de aceite? <\/div><\/span>\n\t\t\t\t\t\t\t<span class='e-n-accordion-item-title-icon'>\n\t\t\t<span class='e-opened' ><svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-angle-down\" viewbox=\"0 0 320 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M143 352.3L7 216.3c-9.4-9.4-9.4-24.6 0-33.9l22.6-22.6c9.4-9.4 24.6-9.4 33.9 0l96.4 96.4 96.4-96.4c9.4-9.4 24.6-9.4 33.9 0l22.6 22.6c9.4 9.4 9.4 24.6 0 33.9l-136 136c-9.2 9.4-24.4 9.4-33.8 0z\"><\/path><\/svg><\/span>\n\t\t\t<span class='e-closed'><svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-angle-right\" viewbox=\"0 0 256 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M224.3 273l-136 136c-9.4 9.4-24.6 9.4-33.9 0l-22.6-22.6c-9.4-9.4-9.4-24.6 0-33.9l96.4-96.4-96.4-96.4c-9.4-9.4-9.4-24.6 0-33.9L54.3 103c9.4-9.4 24.6-9.4 33.9 0l136 136c9.5 9.4 9.5 24.6.1 34z\"><\/path><\/svg><\/span>\n\t\t<\/span>\n\n\t\t\t\t\t\t<\/summary>\n\t\t\t\t<div role=\"region\" aria-labelledby=\"e-n-accordion-item-2187\" class=\"elementor-element elementor-element-a831a3e e-con-full e-flex e-con e-child\" data-id=\"a831a3e\" data-element_type=\"container\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t\t<div class=\"elementor-element elementor-element-72df141 elementor-widget elementor-widget-text-editor\" data-id=\"72df141\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p>El aceite mineral aislante de los transformadores sumergidos en aceite de Kete desempe\u00f1a m\u00faltiples funciones fundamentales para garantizar un funcionamiento seguro y estable de los transformadores.<\/p><p><strong>\u2460<\/strong><strong>Excelente rendimiento aislante para la seguridad el\u00e9ctrica<\/strong><\/p><p><strong>\u00b7<\/strong><strong>Alta resistencia a la rotura:<\/strong> La tensi\u00f3n de ruptura del aceite aislante mineral suele ser superior a 30 kV (los productos de alta calidad pueden superar los 50 kV), lo que supera con creces la del aire (aproximadamente 3 kV\/mm). Esto a\u00edsla eficazmente los conductores con diferentes potenciales y evita las aver\u00edas por cortocircuito provocadas por la ruptura del aislamiento.<\/p><p><strong>\u00b7<\/strong><strong>Baja p\u00e9rdida diel\u00e9ctrica y alta resistividad volum\u00e9trica:<\/strong> Presenta un factor de p\u00e9rdida diel\u00e9ctrica (tan\u03b4) reducido, lo que se traduce en una baja p\u00e9rdida de energ\u00eda bajo campos el\u00e9ctricos y una menor generaci\u00f3n de calor. Por otra parte, su elevada resistividad volum\u00e9trica (normalmente &gt;10\u00b9\u2074 \u03a9\u30fbcm) minimiza la corriente de fuga, lo que mejora a\u00fan m\u00e1s la fiabilidad del aislamiento.<\/p><p><strong>\u00b7<\/strong><strong>Rellenar los huecos en el aislamiento:<\/strong> Los materiales aislantes s\u00f3lidos, como el papel aislante y el cart\u00f3n, que se encuentran en el interior de los transformadores, presentan poros min\u00fasculos. El aceite aislante mineral puede penetrar en estos poros, rellenar los huecos de aire, evitar las descargas parciales provocadas por la ionizaci\u00f3n del aire y mejorar la rigidez diel\u00e9ctrica global del sistema de aislamiento.<\/p><p><strong>\u2461<\/strong><strong>Disipaci\u00f3n eficiente del calor para mantener un aumento estable de la temperatura del equipo<\/strong><\/p><p><strong>\u00b7<\/strong><strong>Buena conductividad t\u00e9rmica:<\/strong> Su conductividad t\u00e9rmica es de aproximadamente 0,12-0,15 W\/(m\u30fbK), mucho mayor que la del aire (alrededor de 0,026 W\/(m\u30fbK)), lo que le permite absorber r\u00e1pidamente el calor generado por los devanados y los n\u00facleos de hierro.<\/p><p><strong>\u00b7<\/strong><strong>Enfriamiento por circulaci\u00f3n por convecci\u00f3n:<\/strong> El aceite aislante calentado reduce su densidad, asciende de forma natural hasta el radiador situado en la parte superior del transformador, intercambia calor con el aire a trav\u00e9s del radiador, se enfr\u00eda y desciende, creando as\u00ed una circulaci\u00f3n que evacua continuamente el calor del equipo.<\/p><p><strong>\u00b7<\/strong><strong>Sinergia con los sistemas de refrigeraci\u00f3n:<\/strong> En los transformadores de gran tama\u00f1o, el aceite aislante mineral puede combinarse con sistemas de refrigeraci\u00f3n por circulaci\u00f3n forzada de aceite (como bombas de aceite y ventiladores de refrigeraci\u00f3n) para mejorar a\u00fan m\u00e1s la eficiencia de la disipaci\u00f3n del calor, satisfaciendo as\u00ed las necesidades de un funcionamiento a alta carga.<\/p><p><strong>\u2462<\/strong><strong>Gran estabilidad qu\u00edmica para prolongar la vida \u00fatil de los equipos<\/strong><\/p><p><strong>\u00b7<\/strong><strong>Excelente resistencia a la oxidaci\u00f3n:<\/strong> El aceite mineral aislante refinado (por ejemplo, derivado de petr\u00f3leo crudo naft\u00e9nico o paraf\u00ednico) contiene pocas impurezas, como azufre y nitr\u00f3geno. No se oxida f\u00e1cilmente a altas temperaturas para formar \u00e1cidos, coloides o lodos, lo que reduce la corrosi\u00f3n y la obstrucci\u00f3n de los materiales aislantes.<\/p><p><strong>\u00b7<\/strong><strong>Baja volatilidad:<\/strong> Tiene un punto de ebullici\u00f3n elevado y una baja volatilidad, por lo que no es propenso a la p\u00e9rdida de aceite ni a la degradaci\u00f3n del rendimiento debido a la volatilizaci\u00f3n durante el funcionamiento a largo plazo, lo que reduce la frecuencia de mantenimiento.<\/p><p><strong>\u00b7<\/strong><strong>Buena compatibilidad con el aislamiento s\u00f3lido:<\/strong> Es perfectamente compatible con los materiales que se utilizan habitualmente en los transformadores, como el papel de celulosa y el cart\u00f3n aislante, sin provocar reacciones qu\u00edmicas que causen el envejecimiento de los materiales, lo que contribuye a mantener la estabilidad del sistema de aislamiento.<\/p><p><strong>\u2463<\/strong><strong>Extinci\u00f3n y protecci\u00f3n del arco para mejorar la seguridad operativa<\/strong><\/p><p><strong>\u00b7<\/strong><strong>Funci\u00f3n de extinci\u00f3n del arco:<\/strong> Cuando se genera un arco el\u00e9ctrico, el aceite se descompone en gases como el hidr\u00f3geno y el metano, que pueden absorber la energ\u00eda del arco. Al mismo tiempo, el flujo de aceite puede enfriar la zona del arco, lo que permite extinguirlo r\u00e1pidamente y evitar que la aver\u00eda se agrave.<\/p><p><strong>\u00b7<\/strong><strong>Aislamiento del aire y la humedad:<\/strong> La capa de aceite recubre la superficie de los componentes internos, aisl\u00e1ndolos del ox\u00edgeno y la humedad del aire, lo que evita la oxidaci\u00f3n de los componentes met\u00e1licos \u2014como los n\u00facleos de hierro y los devanados\u2014 provocada por la humedad y reduce el riesgo de deterioro del aislamiento.<\/p><p><strong>\u00b7<\/strong><strong>Portador de diagn\u00f3stico de aver\u00edas:<\/strong> El aceite aislante genera gases caracter\u00edsticos (como el acetileno y el hidr\u00f3geno) durante las aver\u00edas. Mediante la tecnolog\u00eda de an\u00e1lisis de gases disueltos (DGA), es posible detectar con antelaci\u00f3n posibles aver\u00edas, lo que sirve de base para la evaluaci\u00f3n del estado de los equipos y su mantenimiento.<\/p><p><strong>\u2464<\/strong><strong>Ventajas en cuanto a econom\u00eda y practicidad<\/strong><\/p><p><strong>\u00b7<\/strong><strong>Coste controlable:<\/strong> El aceite mineral aislante cuenta con numerosas fuentes de materia prima (procedentes del refinado del petr\u00f3leo), procesos de producci\u00f3n consolidados y precios relativamente bajos, lo que lo hace adecuado para aplicaciones a gran escala en diversos transformadores (desde transformadores de distribuci\u00f3n hasta transformadores de ultraalta tensi\u00f3n).<\/p><p><strong>\u00b7<\/strong><strong>Mantenimiento sencillo: <\/strong>Durante el funcionamiento normal, solo es necesario realizar un control peri\u00f3dico de la calidad del aceite (como la humedad, la p\u00e9rdida diel\u00e9ctrica y la tensi\u00f3n de ruptura). Si fuera necesario, los tratamientos de filtraci\u00f3n y regeneraci\u00f3n pueden restablecer su rendimiento, con unos costes de mantenimiento inferiores a los de algunos aceites aislantes sint\u00e9ticos.<\/p><p><strong>\u00b7<\/strong><strong>Gran capacidad de adaptaci\u00f3n:<\/strong> Es capaz de mantener un rendimiento estable en un amplio rango de temperaturas (por ejemplo, buena fluidez a bajas temperaturas y resistencia al deterioro a altas temperaturas), adapt\u00e1ndose a las necesidades operativas de las distintas regiones clim\u00e1ticas.<\/p><p>El aceite aislante mineral proporciona una protecci\u00f3n operativa integral a los transformadores gracias a sus cuatro funciones principales: aislamiento, disipaci\u00f3n del calor, estabilidad qu\u00edmica y protecci\u00f3n contra la extinci\u00f3n de arcos el\u00e9ctricos. Se trata de un material clave e indispensable en los sistemas el\u00e9ctricos. Su rendimiento est\u00e1 directamente relacionado con la vida \u00fatil, la eficiencia y la seguridad de los transformadores, por lo que sigue siendo predominante en el sector el\u00e9ctrico (aunque los aceites aislantes sint\u00e9ticos se utilizan cada vez m\u00e1s en situaciones espec\u00edficas, el aceite mineral sigue siendo una de las opciones m\u00e1s rentables).<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/details>\n\t\t\t\t\t\t<details id=\"e-n-accordion-item-2188\" class=\"e-n-accordion-item\" >\n\t\t\t\t<summary class=\"e-n-accordion-item-title\" data-accordion-index=\"9\" tabindex=\"-1\" aria-expanded=\"false\" aria-controls=\"e-n-accordion-item-2188\" >\n\t\t\t\t\t<span class='e-n-accordion-item-title-header'><div class=\"e-n-accordion-item-title-text\"> 9. \u00bfQu\u00e9 medidas de protecci\u00f3n incorpora el transformador de aceite Kete contra sobrecargas, sobrecalentamiento y cortocircuitos? <\/div><\/span>\n\t\t\t\t\t\t\t<span class='e-n-accordion-item-title-icon'>\n\t\t\t<span class='e-opened' ><svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-angle-down\" viewbox=\"0 0 320 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M143 352.3L7 216.3c-9.4-9.4-9.4-24.6 0-33.9l22.6-22.6c9.4-9.4 24.6-9.4 33.9 0l96.4 96.4 96.4-96.4c9.4-9.4 24.6-9.4 33.9 0l22.6 22.6c9.4 9.4 9.4 24.6 0 33.9l-136 136c-9.2 9.4-24.4 9.4-33.8 0z\"><\/path><\/svg><\/span>\n\t\t\t<span class='e-closed'><svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-angle-right\" viewbox=\"0 0 256 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M224.3 273l-136 136c-9.4 9.4-24.6 9.4-33.9 0l-22.6-22.6c-9.4-9.4-9.4-24.6 0-33.9l96.4-96.4-96.4-96.4c-9.4-9.4-9.4-24.6 0-33.9L54.3 103c9.4-9.4 24.6-9.4 33.9 0l136 136c9.5 9.4 9.5 24.6.1 34z\"><\/path><\/svg><\/span>\n\t\t<\/span>\n\n\t\t\t\t\t\t<\/summary>\n\t\t\t\t<div role=\"region\" aria-labelledby=\"e-n-accordion-item-2188\" class=\"elementor-element elementor-element-5fb1d72 e-con-full e-flex e-con e-child\" data-id=\"5fb1d72\" data-element_type=\"container\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t\t<div class=\"elementor-element elementor-element-9f1b9a3 elementor-widget elementor-widget-text-editor\" data-id=\"9f1b9a3\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p>Los transformadores Kete sumergidos en aceite suelen incorporar medidas de protecci\u00f3n de varios niveles, que abarcan el dise\u00f1o de autoprotecci\u00f3n interna, los dispositivos de monitorizaci\u00f3n externos y los sistemas de protecci\u00f3n por rel\u00e9s.<\/p><p><strong>\u2460<\/strong><strong>Medidas de protecci\u00f3n contra la \u201csobrecarga\u201d<\/strong><\/p><p>Por \u00absobrecarga\u00bb se entiende la situaci\u00f3n en la que la corriente de carga del transformador supera el valor nominal durante un periodo prolongado o breve, lo que puede provocar el sobrecalentamiento de los devanados y un envejecimiento acelerado del aislamiento. Las principales medidas de protecci\u00f3n son las siguientes:<\/p><p><strong>\u00b7<\/strong><strong>Protecci\u00f3n contra sobrecargas (sistema de protecci\u00f3n por rel\u00e9s)<\/strong><\/p><p>Principio: La corriente de carga del transformador se supervisa mediante transformadores de corriente. Cuando la corriente supera un m\u00faltiplo determinado del valor nominal (por ejemplo, entre 1,2 y 1,5 veces) y se mantiene durante un umbral establecido, se activa la acci\u00f3n de protecci\u00f3n.<\/p><p><strong>\u00b7<\/strong><strong>Dise\u00f1o de la protecci\u00f3n t\u00e9rmica interna<\/strong><strong>: <\/strong>Incluye la selecci\u00f3n de conductores de bobinado y la optimizaci\u00f3n de la estructura de disipaci\u00f3n de calor: la capacidad natural de disipaci\u00f3n de calor se mejora aumentando el volumen del dep\u00f3sito de aceite y optimizando la disposici\u00f3n de las aletas de refrigeraci\u00f3n, lo que mitiga el aumento de temperatura durante las sobrecargas.<\/p><p><strong>\u2461<\/strong><strong>Medidas de protecci\u00f3n contra el \u201csobrecalentamiento\u201d<\/strong><\/p><p>El sobrecalentamiento puede deberse a una sobrecarga, a una p\u00e9rdida de n\u00facleo excesiva o a fallos en el sistema de refrigeraci\u00f3n, lo que requiere una supervisi\u00f3n en tiempo real y una respuesta r\u00e1pida:<\/p><p><strong>\u00b7<\/strong><strong>Dispositivos de control de temperatura<\/strong><\/p><p>Term\u00f3metro de temperatura del aceite: Mide directamente la temperatura superior del aceite en el dep\u00f3sito. Se activa una alarma cuando la temperatura del aceite supera los 85 \u00b0C (valor de ajuste habitual).<\/p><p>Term\u00f3metro de devanado: simula la temperatura del punto m\u00e1s caliente del devanado (combinando la temperatura del aceite y la corriente de carga). La protecci\u00f3n se activa cuando la temperatura del punto m\u00e1s caliente supera los 105 \u00b0C.<\/p><p>Medici\u00f3n de temperatura mediante fibra \u00f3ptica: En los transformadores de gran tama\u00f1o, se utilizan sensores de fibra \u00f3ptica para medir directamente las temperaturas de los puntos calientes de los devanados o los n\u00facleos, lo que ofrece una mayor precisi\u00f3n y una respuesta m\u00e1s r\u00e1pida.<\/p><p><strong>\u00b7<\/strong><strong>Protecci\u00f3n del sistema de refrigeraci\u00f3n<\/strong><\/p><p>Asistencia a la refrigeraci\u00f3n forzada: Los transformadores de mayor capacidad est\u00e1n equipados con sistemas de refrigeraci\u00f3n por aire con circulaci\u00f3n forzada de aceite (OFAF) o de refrigeraci\u00f3n por agua. Estos sistemas se activan autom\u00e1ticamente cuando la temperatura del aceite aumenta para mejorar la disipaci\u00f3n del calor; si el sistema de refrigeraci\u00f3n falla (por ejemplo, si se detiene un ventilador), se activa una alarma o se reduce la carga.<\/p><p>Rel\u00e9 Buchholz: Puede producirse una ligera emisi\u00f3n de gas cuando la elevada temperatura del aceite provoca su descomposici\u00f3n y genera una peque\u00f1a cantidad de gas, lo que activa una alarma para que se comprueben las causas del sobrecalentamiento.<\/p><p><strong>\u00b7<\/strong><strong>Protecci\u00f3n contra sobrecorriente por sobrecalentamiento<\/strong><\/p><p>Cuando la temperatura sigue aumentando hasta alcanzar un nivel peligroso (por ejemplo, si la temperatura del aceite supera los 95 \u00b0C o la temperatura en el punto m\u00e1s caliente del devanado supera los 120 \u00b0C), el sistema de protecci\u00f3n corta directamente el suministro el\u00e9ctrico del transformador para evitar la ruptura del aislamiento.<\/p><p><strong>\u2462<\/strong><strong>Medidas de protecci\u00f3n contra los \u201ccortocircuitos\u201d<\/strong><\/p><p>Los cortocircuitos (incluidos los cortocircuitos internos en los devanados y los cortocircuitos externos en las tomas de corriente) generan corrientes muy intensas que pueden da\u00f1ar instant\u00e1neamente el transformador, lo que requiere un r\u00e1pido aislamiento de la aver\u00eda:<\/p><p><strong>\u00b7<\/strong><strong>Protecci\u00f3n diferencial (protecci\u00f3n principal)<\/strong><\/p><p>Principio: Bas\u00e1ndose en el principio de que \u201cla corriente que entra en el transformador es igual a la corriente que sale de \u00e9l\u201d, se mide la diferencia de corriente mediante transformadores de corriente situados a ambos lados. Se detecta un cortocircuito interno cuando la corriente diferencial supera el valor establecido.<\/p><p>Caracter\u00edsticas: Act\u00faa r\u00e1pidamente (normalmente en unas decenas de milisegundos) y es capaz de distinguir eficazmente entre cortocircuitos internos y fallos externos, lo que lo convierte en el elemento central de la protecci\u00f3n contra cortocircuitos del transformador.<\/p><p><strong>\u00b7<\/strong><strong>Protecci\u00f3n Buchholz (exclusiva para cortocircuitos internos)<\/strong><\/p><p>Acci\u00f3n por exceso de gas: Cuando se produce un cortocircuito en un devanado interno, las altas temperaturas generadas por la corriente de cortocircuito provocan una intensa descomposici\u00f3n del aceite, lo que genera una gran cantidad de gas. Esto hace que el rel\u00e9 de Buchholz se active, lo que desencadena una desconexi\u00f3n instant\u00e1nea para cortar el suministro el\u00e9ctrico y evitar que la aver\u00eda se agrave.<\/p><p>Escenario de aplicaci\u00f3n: Especialmente indicado para fallos internos, como cortocircuitos entre espiras o entre capas del devanado, y constituye un complemento importante de la protecci\u00f3n diferencial.<\/p><p><strong>\u00b7<\/strong><strong>Protecci\u00f3n contra sobrecorriente (protecci\u00f3n de respaldo)<\/strong><\/p><p>Protecci\u00f3n contra cortocircuitos externos: Cuando se produce un cortocircuito externo (por ejemplo, un cortocircuito en una toma de corriente), la protecci\u00f3n contra sobrecorriente detecta la sobrecorriente y se activa con un retardo (el cual debe evitar la duraci\u00f3n del impacto de la corriente de cortocircuito), lo que evita que el transformador tenga que soportar corrientes de cortocircuito prolongadas.<\/p><p>Protecci\u00f3n instant\u00e1nea contra sobrecorriente: En caso de cortocircuitos externos a corta distancia, la protecci\u00f3n instant\u00e1nea contra sobrecorriente puede activarse sin demora para aislar r\u00e1pidamente la aver\u00eda.<\/p><p><strong>\u00b7<\/strong><strong>Medidas de limitaci\u00f3n de la corriente<\/strong><\/p><p>Dise\u00f1o de la impedancia de cortocircuito: Los devanados se dise\u00f1an con una impedancia de cortocircuito espec\u00edfica para limitar la amplitud de las corrientes de cortocircuito, lo que reduce la tensi\u00f3n mec\u00e1nica que sufren los devanados y los n\u00facleos a causa de los impactos de cortocircuito.<\/p><p>Refuerzo mec\u00e1nico del bobinado: Se utiliza una estructura de bobinado robusta (por ejemplo, fijaci\u00f3n del aislamiento reforzado, fijaci\u00f3n con tiras de soporte) para mejorar la resistencia mec\u00e1nica frente a los impactos de cortocircuito.<\/p><p><strong>\u2463<\/strong><strong>Protecci\u00f3n integral y medidas complementarias<\/strong><\/p><p><strong>\u00b7<\/strong><strong>Protecci\u00f3n de puesta a tierra:<\/strong> El punto neutro del transformador est\u00e1 conectado a tierra o se conecta a tierra a trav\u00e9s de una bobina supresora de arcos. En caso de cortocircuito a tierra monof\u00e1sico, la protecci\u00f3n contra corrientes de secuencia cero detecta la falla y se activa para evitar da\u00f1os en los equipos debidos a sobretensiones.<\/p><p><strong>\u00b7<\/strong><strong>Coordinaci\u00f3n de la protecci\u00f3n mediante copias de seguridad:<\/strong> La protecci\u00f3n contra sobrecargas, la protecci\u00f3n contra sobrecorrientes, etc., act\u00faan como sistemas de respaldo para ofrecer seguridad cuando falla la protecci\u00f3n principal, formando as\u00ed una defensa en varias capas compuesta por \u201cprotecci\u00f3n principal + protecci\u00f3n de respaldo\u201d.\u201d<\/p><p><strong>\u00b7<\/strong><strong>Sistema de seguimiento en l\u00ednea:<\/strong> Los transformadores inteligentes est\u00e1n equipados con dispositivos de monitorizaci\u00f3n del estado que recogen datos en tiempo real sobre la temperatura del aceite, el nivel de aceite, la composici\u00f3n del gas, las descargas parciales, etc. Mediante el an\u00e1lisis de los datos se predicen posibles fallos, lo que permite alertar con antelaci\u00f3n de los riesgos de cortocircuito o sobrecalentamiento.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/details>\n\t\t\t\t\t\t<details id=\"e-n-accordion-item-2189\" class=\"e-n-accordion-item\" >\n\t\t\t\t<summary class=\"e-n-accordion-item-title\" data-accordion-index=\"10\" tabindex=\"-1\" aria-expanded=\"false\" aria-controls=\"e-n-accordion-item-2189\" >\n\t\t\t\t\t<span class='e-n-accordion-item-title-header'><div class=\"e-n-accordion-item-title-text\"> 10. \u00bfQu\u00e9 aspectos de los transformadores de aceite Kete se pueden personalizar? <\/div><\/span>\n\t\t\t\t\t\t\t<span class='e-n-accordion-item-title-icon'>\n\t\t\t<span class='e-opened' ><svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-angle-down\" viewbox=\"0 0 320 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M143 352.3L7 216.3c-9.4-9.4-9.4-24.6 0-33.9l22.6-22.6c9.4-9.4 24.6-9.4 33.9 0l96.4 96.4 96.4-96.4c9.4-9.4 24.6-9.4 33.9 0l22.6 22.6c9.4 9.4 9.4 24.6 0 33.9l-136 136c-9.2 9.4-24.4 9.4-33.8 0z\"><\/path><\/svg><\/span>\n\t\t\t<span class='e-closed'><svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-angle-right\" viewbox=\"0 0 256 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M224.3 273l-136 136c-9.4 9.4-24.6 9.4-33.9 0l-22.6-22.6c-9.4-9.4-9.4-24.6 0-33.9l96.4-96.4-96.4-96.4c-9.4-9.4-9.4-24.6 0-33.9L54.3 103c9.4-9.4 24.6-9.4 33.9 0l136 136c9.5 9.4 9.5 24.6.1 34z\"><\/path><\/svg><\/span>\n\t\t<\/span>\n\n\t\t\t\t\t\t<\/summary>\n\t\t\t\t<div role=\"region\" aria-labelledby=\"e-n-accordion-item-2189\" class=\"elementor-element elementor-element-8387c87 e-con-full e-flex e-con e-child\" data-id=\"8387c87\" data-element_type=\"container\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t\t<div class=\"elementor-element elementor-element-8e6122e elementor-widget elementor-widget-text-editor\" data-id=\"8e6122e\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p>Los transformadores Kete sumergidos en aceite pueden personalizarse en m\u00faltiples aspectos para satisfacer las necesidades espec\u00edficas de los distintos clientes.<\/p><p><strong>\u2460<\/strong><strong>Potencia nominal y relaci\u00f3n de transformaci\u00f3n:<\/strong> En funci\u00f3n de las necesidades de consumo el\u00e9ctrico del cliente, es posible ajustar la potencia nominal y la relaci\u00f3n de transformaci\u00f3n del transformador para garantizar una tensi\u00f3n de salida adecuada y satisfacer las necesidades de las distintas cargas.<\/p><p><strong>\u2461<\/strong><strong>Dimensiones totales:<\/strong> Si el espacio de instalaci\u00f3n del cliente es limitado, los fabricantes pueden personalizar los transformadores con dimensiones especiales en funci\u00f3n de las condiciones reales, para que se adapten mejor al entorno de instalaci\u00f3n.<\/p><p><strong>\u2462<\/strong><strong>Accesorios y m\u00e9todos de cableado:<\/strong> Se pueden suministrar los accesorios correspondientes, como cajas de derivaci\u00f3n, sondas de temperatura y rel\u00e9s de gas, seg\u00fan los requisitos del cliente, y se pueden dise\u00f1ar m\u00e9todos de cableado adecuados para facilitar la instalaci\u00f3n y el uso por parte de los clientes.<\/p><p><strong>\u2463<\/strong><strong>Material de bobinado:<\/strong> Algunos transformadores sumergidos en aceite ofrecen dos materiales para los devanados \u2014totalmente de cobre y totalmente de aluminio\u2014 entre los que los usuarios pueden elegir. Los transformadores totalmente de cobre presentan una buena conductividad el\u00e9ctrica y t\u00e9rmica, lo que permite reducir la resistencia y el aumento de temperatura; por su parte, los transformadores totalmente de aluminio son m\u00e1s ligeros y ofrecen una excelente resistencia a la corrosi\u00f3n.<\/p><p><strong>\u2464<\/strong><strong>Material aislante:<\/strong> Se pueden seleccionar materiales aislantes resistentes a altas temperaturas para cumplir los requisitos de rendimiento del aislamiento en entornos o condiciones de funcionamiento especiales, mejorando as\u00ed la fiabilidad y la vida \u00fatil del transformador.