{"id":5875,"date":"2025-11-27T05:38:48","date_gmt":"2025-11-27T05:38:48","guid":{"rendered":"https:\/\/www.ketetransformer.com\/?p=5875"},"modified":"2025-11-27T06:41:06","modified_gmt":"2025-11-27T06:41:06","slug":"transformer-classification-methods","status":"publish","type":"post","link":"https:\/\/www.ketetransformer.com\/ru\/transformer-classification-methods\/","title":{"rendered":"\u041c\u0435\u0442\u043e\u0434\u044b \u043a\u043b\u0430\u0441\u0441\u0438\u0444\u0438\u043a\u0430\u0446\u0438\u0438 \u0442\u0440\u0430\u043d\u0441\u0444\u043e\u0440\u043c\u0430\u0442\u043e\u0440\u043e\u0432"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-post\" data-elementor-id=\"5875\" class=\"elementor elementor-5875\" data-elementor-post-type=\"post\">\n\t\t\t\t<div class=\"elementor-element elementor-element-433bd68 e-flex e-con-boxed e-con e-parent\" data-id=\"433bd68\" 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-48e4914 elementor-widget elementor-widget-text-editor\" data-id=\"48e4914\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p><span data-font-family=\"\u5fae\u8f6f\u96c5\u9ed1\">Transformers come in many different types, but their working principle is always based on electromagnetic induction. The commonly used classification methods for transformers are summarized as follows:<\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-cb27279 elementor-toc--minimized-on-tablet elementor-widget elementor-widget-table-of-contents\" data-id=\"cb27279\" data-element_type=\"widget\" data-settings=\"{&quot;headings_by_tags&quot;:[&quot;h4&quot;,&quot;h5&quot;,&quot;h6&quot;],&quot;exclude_headings_by_selector&quot;:[],&quot;no_headings_message&quot;:&quot;No headings were found on this page.&quot;,&quot;marker_view&quot;:&quot;numbers&quot;,&quot;minimize_box&quot;:&quot;yes&quot;,&quot;minimized_on&quot;:&quot;tablet&quot;,&quot;hierarchical_view&quot;:&quot;yes&quot;,&quot;min_height&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;size&quot;:&quot;&quot;,&quot;sizes&quot;:[]},&quot;min_height_tablet&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;size&quot;:&quot;&quot;,&quot;sizes&quot;:[]},&quot;min_height_mobile&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;size&quot;:&quot;&quot;,&quot;sizes&quot;:[]}}\" data-widget_type=\"table-of-contents.default\">\n\t\t\t\t\t\t\t\t\t<div class=\"elementor-toc__header\">\n\t\t\t\t\t\t<h4 class=\"elementor-toc__header-title\">\n\t\t\t\tTable of Contents\t\t\t<\/h4>\n\t\t\t\t\t\t\t\t\t\t<div class=\"elementor-toc__toggle-button elementor-toc__toggle-button--expand\" role=\"button\" tabindex=\"0\" aria-controls=\"elementor-toc__cb27279\" aria-expanded=\"true\" aria-label=\"Abrir \u00edndice\"><svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-chevron-down\" viewBox=\"0 0 448 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M207.029 381.476L12.686 187.132c-9.373-9.373-9.373-24.569 0-33.941l22.667-22.667c9.357-9.357 24.522-9.375 33.901-.04L224 284.505l154.745-154.021c9.379-9.335 24.544-9.317 33.901.04l22.667 22.667c9.373 9.373 9.373 24.569 0 33.941L240.971 381.476c-9.373 9.372-24.569 9.372-33.942 0z\"><\/path><\/svg><\/div>\n\t\t\t\t<div class=\"elementor-toc__toggle-button elementor-toc__toggle-button--collapse\" role=\"button\" tabindex=\"0\" aria-controls=\"elementor-toc__cb27279\" aria-expanded=\"true\" aria-label=\"Cerrar \u00edndice\"><svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-chevron-up\" viewBox=\"0 0 448 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M240.971 130.524l194.343 194.343c9.373 9.373 9.373 24.569 0 33.941l-22.667 22.667c-9.357 9.357-24.522 9.375-33.901.04L224 227.495 69.255 381.516c-9.379 9.335-24.544 9.317-33.901-.04l-22.667-22.667c-9.373-9.373-9.373-24.569 0-33.941L207.03 130.525c9.372-9.373 24.568-9.373 33.941-.001z\"><\/path><\/svg><\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<div id=\"elementor-toc__cb27279\" class=\"elementor-toc__body\">\n\t\t\t<div class=\"elementor-toc__spinner-container\">\n\t\t\t\t<svg class=\"elementor-toc__spinner eicon-animation-spin e-font-icon-svg e-eicon-loading\" aria-hidden=\"true\" viewBox=\"0 0 1000 1000\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M500 975V858C696 858 858 696 858 500S696 142 500 142 142 304 142 500H25C25 237 238 25 500 25S975 237 975 500 763 975 500 975Z\"><\/path><\/svg>\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-9e38bbc elementor-widget elementor-widget-image\" data-id=\"9e38bbc\" 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=\"750\" height=\"750\" src=\"https:\/\/www.ketetransformer.com\/wp-content\/uploads\/2025\/09\/dry-type-transformers-30.webp\" class=\"attachment-large size-large wp-image-3572\" alt=\"\" srcset=\"https:\/\/www.ketetransformer.com\/wp-content\/uploads\/2025\/09\/dry-type-transformers-30.webp 750w, https:\/\/www.ketetransformer.com\/wp-content\/uploads\/2025\/09\/dry-type-transformers-30-300x300.webp 300w, https:\/\/www.ketetransformer.com\/wp-content\/uploads\/2025\/09\/dry-type-transformers-30-150x150.webp 150w, https:\/\/www.ketetransformer.com\/wp-content\/uploads\/2025\/09\/dry-type-transformers-30-600x600.webp 600w, https:\/\/www.ketetransformer.com\/wp-content\/uploads\/2025\/09\/dry-type-transformers-30-100x100.webp 100w\" sizes=\"(max-width: 750px) 100vw, 750px\" \/>\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-9736800 elementor-widget elementor-widget-text-editor\" data-id=\"9736800\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<h5><span data-font-family=\"\u5fae\u8f6f\u96c5\u9ed1\">1. Classification by<\/span> Application<\/h5>\n<p style=\"padding-left: 40px;\"><span data-font-family=\"\u5fae\u8f6f\u96c5\u9ed1\">\u2460 Power Transformers<\/span><\/p>\n<p style=\"padding-left: 40px;\"><span data-font-family=\"\u5fae\u8f6f\u96c5\u9ed1\"> Used for voltage step-up or step-down in power transmission and distribution systems; this is the most common type of transformer.<\/span><\/p>\n<p style=\"padding-left: 40px;\"><span data-font-family=\"\u5fae\u8f6f\u96c5\u9ed1\">\u2461 Test Transformers<\/span><\/p>\n<p style=\"padding-left: 40px;\"><span data-font-family=\"\u5fae\u8f6f\u96c5\u9ed1\"> Used to generate high voltage for high-voltage testing of electrical equipment.<\/span><\/p>\n<p style=\"padding-left: 40px;\"><span data-font-family=\"\u5fae\u8f6f\u96c5\u9ed1\">\u2462 Instrument Transformers<\/span><\/p>\n<p style=\"padding-left: 40px;\"><span data-font-family=\"\u5fae\u8f6f\u96c5\u9ed1\"> Such as voltage transformers (VTs) and current transformers (CTs), used for measuring instruments and relay protection devices.