<\/p><p><strong>\u2465<\/strong><strong>Nivel de protecci\u00f3n:<\/strong> En determinados entornos de aplicaci\u00f3n especiales, como zonas con altas temperaturas, alta humedad, contaminaci\u00f3n o plataformas mar\u00edtimas, es posible mejorar el nivel de protecci\u00f3n del transformador mediante un dise\u00f1o especial que le permita adaptarse a condiciones de funcionamiento adversas.<\/p><p><strong>\u2466<\/strong><strong>M\u00e9todo de disipaci\u00f3n del calor:<\/strong> En funci\u00f3n de la capacidad y las condiciones de uso del transformador, es posible optimizar el dise\u00f1o de disipaci\u00f3n del calor. Por ejemplo, se puede recurrir a un dise\u00f1o especial de los canales de aceite, aumentar el n\u00famero de aletas de refrigeraci\u00f3n o adoptar un sistema de refrigeraci\u00f3n por aire forzado para mejorar la eficiencia de la disipaci\u00f3n del calor y reducir el aumento de temperatura del transformador.<\/p><p><strong>\u2467<\/strong><strong>Estructura de bobinado:<\/strong> Por ejemplo, en el caso de los devanados de baja tensi\u00f3n y alta intensidad, se puede utilizar un devanado de l\u00e1mina de cobre. Por un lado, reduce el flujo de fuga transversal del devanado, lo que disminuye las p\u00e9rdidas por corrientes par\u00e1sitas; por otro lado, mejora la capacidad del transformador para soportar cortocircuitos repentinos.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/details>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-0ff856d elementor-widget__width-initial elementor-widget elementor-widget-text-editor\" data-id=\"0ff856d\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p><strong>\u2161.<\/strong><strong>Mantenimiento posventa<\/strong><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-35cf19d elementor-widget elementor-widget-n-accordion\" data-id=\"35cf19d\" data-element_type=\"widget\" data-settings=\"{&quot;default_state&quot;:&quot;all_collapsed&quot;,&quot;max_items_expended&quot;:&quot;multiple&quot;,&quot;n_accordion_animation_duration&quot;:{&quot;unit&quot;:&quot;ms&quot;,&quot;size&quot;:400,&quot;sizes&quot;:[]}}\" data-widget_type=\"nested-accordion.default\">\n\t\t\t\t\t\t\t<div class=\"e-n-accordion\" aria-label=\"Acorde\u00f3n. Abre los enlaces con la tecla Intro o la barra espaciadora, ci\u00e9rralos con la tecla Esc y navega con las teclas de flecha.\">\n\t\t\t\t\t\t<details id=\"e-n-accordion-item-5640\" class=\"e-n-accordion-item\" >\n\t\t\t\t<summary class=\"e-n-accordion-item-title\" data-accordion-index=\"1\" tabindex=\"0\" aria-expanded=\"false\" aria-controls=\"e-n-accordion-item-5640\" >\n\t\t\t\t\t<span class='e-n-accordion-item-title-header'><div class=\"e-n-accordion-item-title-text\"> 1. \u00bfQu\u00e9 incluye la cobertura de la garant\u00eda de Kete durante el periodo de garant\u00eda? \u00bfY qui\u00e9n corre con los gastos? <\/div><\/span>\n\t\t\t\t\t\t\t<span class='e-n-accordion-item-title-icon'>\n\t\t\t<span class='e-opened' ><svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-angle-down\" viewbox=\"0 0 320 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M143 352.3L7 216.3c-9.4-9.4-9.4-24.6 0-33.9l22.6-22.6c9.4-9.4 24.6-9.4 33.9 0l96.4 96.4 96.4-96.4c9.4-9.4 24.6-9.4 33.9 0l22.6 22.6c9.4 9.4 9.4 24.6 0 33.9l-136 136c-9.2 9.4-24.4 9.4-33.8 0z\"><\/path><\/svg><\/span>\n\t\t\t<span class='e-closed'><svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-angle-right\" viewbox=\"0 0 256 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M224.3 273l-136 136c-9.4 9.4-24.6 9.4-33.9 0l-22.6-22.6c-9.4-9.4-9.4-24.6 0-33.9l96.4-96.4-96.4-96.4c-9.4-9.4-9.4-24.6 0-33.9L54.3 103c9.4-9.4 24.6-9.4 33.9 0l136 136c9.5 9.4 9.5 24.6.1 34z\"><\/path><\/svg><\/span>\n\t\t<\/span>\n\n\t\t\t\t\t\t<\/summary>\n\t\t\t\t<div role=\"region\" aria-labelledby=\"e-n-accordion-item-5640\" class=\"elementor-element elementor-element-8db37d5 e-con-full e-flex e-con e-child\" data-id=\"8db37d5\" data-element_type=\"container\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t\t<div class=\"elementor-element elementor-element-87480e7 elementor-widget elementor-widget-text-editor\" data-id=\"87480e7\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p>La cobertura de la garant\u00eda de nuestra empresa incluye fallos de funcionamiento causados por defectos de material o problemas en el proceso de fabricaci\u00f3n, tales como fugas de agua en la carcasa, fallos en el aislamiento, funcionamiento an\u00f3malo de los interruptores, etc.<\/p><p>Proporcionamos piezas de recambio para el mantenimiento de forma gratuita y, en caso necesario, enviaremos personal t\u00e9cnico para realizar inspecciones y reparaciones in situ; los gastos de desplazamiento correr\u00e1n a cargo del proveedor.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/details>\n\t\t\t\t\t\t<details id=\"e-n-accordion-item-5641\" class=\"e-n-accordion-item\" >\n\t\t\t\t<summary class=\"e-n-accordion-item-title\" data-accordion-index=\"2\" tabindex=\"-1\" aria-expanded=\"false\" aria-controls=\"e-n-accordion-item-5641\" >\n\t\t\t\t\t<span class='e-n-accordion-item-title-header'><div class=\"e-n-accordion-item-title-text\"> 2. \u00bfProporcionar\u00e1 Kete documentos con instrucciones para la instalaci\u00f3n? <\/div><\/span>\n\t\t\t\t\t\t\t<span class='e-n-accordion-item-title-icon'>\n\t\t\t<span class='e-opened' ><svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-angle-down\" viewbox=\"0 0 320 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M143 352.3L7 216.3c-9.4-9.4-9.4-24.6 0-33.9l22.6-22.6c9.4-9.4 24.6-9.4 33.9 0l96.4 96.4 96.4-96.4c9.4-9.4 24.6-9.4 33.9 0l22.6 22.6c9.4 9.4 9.4 24.6 0 33.9l-136 136c-9.2 9.4-24.4 9.4-33.8 0z\"><\/path><\/svg><\/span>\n\t\t\t<span class='e-closed'><svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-angle-right\" viewbox=\"0 0 256 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M224.3 273l-136 136c-9.4 9.4-24.6 9.4-33.9 0l-22.6-22.6c-9.4-9.4-9.4-24.6 0-33.9l96.4-96.4-96.4-96.4c-9.4-9.4-9.4-24.6 0-33.9L54.3 103c9.4-9.4 24.6-9.4 33.9 0l136 136c9.5 9.4 9.5 24.6.1 34z\"><\/path><\/svg><\/span>\n\t\t<\/span>\n\n\t\t\t\t\t\t<\/summary>\n\t\t\t\t<div role=\"region\" aria-labelledby=\"e-n-accordion-item-5641\" class=\"elementor-element elementor-element-f40cd7f e-con-full e-flex e-con e-child\" data-id=\"f40cd7f\" data-element_type=\"container\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t\t<div class=\"elementor-element elementor-element-2f33eab elementor-widget elementor-widget-text-editor\" data-id=\"2f33eab\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p>En el caso de los transformadores de gran tama\u00f1o que requieran la retirada de algunos accesorios para poder colocarlos en los contenedores, proporcionaremos un v\u00eddeo de instalaci\u00f3n y una versi\u00f3n electr\u00f3nica de las instrucciones de instalaci\u00f3n.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/details>\n\t\t\t\t\t\t<details id=\"e-n-accordion-item-5642\" class=\"e-n-accordion-item\" >\n\t\t\t\t<summary class=\"e-n-accordion-item-title\" data-accordion-index=\"3\" tabindex=\"-1\" aria-expanded=\"false\" aria-controls=\"e-n-accordion-item-5642\" >\n\t\t\t\t\t<span class='e-n-accordion-item-title-header'><div class=\"e-n-accordion-item-title-text\"> 3. Si es necesario realizar un mantenimiento y se compran piezas de recambio a Kete, \u00bfcu\u00e1nto tardar\u00e1n en llegar dichas piezas? <\/div><\/span>\n\t\t\t\t\t\t\t<span class='e-n-accordion-item-title-icon'>\n\t\t\t<span class='e-opened' ><svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-angle-down\" viewbox=\"0 0 320 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M143 352.3L7 216.3c-9.4-9.4-9.4-24.6 0-33.9l22.6-22.6c9.4-9.4 24.6-9.4 33.9 0l96.4 96.4 96.4-96.4c9.4-9.4 24.6-9.4 33.9 0l22.6 22.6c9.4 9.4 9.4 24.6 0 33.9l-136 136c-9.2 9.4-24.4 9.4-33.8 0z\"><\/path><\/svg><\/span>\n\t\t\t<span class='e-closed'><svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-angle-right\" viewbox=\"0 0 256 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M224.3 273l-136 136c-9.4 9.4-24.6 9.4-33.9 0l-22.6-22.6c-9.4-9.4-9.4-24.6 0-33.9l96.4-96.4-96.4-96.4c-9.4-9.4-9.4-24.6 0-33.9L54.3 103c9.4-9.4 24.6-9.4 33.9 0l136 136c9.5 9.4 9.5 24.6.1 34z\"><\/path><\/svg><\/span>\n\t\t<\/span>\n\n\t\t\t\t\t\t<\/summary>\n\t\t\t\t<div role=\"region\" aria-labelledby=\"e-n-accordion-item-5642\" class=\"elementor-element elementor-element-a349b2f e-con-full e-flex e-con e-child\" data-id=\"a349b2f\" data-element_type=\"container\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t\t<div class=\"elementor-element elementor-element-7480d7f elementor-widget elementor-widget-text-editor\" data-id=\"7480d7f\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p>Si el cliente necesita adquirir piezas de recambio de nuestra empresa, la mercanc\u00eda suele enviarse en un plazo de entre 2 y 7 d\u00edas.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/details>\n\t\t\t\t\t\t<details id=\"e-n-accordion-item-5643\" class=\"e-n-accordion-item\" >\n\t\t\t\t<summary class=\"e-n-accordion-item-title\" data-accordion-index=\"4\" tabindex=\"-1\" aria-expanded=\"false\" aria-controls=\"e-n-accordion-item-5643\" >\n\t\t\t\t\t<span class='e-n-accordion-item-title-header'><div class=\"e-n-accordion-item-title-text\"> 4. \u00bfC\u00f3mo se gestionan las solicitudes de mantenimiento de emergencia y cu\u00e1l es el tiempo de respuesta habitual? <\/div><\/span>\n\t\t\t\t\t\t\t<span class='e-n-accordion-item-title-icon'>\n\t\t\t<span class='e-opened' ><svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-angle-down\" viewbox=\"0 0 320 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M143 352.3L7 216.3c-9.4-9.4-9.4-24.6 0-33.9l22.6-22.6c9.4-9.4 24.6-9.4 33.9 0l96.4 96.4 96.4-96.4c9.4-9.4 24.6-9.4 33.9 0l22.6 22.6c9.4 9.4 9.4 24.6 0 33.9l-136 136c-9.2 9.4-24.4 9.4-33.8 0z\"><\/path><\/svg><\/span>\n\t\t\t<span class='e-closed'><svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-angle-right\" viewbox=\"0 0 256 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M224.3 273l-136 136c-9.4 9.4-24.6 9.4-33.9 0l-22.6-22.6c-9.4-9.4-9.4-24.6 0-33.9l96.4-96.4-96.4-96.4c-9.4-9.4-9.4-24.6 0-33.9L54.3 103c9.4-9.4 24.6-9.4 33.9 0l136 136c9.5 9.4 9.5 24.6.1 34z\"><\/path><\/svg><\/span>\n\t\t<\/span>\n\n\t\t\t\t\t\t<\/summary>\n\t\t\t\t<div role=\"region\" aria-labelledby=\"e-n-accordion-item-5643\" class=\"elementor-element elementor-element-05bb81a e-con-full e-flex e-con e-child\" data-id=\"05bb81a\" data-element_type=\"container\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t\t<div class=\"elementor-element elementor-element-4e882a7 elementor-widget elementor-widget-text-editor\" data-id=\"4e882a7\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p>L\u00ednea de asistencia t\u00e9cnica disponible las 24 horas del d\u00eda, los 7 d\u00edas de la semana, que garantiza un tiempo de resoluci\u00f3n de aver\u00edas de \u2264 2 horas.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/details>\n\t\t\t\t\t\t<details id=\"e-n-accordion-item-5644\" class=\"e-n-accordion-item\" >\n\t\t\t\t<summary class=\"e-n-accordion-item-title\" data-accordion-index=\"5\" tabindex=\"-1\" aria-expanded=\"false\" aria-controls=\"e-n-accordion-item-5644\" >\n\t\t\t\t\t<span class='e-n-accordion-item-title-header'><div class=\"e-n-accordion-item-title-text\"> 5. \u00bfQu\u00e9 tipo de asistencia posventa puede ofrecer Kete, incluidos los servicios de resoluci\u00f3n de problemas y mantenimiento? <\/div><\/span>\n\t\t\t\t\t\t\t<span class='e-n-accordion-item-title-icon'>\n\t\t\t<span class='e-opened' ><svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-angle-down\" viewbox=\"0 0 320 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M143 352.3L7 216.3c-9.4-9.4-9.4-24.6 0-33.9l22.6-22.6c9.4-9.4 24.6-9.4 33.9 0l96.4 96.4 96.4-96.4c9.4-9.4 24.6-9.4 33.9 0l22.6 22.6c9.4 9.4 9.4 24.6 0 33.9l-136 136c-9.2 9.4-24.4 9.4-33.8 0z\"><\/path><\/svg><\/span>\n\t\t\t<span class='e-closed'><svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-angle-right\" viewbox=\"0 0 256 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M224.3 273l-136 136c-9.4 9.4-24.6 9.4-33.9 0l-22.6-22.6c-9.4-9.4-9.4-24.6 0-33.9l96.4-96.4-96.4-96.4c-9.4-9.4-9.4-24.6 0-33.9L54.3 103c9.4-9.4 24.6-9.4 33.9 0l136 136c9.5 9.4 9.5 24.6.1 34z\"><\/path><\/svg><\/span>\n\t\t<\/span>\n\n\t\t\t\t\t\t<\/summary>\n\t\t\t\t<div role=\"region\" aria-labelledby=\"e-n-accordion-item-5644\" class=\"elementor-element elementor-element-0d9ad48 e-con-full e-flex e-con e-child\" data-id=\"0d9ad48\" data-element_type=\"container\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t\t<div class=\"elementor-element elementor-element-8572058 elementor-widget elementor-widget-text-editor\" data-id=\"8572058\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p>Durante el periodo de garant\u00eda, se realizar\u00e1n visitas peri\u00f3dicas (una vez cada tres meses) para comprobar el estado de funcionamiento y ofrecer recomendaciones de mantenimiento.<\/p><p>Una vez finalizado el periodo de garant\u00eda, se pueden ofrecer servicios de mantenimiento de por vida a precio de coste, as\u00ed como el suministro de piezas de recambio.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/details>\n\t\t\t\t\t\t<details id=\"e-n-accordion-item-5645\" class=\"e-n-accordion-item\" >\n\t\t\t\t<summary class=\"e-n-accordion-item-title\" data-accordion-index=\"6\" tabindex=\"-1\" aria-expanded=\"false\" aria-controls=\"e-n-accordion-item-5645\" >\n\t\t\t\t\t<span class='e-n-accordion-item-title-header'><div class=\"e-n-accordion-item-title-text\"> 6. \u00bfOfrece Kete opciones de contratos de servicio o de ampliaci\u00f3n de la garant\u00eda? <\/div><\/span>\n\t\t\t\t\t\t\t<span class='e-n-accordion-item-title-icon'>\n\t\t\t<span class='e-opened' ><svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-angle-down\" viewbox=\"0 0 320 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M143 352.3L7 216.3c-9.4-9.4-9.4-24.6 0-33.9l22.6-22.6c9.4-9.4 24.6-9.4 33.9 0l96.4 96.4 96.4-96.4c9.4-9.4 24.6-9.4 33.9 0l22.6 22.6c9.4 9.4 9.4 24.6 0 33.9l-136 136c-9.2 9.4-24.4 9.4-33.8 0z\"><\/path><\/svg><\/span>\n\t\t\t<span class='e-closed'><svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-angle-right\" viewbox=\"0 0 256 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M224.3 273l-136 136c-9.4 9.4-24.6 9.4-33.9 0l-22.6-22.6c-9.4-9.4-9.4-24.6 0-33.9l96.4-96.4-96.4-96.4c-9.4-9.4-9.4-24.6 0-33.9L54.3 103c9.4-9.4 24.6-9.4 33.9 0l136 136c9.5 9.4 9.5 24.6.1 34z\"><\/path><\/svg><\/span>\n\t\t<\/span>\n\n\t\t\t\t\t\t<\/summary>\n\t\t\t\t<div role=\"region\" aria-labelledby=\"e-n-accordion-item-5645\" class=\"elementor-element elementor-element-fee700e e-con-full e-flex e-con e-child\" data-id=\"fee700e\" data-element_type=\"container\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t\t<div class=\"elementor-element elementor-element-26f8b2b elementor-widget elementor-widget-text-editor\" data-id=\"26f8b2b\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p>S\u00ed, podemos. Por lo general, el periodo de garant\u00eda de nuestros productos es de un a\u00f1o. Si se requiere una ampliaci\u00f3n del periodo de garant\u00eda, aumentaremos el precio en funci\u00f3n de un margen de beneficio determinado, bas\u00e1ndonos en el precio actual.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/details>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-685f6bb elementor-widget__width-initial elementor-widget elementor-widget-text-editor\" data-id=\"685f6bb\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p><strong>\u2162.<\/strong><strong>Env\u00edo y pago<\/strong><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-400c4e4 elementor-widget elementor-widget-n-accordion\" data-id=\"400c4e4\" data-element_type=\"widget\" data-settings=\"{&quot;default_state&quot;:&quot;all_collapsed&quot;,&quot;max_items_expended&quot;:&quot;multiple&quot;,&quot;n_accordion_animation_duration&quot;:{&quot;unit&quot;:&quot;ms&quot;,&quot;size&quot;:400,&quot;sizes&quot;:[]}}\" data-widget_type=\"nested-accordion.default\">\n\t\t\t\t\t\t\t<div class=\"e-n-accordion\" aria-label=\"Acorde\u00f3n. Abre los enlaces con la tecla Intro o la barra espaciadora, ci\u00e9rralos con la tecla Esc y navega con las teclas de flecha.\">\n\t\t\t\t\t\t<details id=\"e-n-accordion-item-6710\" class=\"e-n-accordion-item\" >\n\t\t\t\t<summary class=\"e-n-accordion-item-title\" data-accordion-index=\"1\" tabindex=\"0\" aria-expanded=\"false\" aria-controls=\"e-n-accordion-item-6710\" >\n\t\t\t\t\t<span class='e-n-accordion-item-title-header'><div class=\"e-n-accordion-item-title-text\"> 1. \u00bfCu\u00e1l es el plazo de fabricaci\u00f3n y entrega de los transformadores en aceite de Kete? <\/div><\/span>\n\t\t\t\t\t\t\t<span class='e-n-accordion-item-title-icon'>\n\t\t\t<span class='e-opened' ><svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-angle-down\" viewbox=\"0 0 320 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M143 352.3L7 216.3c-9.4-9.4-9.4-24.6 0-33.9l22.6-22.6c9.4-9.4 24.6-9.4 33.9 0l96.4 96.4 96.4-96.4c9.4-9.4 24.6-9.4 33.9 0l22.6 22.6c9.4 9.4 9.4 24.6 0 33.9l-136 136c-9.2 9.4-24.4 9.4-33.8 0z\"><\/path><\/svg><\/span>\n\t\t\t<span class='e-closed'><svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-angle-right\" viewbox=\"0 0 256 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M224.3 273l-136 136c-9.4 9.4-24.6 9.4-33.9 0l-22.6-22.6c-9.4-9.4-9.4-24.6 0-33.9l96.4-96.4-96.4-96.4c-9.4-9.4-9.4-24.6 0-33.9L54.3 103c9.4-9.4 24.6-9.4 33.9 0l136 136c9.5 9.4 9.5 24.6.1 34z\"><\/path><\/svg><\/span>\n\t\t<\/span>\n\n\t\t\t\t\t\t<\/summary>\n\t\t\t\t<div role=\"region\" aria-labelledby=\"e-n-accordion-item-6710\" class=\"elementor-element elementor-element-13a21e2 e-con-full e-flex e-con e-child\" data-id=\"13a21e2\" data-element_type=\"container\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t\t<div class=\"elementor-element elementor-element-a9edb1f elementor-widget elementor-widget-text-editor\" data-id=\"a9edb1f\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p>En t\u00e9rminos generales, si el cliente proporciona planos de dise\u00f1o detallados y los requisitos t\u00e9cnicos, los transformadores de menos de 2500 kVA pueden fabricarse en unos 20 d\u00edas; los transformadores de m\u00e1s de 2500 kVA suelen tardar entre 30 y 40 d\u00edas. El plazo de entrega concreto depende de la complejidad del transformador.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/details>\n\t\t\t\t\t\t<details id=\"e-n-accordion-item-6711\" class=\"e-n-accordion-item\" >\n\t\t\t\t<summary class=\"e-n-accordion-item-title\" data-accordion-index=\"2\" tabindex=\"-1\" aria-expanded=\"false\" aria-controls=\"e-n-accordion-item-6711\" >\n\t\t\t\t\t<span class='e-n-accordion-item-title-header'><div class=\"e-n-accordion-item-title-text\"> 2. \u00bfCu\u00e1l es el embalaje de los transformadores de aceite Kete? <\/div><\/span>\n\t\t\t\t\t\t\t<span class='e-n-accordion-item-title-icon'>\n\t\t\t<span class='e-opened' ><svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-angle-down\" viewbox=\"0 0 320 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M143 352.3L7 216.3c-9.4-9.4-9.4-24.6 0-33.9l22.6-22.6c9.4-9.4 24.6-9.4 33.9 0l96.4 96.4 96.4-96.4c9.4-9.4 24.6-9.4 33.9 0l22.6 22.6c9.4 9.4 9.4 24.6 0 33.9l-136 136c-9.2 9.4-24.4 9.4-33.8 0z\"><\/path><\/svg><\/span>\n\t\t\t<span class='e-closed'><svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-angle-right\" viewbox=\"0 0 256 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M224.3 273l-136 136c-9.4 9.4-24.6 9.4-33.9 0l-22.6-22.6c-9.4-9.4-9.4-24.6 0-33.9l96.4-96.4-96.4-96.4c-9.4-9.4-9.4-24.6 0-33.9L54.3 103c9.4-9.4 24.6-9.4 33.9 0l136 136c9.5 9.4 9.5 24.6.1 34z\"><\/path><\/svg><\/span>\n\t\t<\/span>\n\n\t\t\t\t\t\t<\/summary>\n\t\t\t\t<div role=\"region\" aria-labelledby=\"e-n-accordion-item-6711\" class=\"elementor-element elementor-element-b2e3ee1 e-con-full e-flex e-con e-child\" data-id=\"b2e3ee1\" data-element_type=\"container\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t\t<div class=\"elementor-element elementor-element-563c289 elementor-widget elementor-widget-text-editor\" data-id=\"563c289\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p>Para la mercanc\u00eda a granel, utilizaremos cajas de madera como embalaje; para los contenedores completos, utilizaremos pal\u00e9s de madera para reforzar el embalaje.<\/p><p>Si dispone de una patente registrada legalmente, podemos embalar la mercanc\u00eda en cajas con su marca previa recepci\u00f3n de sus cartas de autorizaci\u00f3n.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/details>\n\t\t\t\t\t\t<details id=\"e-n-accordion-item-6712\" class=\"e-n-accordion-item\" >\n\t\t\t\t<summary class=\"e-n-accordion-item-title\" data-accordion-index=\"3\" tabindex=\"-1\" aria-expanded=\"false\" aria-controls=\"e-n-accordion-item-6712\" >\n\t\t\t\t\t<span class='e-n-accordion-item-title-header'><div class=\"e-n-accordion-item-title-text\"> 3. \u00bfCu\u00e1les son las condiciones de pago para los transformadores Kete? <\/div><\/span>\n\t\t\t\t\t\t\t<span class='e-n-accordion-item-title-icon'>\n\t\t\t<span class='e-opened' ><svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-angle-down\" viewbox=\"0 0 320 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M143 352.3L7 216.3c-9.4-9.4-9.4-24.6 0-33.9l22.6-22.6c9.4-9.4 24.6-9.4 33.9 0l96.4 96.4 96.4-96.4c9.4-9.4 24.6-9.4 33.9 0l22.6 22.6c9.4 9.4 9.4 24.6 0 33.9l-136 136c-9.2 9.4-24.4 9.4-33.8 0z\"><\/path><\/svg><\/span>\n\t\t\t<span class='e-closed'><svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-angle-right\" viewbox=\"0 0 256 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M224.3 273l-136 136c-9.4 9.4-24.6 9.4-33.9 0l-22.6-22.6c-9.4-9.4-9.4-24.6 0-33.9l96.4-96.4-96.4-96.4c-9.4-9.4-9.4-24.6 0-33.9L54.3 103c9.4-9.4 24.6-9.4 33.9 0l136 136c9.5 9.4 9.5 24.6.1 34z\"><\/path><\/svg><\/span>\n\t\t<\/span>\n\n\t\t\t\t\t\t<\/summary>\n\t\t\t\t<div role=\"region\" aria-labelledby=\"e-n-accordion-item-6712\" class=\"elementor-element elementor-element-febed70 e-con-full e-flex e-con e-child\" data-id=\"febed70\" data-element_type=\"container\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t\t<div class=\"elementor-element elementor-element-577268c elementor-widget elementor-widget-text-editor\" data-id=\"577268c\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p>\u2460 T\/T: 30% como anticipo y 70% antes de la entrega.<\/p><p>\u2461Letra de cr\u00e9dito a la vista<\/p><p>\u2462DP a la vista<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/details>\n\t\t\t\t\t\t<details id=\"e-n-accordion-item-6713\" class=\"e-n-accordion-item\" >\n\t\t\t\t<summary class=\"e-n-accordion-item-title\" data-accordion-index=\"4\" tabindex=\"-1\" aria-expanded=\"false\" aria-controls=\"e-n-accordion-item-6713\" >\n\t\t\t\t\t<span class='e-n-accordion-item-title-header'><div class=\"e-n-accordion-item-title-text\"> 4. \u00bfCu\u00e1les son las condiciones de entrega para el env\u00edo a granel de transformadores Kete? <\/div><\/span>\n\t\t\t\t\t\t\t<span class='e-n-accordion-item-title-icon'>\n\t\t\t<span class='e-opened' ><svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-angle-down\" viewbox=\"0 0 320 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M143 352.3L7 216.3c-9.4-9.4-9.4-24.6 0-33.9l22.6-22.6c9.4-9.4 24.6-9.4 33.9 0l96.4 96.4 96.4-96.4c9.4-9.4 24.6-9.4 33.9 0l22.6 22.6c9.4 9.4 9.4 24.6 0 33.9l-136 136c-9.2 9.4-24.4 9.4-33.8 0z\"><\/path><\/svg><\/span>\n\t\t\t<span class='e-closed'><svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-angle-right\" viewbox=\"0 0 256 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M224.3 273l-136 136c-9.4 9.4-24.6 9.4-33.9 0l-22.6-22.6c-9.4-9.4-9.4-24.6 0-33.9l96.4-96.4-96.4-96.4c-9.4-9.4-9.4-24.6 0-33.9L54.3 103c9.4-9.4 24.6-9.4 33.9 0l136 136c9.5 9.4 9.5 24.6.1 34z\"><\/path><\/svg><\/span>\n\t\t<\/span>\n\n\t\t\t\t\t\t<\/summary>\n\t\t\t\t<div role=\"region\" aria-labelledby=\"e-n-accordion-item-6713\" class=\"elementor-element elementor-element-84549c5 e-con-full e-flex e-con e-child\" data-id=\"84549c5\" data-element_type=\"container\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t\t<div class=\"elementor-element elementor-element-eb70847 elementor-widget elementor-widget-text-editor\" data-id=\"eb70847\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p>EXW, FOB, CFR, CIF u otras condiciones de entrega solicitadas por los clientes.