<\/span><\/p>\n<p style=\"padding-left: 40px;\"><span data-font-family=\"\u5fae\u8f6f\u96c5\u9ed1\">\u2463 Special-Purpose Transformers<\/span><\/p>\n<p style=\"padding-left: 40px;\"><span data-font-family=\"\u5fae\u8f6f\u96c5\u9ed1\"> Including furnace transformers for smelting, rectifier transformers for electrolysis, welding transformers for arc welding, and variable transformers for test and laboratory use.<\/span><\/p>\n<h5><span style=\"font-size: 19.2px;\">2. Classification by Number of Phases<\/span><\/h5>\n<p style=\"padding-left: 40px;\"><span data-font-family=\"\u5fae\u8f6f\u96c5\u9ed1\">\u2460 Single-Phase Transformers.<\/span><\/p>\n<p style=\"padding-left: 40px;\"><span data-font-family=\"\u5fae\u8f6f\u96c5\u9ed1\"> Used for single-phase loads.<\/span><\/p>\n<p style=\"padding-left: 40px;\"><span data-font-family=\"\u5fae\u8f6f\u96c5\u9ed1\">\u2461 Three-Phase Transformers.<\/span><\/p>\n<p style=\"padding-left: 40px;\"><span data-font-family=\"\u5fae\u8f6f\u96c5\u9ed1\"> Used in three-phase systems for stepping up or stepping down voltages.<\/span><\/p>\n<h5><span style=\"font-size: 16px;\">3. Classification by Winding Structure<\/span><\/h5>\n<p style=\"padding-left: 40px;\"><span data-font-family=\"\u5fae\u8f6f\u96c5\u9ed1\">\u2460 Autotransformers\uff1a<\/span><\/p>\n<p style=\"padding-left: 40px;\"><span data-font-family=\"\u5fae\u8f6f\u96c5\u9ed1\"> Used for ultra-high-voltage, large-capacity power systems where the voltage ratio change is relatively small.<\/span><\/p>\n<p style=\"padding-left: 40px;\"><span data-font-family=\"\u5fae\u8f6f\u96c5\u9ed1\">\u2461 Two-Winding Transformers.<\/span><\/p>\n<p style=\"padding-left: 40px;\"><span data-font-family=\"\u5fae\u8f6f\u96c5\u9ed1\"> Used for connecting two voltage levels in a power system.<\/span><\/p>\n<p style=\"padding-left: 40px;\"><span data-font-family=\"\u5fae\u8f6f\u96c5\u9ed1\">\u2462 Three-Winding Transformers.<\/span><\/p>\n<p style=\"padding-left: 40px;\"><span data-font-family=\"\u5fae\u8f6f\u96c5\u9ed1\"> Used for connecting three voltage levels, typically applied in regional substations of power systems.<\/span><\/p>\n<h5><span data-font-family=\"\u5fae\u8f6f\u96c5\u9ed1\">4. Classification by Core Structure<\/span><\/h5>\n<p style=\"padding-left: 40px;\"><span data-font-family=\"\u5fae\u8f6f\u96c5\u9ed1\">\u2460 Core-Type Transformers<\/span><\/p>\n<p style=\"padding-left: 40px;\"><span data-font-family=\"\u5fae\u8f6f\u96c5\u9ed1\"> Commonly used for high-voltage power transformers.<\/span><\/p>\n<p style=\"padding-left: 40px;\"><span data-font-family=\"\u5fae\u8f6f\u96c5\u9ed1\">\u2461 Shell-Type Transformers<\/span><\/p>\n<p style=\"padding-left: 40px;\"><span data-font-family=\"\u5fae\u8f6f\u96c5\u9ed1\"> Used for special transformers requiring high-current handling, such as furnace transformers and welding transformers, as well as power transformers for electronic instruments, televisions, and radios.