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/details>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-40ce24e elementor-widget__width-initial elementor-widget elementor-widget-text-editor\" data-id=\"40ce24e\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p><strong>\u2163.<\/strong><strong>Sistemas y certificaciones<\/strong><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-dee0114 elementor-widget elementor-widget-n-accordion\" data-id=\"dee0114\" data-element_type=\"widget\" data-settings=\"{&quot;default_state&quot;:&quot;all_collapsed&quot;,&quot;max_items_expended&quot;:&quot;multiple&quot;,&quot;n_accordion_animation_duration&quot;:{&quot;unit&quot;:&quot;ms&quot;,&quot;size&quot;:400,&quot;sizes&quot;:[]}}\" data-widget_type=\"nested-accordion.default\">\n\t\t\t\t\t\t\t<div class=\"e-n-accordion\" aria-label=\"Acorde\u00f3n. Abre los enlaces con la tecla Intro o la barra espaciadora, ci\u00e9rralos con la tecla Esc y navega con las teclas de flecha.\">\n\t\t\t\t\t\t<details id=\"e-n-accordion-item-2330\" class=\"e-n-accordion-item\" >\n\t\t\t\t<summary class=\"e-n-accordion-item-title\" data-accordion-index=\"1\" tabindex=\"0\" aria-expanded=\"false\" aria-controls=\"e-n-accordion-item-2330\" >\n\t\t\t\t\t<span class='e-n-accordion-item-title-header'><div class=\"e-n-accordion-item-title-text\"> 1. \u00bfCumple el dise\u00f1o de los transformadores de inmersi\u00f3n en aceite de Kete con las normas y certificaciones espec\u00edficas del sector? <\/div><\/span>\n\t\t\t\t\t\t\t<span class='e-n-accordion-item-title-icon'>\n\t\t\t<span class='e-opened' ><svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-angle-down\" viewbox=\"0 0 320 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M143 352.3L7 216.3c-9.4-9.4-9.4-24.6 0-33.9l22.6-22.6c9.4-9.4 24.6-9.4 33.9 0l96.4 96.4 96.4-96.4c9.4-9.4 24.6-9.4 33.9 0l22.6 22.6c9.4 9.4 9.4 24.6 0 33.9l-136 136c-9.2 9.4-24.4 9.4-33.8 0z\"><\/path><\/svg><\/span>\n\t\t\t<span class='e-closed'><svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-angle-right\" viewbox=\"0 0 256 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M224.3 273l-136 136c-9.4 9.4-24.6 9.4-33.9 0l-22.6-22.6c-9.4-9.4-9.4-24.6 0-33.9l96.4-96.4-96.4-96.4c-9.4-9.4-9.4-24.6 0-33.9L54.3 103c9.4-9.4 24.6-9.4 33.9 0l136 136c9.5 9.4 9.5 24.6.1 34z\"><\/path><\/svg><\/span>\n\t\t<\/span>\n\n\t\t\t\t\t\t<\/summary>\n\t\t\t\t<div role=\"region\" aria-labelledby=\"e-n-accordion-item-2330\" class=\"elementor-element elementor-element-1641554 e-con-full e-flex e-con e-child\" data-id=\"1641554\" data-element_type=\"container\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t\t<div class=\"elementor-element elementor-element-c9d5aa0 elementor-widget elementor-widget-text-editor\" data-id=\"c9d5aa0\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p>Los transformadores de aceite Kete cumplen con diversas normas internacionales, normas nacionales y los principales sistemas de certificaci\u00f3n.<\/p><p><strong>\u2460<\/strong><strong>Normas generales: IEC 60076, GB 1094<\/strong><\/p><p><strong>\u2461<\/strong><strong>Sistemas clave de certificaci\u00f3n<\/strong><\/p><p><strong>\u00b7<\/strong><strong>Certificaciones chinas:<\/strong> Certificaci\u00f3n CCC, Certificaci\u00f3n del sistema ISO<\/p><p><strong>\u00b7<\/strong><strong>Certificaci\u00f3n de la UE:<\/strong> Certificaci\u00f3n CE<\/p><p><strong>\u00b7<\/strong><strong>Certificaci\u00f3n de EE. UU.:<\/strong> Certificaci\u00f3n UL<\/p><p><strong>\u00b7<\/strong><strong>Certificaci\u00f3n canadiense:<\/strong> Certificaci\u00f3n GSA<\/p><p><strong>\u00b7<\/strong><strong>Certificaci\u00f3n rusa:<\/strong> Certificaci\u00f3n GOST<\/p><p><strong>\u00b7<\/strong><strong>Certificaci\u00f3n africana:<\/strong> Certificaci\u00f3n COC<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/details>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>","protected":false},"excerpt":{"rendered":"<p>La serie Kete de transformadores de distribuci\u00f3n sumergidos en aceite ofrece una amplia gama de opciones de potencia y configuraciones flexibles. Cumplen plenamente con m\u00faltiples normas, como IEC, ANSI y GB, y pueden adaptarse con precisi\u00f3n a diversos escenarios de aplicaci\u00f3n, entre los que se incluyen la construcci\u00f3n de l\u00edneas de transmisi\u00f3n y distribuci\u00f3n de energ\u00eda, los sistemas de generaci\u00f3n de energ\u00eda renovable (por ejemplo, energ\u00eda e\u00f3lica y fotovoltaica) y la distribuci\u00f3n de energ\u00eda para peque\u00f1as y medianas empresas.<\/p>","protected":false},"featured_media":5605,"template":"","meta":{"_uag_custom_page_level_css":"","site-sidebar-layout":"no-sidebar","site-content-layout":"","ast-site-content-layout":"full-width-container","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"disabled","ast-breadcrumbs-content":"","ast-featured-img":"disabled","footer-sml-layout":"","theme-transparent-header-meta":"default","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"set","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center 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#1\",\"content_width\":\"full\",\"flex_direction\":\"column\",\"border_border\":\"solid\",\"border_width\":{\"unit\":\"px\",\"top\":\"1\",\"right\":\"1\",\"bottom\":\"1\",\"left\":\"1\",\"isLinked\":true},\"padding\":{\"unit\":\"px\",\"top\":\"50\",\"right\":\"30\",\"bottom\":\"50\",\"left\":\"30\",\"isLinked\":false},\"__globals__\":{\"border_color\":\"globals\\\/colors?id=secondary\"},\"padding_mobile\":{\"unit\":\"px\",\"top\":\"10\",\"right\":\"10\",\"bottom\":\"10\",\"left\":\"10\",\"isLinked\":true}},\"elements\":[{\"id\":\"76c97e8\",\"elType\":\"widget\",\"settings\":{\"title\":\"Brief introduction\",\"__globals__\":{\"typography_typography\":\"globals\\\/typography?id=204d764\"}},\"elements\":[],\"widgetType\":\"heading\"},{\"id\":\"40fb5fa\",\"elType\":\"widget\",\"settings\":{\"editor\":\"<p><strong>\\u2160<\\\/strong><strong>.Brief introduction<\\\/strong><\\\/p><p><strong>1.<\\\/strong><strong>Standards:<\\\/strong> IEC 60076-7:2018, GB\\\/T 1094.7-2024, GB\\\/T 6451-2023<\\\/p><p><strong>2.<\\\/strong><strong>Power Rating:<\\\/strong> 30KVA-2500 KVA<\\\/p><p><strong>3.<\\\/strong><strong>Primary Voltage:<\\\/strong> 20kv<\\\/p><p><strong>4.<\\\/strong><strong>Secondary Voltage:<\\\/strong> 0.4kv or as required<\\\/p><p><strong>5.Voltage regulation mode:<\\\/strong> off-circuit tap changing<\\\/p><p><strong>6.Frequency:<\\\/strong> 50HZ or 60HZ<\\\/p><p><strong>7.<\\\/strong><strong>Type:<\\\/strong> 3 Phase Electric Power Transformer<\\\/p><p><strong>8.<\\\/strong><strong>Connection Type:<\\\/strong> Dyn11, Yyn0, or per client specification<\\\/p><p><strong>9.insulation grade\\uff1a<\\\/strong>A<\\\/p><p><strong>10.Cooling method:<\\\/strong> ONAN<\\\/p><p><strong>\\u2161<\\\/strong><strong>.Working conditions<\\\/strong><\\\/p><p><strong>1.<\\\/strong><strong>Ambient Temperature:<\\\/strong> No more than +40\\u2103 No less than -25\\u2103, The monthly average temperature is no more than +30\\u2103, The yearly average temperature is no more than +20\\u2103<\\\/p><p><strong>2.<\\\/strong><strong>Altitude:<\\\/strong> No more than 1000m.<\\\/p><p><strong>3.<\\\/strong><strong>Relative air humidity:<\\\/strong>\\u226490%<\\\/p><p><strong>4.<\\\/strong><strong>installation site:<\\\/strong> no corrosion gas, No obvious dirt<\\\/p><p><strong>5.Scope of application:<\\\/strong> Power transmission and distribution, industrial production, and outdoor power supply.<\\\/p><p><strong>\\u2162<\\\/strong><strong>.The tests for oil-immersed transformer<\\\/strong><\\\/p><p>The tests for oil-immersed transformers in our company can be divided into four categories based on the test stage and purpose: factory tests, type tests, on-site tests, and preventive tests.<\\\/p><p><strong>1.<\\\/strong><strong>Factory Tests (Verification Tests During Manufacturing)<\\\/strong><\\\/p><p>They mainly include: insulation resistance measurement, DC resistance measurement, turns ratio measurement, connection group and polarity test, no-load test, insulating oil test, and sealing test.<\\\/p><p><strong>2<\\\/strong><strong>.Type Tests (Design Verification Tests)<\\\/strong><\\\/p><p>They mainly include: temperature rise test, insulation strength test, short-circuit withstand capability test, zero-sequence impedance test, sound level measurement, tank mechanical strength test, and no-load current harmonic measurement.<\\\/p><p><strong>3.<\\\/strong><strong>On-Site Tests (Acceptance Tests After Installation)<\\\/strong><\\\/p><p>They mainly include: appearance inspection, DC resistance measurement, recheck of turns ratio and connection group, insulating oil breakdown voltage and dielectric loss test, power frequency withstand voltage test (partial), and tap changer operation test.<\\\/p><p><strong>4<\\\/strong><strong>.Preventive Tests (Maintenance Tests During Operation)<\\\/strong><\\\/p><p>They mainly include: insulation resistance and polarization index measurement, winding DC resistance measurement, dielectric loss factor (tan\\u03b4) measurement, insulating oil test, partial discharge measurement, iron core grounding current measurement, bushing test, and infrared thermal imaging detection.<\\\/p><p>The test types for oil-immersed transformers cover the entire life cycle from manufacturing, installation to operation and maintenance. The test focuses at different stages vary: factory tests ensure qualified basic performance, type tests verify design limits, on-site tests guarantee installation quality, and preventive tests prevent operational failures. These tests together form an important guarantee for the safe and reliable operation of transformers.<\\\/p><p><strong>\\u2163<\\\/strong><strong>.<\\\/strong><strong>Component inspection of oil-immersed transformer<\\\/strong><\\\/p><p>Component inspection of oil-immersed transformers is a crucial link to ensure their safe and stable operation, which mainly includes the following contents:<\\\/p><p><strong>1.<\\\/strong><strong>Appearance Inspection:<\\\/strong> Check whether the transformer's appearance is intact, whether there is oil leakage in the oil tank, and whether parts such as junction boxes, insulating bushings, and leads are damaged, rusted, or loose. At the same time, confirm that components like radiators, oil conservators, breathers, and oil level indicators are in normal condition.<\\\/p><p><strong>2.<\\\/strong><strong>Insulation Inspection:<\\\/strong> Use an insulation resistance tester to measure the insulation resistance between windings and ground as well as between windings themselves; the measured values should meet the specified standards. Additionally, conduct dielectric strength tests and insulating oil polarization tests to evaluate insulation performance.<\\\/p><p><strong>3.<\\\/strong><strong>Mechanical Operation Inspection:<\\\/strong> Check whether core equipment such as fans, coolers, pressure relief valves, and voltage regulating valves are operating normally. Ensure that bushings, connecting bolts, and terminal blocks are not loose, so as to guarantee the normal operation of mechanical components.<\\\/p><p><strong>4.<\\\/strong><strong>Oil Quality Inspection:<\\\/strong> Observe the color, odor, and transparency of transformer oil, and check for the presence of mixed impurities. Conduct tower-type oil sampling to inspect sediments and contaminants. Moreover, perform tests on transformer oil such as breakdown voltage, acid value, dielectric loss factor, moisture content, and particle size to determine if the oil quality is good.<\\\/p><p><strong>5.<\\\/strong><strong>Partial Discharge Detection:<\\\/strong> Use partial discharge detectors, such as installing UHF sensors or using high-frequency current transformers and ultrasonic sensors, to detect parts of the transformer such as windings and insulating bushings, and locate the position of the discharge source. If the partial discharge amount exceeds the specified value, the insulation risk needs to be evaluated.<\\\/p><p><strong>6.<\\\/strong><strong>Oil Temperature Inspection:<\\\/strong> Check whether the on-site gauge indications of the transformer's upper-layer oil temperature and high\\\/low winding temperatures are consistent with the readings on the control panel or CRT display. Verify if all temperatures are normal and whether they are close to or exceed the maximum allowable limits. At the same time, touch the surface of the radiating pipes by hand to check if the cooling device is in good condition.<\\\/p><p><strong>7.<\\\/strong><strong>Voltage and Current Inspection:<\\\/strong> Measure whether the voltage and current on the high-voltage side and low-voltage side of the transformer are within the normal range. Generally, the voltage on the high-voltage side must not exceed 105% of the nominal voltage value of its corresponding tap, to ensure the transformer operates within rated parameters.<\\\/p><p><strong>8.<\\\/strong><strong>Sound Inspection:<\\\/strong> A normally operating transformer emits a uniform \\\"buzzing\\\" sound. During inspection, pay attention to the presence of abnormal sounds such as sharp noises or crackling sounds. Abnormal sounds may be caused by internal faults or looseness and other reasons.<\\\/p><p><strong>\\u2164<\\\/strong><strong>.<\\\/strong><strong>Certificate: <\\\/strong>CE, UL, ISO, SGS, CCC<\\\/p>\",\"paragraph_spacing\":{\"unit\":\"px\",\"size\":16,\"sizes\":[]},\"_padding\":{\"unit\":\"px\",\"top\":\"20\",\"right\":\"0\",\"bottom\":\"0\",\"left\":\"0\",\"isLinked\":false},\"__globals__\":{\"typography_typography\":\"globals\\\/typography?id=d06f507\"}},\"elements\":[],\"widgetType\":\"text-editor\"}],\"isInner\":true,\"isLocked\":true},{\"id\":\"2e2154e\",\"elType\":\"container\",\"settings\":{\"_title\":\"Tab #2\",\"content_width\":\"full\",\"border_border\":\"solid\",\"border_width\":{\"unit\":\"px\",\"top\":\"1\",\"right\":\"1\",\"bottom\":\"1\",\"left\":\"1\",\"isLinked\":true},\"padding\":{\"unit\":\"px\",\"top\":\"50\",\"right\":\"30\",\"bottom\":\"50\",\"left\":\"30\",\"isLinked\":false},\"__globals__\":{\"border_color\":\"globals\\\/colors?id=secondary\"},\"padding_mobile\":{\"unit\":\"px\",\"top\":\"10\",\"right\":\"10\",\"bottom\":\"10\",\"left\":\"10\",\"isLinked\":true}},\"elements\":[{\"id\":\"0f27574\",\"elType\":\"widget\",\"settings\":{\"title\":\"Structural Features\",\"__globals__\":{\"typography_typography\":\"globals\\\/typography?id=204d764\"}},\"elements\":[],\"widgetType\":\"heading\"},{\"id\":\"f30b232\",\"elType\":\"widget\",\"settings\":{\"editor\":\"<p><strong>\\u2160.<\\\/strong><strong>Product features<\\\/strong><\\\/p><p>1.The iron core is made of high-quality, high-performance silicon steel sheets with high magnetic permeability, resulting in low no-load loss.<\\\/p><p>2.The high-voltage windings all adopt a multi-layer cylindrical structure to improve the voltage impulse distribution of the windings. The low-voltage windings, with a capacity range of 30KVA to 4000KVA, use a cylindrical or spiral structure. They feature high mechanical strength, balanced ampere-turn distribution, and strong short-circuit resistance.<\\\/p><p>3.A fixed structure is installed inside the transformer to prevent displacement during transportation. All fasteners are equipped with locking nuts to ensure they do not loosen during long-term operation.<\\\/p><p>4.This product has a fully sealed structure. During packaging, a vacuum oil-filling process is adopted to completely remove moisture from the transformer, ensuring isolation between transformer oil and external air, preventing oil aging, and improving the operational reliability of the transformer.<\\\/p><p>5.The product is equipped with a pressure relief valve, a signal thermometer, a gas relay, etc., to ensure the safe operation of the transformer.<\\\/p><p>6.This product uses a corrugated oil tank. Such a tank is simple to process, has high mechanical strength, achieves good welding results, and is leak-proof. Moreover, due to the strong fluidity of the oil, the heat dissipation capacity of the product is enhanced.<\\\/p><p>7.The surface of the oil-immersed power transformer is treated with degreasing, derusting, and phosphating, followed by the application of primer and topcoat.<\\\/p><p>8.This product can meet the special operational requirements of industries such as metallurgy and petrochemicals, as well as the special operational needs of humid and dirty environments.<\\\/p><p><strong>\\u2161<\\\/strong><strong>.<\\\/strong><strong>Product <\\\/strong><strong>Advantages<\\\/strong><\\\/p><p>1.High heat dissipation efficiency, suitable for large - capacity scenarios. The thermal conductivity of insulating oil (mineral oil or synthetic oil) is far superior to that of air (the main heat dissipation medium of dry - type transformers). Moreover, the heat from windings and iron cores can be quickly taken away through the natural convection of oil or forced circulation (such as adding oil pumps and radiators).<\\\/p><p>2.Excellent insulation performance and strong high-voltage resistance. The breakdown field strength of insulating oil (about 25 - 35kV\\\/mm) is higher than that of air (about 3kV\\\/mm), which can provide more reliable insulation protection under high voltage.<\\\/p><p>3.Low cost and high cost - performance ratio. The raw material cost of insulating oil is lower than that of insulating materials such as epoxy resin and Nomex paper used in dry - type transformers. In addition, the structural process of oil - immersed transformers (such as iron core and winding encapsulation) is relatively simple, resulting in lower production and manufacturing costs.<\\\/p><p>4.Long maintenance cycle and good weather resistance. Insulating oil has a sealing and protective effect, which can isolate the erosion of moisture and dust in the air on windings and iron cores, and reduce the rate of oxidative aging. Daily maintenance mainly involves regular detection of oil quality (such as dielectric loss and water content) and replacement of insulating oil, with a cycle usually of 1 - 3 years. When installed outdoors, the closed oil tank of the oil - immersed transformer can resist the impact of natural environments such as rain, snow and high temperature, making it suitable for open - air scenarios in rural areas and suburbs.<\\\/p><p>5.Strong overload capacity. Insulating oil has a large heat capacity. During short - term overload (such as during peak electricity consumption periods), the oil temperature rises slowly, and it can bear loads exceeding the rated capacity for a certain period of time.<\\\/p>\",\"_padding\":{\"unit\":\"px\",\"top\":\"20\",\"right\":\"0\",\"bottom\":\"0\",\"left\":\"0\",\"isLinked\":false},\"__globals__\":{\"typography_typography\":\"globals\\\/typography?id=d06f507\"}},\"elements\":[],\"widgetType\":\"text-editor\"}],\"isInner\":true,\"isLocked\":true},{\"id\":\"764f307\",\"elType\":\"container\",\"settings\":{\"_title\":\"Tab #3\",\"content_width\":\"full\",\"padding\":{\"unit\":\"px\",\"top\":\"50\",\"right\":\"30\",\"bottom\":\"50\",\"left\":\"30\",\"isLinked\":false},\"border_border\":\"solid\",\"border_width\":{\"unit\":\"px\",\"top\":\"1\",\"right\":\"1\",\"bottom\":\"1\",\"left\":\"1\",\"isLinked\":true},\"__globals__\":{\"border_color\":\"globals\\\/colors?id=secondary\"},\"padding_mobile\":{\"unit\":\"px\",\"top\":\"10\",\"right\":\"10\",\"bottom\":\"10\",\"left\":\"10\",\"isLinked\":true}},\"elements\":[{\"id\":\"9872304\",\"elType\":\"widget\",\"settings\":{\"title\":\"Product structure\",\"__globals__\":{\"typography_typography\":\"globals\\\/typography?id=204d764\"}},\"elements\":[],\"widgetType\":\"heading\"},{\"id\":\"b1b2cc5\",\"elType\":\"widget\",\"settings\":{\"editor\":\"<p>The core processes can be divided into five major stages: core component manufacturing, final assembly, insulation treatment, oil filling and vacuum treatment, and test detection. The specific procedures are as follows:<\\\/p>\",\"_padding\":{\"unit\":\"px\",\"top\":\"20\",\"right\":\"0\",\"bottom\":\"0\",\"left\":\"0\",\"isLinked\":false}},\"elements\":[],\"widgetType\":\"text-editor\"},{\"id\":\"5474a64\",\"elType\":\"container\",\"settings\":{\"boxed_width\":{\"unit\":\"%\",\"size\":100,\"sizes\":[]},\"boxed_width_tablet\":{\"unit\":\"%\",\"size\":\"\",\"sizes\":[]},\"boxed_width_mobile\":{\"unit\":\"%\",\"size\":\"\",\"sizes\":[]},\"flex_direction\":\"row\",\"flex_align_items\":\"center\",\"padding\":{\"unit\":\"px\",\"top\":\"0\",\"right\":\"0\",\"bottom\":\"0\",\"left\":\"0\",\"isLinked\":false}},\"elements\":[{\"id\":\"24a71fc\",\"elType\":\"widget\",\"settings\":{\"editor\":\"<p><strong>\\u2160.<\\\/strong><strong>Core Component Manufacturing<\\\/strong><\\\/p><p>The core components of oil-immersed transformers include the iron core, windings, and oil tank. The manufacturing precision of these three components directly affects the performance of the transformer.<\\\/p><p><strong>1.<\\\/strong><strong>Iron Core Manufacturing<\\\/strong><\\\/p><p>Cutting of silicon steel sheets, lamination and pressing, iron core drying, binding, and grounding.<\\\/p><p><strong>2.<\\\/strong><strong>Winding Manufacturing<\\\/strong><\\\/p><p>Conductor processing, winding technology, pre-drying, and shaping.<\\\/p><p><strong>3.<\\\/strong><strong>Oil Tank and Accessory Manufacturing<\\\/strong><\\\/p><p>Oil tank welding, heat dissipation structure processing, and accessory assembly.<\\\/p>\",\"typography_typography\":\"custom\",\"typography_font_family\":\"Arial\",\"typography_font_size\":{\"unit\":\"px\",\"size\":16,\"sizes\":[]},\"typography_line_height\":{\"unit\":\"px\",\"size\":20,\"sizes\":[]},\"paragraph_spacing\":{\"unit\":\"px\",\"size\":10,\"sizes\":[]},\"_padding\":{\"unit\":\"px\",\"top\":\"0\",\"right\":\"10\",\"bottom\":\"0\",\"left\":\"0\",\"isLinked\":false},\"_element_width\":\"initial\",\"_element_custom_width\":{\"unit\":\"%\",\"size\":70,\"sizes\":[]},\"__globals__\":{\"typography_typography\":\"\",\"text_color\":\"globals\\\/colors?id=7268ef8\"},\"_padding_mobile\":{\"unit\":\"px\",\"top\":\"0\",\"right\":\"0\",\"bottom\":\"0\",\"left\":\"0\",\"isLinked\":true},\"_element_custom_width_mobile\":{\"unit\":\"%\",\"size\":100,\"sizes\":[]}},\"elements\":[],\"widgetType\":\"text-editor\"},{\"id\":\"4144565\",\"elType\":\"container\",\"settings\":{\"content_width\":\"full\",\"width\":{\"unit\":\"%\",\"size\":30,\"sizes\":[]},\"padding\":{\"unit\":\"px\",\"top\":\"0\",\"right\":\"0\",\"bottom\":\"0\",\"left\":\"0\",\"isLinked\":false}},\"elements\":[{\"id\":\"4d5efec\",\"elType\":\"widget\",\"settings\":{\"image\":{\"url\":\"https:\\\/\\\/www.ketetransformer.com\\\/wp-content\\\/uploads\\\/2025\\\/08\\\/10kV_SH15_SH21_SH25_Oil-immersed_Amorphous_Alloy_Distribution_Transformer1WH_1000x1000px_WH_1000x1000px1_WH_1000x1000px.webp\",\"id\":4610,\"size\":\"\",\"alt\":\"\",\"source\":\"library\"},\"width\":{\"unit\":\"px\",\"size\":\"\",\"sizes\":[]},\"width_tablet\":{\"unit\":\"px\",\"size\":\"\",\"sizes\":[]},\"width_mobile\":{\"unit\":\"px\",\"size\":\"\",\"sizes\":[]},\"_element_custom_width\":{\"unit\":\"%\",\"size\":30,\"sizes\":[]}},\"elements\":[],\"widgetType\":\"image\"}],\"isInner\":true}],\"isInner\":true},{\"id\":\"316f71b\",\"elType\":\"container\",\"settings\":{\"boxed_width\":{\"unit\":\"%\",\"size\":100,\"sizes\":[]},\"boxed_width_tablet\":{\"unit\":\"%\",\"size\":\"\",\"sizes\":[]},\"boxed_width_mobile\":{\"unit\":\"%\",\"size\":\"\",\"sizes\":[]},\"flex_direction\":\"row\",\"flex_align_items\":\"center\",\"padding\":{\"unit\":\"px\",\"top\":\"0\",\"right\":\"0\",\"bottom\":\"0\",\"left\":\"0\",\"isLinked\":false},\"flex_direction_mobile\":\"row-reverse\"},\"elements\":[{\"id\":\"5a64ba5\",\"elType\":\"widget\",\"settings\":{\"image\":{\"url\":\"https:\\\/\\\/www.ketetransformer.com\\\/wp-content\\\/uploads\\\/2025\\\/08\\\/10kV_SH15_SH21_SH25_Oil-immersed_Amorphous_Alloy_Distribution_Transformer1WH_2000x1000px_WH_1000x1000px1_WH_1000x1000px.webp\",\"id\":4614,\"size\":\"\",\"alt\":\"\",\"source\":\"library\"},\"width\":{\"unit\":\"px\",\"size\":\"\",\"sizes\":[]},\"width_tablet\":{\"unit\":\"px\",\"size\":\"\",\"sizes\":[]},\"width_mobile\":{\"unit\":\"px\",\"size\":\"\",\"sizes\":[]},\"_element_width\":\"initial\",\"_element_custom_width\":{\"unit\":\"%\",\"size\":40,\"sizes\":[]},\"_element_custom_width_mobile\":{\"unit\":\"%\",\"size\":100,\"sizes\":[]}},\"elements\":[],\"widgetType\":\"image\"},{\"id\":\"415ab2d\",\"elType\":\"widget\",\"settings\":{\"editor\":\"<p><strong>\\u2161.