<\/span><\/p>\n<h5><span data-font-family=\"\u5fae\u8f6f\u96c5\u9ed1\">5. Classification by Cooling Method<\/span><\/h5>\n<p style=\"padding-left: 40px;\"><span data-font-family=\"\u5fae\u8f6f\u96c5\u9ed1\">\u2460Oil-Immersed Transformers<\/span><\/p>\n<p style=\"padding-left: 40px;\"><span data-font-family=\"\u5fae\u8f6f\u96c5\u9ed1\"> Include oil-immersed natural air cooling (ONAN), oil-immersed forced air cooling (ONAF), oil-immersed water cooling, forced oil circulation, and water-cooled systems.<\/span><\/p>\n<p style=\"padding-left: 40px;\"><span data-font-family=\"\u5fae\u8f6f\u96c5\u9ed1\">\u2461 Dry-Type Transformers<\/span><\/p>\n<p style=\"padding-left: 40px;\"><span data-font-family=\"\u5fae\u8f6f\u96c5\u9ed1\"> Cooled by natural air convection, typically used for local lighting, electronic circuits, or small-capacity applications.<\/span><\/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\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"<p>Transformers come in many different types, but their working principle is always based on electromagnetic induction. The commonly used classification methods for transformers are summarized as follows: Table of Contents 1. Classification by Application \u2460 Power Transformers Used for voltage step-up or step-down in power transmission and distribution systems; this is the most common type 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The commonly used classification methods for transformers are summarized as follows:<\\\/span><\\\/p>\"},\"elements\":[],\"widgetType\":\"text-editor\"},{\"id\":\"cb27279\",\"elType\":\"widget\",\"settings\":{\"title\":\"Table of Contents\",\"headings_by_tags\":[\"h4\",\"h5\",\"h6\"],\"exclude_headings_by_selector\":[],\"no_headings_message\":\"No headings were found on this page.\",\"header_typography_typography\":\"custom\",\"header_typography_font_family\":\"Arial\",\"header_typography_font_size\":{\"unit\":\"px\",\"size\":20,\"sizes\":[]},\"header_typography_font_weight\":\"600\",\"header_typography_line_height\":{\"unit\":\"px\",\"size\":2,\"sizes\":[]},\"header_typography_word_spacing\":{\"unit\":\"px\",\"size\":0,\"sizes\":[]}},\"elements\":[],\"widgetType\":\"table-of-contents\"},{\"id\":\"9e38bbc\",\"elType\":\"widget\",\"settings\":{\"image\":{\"url\":\"https:\\\/\\\/www.ketetransformer.com\\\/wp-content\\\/uploads\\\/2025\\\/09\\\/dry-type-transformers-30.webp\",\"id\":3572,\"size\":\"\",\"alt\":\"\",\"source\":\"library\"}},\"elements\":[],\"widgetType\":\"image\"},{\"id\":\"9736800\",\"elType\":\"widget\",\"settings\":{\"editor\":\"<h5><span data-font-family=\\\"\\u5fae\\u8f6f\\u96c5\\u9ed1\\\">1. Classification by<\\\/span> Application<\\\/h5>\\n<p style=\\\"padding-left: 40px;\\\"><span data-font-family=\\\"\\u5fae\\u8f6f\\u96c5\\u9ed1\\\">\\u2460 Power Transformers<\\\/span><\\\/p>\\n<p style=\\\"padding-left: 40px;\\\"><span data-font-family=\\\"\\u5fae\\u8f6f\\u96c5\\u9ed1\\\"> Used for voltage step-up or step-down in power transmission and distribution systems; this is the most common type of transformer.<\\\/span><\\\/p>\\n<p style=\\\"padding-left: 40px;\\\"><span data-font-family=\\\"\\u5fae\\u8f6f\\u96c5\\u9ed1\\\">\\u2461 Test Transformers<\\\/span><\\\/p>\\n<p style=\\\"padding-left: 40px;\\\"><span data-font-family=\\\"\\u5fae\\u8f6f\\u96c5\\u9ed1\\\"> Used to generate high voltage for high-voltage testing of electrical equipment.