<\\\/strong><strong>Final Assembly<\\\/strong><\\\/p><p>Assembling core components such as the iron core, windings, and insulators into an integrated transformer is a key step to ensure structural stability and insulation reliability, including core assembly, lead installation, overall fastening, and core drying.<\\\/p>\",\"typography_typography\":\"custom\",\"typography_font_family\":\"Arial\",\"typography_font_size\":{\"unit\":\"px\",\"size\":16,\"sizes\":[]},\"typography_line_height\":{\"unit\":\"px\",\"size\":20,\"sizes\":[]},\"paragraph_spacing\":{\"unit\":\"px\",\"size\":10,\"sizes\":[]},\"_padding\":{\"unit\":\"px\",\"top\":\"0\",\"right\":\"10\",\"bottom\":\"0\",\"left\":\"0\",\"isLinked\":false},\"_element_width\":\"initial\",\"_element_custom_width\":{\"unit\":\"%\",\"size\":70,\"sizes\":[]},\"__globals__\":{\"typography_typography\":\"\",\"text_color\":\"globals\\\/colors?id=7268ef8\"},\"_padding_mobile\":{\"unit\":\"px\",\"top\":\"0\",\"right\":\"0\",\"bottom\":\"0\",\"left\":\"0\",\"isLinked\":true},\"_element_custom_width_mobile\":{\"unit\":\"%\",\"size\":100,\"sizes\":[]}},\"elements\":[],\"widgetType\":\"text-editor\"}],\"isInner\":true},{\"id\":\"3a0ed7f\",\"elType\":\"container\",\"settings\":{\"boxed_width\":{\"unit\":\"%\",\"size\":100,\"sizes\":[]},\"boxed_width_tablet\":{\"unit\":\"%\",\"size\":\"\",\"sizes\":[]},\"boxed_width_mobile\":{\"unit\":\"%\",\"size\":\"\",\"sizes\":[]},\"flex_direction\":\"row\",\"flex_align_items\":\"center\",\"padding\":{\"unit\":\"px\",\"top\":\"0\",\"right\":\"0\",\"bottom\":\"0\",\"left\":\"0\",\"isLinked\":false}},\"elements\":[{\"id\":\"8c7e7b3\",\"elType\":\"widget\",\"settings\":{\"editor\":\"<p><strong>\\u2162.<\\\/strong><strong>Oil Filling and Vacuum Treatment<\\\/strong><\\\/p><p>Insulating oil pre-treatment, filtration, vacuum dehydration and degassing, vacuum oil filling, and hot oil circulation.<\\\/p>\",\"typography_typography\":\"custom\",\"typography_font_family\":\"Arial\",\"typography_font_size\":{\"unit\":\"px\",\"size\":16,\"sizes\":[]},\"typography_line_height\":{\"unit\":\"px\",\"size\":20,\"sizes\":[]},\"paragraph_spacing\":{\"unit\":\"px\",\"size\":10,\"sizes\":[]},\"_padding\":{\"unit\":\"px\",\"top\":\"0\",\"right\":\"10\",\"bottom\":\"0\",\"left\":\"0\",\"isLinked\":false},\"_element_width\":\"initial\",\"_element_custom_width\":{\"unit\":\"%\",\"size\":70,\"sizes\":[]},\"__globals__\":{\"typography_typography\":\"\",\"text_color\":\"globals\\\/colors?id=7268ef8\"},\"_padding_mobile\":{\"unit\":\"px\",\"top\":\"0\",\"right\":\"0\",\"bottom\":\"0\",\"left\":\"0\",\"isLinked\":true},\"_element_custom_width_mobile\":{\"unit\":\"%\",\"size\":100,\"sizes\":[]}},\"elements\":[],\"widgetType\":\"text-editor\"},{\"id\":\"e8418c8\",\"elType\":\"container\",\"settings\":{\"content_width\":\"full\",\"width\":{\"unit\":\"%\",\"size\":30,\"sizes\":[]},\"padding\":{\"unit\":\"px\",\"top\":\"0\",\"right\":\"0\",\"bottom\":\"0\",\"left\":\"0\",\"isLinked\":false}},\"elements\":[{\"id\":\"6b4fa40\",\"elType\":\"widget\",\"settings\":{\"image\":{\"url\":\"https:\\\/\\\/www.ketetransformer.com\\\/wp-content\\\/uploads\\\/2025\\\/09\\\/10kV_SH15_SH21_SH25_Oil-immersed_Amorphous_Alloy_Distribution_Transformer1WH_3000x1000px_WH_1000x1000px1_WH_1000x1000px.png\",\"id\":4646,\"size\":\"\",\"alt\":\"\",\"source\":\"library\"},\"width\":{\"unit\":\"px\",\"size\":\"\",\"sizes\":[]},\"width_tablet\":{\"unit\":\"px\",\"size\":\"\",\"sizes\":[]},\"width_mobile\":{\"unit\":\"px\",\"size\":\"\",\"sizes\":[]},\"_element_custom_width\":{\"unit\":\"%\",\"size\":30,\"sizes\":[]}},\"elements\":[],\"widgetType\":\"image\"}],\"isInner\":true}],\"isInner\":true},{\"id\":\"db9ebd4\",\"elType\":\"container\",\"settings\":{\"boxed_width\":{\"unit\":\"%\",\"size\":100,\"sizes\":[]},\"boxed_width_tablet\":{\"unit\":\"%\",\"size\":\"\",\"sizes\":[]},\"boxed_width_mobile\":{\"unit\":\"%\",\"size\":\"\",\"sizes\":[]},\"flex_direction\":\"row\",\"flex_align_items\":\"center\",\"padding\":{\"unit\":\"px\",\"top\":\"0\",\"right\":\"0\",\"bottom\":\"0\",\"left\":\"0\",\"isLinked\":false},\"flex_direction_mobile\":\"row-reverse\"},\"elements\":[{\"id\":\"0c75ed8\",\"elType\":\"widget\",\"settings\":{\"image\":{\"url\":\"https:\\\/\\\/www.ketetransformer.com\\\/wp-content\\\/uploads\\\/2025\\\/09\\\/10kV_SH15_SH21_SH25_Oil-immersed_Amorphous_Alloy_Distribution_Transformer1WH_4000x1000px_WH_1000x1000px1_WH_1000x1000px.png\",\"id\":4647,\"size\":\"\",\"alt\":\"\",\"source\":\"library\"},\"width\":{\"unit\":\"px\",\"size\":\"\",\"sizes\":[]},\"width_tablet\":{\"unit\":\"px\",\"size\":\"\",\"sizes\":[]},\"width_mobile\":{\"unit\":\"px\",\"size\":\"\",\"sizes\":[]},\"_element_width\":\"initial\",\"_element_custom_width\":{\"unit\":\"%\",\"size\":40,\"sizes\":[]},\"_element_custom_width_mobile\":{\"unit\":\"%\",\"size\":100,\"sizes\":[]}},\"elements\":[],\"widgetType\":\"image\"},{\"id\":\"61c2596\",\"elType\":\"widget\",\"settings\":{\"editor\":\"<p><strong>\\u2163.<\\\/strong><strong>Overall Sealing and Appearance Treatment<\\\/strong><\\\/p><p><strong>1.<\\\/strong><strong>Seal Testing:<\\\/strong> After oil filling, the transformer is left to stand for 24 hours. Tank welds and accessory interfaces are checked for leaks (using soapy water to detect bubbles). Leak points are repaired by welding or replacing seals.<\\\/p><p><strong>2.<\\\/strong><strong>Appearance Treatment:<\\\/strong> The tank surface is derusted, phosphatized, then painted with anti-rust paint and topcoat (outdoor products require weather-resistant coatings).<\\\/p>\",\"typography_typography\":\"custom\",\"typography_font_family\":\"Arial\",\"typography_font_size\":{\"unit\":\"px\",\"size\":16,\"sizes\":[]},\"typography_line_height\":{\"unit\":\"px\",\"size\":20,\"sizes\":[]},\"paragraph_spacing\":{\"unit\":\"px\",\"size\":10,\"sizes\":[]},\"_padding\":{\"unit\":\"px\",\"top\":\"0\",\"right\":\"10\",\"bottom\":\"0\",\"left\":\"0\",\"isLinked\":false},\"_element_width\":\"initial\",\"_element_custom_width\":{\"unit\":\"%\",\"size\":70,\"sizes\":[]},\"__globals__\":{\"typography_typography\":\"\",\"text_color\":\"globals\\\/colors?id=7268ef8\"},\"_padding_mobile\":{\"unit\":\"px\",\"top\":\"0\",\"right\":\"0\",\"bottom\":\"0\",\"left\":\"0\",\"isLinked\":true},\"_element_custom_width_mobile\":{\"unit\":\"%\",\"size\":100,\"sizes\":[]}},\"elements\":[],\"widgetType\":\"text-editor\"}],\"isInner\":true},{\"id\":\"5fc33e8\",\"elType\":\"container\",\"settings\":{\"boxed_width\":{\"unit\":\"%\",\"size\":100,\"sizes\":[]},\"boxed_width_tablet\":{\"unit\":\"%\",\"size\":\"\",\"sizes\":[]},\"boxed_width_mobile\":{\"unit\":\"%\",\"size\":\"\",\"sizes\":[]},\"flex_direction\":\"row\",\"flex_align_items\":\"center\",\"padding\":{\"unit\":\"px\",\"top\":\"0\",\"right\":\"0\",\"bottom\":\"0\",\"left\":\"0\",\"isLinked\":false}},\"elements\":[{\"id\":\"4652b00\",\"elType\":\"widget\",\"settings\":{\"editor\":\"<p><strong>\\u2164.<\\\/strong><strong>Test Detection<\\\/strong><\\\/p><p>After production, transformers must pass rigorous tests to ensure performance compliance, including routine tests, type tests, and special 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#3\",\"content_width\":\"full\",\"padding\":{\"unit\":\"px\",\"top\":\"50\",\"right\":\"30\",\"bottom\":\"50\",\"left\":\"30\",\"isLinked\":false},\"border_border\":\"solid\",\"border_width\":{\"unit\":\"px\",\"top\":\"1\",\"right\":\"1\",\"bottom\":\"1\",\"left\":\"1\",\"isLinked\":true},\"__globals__\":{\"border_color\":\"globals\\\/colors?id=secondary\"},\"padding_mobile\":{\"unit\":\"px\",\"top\":\"10\",\"right\":\"10\",\"bottom\":\"10\",\"left\":\"10\",\"isLinked\":true}},\"elements\":[{\"id\":\"11bf213\",\"elType\":\"widget\",\"settings\":{\"title\":\"     FAQs\",\"__globals__\":{\"typography_typography\":\"globals\\\/typography?id=204d764\"}},\"elements\":[],\"widgetType\":\"heading\"},{\"id\":\"692e57a\",\"elType\":\"widget\",\"settings\":{\"editor\":\"<p><strong>\\u2160.Basic Maintenance Service<\\\/strong><\\\/p>\",\"typography_typography\":\"custom\",\"typography_font_family\":\"Arial\",\"typography_font_size\":{\"unit\":\"px\",\"size\":16,\"sizes\":[]},\"typography_line_height\":{\"unit\":\"px\",\"size\":20,\"sizes\":[]},\"paragraph_spacing\":{\"unit\":\"px\",\"size\":10,\"sizes\":[]},\"_padding\":{\"unit\":\"px\",\"top\":\"020\",\"right\":\"0\",\"bottom\":\"0\",\"left\":\"0\",\"isLinked\":false},\"_element_width\":\"initial\",\"_element_custom_width\":{\"unit\":\"%\",\"size\":65,\"sizes\":[]},\"__globals__\":{\"typography_typography\":\"\",\"text_color\":\"globals\\\/colors?id=7268ef8\"}},\"elements\":[],\"widgetType\":\"text-editor\"},{\"id\":\"d080af3\",\"elType\":\"widget\",\"widgetType\":\"nested-accordion\",\"settings\":{\"items\":[{\"item_title\":\"1.What are the rated voltage and power of the Kete oil-immersed transformer?\",\"_id\":\"1d2b564\"},{\"item_title\":\"2.What type of cooling system does the Kete oil-immersed transformer use?\",\"_id\":\"6187cb3\"},{\"item_title\":\"3.How does the cooling system of the Kete oil-immersed transformer affect its performance under different climatic conditions\\uff1f\",\"_id\":\"9244a66\"},{\"item_title\":\"4.What is the main basis for choosing between ONAN and ONAF cooling methods for kete oil-immersed transformers?\",\"_id\":\"b474fe0\"},{\"item_title\":\"5.How long is the service life of Kete oil-immersed transformers? \",\"_id\":\"bab7d20\"},{\"item_title\":\"6.What are the factors that affect the service life of Kete oil-immersed transformers?\",\"_id\":\"a2a227a\"},{\"item_title\":\"7.How to maintain transformers to maximize the service life of Kete oil-immersed transformers?\",\"_id\":\"668e117\"},{\"item_title\":\"8.What type of oil is used in Kete oil-immersed transformers? What advantages does this type of oil have?\",\"_id\":\"8dbbd3a\"},{\"item_title\":\"9.What protective measures does the Kete oil-immersed transformer have against overload, overheating, and short circuits?\",\"_id\":\"1026d03\"},{\"item_title\":\"10.What aspects of Kete oil-immersed transformers can be customized?\",\"_id\":\"c15e883\"}],\"accordion_item_title_icon\":{\"value\":\"fas fa-angle-right\",\"library\":\"fa-solid\"},\"accordion_item_title_icon_active\":{\"value\":\"fas fa-angle-down\",\"library\":\"fa-solid\"},\"default_state\":\"all_collapsed\",\"max_items_expended\":\"multiple\",\"accordion_item_title_space_between\":{\"unit\":\"px\",\"size\":10,\"sizes\":[]},\"accordion_background_normal_background\":\"classic\",\"accordion_background_normal_color\":\"#F2F2F2\",\"accordion_background_hover_background\":\"classic\",\"accordion_background_hover_color\":\"#0055AA\",\"accordion_background_active_background\":\"classic\",\"accordion_background_active_color\":\"#0055AA\",\"title_typography_typography\":\"custom\",\"title_typography_font_family\":\"Arial\",\"title_typography_font_size\":{\"unit\":\"px\",\"size\":14,\"sizes\":[]},\"title_typography_font_weight\":\"600\",\"hover_title_color\":\"#FFFFFF\",\"active_title_color\":\"#FFFFFF\",\"_padding\":{\"unit\":\"px\",\"top\":\"20\",\"right\":\"0\",\"bottom\":\"0\",\"left\":\"0\",\"isLinked\":false},\"__globals__\":{\"title_typography_typography\":\"\",\"accordion_background_hover_color\":\"globals\\\/colors?id=primary\",\"hover_title_color\":\"\",\"active_title_color\":\"\",\"accordion_background_active_color\":\"globals\\\/colors?id=primary\",\"accordion_background_normal_color\":\"globals\\\/colors?id=556a01c\"}},\"elements\":[{\"id\":\"05eeb49\",\"elType\":\"container\",\"settings\":{\"_title\":\"\\u9879\\u76ee #1\",\"content_width\":\"full\",\"background_background\":\"classic\",\"padding\":{\"unit\":\"px\",\"top\":\"0\",\"right\":\"0\",\"bottom\":\"0\",\"left\":\"0\",\"isLinked\":true},\"__globals__\":{\"background_color\":\"\"}},\"elements\":[{\"id\":\"d60b237\",\"elType\":\"widget\",\"settings\":{\"editor\":\"<p><strong>\\u2460<\\\/strong><strong>Primary Voltage (High Voltage Side): <\\\/strong>Typically range from 1 kV to 66 kV, with common ratings like 6kV, 10 kV, 11KV, 20KV, 33 kV, 34.5KV, 35KV<\\\/p><p><strong>\\u2461<\\\/strong><strong>Secondary Voltage (Low Voltage Side): <\\\/strong>Common secondary voltage ratings include:<\\\/p><p>\\u00b7400 V (0.4 kV) for industrial and residential supply<\\\/p><p>\\u00b711 kV or 33 kV<\\\/p><p><strong>\\u2462<\\\/strong><strong>Customization: <\\\/strong>Transformers can be designed for specific applications. If you have specific power requirements or voltage needs, we can specially design and customize transformers to meet your demands.<\\\/p>\",\"_padding\":{\"unit\":\"px\",\"top\":\"20\",\"right\":\"0\",\"bottom\":\"0\",\"left\":\"0\",\"isLinked\":false},\"__globals__\":{\"typography_typography\":\"globals\\\/typography?id=d06f507\"}},\"elements\":[],\"widgetType\":\"text-editor\"}],\"isInner\":true,\"isLocked\":true},{\"id\":\"9b6bfdb\",\"elType\":\"container\",\"settings\":{\"_title\":\"\\u9879\\u76ee #1\",\"content_width\":\"full\",\"background_background\":\"classic\",\"padding\":{\"unit\":\"px\",\"top\":\"0\",\"right\":\"0\",\"bottom\":\"0\",\"left\":\"0\",\"isLinked\":true},\"__globals__\":{\"background_color\":\"\"}},\"elements\":[{\"id\":\"3e23d10\",\"elType\":\"widget\",\"settings\":{\"editor\":\"<p>Kete oil-immersed transformers mainly adopt two common cooling methods: ONAN and ONAF.<\\\/p><p>\\u2460<strong>Scope of Application of ONAN<\\\/strong><\\\/p><p><strong>\\u00b7<\\\/strong><strong>Transformers with small capacity<\\\/strong><\\\/p><p>Typical applicable capacity: Usually used for transformers of 10kV class with 500kVA and below, and 35kV class with 1000kVA and below.<\\\/p><p>Reason: Small-capacity transformers have low losses (small heat generation), and natural heat dissipation can meet the temperature rise requirements, with a simple structure and low cost.<\\\/p><p><strong>\\u00b7<\\\/strong><strong>Scenarios with loose installation environment<\\\/strong><\\\/p><p>Suitable for outdoor open spaces, well-ventilated indoor distribution rooms, or areas with low ambient temperatures.<\\\/p><p>If installed in enclosed spaces (such as basements), additional evaluation of heat dissipation conditions is required, and the cooling method may need to be upgraded.<\\\/p><p><strong>\\u00b7<\\\/strong><strong>Transformers with low load rate or intermittent operation<\\\/strong><\\\/p><p>For transformers that are in a light load state for a long time (load rate &lt; 50%), the heat dissipation capacity of ONAN is sufficient, without wasting energy consumption from forced cooling.<\\\/p><p>\\u2461<strong>Scope of Application of ONAF<\\\/strong><\\\/p><p><strong>\\u00b7<\\\/strong><strong>Medium and large capacity transformers<\\\/strong><\\\/p><p>Typical applicable capacity: 10kV class with 800kVA and above, 35kV class with 1600kVA and above for small and medium-sized transformers.<\\\/p><p>Reason: Medium and large-capacity transformers have high losses (large copper loss and iron loss), and natural heat dissipation cannot meet the temperature rise limit, so fans are needed to assist in enhancing heat dissipation.<\\\/p><p><strong>\\u00b7<\\\/strong><strong>Transformers with high load rate or continuous operation<\\\/strong><\\\/p><p>Suitable for scenarios with long-term full-load operation or large load fluctuations (needing to cope with short-term overload), such as main transformers in industrial plants and hub transformers in urban distribution networks.<\\\/p><p><strong>\\u00b7<\\\/strong><strong>Environments with limited heat dissipation conditions<\\\/strong><\\\/p><p>If the transformer is installed in a poorly ventilated indoor environment or in areas with high ambient temperatures (such as tropical regions), ONAF can make up for the deficiency of natural heat dissipation through forced air cooling, avoiding excessive oil temperature that affects service life.<\\\/p>\",\"_padding\":{\"unit\":\"px\",\"top\":\"20\",\"right\":\"0\",\"bottom\":\"0\",\"left\":\"0\",\"isLinked\":false},\"__globals__\":{\"typography_typography\":\"globals\\\/typography?id=d06f507\"}},\"elements\":[],\"widgetType\":\"text-editor\"}],\"isInner\":true,\"isLocked\":true},{\"id\":\"eb6a4dc\",\"elType\":\"container\",\"settings\":{\"_title\":\"\\u9879\\u76ee #1\",\"content_width\":\"full\",\"background_background\":\"classic\",\"padding\":{\"unit\":\"px\",\"top\":\"0\",\"right\":\"0\",\"bottom\":\"0\",\"left\":\"0\",\"isLinked\":true},\"__globals__\":{\"background_color\":\"\"}},\"elements\":[{\"id\":\"5f1cf45\",\"elType\":\"widget\",\"settings\":{\"editor\":\"<p>The impact of ONAN (Oil-Immersed Natural Air Cooling) and ONAF (Oil-Immersed Forced Air Cooling) cooling systems of Kete oil-immersed transformers on performance under different climatic conditions is as follows:<\\\/p><p>\\u2460<strong>Impact of High-Temperature Climate<\\\/strong><\\\/p><p><strong>\\u00b7<\\\/strong><strong>ONAN Cooling System:<\\\/strong> When the ambient temperature exceeds 40\\u00b0C, the heat dissipation efficiency of the ONAN cooling system decreases significantly, potentially dropping to approximately 60%. This is because high temperatures reduce the viscosity of the oil, weakening its fluidity and thus lowering the efficiency of natural convection heat dissipation. At this point, the winding temperature of the transformer rises rapidly, accelerating insulation aging. According to the Arrhenius law, the insulation life is halved for every 8\\u00b0C increase in temperature. Meanwhile, high temperatures cause a decrease in the magnetic permeability of silicon steel sheets and an increase in eddy current losses, reducing energy efficiency. The transformer may need to be derated; otherwise, there are risks of insulation damage and fire.<\\\/p><p><strong>\\u00b7<\\\/strong><strong>ONAF Cooling System:<\\\/strong> In high-temperature environments, the cooling effect of the fans in the ONAF cooling system diminishes. Although heat dissipation can be enhanced by adding auxiliary cooling equipment, the overall performance is still affected to a certain extent. However, compared to the ONAN cooling system, the ONAF system, with active heat dissipation by fans, achieves higher heat dissipation efficiency under the same high-temperature conditions. It can better control the transformer\\u2019s winding temperature and delay insulation aging.<\\\/p><p>\\u2461<strong>Impact of Low-Temperature Climate<\\\/strong><\\\/p><p><strong>\\u00b7<\\\/strong><strong>ONAN Cooling System:<\\\/strong> In low-temperature environments, such as temperatures below -30\\u00b0C, the viscosity of transformer oil increases sharply, leading to greater circulation resistance. This may cause heat dissipation to stagnate, or even result in oil solidification (the pour point of transformer oil is approximately -45\\u00b0C). In addition, dissolved water in the oil may turn into suspended ice crystals, increasing the risk of partial discharge. During cold startup, mechanical stress may cause welds or insulation to crack due to brittleness. Therefore, in extremely low temperatures, preheating to above 0\\u00b0C is required before commissioning.<\\\/p><p><strong>\\u00b7<\\\/strong><strong>ONAF Cooling System:<\\\/strong> In low-temperature environments, apart from the issue of increased oil viscosity similar to that of ONAN, the ONAF cooling system also faces the risk of fan icing. This can affect the normal operation of the fans and further impair heat dissipation efficiency.<\\\/p><p>\\u2462<strong>Impact of High-Humidity and Salt-Spray Climate<\\\/strong><\\\/p><p><strong>\\u00b7<\\\/strong><strong>ONAN Cooling System:<\\\/strong> In high-humidity environments with humidity exceeding 90%, the moisture content of insulation paper increases, causing the dielectric strength to decrease by approximately 30% and reducing the transformer\\u2019s insulation performance. In salt-spray environments, winding joints are corroded, increasing contact resistance and leading to local overheating, which affects the transformer\\u2019s normal operation and service life.<\\\/p><p><strong>\\u00b7<\\\/strong><strong>ONAF Cooling System:<\\\/strong> High-humidity and salt-spray climates affect the ONAF cooling system similarly to ONAN, mainly causing insulation performance degradation and component corrosion. However, since the ONAF cooling system is equipped with rotating components such as fans, in high-humidity environments, additional attention must be paid to preventing issues such as moisture-induced short circuits in fan motors.<\\\/p>\",\"_padding\":{\"unit\":\"px\",\"top\":\"20\",\"right\":\"0\",\"bottom\":\"0\",\"left\":\"0\",\"isLinked\":false},\"__globals__\":{\"typography_typography\":\"globals\\\/typography?id=d06f507\"}},\"elements\":[],\"widgetType\":\"text-editor\"}],\"isInner\":true,\"isLocked\":true},{\"id\":\"8566f20\",\"elType\":\"container\",\"settings\":{\"_title\":\"\\u9879\\u76ee #1\",\"content_width\":\"full\",\"background_background\":\"classic\",\"padding\":{\"unit\":\"px\",\"top\":\"0\",\"right\":\"0\",\"bottom\":\"0\",\"left\":\"0\",\"isLinked\":true},\"__globals__\":{\"background_color\":\"\"}},\"elements\":[{\"id\":\"d6f876c\",\"elType\":\"widget\",\"settings\":{\"editor\":\"<p>The choice between ONAN (Oil Natural Circulation and Air Natural Cooling) and ONAF (Oil Natural Circulation and Air Forced Cooling) cooling methods for Kete oil-immersed transformers is corely based on the matching between the transformer's heat dissipation requirements and actual heat dissipation conditions. Specifically, it can be comprehensively judged from the following 5 key dimensions:<\\\/p><p><strong>\\u2460<\\\/strong><strong>Transformer Rated Capacity and Heat Generation from Losses<\\\/strong><\\\/p><p>This is the most fundamental basis. The heat generated by a transformer mainly comes from copper losses (load losses) and iron losses (no-load losses). The larger the capacity, the higher the losses and the stronger the heat dissipation demand:<\\\/p><p><strong>\\u00b7<\\\/strong><strong>Small-capacity transformers (low loss):<\\\/strong><\\\/p><p>When the rated capacity is small (e.g., \\u2264500kVA for 10kV class, \\u22641000kVA for 35kV class), the heat generated by losses is small. Heat can be dissipated through the natural convection of transformer oil (hot oil rises, cold oil falls) and the natural convection between the casing\\\/radiator and air, without the need for additional cooling equipment. Therefore, ONAN is preferred.<\\\/p><p><strong>\\u00b7<\\\/strong><strong>Medium and large-capacity transformers (high loss):<\\\/strong><\\\/p><p>When the capacity exceeds the above range (e.g., \\u2265800kVA for 10kV class, \\u22651600kVA for 35kV class), losses increase significantly, and the natural heat dissipation rate cannot match the heat generation. This may cause the oil temperature to exceed national standard limits (usually top oil temperature rise \\u226455K or 60K). In such cases, fans must be used to force air flow and accelerate heat dissipation, so ONAF is chosen.<\\\/p><p>\\u2461<strong>Operating Load Characteristics<\\\/strong><\\\/p><p>The actual load rate and operation mode of the transformer directly affect heat dissipation requirements:<\\\/p><p><strong>\\u00b7<\\\/strong><strong>Low load rate or intermittent operation:<\\\/strong><\\\/p><p>If the transformer operates at light load for a long time (load rate &lt; 50%) or only runs during short-term peak periods (e.g., rural distribution transformers), even if its capacity is slightly larger, the actual heat generation is low. The natural heat dissipation capacity of ONAN can meet the demand, and there is no need to waste energy on fans. Thus, ONAN is selected.<\\\/p><p><strong>\\u00b7<\\\/strong><strong>High load rate or continuous full-load operation:<\\\/strong><\\\/p><p>For transformers in industrial parks, urban core distribution networks, and other equipment that operate at full load for a long time or have large load fluctuations (needing to cope with short-term overload), heat generation remains high. ONAN cannot meet the heat dissipation requirements, so ONAF's forced air cooling via fans is necessary. Even during overload, fans can enhance heat dissipation capacity (usually supporting 10%-20% short-term overload). Hence, ONAF is chosen.<\\\/p><p><strong>\\u2462<\\\/strong><strong>Installation Environment and Heat Dissipation Conditions<\\\/strong><\\\/p><p>Environmental factors directly affect the efficiency of natural heat dissipation, and cooling methods need to be adjusted according to scenarios:<\\\/p><p><strong>\\u00b7<\\\/strong><strong>Well-ventilated and low-temperature environments:<\\\/strong><\\\/p><p>If the transformer is installed in an open outdoor area, high-altitude regions (low air density but good ventilation), or cold areas, the efficiency of natural convection heat dissipation is high. Even if the capacity is close to the critical value, ONAN can be prioritized.<\\\/p><p><strong>\\u00b7<\\\/strong><strong>Poorly ventilated and high-temperature environments:<\\\/strong><\\\/p><p>If installed in enclosed distribution rooms, basements, tropical regions, or industrial environments with heavy dust\\\/oil pollution, natural heat dissipation is hindered. Even with a slightly smaller capacity, oil temperature may rise excessively due to poor heat dissipation conditions. In such cases, upgrading to ONAF is necessary to compensate for environmental defects through forced air flow by fans.<\\\/p><p>\\u2463<strong>Cost and Maintenance Requirements<\\\/strong><\\\/p><p>There are significant differences in initial costs and operation\\\/maintenance costs between the two cooling methods:<\\\/p><p><strong>\\u00b7<\\\/strong><strong>Advantages of ONAN:<\\\/strong><\\\/p><p>It has no fans or control circuits, resulting in a simpler structure. The initial procurement cost is low (5%-10% lower than ONAF of the same capacity), and there is no need for motor maintenance, making long-term operation and maintenance costs almost zero. It is suitable for scenarios sensitive to cost and with limited maintenance resources (e.g., rural power grids, small user transformers).<\\\/p><p><strong>\\u00b7<\\\/strong><strong>Disadvantages and necessity of ONAF:<\\\/strong><\\\/p><p>It requires additional configuration of fans, thermostats, and power circuits, leading to higher initial costs. Fan motors need regular inspection (dust cleaning, bearing lubrication), involving certain maintenance workload and energy consumption (fan power is usually tens to hundreds of watts). However, for medium and large-capacity transformers or those with insufficient heat dissipation conditions, these costs must be borne to ensure safe operation. Thus, ONAF is a \\\"necessary choice\\\" rather than a \\\"cost-priority choice.\\\"<\\\/p>\",\"_padding\":{\"unit\":\"px\",\"top\":\"20\",\"right\":\"0\",\"bottom\":\"0\",\"left\":\"0\",\"isLinked\":false},\"__globals__\":{\"typography_typography\":\"\"},\"typography_typography\":\"custom\",\"typography_font_family\":\"Arial\",\"typography_font_size\":{\"unit\":\"px\",\"size\":16,\"sizes\":[]},\"paragraph_spacing\":{\"unit\":\"px\",\"size\":20,\"sizes\":[]}},\"elements\":[],\"widgetType\":\"text-editor\"}],\"isInner\":true,\"isLocked\":true},{\"id\":\"3b6302b\",\"elType\":\"container\",\"settings\":{\"_title\":\"\\u9879\\u76ee #1\",\"content_width\":\"full\",\"background_background\":\"classic\",\"padding\":{\"unit\":\"px\",\"top\":\"0\",\"right\":\"0\",\"bottom\":\"0\",\"left\":\"0\",\"isLinked\":true},\"__globals__\":{\"background_color\":\"\"}},\"elements\":[{\"id\":\"4da9555\",\"elType\":\"widget\",\"settings\":{\"editor\":\"<p>According to international standards (such as IEC 60076), the design life of Kete oil-immersed transformers is usually calculated as 20 years. This is the expected service life under the ideal condition of \\\"normal operating conditions + regular maintenance\\\", which refers to the time it takes for core components (iron core, windings, insulating oil) to age to a critical state within the design parameters.<\\\/p><p>Practical industry reference range: In actual power grid or industrial applications, it is a dynamic indicator affected by multiple factors such as design standards, operating conditions, and maintenance levels. The service life of transformers can generally reach 20-40 years.<\\\/p>\",\"_padding\":{\"unit\":\"px\",\"top\":\"20\",\"right\":\"0\",\"bottom\":\"0\",\"left\":\"0\",\"isLinked\":false},\"__globals__\":{\"typography_typography\":\"globals\\\/typography?id=d06f507\"}},\"elements\":[],\"widgetType\":\"text-editor\"}],\"isInner\":true,\"isLocked\":true},{\"id\":\"d41fa9f\",\"elType\":\"container\",\"settings\":{\"_title\":\"\\u9879\\u76ee #1\",\"content_width\":\"full\",\"background_background\":\"classic\",\"padding\":{\"unit\":\"px\",\"top\":\"0\",\"right\":\"0\",\"bottom\":\"0\",\"left\":\"0\",\"isLinked\":true},\"__globals__\":{\"background_color\":\"\"}},\"elements\":[{\"id\":\"0fd938a\",\"elType\":\"widget\",\"settings\":{\"editor\":\"<p>The core limiting factor for Kete transformer lifespan is the aging rate of its insulation system (including winding insulation paper, insulating oil, and insulating components), which is determined by the following factors:<\\\/p><p><strong>\\u2460<\\\/strong><strong>Operating Temperature (the most critical factor)<\\\/strong><\\\/p><p>The aging rate of insulating materials, especially paper insulation, has an exponential relationship with temperature. According to the \\\"thermal aging law,\\\" the insulation lifespan is halved for every 6-8\\u2103 increase in temperature.<\\\/p><p>During normal operation, the maximum top oil temperature rise limit for oil-immersed transformers is typically 55K (ambient temperature + 55\\u2103). Long-term operation at excessive temperatures (e.g., top oil temperature exceeding 80\\u2103) accelerates the embrittlement of insulation paper and the cracking of insulating oil, significantly shortening the lifespan.<\\\/p><p>For example, if a transformer operating at full load or overload for a long time experiences cooling system failure leading to overheating, its lifespan may be reduced from 30 years to less than 15 years.<\\\/p><p><strong>\\u2461<\\\/strong><strong>Quality and Condition of Insulating Oil<\\\/strong><\\\/p><p>Insulating oil primarily functions for insulation and heat dissipation, and its performance degradation directly affects the lifespan of the insulation system.<\\\/p><p>Excessive moisture, increased acid value, accumulated impurities, or sludge formation in the oil reduce insulation strength and accelerate winding corrosion and aging.<\\\/p><p>Failure to regularly filter, regenerate, or replace the oil (it is generally recommended to test every 3-5 years and replace or regenerate every 10-15 years) will cause premature failure of the insulation system.<\\\/p><p><strong>\\u2462<\\\/strong><strong>Load Characteristics and Operating Conditions<\\\/strong><\\\/p><p>Long-term high load rates, frequent overloads, or short-circuit impacts cause winding overheating and increased mechanical stress, accelerating insulation fatigue:<\\\/p><p>Rural power grid or industrial transformers that frequently withstand short-term overloads (e.g., motor startup impacts) are prone to insulation aging in windings due to thermal cycles and mechanical vibrations.<\\\/p><p>Short-circuit faults (e.g., line short circuits causing transformers to bear huge short-circuit currents) may result in winding deformation and insulation damage. Even after repair, hidden dangers may remain, shortening the remaining lifespan.<\\\/p><p><strong>\\u2463<\\\/strong><strong>Environmental Conditions<\\\/strong><\\\/p><p>The installation environment directly affects the aging rate of insulation and components.<\\\/p><p>Humid, high-temperature, or highly polluted environments (with dust or chemically corrosive gases) accelerate insulation moisture absorption, oil degradation, and rusting of metal parts.<\\\/p><p>In high-altitude areas (where air is thin and heat dissipation is poor), insufficient heat dissipation may lead to overheating if the transformer is not specially designed.<\\\/p><p>Locations with strong vibrations (e.g., industrial workshops near pumps or fans) exacerbate winding loosening and insulation wear.<\\\/p><p><strong>\\u2464<\\\/strong><strong>Maintenance Level<\\\/strong><\\\/p><p>Lack of regular inspections (such as oil quality testing, insulation resistance testing, and partial discharge detection) prevents early faults from being identified, allowing minor issues to evolve into major defects.<\\\/p><p>Unrepaired faults in cooling systems (fans, oil pumps) reduce heat dissipation efficiency and cause temperature rise.<\\\/p><p>Neglected maintenance of accessories like bushings and tap changers may trigger local overheating or insulation breakdown, indirectly affecting the overall lifespan.<\\\/p>\",\"_padding\":{\"unit\":\"px\",\"top\":\"20\",\"right\":\"0\",\"bottom\":\"0\",\"left\":\"0\",\"isLinked\":false},\"__globals__\":{\"typography_typography\":\"globals\\\/typography?id=d06f507\"}},\"elements\":[],\"widgetType\":\"text-editor\"}],\"isInner\":true,\"isLocked\":true},{\"id\":\"09a50ce\",\"elType\":\"container\",\"settings\":{\"_title\":\"\\u9879\\u76ee #1\",\"content_width\":\"full\",\"background_background\":\"classic\",\"padding\":{\"unit\":\"px\",\"top\":\"0\",\"right\":\"0\",\"bottom\":\"0\",\"left\":\"0\",\"isLinked\":true},\"__globals__\":{\"background_color\":\"\"}},\"elements\":[{\"id\":\"f9d6bbd\",\"elType\":\"widget\",\"settings\":{\"editor\":\"<p>The service life of Kete oil-immersed transformers is influenced by multiple factors such as operating environment, maintenance quality, and load conditions. Scientific maintenance can effectively delay equipment aging and maximize service life (usually designed for 20-30 years, but can exceed 40 years with proper maintenance). Daily inspections, maintenance of core components, environmental control, test detection, and fault prevention all impact their service life.<\\\/p><p><strong>\\u2460<\\\/strong><strong>Daily Inspection and Basic Maintenance<\\\/strong><\\\/p><p>Daily inspection is crucial for timely detection of hidden dangers, and a standardized inspection system must be established.<\\\/p><p><strong>\\u00b7<\\\/strong><strong>Appearance and Operating Status Inspection<\\\/strong><strong>:<\\\/strong> Oil Level and Oil Color, oil Leakage Inspection, temperature Monitoring, sound and Vibration<\\\/p><p><strong>\\u00b7<\\\/strong><strong>Accessory Status Inspection<\\\/strong><strong>:<\\\/strong> Bushings, cooling System, protection Devices<\\\/p><p><strong>\\u2461<\\\/strong><strong>Maintenance and Management of Transformer Oil<\\\/strong><\\\/p><p>Transformer oil is the core medium for insulation and heat dissipation, and its quality directly affects equipment life.<\\\/p><p><strong>\\u00b7<\\\/strong><strong>Oil Quality Testing and Treatment<\\\/strong><strong>:<\\\/strong> Regular Testing, In-Service Oil, dehydration and Degassing, pollution Prevention<\\\/p><p><strong>\\u00b7<\\\/strong><strong>Oil Level and Replenishment Management<\\\/strong><\\\/p><p><strong>\\u2462<\\\/strong><strong>Specialized Maintenance of Core Components<\\\/strong><\\\/p><p><strong>\\u00b7<\\\/strong><strong>Iron Core and Winding Maintenance<\\\/strong><strong>:<\\\/strong> Iron Core Grounding Inspection, winding Insulation Inspection<\\\/p><p><strong>\\u00b7<\\\/strong><strong>Tap Changer Maintenance<\\\/strong><strong>:<\\\/strong> Regular operation and cleaning of tap changer, DC Resistance Testing, oil Chamber Seal Inspection<\\\/p><p><strong>\\u2463<\\\/strong><strong>Environmental and Operating Condition Control<\\\/strong><strong>: <\\\/strong><\\\/p><p><strong>\\u00b7<\\\/strong><strong>Operating Environment Optimization<\\\/strong><strong>:<\\\/strong> Dust and Moisture Prevention, load Control<\\\/p><p><strong>\\u00b7<\\\/strong><strong>Regular Maintenance and Testing<\\\/strong><strong>:<\\\/strong> Minor Maintenance (Annually), major Maintenance (Every 5-10 Years), electrical Testing<\\\/p><p><strong>\\u2464<\\\/strong><strong>Fault Prevention and Emergency Handling<\\\/strong><strong>: <\\\/strong>Establish Maintenance Records, emergency Measures<\\\/p><p>The service life maintenance of Kete oil-immersed transformers should adhere to the principle of \\\"prevention first, full-process monitoring.\\\" By timely detecting abnormalities through daily inspections, ensuring insulation and heat dissipation via oil quality management, conducting regular maintenance of core components, and scientifically controlling the environment and load, insulation aging and component wear can be effectively delayed, maximizing equipment service life. Additionally, integrating intelligent monitoring technologies (e.g., online oil quality monitoring, temperature rise sensors) can further improve maintenance efficiency and accuracy.<\\\/p>\",\"_padding\":{\"unit\":\"px\",\"top\":\"20\",\"right\":\"0\",\"bottom\":\"0\",\"left\":\"0\",\"isLinked\":false},\"__globals__\":{\"typography_typography\":\"\"},\"typography_typography\":\"custom\",\"typography_font_family\":\"Arial\",\"typography_font_size\":{\"unit\":\"px\",\"size\":16,\"sizes\":[]},\"typography_line_height\":{\"unit\":\"px\",\"size\":20,\"sizes\":[]},\"paragraph_spacing\":{\"unit\":\"px\",\"size\":20,\"sizes\":[]}},\"elements\":[],\"widgetType\":\"text-editor\"}],\"isInner\":true,\"isLocked\":true},{\"id\":\"a831a3e\",\"elType\":\"container\",\"settings\":{\"_title\":\"\\u9879\\u76ee #1\",\"content_width\":\"full\",\"background_background\":\"classic\",\"padding\":{\"unit\":\"px\",\"top\":\"0\",\"right\":\"0\",\"bottom\":\"0\",\"left\":\"0\",\"isLinked\":true},\"__globals__\":{\"background_color\":\"\"}},\"elements\":[{\"id\":\"72df141\",\"elType\":\"widget\",\"settings\":{\"editor\":\"<p>Mineral insulating oil in Kete oil-immersed transformers plays multiple crucial roles in ensuring the safe and stable operation of transformers.<\\\/p><p><strong>\\u2460<\\\/strong><strong>Excellent Insulating Performance for Electrical Safety<\\\/strong><\\\/p><p><strong>\\u00b7<\\\/strong><strong>High Breakdown Strength:<\\\/strong> The breakdown voltage of mineral insulating oil is typically above 30kV (high-quality products can reach over 50kV), far exceeding that of air (approximately 3kV\\\/mm). This effectively isolates conductors at different potentials and prevents short-circuit faults caused by insulation breakdown.<\\\/p><p><strong>\\u00b7<\\\/strong><strong>Low Dielectric Loss and High Volume Resistivity:<\\\/strong> It has a small dielectric loss factor (tan\\u03b4), resulting in low energy loss under electric fields and reduced heat generation. Meanwhile, its high volume resistivity (usually &gt;10\\u00b9\\u2074\\u03a9\\u30fbcm) minimizes leakage current, further enhancing insulation reliability.<\\\/p><p><strong>\\u00b7<\\\/strong><strong>Filling Insulation Gaps:<\\\/strong> Solid insulating materials such as insulating paper and cardboard inside transformers have tiny pores. Mineral insulating oil can penetrate these pores, fill air gaps, avoid partial discharge caused by air ionization, and improve the overall dielectric strength of the insulation system.<\\\/p><p><strong>\\u2461<\\\/strong><strong>Efficient Heat Dissipation to Maintain Stable Equipment Temperature Rise<\\\/strong><\\\/p><p><strong>\\u00b7<\\\/strong><strong>Good Thermal Conductivity:<\\\/strong> Its thermal conductivity is approximately 0.12-0.15 W\\\/(m\\u30fbK), much higher than that of air (about 0.026 W\\\/(m\\u30fbK)), enabling it to quickly absorb heat generated by windings and iron cores.<\\\/p><p><strong>\\u00b7<\\\/strong><strong>Convection Circulation Cooling:<\\\/strong> Heated insulating oil reduces in density, naturally rises to the radiator at the top of the transformer, exchanges heat with air through the radiator, cools down, and sinks, forming a circulation to continuously conduct heat out of the equipment.<\\\/p><p><strong>\\u00b7<\\\/strong><strong>Synergy with Cooling Systems:<\\\/strong> In large transformers, mineral insulating oil can work with forced oil circulation cooling systems (such as oil pumps and cooling fans) to further enhance heat dissipation efficiency, meeting the needs of high-load operation.<\\\/p><p><strong>\\u2462<\\\/strong><strong>Strong Chemical Stability to Extend Equipment Lifespan<\\\/strong><\\\/p><p><strong>\\u00b7<\\\/strong><strong>Excellent Oxidation Resistance:<\\\/strong> Refined mineral insulating oil (e.g., derived from naphthenic or paraffinic crude oil) contains few impurities such as sulfur and nitrogen. It is not easily oxidized at high temperatures to form acids, colloids, or sludge, reducing corrosion and blockage of insulating materials.<\\\/p><p><strong>\\u00b7<\\\/strong><strong>Low Volatility:<\\\/strong> It has a high boiling point and low volatility, so it is not prone to oil reduction or performance degradation due to volatilization during long-term operation, reducing maintenance frequency.<\\\/p><p><strong>\\u00b7<\\\/strong><strong>Good Compatibility with Solid Insulation:<\\\/strong> It is well compatible with materials commonly used in transformers, such as cellulose paper and insulating cardboard, without chemical reactions that cause material aging, jointly maintaining the stability of the insulation system.<\\\/p><p><strong>\\u2463<\\\/strong><strong>Arc Quenching and Protection to Enhance Operational Safety<\\\/strong><\\\/p><p><strong>\\u00b7<\\\/strong><strong>Arc Quenching Function:<\\\/strong> When an arc is generated, the oil decomposes into gases such as hydrogen and methane, which can absorb arc energy. At the same time, the flow of oil can cool the arc area, quickly extinguishing the arc and preventing fault expansion.<\\\/p><p><strong>\\u00b7<\\\/strong><strong>Isolating Air and Moisture:<\\\/strong> The oil layer covers the surface of internal components, isolating oxygen and moisture in the air, avoiding moisture-induced rust of metal components such as iron cores and windings, and reducing the risk of insulation deterioration.<\\\/p><p><strong>\\u00b7<\\\/strong><strong>Fault Diagnosis Carrier:<\\\/strong> Insulating oil generates characteristic gases (such as acetylene and hydrogen) during faults. Through Dissolved Gas Analysis (DGA) technology, potential faults can be detected in advance, providing a basis for equipment condition assessment and maintenance.<\\\/p><p><strong>\\u2464<\\\/strong><strong>Advantages in Economy and Practicality<\\\/strong><\\\/p><p><strong>\\u00b7<\\\/strong><strong>Controllable Cost:<\\\/strong> Mineral insulating oil has wide raw material sources (based on petroleum refining), mature production processes, and relatively low prices, making it suitable for large-scale applications in various transformers (from distribution transformers to ultra-high voltage transformers).<\\\/p><p><strong>\\u00b7<\\\/strong><strong>Convenient Maintenance: <\\\/strong>During normal operation, only regular monitoring of oil quality (such as moisture, dielectric loss, and breakdown voltage) is required. If necessary, filtration and regeneration treatments can restore its performance, with maintenance costs lower than some synthetic insulating oils.<\\\/p><p><strong>\\u00b7<\\\/strong><strong>Strong Adaptability:<\\\/strong> It can maintain stable performance over a wide temperature range (e.g., good fluidity at low temperatures and resistance to deterioration at high temperatures), adapting to the operational needs of different climate regions.<\\\/p><p>Mineral insulating oil provides comprehensive operational protection for transformers through its four core roles: insulation, heat dissipation, chemical stability, and arc quenching protection. It is an indispensable key material in power systems. Its performance is directly related to the lifespan, efficiency, and safety of transformers, so it still dominates the power industry (although synthetic insulating oils are increasingly used in specific scenarios, mineral oil remains one of the most cost-effective choices).<\\\/p>\",\"_padding\":{\"unit\":\"px\",\"top\":\"20\",\"right\":\"0\",\"bottom\":\"0\",\"left\":\"0\",\"isLinked\":false},\"__globals__\":{\"typography_typography\":\"\"},\"typography_typography\":\"custom\",\"typography_font_family\":\"Arial\",\"typography_font_size\":{\"unit\":\"px\",\"size\":16,\"sizes\":[]},\"typography_line_height\":{\"unit\":\"px\",\"size\":20,\"sizes\":[]},\"paragraph_spacing\":{\"unit\":\"px\",\"size\":20,\"sizes\":[]}},\"elements\":[],\"widgetType\":\"text-editor\"}],\"isInner\":true,\"isLocked\":true},{\"id\":\"5fb1d72\",\"elType\":\"container\",\"settings\":{\"_title\":\"\\u9879\\u76ee #1\",\"content_width\":\"full\",\"background_background\":\"classic\",\"padding\":{\"unit\":\"px\",\"top\":\"0\",\"right\":\"0\",\"bottom\":\"0\",\"left\":\"0\",\"isLinked\":true},\"__globals__\":{\"background_color\":\"\"}},\"elements\":[{\"id\":\"9f1b9a3\",\"elType\":\"widget\",\"settings\":{\"editor\":\"<p>Kete oil-immersed transformers typically adopt multi-level protection measures, covering internal self-protection design, external monitoring devices, and relay protection systems.<\\\/p><p><strong>\\u2460<\\\/strong><strong>Protection Measures Against \\\"Overload\\\"<\\\/strong><\\\/p><p>Overload refers to the situation where the transformer\\u2019s load current exceeds the rated value for a long or short period, which may cause winding overheating and accelerated insulation aging. The main protection measures include:<\\\/p><p><strong>\\u00b7<\\\/strong><strong>Overload Protection (Relay Protection System)<\\\/strong><\\\/p><p>Principle: Load current of the transformer is monitored by current transformers. When the current exceeds a certain multiple of the rated value (e.g., 1.2~1.5 times) and lasts for a set threshold, the protection action is triggered.<\\\/p><p><strong>\\u00b7<\\\/strong><strong>Internal Thermal Protection Design<\\\/strong><strong>: <\\\/strong>Including winding Conductor Selection and heat Dissipation Structure Optimization: Natural heat dissipation capacity is enhanced by increasing the oil tank volume and optimizing the layout of cooling fins, mitigating temperature rise during overload.<\\\/p><p><strong>\\u2461<\\\/strong><strong>Protection Measures Against \\\"Overheating\\\"<\\\/strong><\\\/p><p>Overheating may be caused by overload, excessive core loss, or cooling system failures, requiring real-time monitoring and rapid response:<\\\/p><p><strong>\\u00b7<\\\/strong><strong>Temperature Monitoring Devices<\\\/strong><\\\/p><p>Oil Temperature Thermometer: Directly measures the upper oil temperature in the tank. An alarm is issued when the oil temperature exceeds 85\\u00b0C (typical set value).<\\\/p><p>Winding Thermometer: Simulates the winding hot-spot temperature (combining oil temperature and load current). Protection is triggered when the hot-spot temperature exceeds 105\\u00b0C.<\\\/p><p>Optical Fiber Temperature Measurement: In large transformers, optical fiber sensors are used to directly measure hot-spot temperatures of windings or cores, offering higher accuracy and faster response.<\\\/p><p><strong>\\u00b7<\\\/strong><strong>Cooling System Protection<\\\/strong><\\\/p><p>Forced Cooling Assistance: Larger-capacity transformers are equipped with forced oil circulation air cooling (OFAF) or water cooling systems. These systems automatically start when oil temperature rises to enhance heat dissipation; if the cooling system fails (e.g., fan stops), an alarm is triggered or the load is reduced.<\\\/p><p>Buchholz Relay: Light gas action may occur when high oil temperature causes oil decomposition and generates a small amount of gas, issuing an alarm to prompt inspection of overheating causes.<\\\/p><p><strong>\\u00b7<\\\/strong><strong>Over-Temperature Trip Protection<\\\/strong><\\\/p><p>When the temperature continues to rise to a dangerous level (e.g., oil temperature exceeds 95\\u00b0C or winding hot-spot temperature exceeds 120\\u00b0C), the protection system directly cuts off the transformer power supply to prevent insulation breakdown.<\\\/p><p><strong>\\u2462<\\\/strong><strong>Protection Measures Against \\\"Short Circuit\\\"<\\\/strong><\\\/p><p>Short circuits (including internal winding short circuits and external outlet short circuits) generate massive currents that may instantly damage the transformer, requiring rapid fault isolation:<\\\/p><p><strong>\\u00b7<\\\/strong><strong>Differential Protection (Main Protection)<\\\/strong><\\\/p><p>Principle: Based on the principle that \\\"current flowing into the transformer equals current flowing out,\\\" current difference is measured by current transformers on both sides. An internal short circuit is determined when the differential current exceeds the set value.<\\\/p><p>Features: It acts rapidly (usually within tens of milliseconds) and can effectively distinguish between internal short circuits and external faults, serving as the core of transformer short-circuit protection.<\\\/p><p><strong>\\u00b7<\\\/strong><strong>Buchholz Protection (Exclusive to Internal Short Circuits)<\\\/strong><\\\/p><p>Heavy Gas Action: When an internal winding short circuit occurs, high temperatures from the short-circuit current cause intense oil decomposition, generating a large amount of gas. This pushes the Buchholz relay to act, triggering an instantaneous trip to cut off the power supply and prevent fault expansion.<\\\/p><p>Application Scenario: Particularly suitable for internal faults such as inter-turn or inter-layer winding short circuits, serving as an important supplement to differential protection.<\\\/p><p><strong>\\u00b7<\\\/strong><strong>Overcurrent Protection (Backup Protection)<\\\/strong><\\\/p><p>External Short Circuit Protection: When an external short circuit occurs (e.g., outlet short circuit), overcurrent protection detects the overcurrent and trips with a delay (the delay must avoid the impact duration of the short-circuit current), preventing the transformer from enduring long-term short-circuit currents.<\\\/p><p>Instantaneous Overcurrent Protection: For close-range external short circuits, instantaneous overcurrent protection can trip without delay to quickly isolate the fault.<\\\/p><p><strong>\\u00b7<\\\/strong><strong>Current Limiting Measures<\\\/strong><\\\/p><p>Short-Circuit Impedance Design: Windings are designed with a specific short-circuit impedance to limit the amplitude of short-circuit currents, reducing mechanical stress on windings and cores caused by short-circuit impacts.<\\\/p><p>Winding Mechanical Reinforcement: A robust winding structure (e.g., reinforced insulation binding, support strip fixation) is adopted to enhance mechanical strength against short-circuit impacts.<\\\/p><p><strong>\\u2463<\\\/strong><strong>Comprehensive Protection and Auxiliary Measures<\\\/strong><\\\/p><p><strong>\\u00b7<\\\/strong><strong>Grounding Protection:<\\\/strong> The transformer neutral point is grounded or grounded via an arc suppression coil. In case of a single-phase ground short circuit, zero-sequence current protection detects the fault and trips to prevent overvoltage damage to equipment.<\\\/p><p><strong>\\u00b7<\\\/strong><strong>Backup Protection Coordination:<\\\/strong> Overload protection, overcurrent protection, etc., act as backups to provide safeguards when main protection fails, forming a multi-layered defense of \\\"main protection + backup protection.\\\"<\\\/p><p><strong>\\u00b7<\\\/strong><strong>Online Monitoring System:<\\\/strong> Intelligent transformers are equipped with condition monitoring devices that collect real-time data on oil temperature, oil level, gas composition, partial discharge, etc. Potential faults are predicted through data analysis, enabling early warning of short-circuit or overheating risks.<\\\/p>\",\"_padding\":{\"unit\":\"px\",\"top\":\"20\",\"right\":\"0\",\"bottom\":\"0\",\"left\":\"0\",\"isLinked\":false},\"__globals__\":{\"typography_typography\":\"\"},\"typography_typography\":\"custom\",\"typography_font_family\":\"Arial\",\"typography_font_size\":{\"unit\":\"px\",\"size\":16,\"sizes\":[]},\"typography_line_height\":{\"unit\":\"px\",\"size\":20,\"sizes\":[]},\"paragraph_spacing\":{\"unit\":\"px\",\"size\":20,\"sizes\":[]}},\"elements\":[],\"widgetType\":\"text-editor\"}],\"isInner\":true,\"isLocked\":true},{\"id\":\"8387c87\",\"elType\":\"container\",\"settings\":{\"_title\":\"\\u9879\\u76ee #1\",\"content_width\":\"full\",\"background_background\":\"classic\",\"padding\":{\"unit\":\"px\",\"top\":\"0\",\"right\":\"0\",\"bottom\":\"0\",\"left\":\"0\",\"isLinked\":true},\"__globals__\":{\"background_color\":\"\"}},\"elements\":[{\"id\":\"8e6122e\",\"elType\":\"widget\",\"settings\":{\"editor\":\"<p>Kete oil-immersed transformers can be customized in multiple aspects to meet the specific needs of different customers.<\\\/p><p><strong>\\u2460<\\\/strong><strong>Rated Power and Transformation Ratio:<\\\/strong> According to the customer's power consumption requirements, the rated power and transformation ratio of the transformer can be adjusted to ensure the output of appropriate voltage and meet the needs of different loads.<\\\/p><p><strong>\\u2461<\\\/strong><strong>Overall Dimensions:<\\\/strong> If the customer's installation space is limited, manufacturers can customize transformers with special dimensions based on actual conditions to enable them to better adapt to the installation environment.<\\\/p><p><strong>\\u2462<\\\/strong><strong>Accessories and Wiring Methods:<\\\/strong> Corresponding accessories such as junction boxes, temperature probes, and gas relays can be provided according to customer requirements, and reasonable wiring methods can be designed to facilitate customers' installation and use.<\\\/p><p><strong>\\u2463<\\\/strong><strong>Winding Material:<\\\/strong> Some oil-immersed transformers offer two winding materials, full copper and full aluminum, for users to choose from. Full-copper transformers have good electrical conductivity and thermal conductivity, which can reduce resistance and temperature rise; full-aluminum transformers, on the other hand, are lighter in weight and have excellent corrosion resistance.<\\\/p><p><strong>\\u2464<\\\/strong><strong>Insulation Material:<\\\/strong> High-temperature-resistant insulation materials can be selected to meet the insulation performance requirements under special environments or operating conditions, thereby improving the reliability and service life of the transformer.<\\\/p><p><strong>\\u2465<\\\/strong><strong>Protection Level:<\\\/strong> For some special application environments, such as high-temperature, high-humidity, polluted areas, or offshore platforms, the protection level of the transformer can be improved through special design to make it adapt to harsh operating environments.<\\\/p><p><strong>\\u2466<\\\/strong><strong>Heat Dissipation Method:<\\\/strong> According to the capacity and usage environment of the transformer, the heat dissipation design can be optimized. For example, special oil channel design, increasing the number of cooling fins, or adopting forced air cooling can be used to improve heat dissipation efficiency and reduce the temperature rise of the transformer.<\\\/p><p><strong>\\u2467<\\\/strong><strong>Winding Structure:<\\\/strong> For instance, for low-voltage and high-current windings, copper foil winding can be adopted. On one hand, it reduces the transverse leakage flux of the winding to decrease eddy current loss; on the other hand, it improves the transformer's ability to withstand sudden short circuits.<\\\/p>\",\"_padding\":{\"unit\":\"px\",\"top\":\"20\",\"right\":\"0\",\"bottom\":\"0\",\"left\":\"0\",\"isLinked\":false},\"__globals__\":{\"typography_typography\":\"\"},\"typography_typography\":\"custom\",\"typography_font_family\":\"Arial\",\"typography_font_size\":{\"unit\":\"px\",\"size\":16,\"sizes\":[]},\"typography_line_height\":{\"unit\":\"px\",\"size\":20,\"sizes\":[]},\"paragraph_spacing\":{\"unit\":\"px\",\"size\":20,\"sizes\":[]}},\"elements\":[],\"widgetType\":\"text-editor\"}],\"isInner\":true,\"isLocked\":true}]},{\"id\":\"0ff856d\",\"elType\":\"widget\",\"settings\":{\"editor\":\"<p><strong>\\u2161.<\\\/strong><strong>After-sales maintenance<\\\/strong><\\\/p>\",\"typography_typography\":\"custom\",\"typography_font_family\":\"Arial\",\"typography_font_size\":{\"unit\":\"px\",\"size\":16,\"sizes\":[]},\"typography_line_height\":{\"unit\":\"px\",\"size\":20,\"sizes\":[]},\"paragraph_spacing\":{\"unit\":\"px\",\"size\":10,\"sizes\":[]},\"_padding\":{\"unit\":\"px\",\"top\":\"020\",\"right\":\"0\",\"bottom\":\"0\",\"left\":\"0\",\"isLinked\":false},\"_element_width\":\"initial\",\"_element_custom_width\":{\"unit\":\"%\",\"size\":65,\"sizes\":[]},\"__globals__\":{\"typography_typography\":\"\",\"text_color\":\"globals\\\/colors?id=7268ef8\"}},\"elements\":[],\"widgetType\":\"text-editor\"},{\"id\":\"35cf19d\",\"elType\":\"widget\",\"widgetType\":\"nested-accordion\",\"settings\":{\"items\":[{\"item_title\":\"1.What is included in Kete's warranty coverage during the warranty period? And how are the costs borne?\",\"_id\":\"1d2b564\"},{\"item_title\":\"2.Will Kete provide guidance documents for installation?\",\"_id\":\"6187cb3\"},{\"item_title\":\"3.If maintenance is required and spare parts are purchased from Kete, how long will it take for the spare parts to arrive?\",\"_id\":\"9244a66\"},{\"item_title\":\"4.How to handle emergency maintenance requests, and what is the typical response time?\",\"_id\":\"b474fe0\"},{\"item_title\":\"5.What kind of after-sales support can Kete provide, including troubleshooting and maintenance services?\",\"_id\":\"bab7d20\"},{\"item_title\":\"6.Can Kete provide options for service contracts or extended warranty periods?\",\"_id\":\"a2a227a\"}],\"accordion_item_title_icon\":{\"value\":\"fas fa-angle-right\",\"library\":\"fa-solid\"},\"accordion_item_title_icon_active\":{\"value\":\"fas fa-angle-down\",\"library\":\"fa-solid\"},\"default_state\":\"all_collapsed\",\"max_items_expended\":\"multiple\",\"accordion_item_title_space_between\":{\"unit\":\"px\",\"size\":10,\"sizes\":[]},\"accordion_background_normal_background\":\"classic\",\"accordion_background_normal_color\":\"#F2F2F2\",\"accordion_background_hover_background\":\"classic\",\"accordion_background_hover_color\":\"#0055AA\",\"accordion_background_active_background\":\"classic\",\"accordion_background_active_color\":\"#0055AA\",\"title_typography_typography\":\"custom\",\"title_typography_font_family\":\"Arial\",\"title_typography_font_size\":{\"unit\":\"px\",\"size\":14,\"sizes\":[]},\"title_typography_font_weight\":\"600\",\"hover_title_color\":\"#FFFFFF\",\"active_title_color\":\"#FFFFFF\",\"_padding\":{\"unit\":\"px\",\"top\":\"20\",\"right\":\"0\",\"bottom\":\"0\",\"left\":\"0\",\"isLinked\":false},\"__globals__\":{\"title_typography_typography\":\"\",\"accordion_background_hover_color\":\"globals\\\/colors?id=primary\",\"hover_title_color\":\"\",\"active_title_color\":\"\",\"accordion_background_active_color\":\"globals\\\/colors?id=primary\",\"accordion_background_normal_color\":\"globals\\\/colors?id=556a01c\"}},\"elements\":[{\"id\":\"8db37d5\",\"elType\":\"container\",\"settings\":{\"_title\":\"\\u9879\\u76ee #1\",\"content_width\":\"full\",\"background_background\":\"classic\",\"padding\":{\"unit\":\"px\",\"top\":\"0\",\"right\":\"0\",\"bottom\":\"0\",\"left\":\"0\",\"isLinked\":true},\"__globals__\":{\"background_color\":\"\"}},\"elements\":[{\"id\":\"87480e7\",\"elType\":\"widget\",\"settings\":{\"editor\":\"<p>Our company's warranty coverage includes performance failures caused by material defects or manufacturing process issues, such as cabinet water leakage, insulation failure, abnormal switch operation, etc.<\\\/p><p>We provide spare parts for maintenance free of charge, and will dispatch technical personnel for on-site inspection and repair if necessary, with travel expenses borne by the supplier.<\\\/p>\",\"_padding\":{\"unit\":\"px\",\"top\":\"20\",\"right\":\"0\",\"bottom\":\"0\",\"left\":\"0\",\"isLinked\":false},\"__globals__\":{\"typography_typography\":\"globals\\\/typography?id=d06f507\"}},\"elements\":[],\"widgetType\":\"text-editor\"}],\"isInner\":true,\"isLocked\":true},{\"id\":\"f40cd7f\",\"elType\":\"container\",\"settings\":{\"_title\":\"\\u9879\\u76ee #1\",\"content_width\":\"full\",\"background_background\":\"classic\",\"padding\":{\"unit\":\"px\",\"top\":\"0\",\"right\":\"0\",\"bottom\":\"0\",\"left\":\"0\",\"isLinked\":true},\"__globals__\":{\"background_color\":\"\"}},\"elements\":[{\"id\":\"2f33eab\",\"elType\":\"widget\",\"settings\":{\"editor\":\"<p>For large transformers that require the removal of some accessories to fit into containers, we will provide an installation video and an electronic version of the installation instructions.<\\\/p>\",\"_padding\":{\"unit\":\"px\",\"top\":\"20\",\"right\":\"0\",\"bottom\":\"0\",\"left\":\"0\",\"isLinked\":false},\"__globals__\":{\"typography_typography\":\"globals\\\/typography?id=d06f507\"}},\"elements\":[],\"widgetType\":\"text-editor\"}],\"isInner\":true,\"isLocked\":true},{\"id\":\"a349b2f\",\"elType\":\"container\",\"settings\":{\"_title\":\"\\u9879\\u76ee #1\",\"content_width\":\"full\",\"background_background\":\"classic\",\"padding\":{\"unit\":\"px\",\"top\":\"0\",\"right\":\"0\",\"bottom\":\"0\",\"left\":\"0\",\"isLinked\":true},\"__globals__\":{\"background_color\":\"\"}},\"elements\":[{\"id\":\"7480d7f\",\"elType\":\"widget\",\"settings\":{\"editor\":\"<p>If the customer needs to purchase spare parts from our company, the goods can generally be shipped within 2-7 days.<\\\/p>\",\"_padding\":{\"unit\":\"px\",\"top\":\"20\",\"right\":\"0\",\"bottom\":\"0\",\"left\":\"0\",\"isLinked\":false},\"__globals__\":{\"typography_typography\":\"globals\\\/typography?id=d06f507\"}},\"elements\":[],\"widgetType\":\"text-editor\"}],\"isInner\":true,\"isLocked\":true},{\"id\":\"05bb81a\",\"elType\":\"container\",\"settings\":{\"_title\":\"\\u9879\\u76ee #1\",\"content_width\":\"full\",\"background_background\":\"classic\",\"padding\":{\"unit\":\"px\",\"top\":\"0\",\"right\":\"0\",\"bottom\":\"0\",\"left\":\"0\",\"isLinked\":true},\"__globals__\":{\"background_color\":\"\"}},\"elements\":[{\"id\":\"4e882a7\",\"elType\":\"widget\",\"settings\":{\"editor\":\"<p>24\\\/7 technical support hotline, ensuring a fault time of \\u2264 2 hours.<\\\/p>\",\"_padding\":{\"unit\":\"px\",\"top\":\"20\",\"right\":\"0\",\"bottom\":\"0\",\"left\":\"0\",\"isLinked\":false},\"__globals__\":{\"typography_typography\":\"\"},\"typography_typography\":\"custom\",\"typography_font_family\":\"Arial\",\"typography_font_size\":{\"unit\":\"px\",\"size\":16,\"sizes\":[]},\"paragraph_spacing\":{\"unit\":\"px\",\"size\":20,\"sizes\":[]}},\"elements\":[],\"widgetType\":\"text-editor\"}],\"isInner\":true,\"isLocked\":true},{\"id\":\"0d9ad48\",\"elType\":\"container\",\"settings\":{\"_title\":\"\\u9879\\u76ee #1\",\"content_width\":\"full\",\"background_background\":\"classic\",\"padding\":{\"unit\":\"px\",\"top\":\"0\",\"right\":\"0\",\"bottom\":\"0\",\"left\":\"0\",\"isLinked\":true},\"__globals__\":{\"background_color\":\"\"}},\"elements\":[{\"id\":\"8572058\",\"elType\":\"widget\",\"settings\":{\"editor\":\"<p>During the warranty period, regular return visits (once every 3 months) will be conducted to provide operation status testing and maintenance recommendations.<\\\/p><p>After the warranty period expires, lifelong maintenance services at cost price and spare parts supply can be provided.<\\\/p>\",\"_padding\":{\"unit\":\"px\",\"top\":\"20\",\"right\":\"0\",\"bottom\":\"0\",\"left\":\"0\",\"isLinked\":false},\"__globals__\":{\"typography_typography\":\"globals\\\/typography?id=d06f507\"}},\"elements\":[],\"widgetType\":\"text-editor\"}],\"isInner\":true,\"isLocked\":true},{\"id\":\"fee700e\",\"elType\":\"container\",\"settings\":{\"_title\":\"\\u9879\\u76ee #1\",\"content_width\":\"full\",\"background_background\":\"classic\",\"padding\":{\"unit\":\"px\",\"top\":\"0\",\"right\":\"0\",\"bottom\":\"0\",\"left\":\"0\",\"isLinked\":true},\"__globals__\":{\"background_color\":\"\"}},\"elements\":[{\"id\":\"26f8b2b\",\"elType\":\"widget\",\"settings\":{\"editor\":\"<p>Yes, we can. Generally, the warranty period for our products is one year. If an extension of the warranty period is required, we will increase the price by a certain profit margin based on the existing price accordingly.<\\\/p>\",\"_padding\":{\"unit\":\"px\",\"top\":\"20\",\"right\":\"0\",\"bottom\":\"0\",\"left\":\"0\",\"isLinked\":false},\"__globals__\":{\"typography_typography\":\"globals\\\/typography?id=d06f507\"}},\"elements\":[],\"widgetType\":\"text-editor\"}],\"isInner\":true,\"isLocked\":true}]},{\"id\":\"685f6bb\",\"elType\":\"widget\",\"settings\":{\"editor\":\"<p><strong>\\u2162.<\\\/strong><strong>Delivery and Payment<\\\/strong><\\\/p>\",\"typography_typography\":\"custom\",\"typography_font_family\":\"Arial\",\"typography_font_size\":{\"unit\":\"px\",\"size\":16,\"sizes\":[]},\"typography_line_height\":{\"unit\":\"px\",\"size\":20,\"sizes\":[]},\"paragraph_spacing\":{\"unit\":\"px\",\"size\":10,\"sizes\":[]},\"_padding\":{\"unit\":\"px\",\"top\":\"020\",\"right\":\"0\",\"bottom\":\"0\",\"left\":\"0\",\"isLinked\":false},\"_element_width\":\"initial\",\"_element_custom_width\":{\"unit\":\"%\",\"size\":65,\"sizes\":[]},\"__globals__\":{\"typography_typography\":\"\",\"text_color\":\"globals\\\/colors?id=7268ef8\"}},\"elements\":[],\"widgetType\":\"text-editor\"},{\"id\":\"400c4e4\",\"elType\":\"widget\",\"widgetType\":\"nested-accordion\",\"settings\":{\"items\":[{\"item_title\":\"1.What is the manufacturing and delivery lead time for Kete oil-immersed transformers?\",\"_id\":\"1d2b564\"},{\"item_title\":\"2.What is the packaging for Kete oil-immersed transformers?\",\"_id\":\"6187cb3\"},{\"item_title\":\"3.What are the payment terms for Kete transformers?\",\"_id\":\"9244a66\"},{\"item_title\":\"4.What are the delivery terms for the bulk shipment of Kete transformers?\",\"_id\":\"b474fe0\"}],\"accordion_item_title_icon\":{\"value\":\"fas fa-angle-right\",\"library\":\"fa-solid\"},\"accordion_item_title_icon_active\":{\"value\":\"fas fa-angle-down\",\"library\":\"fa-solid\"},\"default_state\":\"all_collapsed\",\"max_items_expended\":\"multiple\",\"accordion_item_title_space_between\":{\"unit\":\"px\",\"size\":10,\"sizes\":[]},\"accordion_background_normal_background\":\"classic\",\"accordion_background_normal_color\":\"#F2F2F2\",\"accordion_background_hover_background\":\"classic\",\"accordion_background_hover_color\":\"#0055AA\",\"accordion_background_active_background\":\"classic\",\"accordion_background_active_color\":\"#0055AA\",\"title_typography_typography\":\"custom\",\"title_typography_font_family\":\"Arial\",\"title_typography_font_size\":{\"unit\":\"px\",\"size\":14,\"sizes\":[]},\"title_typography_font_weight\":\"600\",\"hover_title_color\":\"#FFFFFF\",\"active_title_color\":\"#FFFFFF\",\"_padding\":{\"unit\":\"px\",\"top\":\"20\",\"right\":\"0\",\"bottom\":\"0\",\"left\":\"0\",\"isLinked\":false},\"__globals__\":{\"title_typography_typography\":\"\",\"accordion_background_hover_color\":\"globals\\\/colors?id=primary\",\"hover_title_color\":\"\",\"active_title_color\":\"\",\"accordion_background_active_color\":\"globals\\\/colors?id=primary\",\"accordion_background_normal_color\":\"globals\\\/colors?id=556a01c\"}},\"elements\":[{\"id\":\"13a21e2\",\"elType\":\"container\",\"settings\":{\"_title\":\"\\u9879\\u76ee #1\",\"content_width\":\"full\",\"background_background\":\"classic\",\"padding\":{\"unit\":\"px\",\"top\":\"0\",\"right\":\"0\",\"bottom\":\"0\",\"left\":\"0\",\"isLinked\":true},\"__globals__\":{\"background_color\":\"\"}},\"elements\":[{\"id\":\"a9edb1f\",\"elType\":\"widget\",\"settings\":{\"editor\":\"<p>Generally speaking, if the customer provides detailed design drawings and specification requirements, transformers below 2500KVA can be completed within approximately 20 days; transformers above 2500KVA usually take about 30 to 40 days. The specific lead time depends on the complexity of the transformer.<\\\/p>\",\"_padding\":{\"unit\":\"px\",\"top\":\"20\",\"right\":\"0\",\"bottom\":\"0\",\"left\":\"0\",\"isLinked\":false},\"__globals__\":{\"typography_typography\":\"globals\\\/typography?id=d06f507\"}},\"elements\":[],\"widgetType\":\"text-editor\"}],\"isInner\":true,\"isLocked\":true},{\"id\":\"b2e3ee1\",\"elType\":\"container\",\"settings\":{\"_title\":\"\\u9879\\u76ee #1\",\"content_width\":\"full\",\"background_background\":\"classic\",\"padding\":{\"unit\":\"px\",\"top\":\"0\",\"right\":\"0\",\"bottom\":\"0\",\"left\":\"0\",\"isLinked\":true},\"__globals__\":{\"background_color\":\"\"}},\"elements\":[{\"id\":\"563c289\",\"elType\":\"widget\",\"settings\":{\"editor\":\"<p>For bulk cargo, we will use wooden cases for packaging; for full containers, we will use wooden pallets to reinforce the packaging.<\\\/p><p>If you have legally registered patent, we can pack the goods in your branded boxes after getting your authorization letters.<\\\/p>\",\"_padding\":{\"unit\":\"px\",\"top\":\"20\",\"right\":\"0\",\"bottom\":\"0\",\"left\":\"0\",\"isLinked\":false},\"__globals__\":{\"typography_typography\":\"globals\\\/typography?id=d06f507\"}},\"elements\":[],\"widgetType\":\"text-editor\"}],\"isInner\":true,\"isLocked\":true},{\"id\":\"febed70\",\"elType\":\"container\",\"settings\":{\"_title\":\"\\u9879\\u76ee #1\",\"content_width\":\"full\",\"background_background\":\"classic\",\"padding\":{\"unit\":\"px\",\"top\":\"0\",\"right\":\"0\",\"bottom\":\"0\",\"left\":\"0\",\"isLinked\":true},\"__globals__\":{\"background_color\":\"\"}},\"elements\":[{\"id\":\"577268c\",\"elType\":\"widget\",\"settings\":{\"editor\":\"<p>\\u2460T\\\/T 30% as deposit, and 70% before delivery.<\\\/p><p>\\u2461LC at sight<\\\/p><p>\\u2462DP at sight<\\\/p>\",\"_padding\":{\"unit\":\"px\",\"top\":\"20\",\"right\":\"0\",\"bottom\":\"0\",\"left\":\"0\",\"isLinked\":false},\"__globals__\":{\"typography_typography\":\"globals\\\/typography?id=d06f507\"}},\"elements\":[],\"widgetType\":\"text-editor\"}],\"isInner\":true,\"isLocked\":true},{\"id\":\"84549c5\",\"elType\":\"container\",\"settings\":{\"_title\":\"\\u9879\\u76ee #1\",\"content_width\":\"full\",\"background_background\":\"classic\",\"padding\":{\"unit\":\"px\",\"top\":\"0\",\"right\":\"0\",\"bottom\":\"0\",\"left\":\"0\",\"isLinked\":true},\"__globals__\":{\"background_color\":\"\"}},\"elements\":[{\"id\":\"eb70847\",\"elType\":\"widget\",\"settings\":{\"editor\":\"<p>EXW, FOB, CFR, CIF or some other delivery terms inquired by customers.<\\\/p>\",\"_padding\":{\"unit\":\"px\",\"top\":\"20\",\"right\":\"0\",\"bottom\":\"0\",\"left\":\"0\",\"isLinked\":false},\"__globals__\":{\"typography_typography\":\"\"},\"typography_typography\":\"custom\",\"typography_font_family\":\"Arial\",\"typography_font_size\":{\"unit\":\"px\",\"size\":16,\"sizes\":[]},\"paragraph_spacing\":{\"unit\":\"px\",\"size\":20,\"sizes\":[]}},\"elements\":[],\"widgetType\":\"text-editor\"}],\"isInner\":true,\"isLocked\":true}]},{\"id\":\"40ce24e\",\"elType\":\"widget\",\"settings\":{\"editor\":\"<p><strong>\\u2163.<\\\/strong><strong>Systems and Certifications<\\\/strong><\\\/p>\",\"typography_typography\":\"custom\",\"typography_font_family\":\"Arial\",\"typography_font_size\":{\"unit\":\"px\",\"size\":16,\"sizes\":[]},\"typography_line_height\":{\"unit\":\"px\",\"size\":20,\"sizes\":[]},\"paragraph_spacing\":{\"unit\":\"px\",\"size\":10,\"sizes\":[]},\"_padding\":{\"unit\":\"px\",\"top\":\"020\",\"right\":\"0\",\"bottom\":\"0\",\"left\":\"0\",\"isLinked\":false},\"_element_width\":\"initial\",\"_element_custom_width\":{\"unit\":\"%\",\"size\":65,\"sizes\":[]},\"__globals__\":{\"typography_typography\":\"\",\"text_color\":\"globals\\\/colors?id=7268ef8\"}},\"elements\":[],\"widgetType\":\"text-editor\"},{\"id\":\"dee0114\",\"elType\":\"widget\",\"widgetType\":\"nested-accordion\",\"settings\":{\"items\":[{\"item_title\":\"1.Does the design of Kete oil-immersed transformers comply with specific industry standards and certifications?\",\"_id\":\"1d2b564\"}],\"accordion_item_title_icon\":{\"value\":\"fas fa-angle-right\",\"library\":\"fa-solid\"},\"accordion_item_title_icon_active\":{\"value\":\"fas 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data=\\\"{"id":"40fb5fa","elType":"widget","settings":{"editor":"<p><strong>\u2160<\/strong><strong>.Brief introduction<\/strong><\/p><p><strong>1.<\/strong><strong>Standards:<\/strong> IEC 60076-7:2018, GB\/T 1094.7-2024, GB\/T 6451-2023<\/p><p><strong>2.<\/strong><strong>Power Rating:<\/strong> 30KVA-2500 KVA<\/p><p><strong>3.<\/strong><strong>Primary Voltage:<\/strong> 20kv<\/p><p><strong>4.<\/strong><strong>Secondary Voltage:<\/strong> 0.4kv or as required<\/p><p><strong>5.Voltage regulation mode:<\/strong> off-circuit tap changing<\/p><p><strong>6.Frequency:<\/strong> 50HZ or 60HZ<\/p><p><strong>7.<\/strong><strong>Type:<\/strong> 3 Phase Electric Power Transformer<\/p><p><strong>8.<\/strong><strong>Connection Type:<\/strong> Dyn11, Yyn0, or per client specification<\/p><p><strong>9.insulation grade\uff1a<\/strong>A<\/p><p><strong>10.Cooling method:<\/strong> ONAN<\/p><p><strong>\u2161<\/strong><strong>.Working conditions<\/strong><\/p><p><strong>1.<\/strong><strong>Ambient Temperature:<\/strong> No more than +40\u2103 No less than -25\u2103, The monthly average temperature is no more than +30\u2103, The yearly average temperature is no more than +20\u2103<\/p><p><strong>2.<\/strong><strong>Altitude:<\/strong> No more than 1000m.<\/p><p><strong>3.<\/strong><strong>Relative air humidity:<\/strong>\u226490%<\/p><p><strong>4.<\/strong><strong>installation site:<\/strong> no corrosion gas, No obvious dirt<\/p><p><strong>5.Scope of application:<\/strong> Power transmission and distribution, industrial production, and outdoor power supply.<\/p><p><strong>\u2162<\/strong><strong>.The tests for oil-immersed transformer<\/strong><\/p><p>The tests for oil-immersed transformers in our company can be divided into four categories based on the test stage and purpose: factory tests, type tests, on-site tests, and preventive tests.<\/p><p><strong>1.<\/strong><strong>Factory Tests (Verification Tests During Manufacturing)<\/strong><\/p><p>They mainly include: insulation resistance measurement, DC resistance measurement, turns ratio measurement, connection group and polarity test, no-load test, insulating oil test, and sealing test.<\/p><p><strong>2<\/strong><strong>.Type Tests (Design Verification Tests)<\/strong><\/p><p>They mainly include: temperature rise test, insulation strength test, short-circuit withstand capability test, zero-sequence impedance test, sound level measurement, tank mechanical strength test, and no-load current harmonic measurement.<\/p><p><strong>3.<\/strong><strong>On-Site Tests (Acceptance Tests After Installation)<\/strong><\/p><p>They mainly include: appearance inspection, DC resistance measurement, recheck of turns ratio and connection group, insulating oil breakdown voltage and dielectric loss test, power frequency withstand voltage test (partial), and tap changer operation test.<\/p><p><strong>4<\/strong><strong>.Preventive Tests (Maintenance Tests During Operation)<\/strong><\/p><p>They mainly include: insulation resistance and polarization index measurement, winding DC resistance measurement, dielectric loss factor (tan\u03b4) measurement, insulating oil test, partial discharge measurement, iron core grounding current measurement, bushing test, and infrared thermal imaging detection.<\/p><p>The test types for oil-immersed transformers cover the entire life cycle from manufacturing, installation to operation and maintenance. The test focuses at different stages vary: factory tests ensure qualified basic performance, type tests verify design limits, on-site tests guarantee installation quality, and preventive tests prevent operational failures. These tests together form an important guarantee for the safe and reliable operation of transformers.<\/p><p><strong>\u2163<\/strong><strong>.<\/strong><strong>Component inspection of oil-immersed transformer<\/strong><\/p><p>Component inspection of oil-immersed transformers is a crucial link to ensure their safe and stable operation, which mainly includes the following contents:<\/p><p><strong>1.<\/strong><strong>Appearance Inspection:<\/strong> Check whether the transformer's appearance is intact, whether there is oil leakage in the oil tank, and whether parts such as junction boxes, insulating bushings, and leads are damaged, rusted, or loose. At the same time, confirm that components like radiators, oil conservators, breathers, and oil level indicators are in normal condition.<\/p><p><strong>2.<\/strong><strong>Insulation Inspection:<\/strong> Use an insulation resistance tester to measure the insulation resistance between windings and ground as well as between windings themselves; the measured values should meet the specified standards. Additionally, conduct dielectric strength tests and insulating oil polarization tests to evaluate insulation performance.<\/p><p><strong>3.<\/strong><strong>Mechanical Operation Inspection:<\/strong> Check whether core equipment such as fans, coolers, pressure relief valves, and voltage regulating valves are operating normally. Ensure that bushings, connecting bolts, and terminal blocks are not loose, so as to guarantee the normal operation of mechanical components.<\/p><p><strong>4.<\/strong><strong>Oil Quality Inspection:<\/strong> Observe the color, odor, and transparency of transformer oil, and check for the presence of mixed impurities. Conduct tower-type oil sampling to inspect sediments and contaminants. Moreover, perform tests on transformer oil such as breakdown voltage, acid value, dielectric loss factor, moisture content, and particle size to determine if the oil quality is good.<\/p><p><strong>5.<\/strong><strong>Partial Discharge Detection:<\/strong> Use partial discharge detectors, such as installing UHF sensors or using high-frequency current transformers and ultrasonic sensors, to detect parts of the transformer such as windings and insulating bushings, and locate the position of the discharge source. If the partial discharge amount exceeds the specified value, the insulation risk needs to be evaluated.<\/p><p><strong>6.<\/strong><strong>Oil Temperature Inspection:<\/strong> Check whether the on-site gauge indications of the transformer's upper-layer oil temperature and high\/low winding temperatures are consistent with the readings on the control panel or CRT display. Verify if all temperatures are normal and whether they are close to or exceed the maximum allowable limits. At the same time, touch the surface of the radiating pipes by hand to check if the cooling device is in good condition.<\/p><p><strong>7.<\/strong><strong>Voltage and Current Inspection:<\/strong> Measure whether the voltage and current on the high-voltage side and low-voltage side of the transformer are within the normal range. Generally, the voltage on the high-voltage side must not exceed 105% of the nominal voltage value of its corresponding tap, to ensure the transformer operates within rated parameters.<\/p><p><strong>8.<\/strong><strong>Sound Inspection:<\/strong> A normally operating transformer emits a uniform \"buzzing\" sound. During inspection, pay attention to the presence of abnormal sounds such as sharp noises or crackling sounds. Abnormal sounds may be caused by internal faults or looseness and other reasons.<\/p><p><strong>\u2164<\/strong><strong>.<\/strong><strong>Certificate: <\/strong>CE, UL, ISO, SGS, CCC<\/p>","paragraph_spacing":{"unit":"px","size":16,"sizes":[]},"_padding":{"unit":"px","top":"20","right":"0","bottom":"0","left":"0","isLinked":false},"__globals__":{"typography_typography":"globals\/typography?id=d06f507"}},"elements":[],"widgetType":"text-editor"}\\\"]\\t\\t<\\\/div>\\n\\t\\t<div id=\\\"e-n-tab-content-649863462\\\" role=\\\"tabpanel\\\" aria-labelledby=\\\"e-n-tab-title-649863462\\\" data-tab-index=\\\"2\\\" style=\\\"--n-tabs-title-order: 2;\\\" class=\\\" elementor-element elementor-element-2e2154e e-con-full e-flex e-con e-child\\\" data-id=\\\"2e2154e\\\" data-element_type=\\\"container\\\">\\n\\t\\t\\t\\t<div class=\\\"elementor-element elementor-element-0f27574 elementor-widget elementor-widget-heading\\\" data-id=\\\"0f27574\\\" data-element_type=\\\"widget\\\" 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data=\\\"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Open links with Enter or Space, close with Escape, and navigate with Arrow Keys\\\">\\n\\t\\t\\t\\t\\t\\t<details id=\\\"e-n-accordion-item-2180\\\" class=\\\"e-n-accordion-item\\\" >\\n\\t\\t\\t\\t<summary class=\\\"e-n-accordion-item-title\\\" data-accordion-index=\\\"1\\\" tabindex=\\\"0\\\" aria-expanded=\\\"false\\\" aria-controls=\\\"e-n-accordion-item-2180\\\" >\\n\\t\\t\\t\\t\\t<span class='e-n-accordion-item-title-header'><div class=\\\"e-n-accordion-item-title-text\\\"> 1.What are the rated voltage and power of the Kete oil-immersed transformer? <\\\/div><\\\/span>\\n\\t\\t\\t\\t\\t\\t\\t<span class='e-n-accordion-item-title-icon'>\\n\\t\\t\\t<span class='e-opened' ><svg aria-hidden=\\\"true\\\" class=\\\"e-font-icon-svg e-fas-angle-down\\\" viewBox=\\\"0 0 320 512\\\" xmlns=\\\"http:\\\/\\\/www.w3.org\\\/2000\\\/svg\\\"><path d=\\\"M143 352.3L7 216.3c-9.4-9.4-9.4-24.6 0-33.9l22.6-22.6c9.4-9.4 24.6-9.4 33.9 0l96.4 96.4 96.4-96.4c9.4-9.4 24.6-9.4 33.9 0l22.6 22.6c9.4 9.4 9.4 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id=\\\"e-n-accordion-item-2181\\\" class=\\\"e-n-accordion-item\\\" >\\n\\t\\t\\t\\t<summary class=\\\"e-n-accordion-item-title\\\" data-accordion-index=\\\"2\\\" tabindex=\\\"-1\\\" aria-expanded=\\\"false\\\" aria-controls=\\\"e-n-accordion-item-2181\\\" >\\n\\t\\t\\t\\t\\t<span class='e-n-accordion-item-title-header'><div class=\\\"e-n-accordion-item-title-text\\\"> 2.What type of cooling system does the Kete oil-immersed transformer use? <\\\/div><\\\/span>\\n\\t\\t\\t\\t\\t\\t\\t<span class='e-n-accordion-item-title-icon'>\\n\\t\\t\\t<span class='e-opened' ><svg aria-hidden=\\\"true\\\" class=\\\"e-font-icon-svg e-fas-angle-down\\\" viewBox=\\\"0 0 320 512\\\" xmlns=\\\"http:\\\/\\\/www.w3.org\\\/2000\\\/svg\\\"><path d=\\\"M143 352.3L7 216.3c-9.4-9.4-9.4-24.6 0-33.9l22.6-22.6c9.4-9.4 24.6-9.4 33.9 0l96.4 96.4 96.4-96.4c9.4-9.4 24.6-9.4 33.9 0l22.6 22.6c9.4 9.4 9.4 24.6 0 33.9l-136 136c-9.2 9.4-24.4 9.4-33.8 0z\\\"><\\\/path><\\\/svg><\\\/span>\\n\\t\\t\\t<span 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id=\\\"e-n-accordion-item-2186\\\" class=\\\"e-n-accordion-item\\\" >\\n\\t\\t\\t\\t<summary class=\\\"e-n-accordion-item-title\\\" data-accordion-index=\\\"7\\\" tabindex=\\\"-1\\\" aria-expanded=\\\"false\\\" aria-controls=\\\"e-n-accordion-item-2186\\\" >\\n\\t\\t\\t\\t\\t<span class='e-n-accordion-item-title-header'><div class=\\\"e-n-accordion-item-title-text\\\"> 7.How to maintain transformers to maximize the service life of Kete oil-immersed transformers? <\\\/div><\\\/span>\\n\\t\\t\\t\\t\\t\\t\\t<span class='e-n-accordion-item-title-icon'>\\n\\t\\t\\t<span class='e-opened' ><svg aria-hidden=\\\"true\\\" class=\\\"e-font-icon-svg e-fas-angle-down\\\" viewBox=\\\"0 0 320 512\\\" xmlns=\\\"http:\\\/\\\/www.w3.org\\\/2000\\\/svg\\\"><path d=\\\"M143 352.3L7 216.3c-9.4-9.4-9.4-24.6 0-33.9l22.6-22.6c9.4-9.4 24.6-9.4 33.9 0l96.4 96.4 96.4-96.4c9.4-9.4 24.6-9.4 33.9 0l22.6 22.6c9.4 9.4 9.4 24.6 0 33.9l-136 136c-9.2 9.4-24.4 9.4-33.8 0z\\\"><\\\/path><\\\/svg><\\\/span>\\n\\t\\t\\t<span class='e-closed'><svg aria-hidden=\\\"true\\\" class=\\\"e-font-icon-svg e-fas-angle-right\\\" viewBox=\\\"0 0 256 512\\\" xmlns=\\\"http:\\\/\\\/www.w3.org\\\/2000\\\/svg\\\"><path d=\\\"M224.3 273l-136 136c-9.4 9.4-24.6 9.4-33.9 0l-22.6-22.6c-9.4-9.4-9.4-24.6 0-33.9l96.4-96.4-96.4-96.4c-9.4-9.4-9.4-24.6 0-33.9L54.3 103c9.4-9.4 24.6-9.4 33.9 0l136 136c9.5 9.4 9.5 24.6.1 34z\\\"><\\\/path><\\\/svg><\\\/span>\\n\\t\\t<\\\/span>\\n\\n\\t\\t\\t\\t\\t\\t<\\\/summary>\\n\\t\\t\\t\\t<div role=\\\"region\\\" aria-labelledby=\\\"e-n-accordion-item-2186\\\" class=\\\"elementor-element elementor-element-09a50ce e-con-full e-flex e-con e-child\\\" data-id=\\\"09a50ce\\\" data-element_type=\\\"container\\\" data-settings=\\\"{&quot;background_background&quot;:&quot;classic&quot;}\\\">\\n\\t\\t[elementor-element k=\\\"43aca594a86d0bbe94de5159700c1e94\\\" data=\\\"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\\\"]\\t\\t<\\\/div>\\n\\t\\t\\t\\t\\t<\\\/details>\\n\\t\\t\\t\\t\\t\\t<details id=\\\"e-n-accordion-item-2187\\\" class=\\\"e-n-accordion-item\\\" >\\n\\t\\t\\t\\t<summary class=\\\"e-n-accordion-item-title\\\" data-accordion-index=\\\"8\\\" tabindex=\\\"-1\\\" aria-expanded=\\\"false\\\" aria-controls=\\\"e-n-accordion-item-2187\\\" >\\n\\t\\t\\t\\t\\t<span class='e-n-accordion-item-title-header'><div class=\\\"e-n-accordion-item-title-text\\\"> 8.What type of oil is used in Kete oil-immersed transformers? What advantages does this type of oil have? <\\\/div><\\\/span>\\n\\t\\t\\t\\t\\t\\t\\t<span class='e-n-accordion-item-title-icon'>\\n\\t\\t\\t<span class='e-opened' ><svg aria-hidden=\\\"true\\\" class=\\\"e-font-icon-svg e-fas-angle-down\\\" viewBox=\\\"0 0 320 512\\\" xmlns=\\\"http:\\\/\\\/www.w3.org\\\/2000\\\/svg\\\"><path d=\\\"M143 352.3L7 216.3c-9.4-9.4-9.4-24.6 0-33.9l22.6-22.6c9.4-9.4 24.6-9.4 33.9 0l96.4 96.4 96.4-96.4c9.4-9.4 24.6-9.4 33.9 0l22.6 22.6c9.4 9.4 9.4 24.6 0 33.9l-136 136c-9.2 9.4-24.4 9.4-33.8 0z\\\"><\\\/path><\\\/svg><\\\/span>\\n\\t\\t\\t<span class='e-closed'><svg aria-hidden=\\\"true\\\" class=\\\"e-font-icon-svg e-fas-angle-right\\\" viewBox=\\\"0 0 256 512\\\" xmlns=\\\"http:\\\/\\\/www.w3.org\\\/2000\\\/svg\\\"><path d=\\\"M224.3 273l-136 136c-9.4 9.4-24.6 9.4-33.9 0l-22.6-22.6c-9.4-9.4-9.4-24.6 0-33.9l96.4-96.4-96.4-96.4c-9.4-9.4-9.4-24.6 0-33.9L54.3 103c9.4-9.4 24.6-9.4 33.9 0l136 136c9.5 9.4 9.5 24.6.1 34z\\\"><\\\/path><\\\/svg><\\\/span>\\n\\t\\t<\\\/span>\\n\\n\\t\\t\\t\\t\\t\\t<\\\/summary>\\n\\t\\t\\t\\t<div role=\\\"region\\\" aria-labelledby=\\\"e-n-accordion-item-2187\\\" class=\\\"elementor-element elementor-element-a831a3e e-con-full e-flex e-con e-child\\\" data-id=\\\"a831a3e\\\" data-element_type=\\\"container\\\" data-settings=\\\"{&quot;background_background&quot;:&quot;classic&quot;}\\\">\\n\\t\\t[elementor-element k=\\\"43aca594a86d0bbe94de5159700c1e94\\\" data=\\\"{"id":"72df141","elType":"widget","settings":{"editor":"<p>Mineral insulating oil in Kete oil-immersed transformers plays multiple crucial roles in ensuring the safe and stable operation of transformers.<\/p><p><strong>\u2460<\/strong><strong>Excellent Insulating Performance for Electrical Safety<\/strong><\/p><p><strong>\u00b7<\/strong><strong>High Breakdown Strength:<\/strong> The breakdown voltage of mineral insulating oil is typically above 30kV (high-quality products can reach over 50kV), far exceeding that of air (approximately 3kV\/mm). This effectively isolates conductors at different potentials and prevents short-circuit faults caused by insulation breakdown.<\/p><p><strong>\u00b7<\/strong><strong>Low Dielectric Loss and High Volume Resistivity:<\/strong> It has a small dielectric loss factor (tan\u03b4), resulting in low energy loss under electric fields and reduced heat generation. Meanwhile, its high volume resistivity (usually &gt;10\u00b9\u2074\u03a9\u30fbcm) minimizes leakage current, further enhancing insulation reliability.<\/p><p><strong>\u00b7<\/strong><strong>Filling Insulation Gaps:<\/strong> Solid insulating materials such as insulating paper and cardboard inside transformers have tiny pores. Mineral insulating oil can penetrate these pores, fill air gaps, avoid partial discharge caused by air ionization, and improve the overall dielectric strength of the insulation system.<\/p><p><strong>\u2461<\/strong><strong>Efficient Heat Dissipation to Maintain Stable Equipment Temperature Rise<\/strong><\/p><p><strong>\u00b7<\/strong><strong>Good Thermal Conductivity:<\/strong> Its thermal conductivity is approximately 0.12-0.15 W\/(m\u30fbK), much higher than that of air (about 0.026 W\/(m\u30fbK)), enabling it to quickly absorb heat generated by windings and iron cores.<\/p><p><strong>\u00b7<\/strong><strong>Convection Circulation Cooling:<\/strong> Heated insulating oil reduces in density, naturally rises to the radiator at the top of the transformer, exchanges heat with air through the radiator, cools down, and sinks, forming a circulation to continuously conduct heat out of the equipment.<\/p><p><strong>\u00b7<\/strong><strong>Synergy with Cooling Systems:<\/strong> In large transformers, mineral insulating oil can work with forced oil circulation cooling systems (such as oil pumps and cooling fans) to further enhance heat dissipation efficiency, meeting the needs of high-load operation.<\/p><p><strong>\u2462<\/strong><strong>Strong Chemical Stability to Extend Equipment Lifespan<\/strong><\/p><p><strong>\u00b7<\/strong><strong>Excellent Oxidation Resistance:<\/strong> Refined mineral insulating oil (e.g., derived from naphthenic or paraffinic crude oil) contains few impurities such as sulfur and nitrogen. It is not easily oxidized at high temperatures to form acids, colloids, or sludge, reducing corrosion and blockage of insulating materials.<\/p><p><strong>\u00b7<\/strong><strong>Low Volatility:<\/strong> It has a high boiling point and low volatility, so it is not prone to oil reduction or performance degradation due to volatilization during long-term operation, reducing maintenance frequency.<\/p><p><strong>\u00b7<\/strong><strong>Good Compatibility with Solid Insulation:<\/strong> It is well compatible with materials commonly used in transformers, such as cellulose paper and insulating cardboard, without chemical reactions that cause material aging, jointly maintaining the stability of the insulation system.<\/p><p><strong>\u2463<\/strong><strong>Arc Quenching and Protection to Enhance Operational Safety<\/strong><\/p><p><strong>\u00b7<\/strong><strong>Arc Quenching Function:<\/strong> When an arc is generated, the oil decomposes into gases such as hydrogen and methane, which can absorb arc energy. At the same time, the flow of oil can cool the arc area, quickly extinguishing the arc and preventing fault expansion.<\/p><p><strong>\u00b7<\/strong><strong>Isolating Air and Moisture:<\/strong> The oil layer covers the surface of internal components, isolating oxygen and moisture in the air, avoiding moisture-induced rust of metal components such as iron cores and windings, and reducing the risk of insulation deterioration.<\/p><p><strong>\u00b7<\/strong><strong>Fault Diagnosis Carrier:<\/strong> Insulating oil generates characteristic gases (such as acetylene and hydrogen) during faults. Through Dissolved Gas Analysis (DGA) technology, potential faults can be detected in advance, providing a basis for equipment condition assessment and maintenance.<\/p><p><strong>\u2464<\/strong><strong>Advantages in Economy and Practicality<\/strong><\/p><p><strong>\u00b7<\/strong><strong>Controllable Cost:<\/strong> Mineral insulating oil has wide raw material sources (based on petroleum refining), mature production processes, and relatively low prices, making it suitable for large-scale applications in various transformers (from distribution transformers to ultra-high voltage transformers).<\/p><p><strong>\u00b7<\/strong><strong>Convenient Maintenance: <\/strong>During normal operation, only regular monitoring of oil quality (such as moisture, dielectric loss, and breakdown voltage) is required. If necessary, filtration and regeneration treatments can restore its performance, with maintenance costs lower than some synthetic insulating oils.<\/p><p><strong>\u00b7<\/strong><strong>Strong Adaptability:<\/strong> It can maintain stable performance over a wide temperature range (e.g., good fluidity at low temperatures and resistance to deterioration at high temperatures), adapting to the operational needs of different climate regions.<\/p><p>Mineral insulating oil provides comprehensive operational protection for transformers through its four core roles: insulation, heat dissipation, chemical stability, and arc quenching protection. It is an indispensable key material in power systems. Its performance is directly related to the lifespan, efficiency, and safety of transformers, so it still dominates the power industry (although synthetic insulating oils are increasingly used in specific scenarios, mineral oil remains one of the most cost-effective choices).<\/p>","_padding":{"unit":"px","top":"20","right":"0","bottom":"0","left":"0","isLinked":false},"__globals__":{"typography_typography":""},"typography_typography":"custom","typography_font_family":"Arial","typography_font_size":{"unit":"px","size":16,"sizes":[]},"typography_line_height":{"unit":"px","size":20,"sizes":[]},"paragraph_spacing":{"unit":"px","size":20,"sizes":[]}},"elements":[],"widgetType":"text-editor"}\\\"]\\t\\t<\\\/div>\\n\\t\\t\\t\\t\\t<\\\/details>\\n\\t\\t\\t\\t\\t\\t<details id=\\\"e-n-accordion-item-2188\\\" class=\\\"e-n-accordion-item\\\" >\\n\\t\\t\\t\\t<summary class=\\\"e-n-accordion-item-title\\\" data-accordion-index=\\\"9\\\" tabindex=\\\"-1\\\" aria-expanded=\\\"false\\\" aria-controls=\\\"e-n-accordion-item-2188\\\" >\\n\\t\\t\\t\\t\\t<span class='e-n-accordion-item-title-header'><div class=\\\"e-n-accordion-item-title-text\\\"> 9.What protective measures does the Kete oil-immersed transformer have against overload, overheating, and short circuits? <\\\/div><\\\/span>\\n\\t\\t\\t\\t\\t\\t\\t<span class='e-n-accordion-item-title-icon'>\\n\\t\\t\\t<span class='e-opened' ><svg aria-hidden=\\\"true\\\" class=\\\"e-font-icon-svg e-fas-angle-down\\\" viewBox=\\\"0 0 320 512\\\" xmlns=\\\"http:\\\/\\\/www.w3.org\\\/2000\\\/svg\\\"><path d=\\\"M143 352.3L7 216.3c-9.4-9.4-9.4-24.6 0-33.9l22.6-22.6c9.4-9.4 24.6-9.4 33.9 0l96.4 96.4 96.4-96.4c9.4-9.4 24.6-9.4 33.9 0l22.6 22.6c9.4 9.4 9.4 24.6 0 33.9l-136 136c-9.2 9.4-24.4 9.4-33.8 0z\\\"><\\\/path><\\\/svg><\\\/span>\\n\\t\\t\\t<span class='e-closed'><svg aria-hidden=\\\"true\\\" class=\\\"e-font-icon-svg e-fas-angle-right\\\" viewBox=\\\"0 0 256 512\\\" xmlns=\\\"http:\\\/\\\/www.w3.org\\\/2000\\\/svg\\\"><path d=\\\"M224.3 273l-136 136c-9.4 9.4-24.6 9.4-33.9 0l-22.6-22.6c-9.4-9.4-9.4-24.6 0-33.9l96.4-96.4-96.4-96.4c-9.4-9.4-9.4-24.6 0-33.9L54.3 103c9.4-9.4 24.6-9.4 33.9 0l136 136c9.5 9.4 9.5 24.6.1 34z\\\"><\\\/path><\\\/svg><\\\/span>\\n\\t\\t<\\\/span>\\n\\n\\t\\t\\t\\t\\t\\t<\\\/summary>\\n\\t\\t\\t\\t<div role=\\\"region\\\" aria-labelledby=\\\"e-n-accordion-item-2188\\\" class=\\\"elementor-element elementor-element-5fb1d72 e-con-full e-flex e-con e-child\\\" data-id=\\\"5fb1d72\\\" data-element_type=\\\"container\\\" data-settings=\\\"{&quot;background_background&quot;:&quot;classic&quot;}\\\">\\n\\t\\t[elementor-element k=\\\"43aca594a86d0bbe94de5159700c1e94\\\" data=\\\"{"id":"9f1b9a3","elType":"widget","settings":{"editor":"<p>Kete oil-immersed transformers typically adopt multi-level protection measures, covering internal self-protection design, external monitoring devices, and relay protection systems.<\/p><p><strong>\u2460<\/strong><strong>Protection Measures Against \"Overload\"<\/strong><\/p><p>Overload refers to the situation where the transformer\u2019s load current exceeds the rated value for a long or short period, which may cause winding overheating and accelerated insulation aging. The main protection measures include:<\/p><p><strong>\u00b7<\/strong><strong>Overload Protection (Relay Protection System)<\/strong><\/p><p>Principle: Load current of the transformer is monitored by current transformers. When the current exceeds a certain multiple of the rated value (e.g., 1.2~1.5 times) and lasts for a set threshold, the protection action is triggered.<\/p><p><strong>\u00b7<\/strong><strong>Internal Thermal Protection Design<\/strong><strong>: <\/strong>Including winding Conductor Selection and heat Dissipation Structure Optimization: Natural heat dissipation capacity is enhanced by increasing the oil tank volume and optimizing the layout of cooling fins, mitigating temperature rise during overload.<\/p><p><strong>\u2461<\/strong><strong>Protection Measures Against \"Overheating\"<\/strong><\/p><p>Overheating may be caused by overload, excessive core loss, or cooling system failures, requiring real-time monitoring and rapid response:<\/p><p><strong>\u00b7<\/strong><strong>Temperature Monitoring Devices<\/strong><\/p><p>Oil Temperature Thermometer: Directly measures the upper oil temperature in the tank. An alarm is issued when the oil temperature exceeds 85\u00b0C (typical set value).<\/p><p>Winding Thermometer: Simulates the winding hot-spot temperature (combining oil temperature and load current). Protection is triggered when the hot-spot temperature exceeds 105\u00b0C.<\/p><p>Optical Fiber Temperature Measurement: In large transformers, optical fiber sensors are used to directly measure hot-spot temperatures of windings or cores, offering higher accuracy and faster response.<\/p><p><strong>\u00b7<\/strong><strong>Cooling System Protection<\/strong><\/p><p>Forced Cooling Assistance: Larger-capacity transformers are equipped with forced oil circulation air cooling (OFAF) or water cooling systems. These systems automatically start when oil temperature rises to enhance heat dissipation; if the cooling system fails (e.g., fan stops), an alarm is triggered or the load is reduced.<\/p><p>Buchholz Relay: Light gas action may occur when high oil temperature causes oil decomposition and generates a small amount of gas, issuing an alarm to prompt inspection of overheating causes.<\/p><p><strong>\u00b7<\/strong><strong>Over-Temperature Trip Protection<\/strong><\/p><p>When the temperature continues to rise to a dangerous level (e.g., oil temperature exceeds 95\u00b0C or winding hot-spot temperature exceeds 120\u00b0C), the protection system directly cuts off the transformer power supply to prevent insulation breakdown.<\/p><p><strong>\u2462<\/strong><strong>Protection Measures Against \"Short Circuit\"<\/strong><\/p><p>Short circuits (including internal winding short circuits and external outlet short circuits) generate massive currents that may instantly damage the transformer, requiring rapid fault isolation:<\/p><p><strong>\u00b7<\/strong><strong>Differential Protection (Main Protection)<\/strong><\/p><p>Principle: Based on the principle that \"current flowing into the transformer equals current flowing out,\" current difference is measured by current transformers on both sides. An internal short circuit is determined when the differential current exceeds the set value.<\/p><p>Features: It acts rapidly (usually within tens of milliseconds) and can effectively distinguish between internal short circuits and external faults, serving as the core of transformer short-circuit protection.<\/p><p><strong>\u00b7<\/strong><strong>Buchholz Protection (Exclusive to Internal Short Circuits)<\/strong><\/p><p>Heavy Gas Action: When an internal winding short circuit occurs, high temperatures from the short-circuit current cause intense oil decomposition, generating a large amount of gas. This pushes the Buchholz relay to act, triggering an instantaneous trip to cut off the power supply and prevent fault expansion.<\/p><p>Application Scenario: Particularly suitable for internal faults such as inter-turn or inter-layer winding short circuits, serving as an important supplement to differential protection.<\/p><p><strong>\u00b7<\/strong><strong>Overcurrent Protection (Backup Protection)<\/strong><\/p><p>External Short Circuit Protection: When an external short circuit occurs (e.g., outlet short circuit), overcurrent protection detects the overcurrent and trips with a delay (the delay must avoid the impact duration of the short-circuit current), preventing the transformer from enduring long-term short-circuit currents.<\/p><p>Instantaneous Overcurrent Protection: For close-range external short circuits, instantaneous overcurrent protection can trip without delay to quickly isolate the fault.<\/p><p><strong>\u00b7<\/strong><strong>Current Limiting Measures<\/strong><\/p><p>Short-Circuit Impedance Design: Windings are designed with a specific short-circuit impedance to limit the amplitude of short-circuit currents, reducing mechanical stress on windings and cores caused by short-circuit impacts.<\/p><p>Winding Mechanical Reinforcement: A robust winding structure (e.g., reinforced insulation binding, support strip fixation) is adopted to enhance mechanical strength against short-circuit impacts.<\/p><p><strong>\u2463<\/strong><strong>Comprehensive Protection and Auxiliary Measures<\/strong><\/p><p><strong>\u00b7<\/strong><strong>Grounding Protection:<\/strong> The transformer neutral point is grounded or grounded via an arc suppression coil. In case of a single-phase ground short circuit, zero-sequence current protection detects the fault and trips to prevent overvoltage damage to equipment.<\/p><p><strong>\u00b7<\/strong><strong>Backup Protection Coordination:<\/strong> Overload protection, overcurrent protection, etc., act as backups to provide safeguards when main protection fails, forming a multi-layered defense of \"main protection + backup protection.\"<\/p><p><strong>\u00b7<\/strong><strong>Online Monitoring System:<\/strong> Intelligent transformers are equipped with condition monitoring devices that collect real-time data on oil temperature, oil level, gas composition, partial discharge, etc. Potential faults are predicted through data analysis, enabling early warning of short-circuit or overheating risks.<\/p>","_padding":{"unit":"px","top":"20","right":"0","bottom":"0","left":"0","isLinked":false},"__globals__":{"typography_typography":""},"typography_typography":"custom","typography_font_family":"Arial","typography_font_size":{"unit":"px","size":16,"sizes":[]},"typography_line_height":{"unit":"px","size":20,"sizes":[]},"paragraph_spacing":{"unit":"px","size":20,"sizes":[]}},"elements":[],"widgetType":"text-editor"}\\\"]\\t\\t<\\\/div>\\n\\t\\t\\t\\t\\t<\\\/details>\\n\\t\\t\\t\\t\\t\\t<details id=\\\"e-n-accordion-item-2189\\\" class=\\\"e-n-accordion-item\\\" >\\n\\t\\t\\t\\t<summary class=\\\"e-n-accordion-item-title\\\" data-accordion-index=\\\"10\\\" tabindex=\\\"-1\\\" aria-expanded=\\\"false\\\" aria-controls=\\\"e-n-accordion-item-2189\\\" >\\n\\t\\t\\t\\t\\t<span class='e-n-accordion-item-title-header'><div class=\\\"e-n-accordion-item-title-text\\\"> 10.What aspects of Kete oil-immersed transformers can be customized? <\\\/div><\\\/span>\\n\\t\\t\\t\\t\\t\\t\\t<span class='e-n-accordion-item-title-icon'>\\n\\t\\t\\t<span class='e-opened' ><svg aria-hidden=\\\"true\\\" class=\\\"e-font-icon-svg e-fas-angle-down\\\" viewBox=\\\"0 0 320 512\\\" xmlns=\\\"http:\\\/\\\/www.w3.org\\\/2000\\\/svg\\\"><path d=\\\"M143 352.3L7 216.3c-9.4-9.4-9.4-24.6 0-33.9l22.6-22.6c9.4-9.4 24.6-9.4 33.9 0l96.4 96.4 96.4-96.4c9.4-9.4 24.6-9.4 33.9 0l22.6 22.6c9.4 9.4 9.4 24.6 0 33.9l-136 136c-9.2 9.4-24.4 9.4-33.8 0z\\\"><\\\/path><\\\/svg><\\\/span>\\n\\t\\t\\t<span class='e-closed'><svg aria-hidden=\\\"true\\\" class=\\\"e-font-icon-svg e-fas-angle-right\\\" viewBox=\\\"0 0 256 512\\\" xmlns=\\\"http:\\\/\\\/www.w3.org\\\/2000\\\/svg\\\"><path d=\\\"M224.3 273l-136 136c-9.4 9.4-24.6 9.4-33.9 0l-22.6-22.6c-9.4-9.4-9.4-24.6 0-33.9l96.4-96.4-96.4-96.4c-9.4-9.4-9.4-24.6 0-33.9L54.3 103c9.4-9.4 24.6-9.4 33.9 0l136 136c9.5 9.4 9.5 24.6.1 34z\\\"><\\\/path><\\\/svg><\\\/span>\\n\\t\\t<\\\/span>\\n\\n\\t\\t\\t\\t\\t\\t<\\\/summary>\\n\\t\\t\\t\\t<div role=\\\"region\\\" 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elementor-element-35cf19d elementor-widget elementor-widget-n-accordion\\\" data-id=\\\"35cf19d\\\" data-element_type=\\\"widget\\\" data-settings=\\\"{&quot;default_state&quot;:&quot;all_collapsed&quot;,&quot;max_items_expended&quot;:&quot;multiple&quot;,&quot;n_accordion_animation_duration&quot;:{&quot;unit&quot;:&quot;ms&quot;,&quot;size&quot;:400,&quot;sizes&quot;:[]}}\\\" data-widget_type=\\\"nested-accordion.default\\\">\\n\\t\\t\\t\\t\\t\\t\\t<div class=\\\"e-n-accordion\\\" aria-label=\\\"Accordion. Open links with Enter or Space, close with Escape, and navigate with Arrow Keys\\\">\\n\\t\\t\\t\\t\\t\\t<details id=\\\"e-n-accordion-item-5640\\\" class=\\\"e-n-accordion-item\\\" >\\n\\t\\t\\t\\t<summary class=\\\"e-n-accordion-item-title\\\" data-accordion-index=\\\"1\\\" tabindex=\\\"0\\\" aria-expanded=\\\"false\\\" aria-controls=\\\"e-n-accordion-item-5640\\\" >\\n\\t\\t\\t\\t\\t<span class='e-n-accordion-item-title-header'><div class=\\\"e-n-accordion-item-title-text\\\"> 1.What is included in Kete's warranty coverage during the warranty period? And how are the costs borne? <\\\/div><\\\/span>\\n\\t\\t\\t\\t\\t\\t\\t<span class='e-n-accordion-item-title-icon'>\\n\\t\\t\\t<span class='e-opened' ><svg aria-hidden=\\\"true\\\" class=\\\"e-font-icon-svg e-fas-angle-down\\\" viewBox=\\\"0 0 320 512\\\" xmlns=\\\"http:\\\/\\\/www.w3.org\\\/2000\\\/svg\\\"><path d=\\\"M143 352.3L7 216.3c-9.4-9.4-9.4-24.6 0-33.9l22.6-22.6c9.4-9.4 24.6-9.4 33.9 0l96.4 96.4 96.4-96.4c9.4-9.4 24.6-9.4 33.9 0l22.6 22.6c9.4 9.4 9.4 24.6 0 33.9l-136 136c-9.2 9.4-24.4 9.4-33.8 0z\\\"><\\\/path><\\\/svg><\\\/span>\\n\\t\\t\\t<span class='e-closed'><svg aria-hidden=\\\"true\\\" class=\\\"e-font-icon-svg e-fas-angle-right\\\" viewBox=\\\"0 0 256 512\\\" xmlns=\\\"http:\\\/\\\/www.w3.org\\\/2000\\\/svg\\\"><path d=\\\"M224.3 273l-136 136c-9.4 9.4-24.6 9.4-33.9 0l-22.6-22.6c-9.4-9.4-9.4-24.6 0-33.9l96.4-96.4-96.4-96.4c-9.4-9.4-9.4-24.6 0-33.9L54.3 103c9.4-9.4 24.6-9.4 33.9 0l136 136c9.5 9.4 9.5 24.6.1 34z\\\"><\\\/path><\\\/svg><\\\/span>\\n\\t\\t<\\\/span>\\n\\n\\t\\t\\t\\t\\t\\t<\\\/summary>\\n\\t\\t\\t\\t<div role=\\\"region\\\" aria-labelledby=\\\"e-n-accordion-item-5640\\\" class=\\\"elementor-element elementor-element-8db37d5 e-con-full e-flex e-con e-child\\\" data-id=\\\"8db37d5\\\" data-element_type=\\\"container\\\" data-settings=\\\"{&quot;background_background&quot;:&quot;classic&quot;}\\\">\\n\\t\\t[elementor-element k=\\\"43aca594a86d0bbe94de5159700c1e94\\\" data=\\\"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\\\"]\\t\\t<\\\/div>\\n\\t\\t\\t\\t\\t<\\\/details>\\n\\t\\t\\t\\t\\t\\t<details id=\\\"e-n-accordion-item-5641\\\" class=\\\"e-n-accordion-item\\\" >\\n\\t\\t\\t\\t<summary class=\\\"e-n-accordion-item-title\\\" data-accordion-index=\\\"2\\\" tabindex=\\\"-1\\\" aria-expanded=\\\"false\\\" aria-controls=\\\"e-n-accordion-item-5641\\\" >\\n\\t\\t\\t\\t\\t<span class='e-n-accordion-item-title-header'><div class=\\\"e-n-accordion-item-title-text\\\"> 2.Will Kete provide guidance documents for installation? <\\\/div><\\\/span>\\n\\t\\t\\t\\t\\t\\t\\t<span class='e-n-accordion-item-title-icon'>\\n\\t\\t\\t<span class='e-opened' ><svg aria-hidden=\\\"true\\\" class=\\\"e-font-icon-svg e-fas-angle-down\\\" viewBox=\\\"0 0 320 512\\\" xmlns=\\\"http:\\\/\\\/www.w3.org\\\/2000\\\/svg\\\"><path d=\\\"M143 352.3L7 216.3c-9.4-9.4-9.4-24.6 0-33.9l22.6-22.6c9.4-9.4 24.6-9.4 33.9 0l96.4 96.4 96.4-96.4c9.4-9.4 24.6-9.4 33.9 0l22.6 22.6c9.4 9.4 9.4 24.6 0 33.9l-136 136c-9.2 9.4-24.4 9.4-33.8 0z\\\"><\\\/path><\\\/svg><\\\/span>\\n\\t\\t\\t<span class='e-closed'><svg aria-hidden=\\\"true\\\" class=\\\"e-font-icon-svg e-fas-angle-right\\\" viewBox=\\\"0 0 256 512\\\" xmlns=\\\"http:\\\/\\\/www.w3.org\\\/2000\\\/svg\\\"><path d=\\\"M224.3 273l-136 136c-9.4 9.4-24.6 9.4-33.9 0l-22.6-22.6c-9.4-9.4-9.4-24.6 0-33.9l96.4-96.4-96.4-96.4c-9.4-9.4-9.4-24.6 0-33.9L54.3 103c9.4-9.4 24.6-9.4 33.9 0l136 136c9.5 9.4 9.5 24.6.1 34z\\\"><\\\/path><\\\/svg><\\\/span>\\n\\t\\t<\\\/span>\\n\\n\\t\\t\\t\\t\\t\\t<\\\/summary>\\n\\t\\t\\t\\t<div role=\\\"region\\\" aria-labelledby=\\\"e-n-accordion-item-5641\\\" class=\\\"elementor-element elementor-element-f40cd7f e-con-full e-flex e-con e-child\\\" data-id=\\\"f40cd7f\\\" data-element_type=\\\"container\\\" data-settings=\\\"{&quot;background_background&quot;:&quot;classic&quot;}\\\">\\n\\t\\t[elementor-element k=\\\"43aca594a86d0bbe94de5159700c1e94\\\" data=\\\"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\\\"]\\t\\t<\\\/div>\\n\\t\\t\\t\\t\\t<\\\/details>\\n\\t\\t\\t\\t\\t\\t<details id=\\\"e-n-accordion-item-5642\\\" class=\\\"e-n-accordion-item\\\" >\\n\\t\\t\\t\\t<summary class=\\\"e-n-accordion-item-title\\\" data-accordion-index=\\\"3\\\" tabindex=\\\"-1\\\" aria-expanded=\\\"false\\\" aria-controls=\\\"e-n-accordion-item-5642\\\" >\\n\\t\\t\\t\\t\\t<span class='e-n-accordion-item-title-header'><div class=\\\"e-n-accordion-item-title-text\\\"> 3.If maintenance is required and spare parts are purchased from Kete, how long will it take for the spare parts to arrive? <\\\/div><\\\/span>\\n\\t\\t\\t\\t\\t\\t\\t<span class='e-n-accordion-item-title-icon'>\\n\\t\\t\\t<span class='e-opened' ><svg aria-hidden=\\\"true\\\" class=\\\"e-font-icon-svg e-fas-angle-down\\\" viewBox=\\\"0 0 320 512\\\" xmlns=\\\"http:\\\/\\\/www.w3.org\\\/2000\\\/svg\\\"><path d=\\\"M143 352.3L7 216.3c-9.4-9.4-9.4-24.6 0-33.9l22.6-22.6c9.4-9.4 24.6-9.4 33.9 0l96.4 96.4 96.4-96.4c9.4-9.4 24.6-9.4 33.9 0l22.6 22.6c9.4 9.4 9.4 24.6 0 33.9l-136 136c-9.2 9.4-24.4 9.4-33.8 0z\\\"><\\\/path><\\\/svg><\\\/span>\\n\\t\\t\\t<span class='e-closed'><svg aria-hidden=\\\"true\\\" class=\\\"e-font-icon-svg e-fas-angle-right\\\" viewBox=\\\"0 0 256 512\\\" xmlns=\\\"http:\\\/\\\/www.w3.org\\\/2000\\\/svg\\\"><path d=\\\"M224.3 273l-136 136c-9.4 9.4-24.6 9.4-33.9 0l-22.6-22.6c-9.4-9.4-9.4-24.6 0-33.9l96.4-96.4-96.4-96.4c-9.4-9.4-9.4-24.6 0-33.9L54.3 103c9.4-9.4 24.6-9.4 33.9 0l136 136c9.5 9.4 9.5 24.6.1 34z\\\"><\\\/path><\\\/svg><\\\/span>\\n\\t\\t<\\\/span>\\n\\n\\t\\t\\t\\t\\t\\t<\\\/summary>\\n\\t\\t\\t\\t<div role=\\\"region\\\" aria-labelledby=\\\"e-n-accordion-item-5642\\\" class=\\\"elementor-element elementor-element-a349b2f e-con-full e-flex e-con e-child\\\" data-id=\\\"a349b2f\\\" data-element_type=\\\"container\\\" data-settings=\\\"{&quot;background_background&quot;:&quot;classic&quot;}\\\">\\n\\t\\t[elementor-element k=\\\"43aca594a86d0bbe94de5159700c1e94\\\" data=\\\"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\\\"]\\t\\t<\\\/div>\\n\\t\\t\\t\\t\\t<\\\/details>\\n\\t\\t\\t\\t\\t\\t<details id=\\\"e-n-accordion-item-5643\\\" class=\\\"e-n-accordion-item\\\" >\\n\\t\\t\\t\\t<summary class=\\\"e-n-accordion-item-title\\\" data-accordion-index=\\\"4\\\" tabindex=\\\"-1\\\" aria-expanded=\\\"false\\\" aria-controls=\\\"e-n-accordion-item-5643\\\" >\\n\\t\\t\\t\\t\\t<span class='e-n-accordion-item-title-header'><div class=\\\"e-n-accordion-item-title-text\\\"> 4.How to handle emergency maintenance requests, and what is the typical response time? <\\\/div><\\\/span>\\n\\t\\t\\t\\t\\t\\t\\t<span class='e-n-accordion-item-title-icon'>\\n\\t\\t\\t<span class='e-opened' ><svg aria-hidden=\\\"true\\\" class=\\\"e-font-icon-svg e-fas-angle-down\\\" viewBox=\\\"0 0 320 512\\\" xmlns=\\\"http:\\\/\\\/www.w3.org\\\/2000\\\/svg\\\"><path d=\\\"M143 352.3L7 216.3c-9.4-9.4-9.4-24.6 0-33.9l22.6-22.6c9.4-9.4 24.6-9.4 33.9 0l96.4 96.4 96.4-96.4c9.4-9.4 24.6-9.4 33.9 0l22.6 22.6c9.4 9.4 9.4 24.6 0 33.9l-136 136c-9.2 9.4-24.4 9.4-33.8 0z\\\"><\\\/path><\\\/svg><\\\/span>\\n\\t\\t\\t<span class='e-closed'><svg aria-hidden=\\\"true\\\" class=\\\"e-font-icon-svg e-fas-angle-right\\\" viewBox=\\\"0 0 256 512\\\" xmlns=\\\"http:\\\/\\\/www.w3.org\\\/2000\\\/svg\\\"><path d=\\\"M224.3 273l-136 136c-9.4 9.4-24.6 9.4-33.9 0l-22.6-22.6c-9.4-9.4-9.4-24.6 0-33.9l96.4-96.4-96.4-96.4c-9.4-9.4-9.4-24.6 0-33.9L54.3 103c9.4-9.4 24.6-9.4 33.9 0l136 136c9.5 9.4 9.5 24.6.1 34z\\\"><\\\/path><\\\/svg><\\\/span>\\n\\t\\t<\\\/span>\\n\\n\\t\\t\\t\\t\\t\\t<\\\/summary>\\n\\t\\t\\t\\t<div role=\\\"region\\\" aria-labelledby=\\\"e-n-accordion-item-5643\\\" class=\\\"elementor-element elementor-element-05bb81a e-con-full e-flex e-con e-child\\\" data-id=\\\"05bb81a\\\" data-element_type=\\\"container\\\" data-settings=\\\"{&quot;background_background&quot;:&quot;classic&quot;}\\\">\\n\\t\\t[elementor-element k=\\\"43aca594a86d0bbe94de5159700c1e94\\\" data=\\\"eyJpZCI6IjRlODgyYTciLCJlbFR5cGUiOiJ3aWRnZXQiLCJzZXR0aW5ncyI6eyJlZGl0b3IiOiI8cD4yNFwvNyB0ZWNobmljYWwgc3VwcG9ydCBob3RsaW5lLCBlbnN1cmluZyBhIGZhdWx0IHRpbWUgb2YgXHUyMjY0IDIgaG91cnMuPFwvcD4iLCJfcGFkZGluZyI6eyJ1bml0IjoicHgiLCJ0b3AiOiIyMCIsInJpZ2h0IjoiMCIsImJvdHRvbSI6IjAiLCJsZWZ0IjoiMCIsImlzTGlua2VkIjpmYWxzZX0sIl9fZ2xvYmFsc19fIjp7InR5cG9ncmFwaHlfdHlwb2dyYXBoeSI6IiJ9LCJ0eXBvZ3JhcGh5X3R5cG9ncmFwaHkiOiJjdXN0b20iLCJ0eXBvZ3JhcGh5X2ZvbnRfZmFtaWx5IjoiQXJpYWwiLCJ0eXBvZ3JhcGh5X2ZvbnRfc2l6ZSI6eyJ1bml0IjoicHgiLCJzaXplIjoxNiwic2l6ZXMiOltdfSwicGFyYWdyYXBoX3NwYWNpbmciOnsidW5pdCI6InB4Iiwic2l6ZSI6MjAsInNpemVzIjpbXX19LCJlbGVtZW50cyI6W10sIndpZGdldFR5cGUiOiJ0ZXh0LWVkaXRvciJ9\\\"]\\t\\t<\\\/div>\\n\\t\\t\\t\\t\\t<\\\/details>\\n\\t\\t\\t\\t\\t\\t<details id=\\\"e-n-accordion-item-5644\\\" class=\\\"e-n-accordion-item\\\" >\\n\\t\\t\\t\\t<summary class=\\\"e-n-accordion-item-title\\\" data-accordion-index=\\\"5\\\" tabindex=\\\"-1\\\" aria-expanded=\\\"false\\\" aria-controls=\\\"e-n-accordion-item-5644\\\" >\\n\\t\\t\\t\\t\\t<span class='e-n-accordion-item-title-header'><div class=\\\"e-n-accordion-item-title-text\\\"> 5.What kind of after-sales support can Kete provide, including troubleshooting and maintenance services? <\\\/div><\\\/span>\\n\\t\\t\\t\\t\\t\\t\\t<span class='e-n-accordion-item-title-icon'>\\n\\t\\t\\t<span class='e-opened' ><svg aria-hidden=\\\"true\\\" class=\\\"e-font-icon-svg e-fas-angle-down\\\" viewBox=\\\"0 0 320 512\\\" xmlns=\\\"http:\\\/\\\/www.w3.org\\\/2000\\\/svg\\\"><path d=\\\"M143 352.3L7 216.3c-9.4-9.4-9.4-24.6 0-33.9l22.6-22.6c9.4-9.4 24.6-9.4 33.9 0l96.4 96.4 96.4-96.4c9.4-9.4 24.6-9.4 33.9 0l22.6 22.6c9.4 9.4 9.4 24.6 0 33.9l-136 136c-9.2 9.4-24.4 9.4-33.8 0z\\\"><\\\/path><\\\/svg><\\\/span>\\n\\t\\t\\t<span class='e-closed'><svg aria-hidden=\\\"true\\\" class=\\\"e-font-icon-svg e-fas-angle-right\\\" viewBox=\\\"0 0 256 512\\\" xmlns=\\\"http:\\\/\\\/www.w3.org\\\/2000\\\/svg\\\"><path d=\\\"M224.3 273l-136 136c-9.4 9.4-24.6 9.4-33.9 0l-22.6-22.6c-9.4-9.4-9.4-24.6 0-33.9l96.4-96.4-96.4-96.4c-9.4-9.4-9.4-24.6 0-33.9L54.3 103c9.4-9.4 24.6-9.4 33.9 0l136 136c9.5 9.4 9.5 24.6.1 34z\\\"><\\\/path><\\\/svg><\\\/span>\\n\\t\\t<\\\/span>\\n\\n\\t\\t\\t\\t\\t\\t<\\\/summary>\\n\\t\\t\\t\\t<div role=\\\"region\\\" aria-labelledby=\\\"e-n-accordion-item-5644\\\" class=\\\"elementor-element elementor-element-0d9ad48 e-con-full e-flex e-con e-child\\\" data-id=\\\"0d9ad48\\\" data-element_type=\\\"container\\\" data-settings=\\\"{&quot;background_background&quot;:&quot;classic&quot;}\\\">\\n\\t\\t[elementor-element k=\\\"43aca594a86d0bbe94de5159700c1e94\\\" data=\\\"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\\\"]\\t\\t<\\\/div>\\n\\t\\t\\t\\t\\t<\\\/details>\\n\\t\\t\\t\\t\\t\\t<details id=\\\"e-n-accordion-item-5645\\\" class=\\\"e-n-accordion-item\\\" >\\n\\t\\t\\t\\t<summary class=\\\"e-n-accordion-item-title\\\" data-accordion-index=\\\"6\\\" tabindex=\\\"-1\\\" aria-expanded=\\\"false\\\" aria-controls=\\\"e-n-accordion-item-5645\\\" >\\n\\t\\t\\t\\t\\t<span class='e-n-accordion-item-title-header'><div class=\\\"e-n-accordion-item-title-text\\\"> 6.Can Kete provide options for service contracts or extended warranty periods? <\\\/div><\\\/span>\\n\\t\\t\\t\\t\\t\\t\\t<span class='e-n-accordion-item-title-icon'>\\n\\t\\t\\t<span class='e-opened' ><svg aria-hidden=\\\"true\\\" class=\\\"e-font-icon-svg e-fas-angle-down\\\" viewBox=\\\"0 0 320 512\\\" xmlns=\\\"http:\\\/\\\/www.w3.org\\\/2000\\\/svg\\\"><path d=\\\"M143 352.3L7 216.3c-9.4-9.4-9.4-24.6 0-33.9l22.6-22.6c9.4-9.4 24.6-9.4 33.9 0l96.4 96.4 96.4-96.4c9.4-9.4 24.6-9.4 33.9 0l22.6 22.6c9.4 9.4 9.4 24.6 0 33.9l-136 136c-9.2 9.4-24.4 9.4-33.8 0z\\\"><\\\/path><\\\/svg><\\\/span>\\n\\t\\t\\t<span class='e-closed'><svg aria-hidden=\\\"true\\\" class=\\\"e-font-icon-svg e-fas-angle-right\\\" viewBox=\\\"0 0 256 512\\\" xmlns=\\\"http:\\\/\\\/www.w3.org\\\/2000\\\/svg\\\"><path d=\\\"M224.3 273l-136 136c-9.4 9.4-24.6 9.4-33.9 0l-22.6-22.6c-9.4-9.4-9.4-24.6 0-33.9l96.4-96.4-96.4-96.4c-9.4-9.4-9.4-24.6 0-33.9L54.3 103c9.4-9.4 24.6-9.4 33.9 0l136 136c9.5 9.4 9.5 24.6.1 34z\\\"><\\\/path><\\\/svg><\\\/span>\\n\\t\\t<\\\/span>\\n\\n\\t\\t\\t\\t\\t\\t<\\\/summary>\\n\\t\\t\\t\\t<div role=\\\"region\\\" aria-labelledby=\\\"e-n-accordion-item-5645\\\" class=\\\"elementor-element elementor-element-fee700e e-con-full e-flex e-con e-child\\\" data-id=\\\"fee700e\\\" data-element_type=\\\"container\\\" data-settings=\\\"{&quot;background_background&quot;:&quot;classic&quot;}\\\">\\n\\t\\t[elementor-element k=\\\"43aca594a86d0bbe94de5159700c1e94\\\" data=\\\"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\\\"]\\t\\t<\\\/div>\\n\\t\\t\\t\\t\\t<\\\/details>\\n\\t\\t\\t\\t\\t<\\\/div>\\n\\t\\t\\t\\t\\t\\t<\\\/div>\\n\\t\\t[elementor-element k=\\\"43aca594a86d0bbe94de5159700c1e94\\\" data=\\\"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\\\"]\\t\\t<div class=\\\"elementor-element elementor-element-400c4e4 elementor-widget elementor-widget-n-accordion\\\" data-id=\\\"400c4e4\\\" data-element_type=\\\"widget\\\" data-settings=\\\"{&quot;default_state&quot;:&quot;all_collapsed&quot;,&quot;max_items_expended&quot;:&quot;multiple&quot;,&quot;n_accordion_animation_duration&quot;:{&quot;unit&quot;:&quot;ms&quot;,&quot;size&quot;:400,&quot;sizes&quot;:[]}}\\\" data-widget_type=\\\"nested-accordion.default\\\">\\n\\t\\t\\t\\t\\t\\t\\t<div class=\\\"e-n-accordion\\\" aria-label=\\\"Accordion. Open links with Enter or Space, close with Escape, and navigate with Arrow Keys\\\">\\n\\t\\t\\t\\t\\t\\t<details id=\\\"e-n-accordion-item-6710\\\" class=\\\"e-n-accordion-item\\\" >\\n\\t\\t\\t\\t<summary class=\\\"e-n-accordion-item-title\\\" data-accordion-index=\\\"1\\\" tabindex=\\\"0\\\" aria-expanded=\\\"false\\\" aria-controls=\\\"e-n-accordion-item-6710\\\" >\\n\\t\\t\\t\\t\\t<span class='e-n-accordion-item-title-header'><div class=\\\"e-n-accordion-item-title-text\\\"> 1.What is the manufacturing and delivery lead time for Kete oil-immersed transformers? <\\\/div><\\\/span>\\n\\t\\t\\t\\t\\t\\t\\t<span class='e-n-accordion-item-title-icon'>\\n\\t\\t\\t<span class='e-opened' ><svg aria-hidden=\\\"true\\\" class=\\\"e-font-icon-svg e-fas-angle-down\\\" viewBox=\\\"0 0 320 512\\\" xmlns=\\\"http:\\\/\\\/www.w3.org\\\/2000\\\/svg\\\"><path d=\\\"M143 352.3L7 216.3c-9.4-9.4-9.4-24.6 0-33.9l22.6-22.6c9.4-9.4 24.6-9.4 33.9 0l96.4 96.4 96.4-96.4c9.4-9.4 24.6-9.4 33.9 0l22.6 22.6c9.4 9.4 9.4 24.6 0 33.9l-136 136c-9.2 9.4-24.4 9.4-33.8 0z\\\"><\\\/path><\\\/svg><\\\/span>\\n\\t\\t\\t<span class='e-closed'><svg aria-hidden=\\\"true\\\" class=\\\"e-font-icon-svg e-fas-angle-right\\\" viewBox=\\\"0 0 256 512\\\" xmlns=\\\"http:\\\/\\\/www.w3.org\\\/2000\\\/svg\\\"><path d=\\\"M224.3 273l-136 136c-9.4 9.4-24.6 9.4-33.9 0l-22.6-22.6c-9.4-9.4-9.4-24.6 0-33.9l96.4-96.4-96.4-96.4c-9.4-9.4-9.4-24.6 0-33.9L54.3 103c9.4-9.4 24.6-9.4 33.9 0l136 136c9.5 9.4 9.5 24.6.1 34z\\\"><\\\/path><\\\/svg><\\\/span>\\n\\t\\t<\\\/span>\\n\\n\\t\\t\\t\\t\\t\\t<\\\/summary>\\n\\t\\t\\t\\t<div role=\\\"region\\\" aria-labelledby=\\\"e-n-accordion-item-6710\\\" class=\\\"elementor-element elementor-element-13a21e2 e-con-full e-flex e-con e-child\\\" data-id=\\\"13a21e2\\\" data-element_type=\\\"container\\\" data-settings=\\\"{&quot;background_background&quot;:&quot;classic&quot;}\\\">\\n\\t\\t[elementor-element k=\\\"43aca594a86d0bbe94de5159700c1e94\\\" data=\\\"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\\\"]\\t\\t<\\\/div>\\n\\t\\t\\t\\t\\t<\\\/details>\\n\\t\\t\\t\\t\\t\\t<details id=\\\"e-n-accordion-item-6711\\\" class=\\\"e-n-accordion-item\\\" >\\n\\t\\t\\t\\t<summary class=\\\"e-n-accordion-item-title\\\" data-accordion-index=\\\"2\\\" tabindex=\\\"-1\\\" aria-expanded=\\\"false\\\" aria-controls=\\\"e-n-accordion-item-6711\\\" >\\n\\t\\t\\t\\t\\t<span class='e-n-accordion-item-title-header'><div class=\\\"e-n-accordion-item-title-text\\\"> 2.What is the packaging for Kete oil-immersed transformers? 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