<\\\/span><\\\/p>\\n<p style=\\\"padding-left: 40px;\\\"><span data-font-family=\\\"\\u5fae\\u8f6f\\u96c5\\u9ed1\\\">\\u2462 Instrument Transformers<\\\/span><\\\/p>\\n<p style=\\\"padding-left: 40px;\\\"><span data-font-family=\\\"\\u5fae\\u8f6f\\u96c5\\u9ed1\\\"> Such as voltage transformers (VTs) and current transformers (CTs), used for measuring instruments and relay protection devices.<\\\/span><\\\/p>\\n<p style=\\\"padding-left: 40px;\\\"><span data-font-family=\\\"\\u5fae\\u8f6f\\u96c5\\u9ed1\\\">\\u2463 Special-Purpose Transformers<\\\/span><\\\/p>\\n<p style=\\\"padding-left: 40px;\\\"><span data-font-family=\\\"\\u5fae\\u8f6f\\u96c5\\u9ed1\\\"> Including furnace transformers for smelting, rectifier transformers for electrolysis, welding transformers for arc welding, and variable transformers for test and laboratory use.<\\\/span><\\\/p>\\n<h5><span style=\\\"font-size: 19.2px;\\\">2. Classification by Number of Phases<\\\/span><\\\/h5>\\n<p style=\\\"padding-left: 40px;\\\"><span data-font-family=\\\"\\u5fae\\u8f6f\\u96c5\\u9ed1\\\">\\u2460 Single-Phase Transformers.<\\\/span><\\\/p>\\n<p style=\\\"padding-left: 40px;\\\"><span data-font-family=\\\"\\u5fae\\u8f6f\\u96c5\\u9ed1\\\"> Used for single-phase loads.<\\\/span><\\\/p>\\n<p style=\\\"padding-left: 40px;\\\"><span data-font-family=\\\"\\u5fae\\u8f6f\\u96c5\\u9ed1\\\">\\u2461 Three-Phase Transformers.<\\\/span><\\\/p>\\n<p style=\\\"padding-left: 40px;\\\"><span data-font-family=\\\"\\u5fae\\u8f6f\\u96c5\\u9ed1\\\"> Used in three-phase systems for stepping up or stepping down voltages.<\\\/span><\\\/p>\\n<h5><span style=\\\"font-size: 16px;\\\">3. Classification by Winding Structure<\\\/span><\\\/h5>\\n<p style=\\\"padding-left: 40px;\\\"><span data-font-family=\\\"\\u5fae\\u8f6f\\u96c5\\u9ed1\\\">\\u2460 Autotransformers\\uff1a<\\\/span><\\\/p>\\n<p style=\\\"padding-left: 40px;\\\"><span data-font-family=\\\"\\u5fae\\u8f6f\\u96c5\\u9ed1\\\"> Used for ultra-high-voltage, large-capacity power systems where the voltage ratio change is relatively small.<\\\/span><\\\/p>\\n<p style=\\\"padding-left: 40px;\\\"><span data-font-family=\\\"\\u5fae\\u8f6f\\u96c5\\u9ed1\\\">\\u2461 Two-Winding Transformers.<\\\/span><\\\/p>\\n<p style=\\\"padding-left: 40px;\\\"><span data-font-family=\\\"\\u5fae\\u8f6f\\u96c5\\u9ed1\\\"> Used for connecting two voltage levels in a power system.<\\\/span><\\\/p>\\n<p style=\\\"padding-left: 40px;\\\"><span data-font-family=\\\"\\u5fae\\u8f6f\\u96c5\\u9ed1\\\">\\u2462 Three-Winding Transformers.<\\\/span><\\\/p>\\n<p style=\\\"padding-left: 40px;\\\"><span data-font-family=\\\"\\u5fae\\u8f6f\\u96c5\\u9ed1\\\"> Used for connecting three voltage levels, typically applied in regional substations of power systems.<\\\/span><\\\/p>\\n<h5><span data-font-family=\\\"\\u5fae\\u8f6f\\u96c5\\u9ed1\\\">4. Classification by Core Structure<\\\/span><\\\/h5>\\n<p style=\\\"padding-left: 40px;\\\"><span data-font-family=\\\"\\u5fae\\u8f6f\\u96c5\\u9ed1\\\">\\u2460 Core-Type Transformers<\\\/span><\\\/p>\\n<p style=\\\"padding-left: 40px;\\\"><span data-font-family=\\\"\\u5fae\\u8f6f\\u96c5\\u9ed1\\\"> Commonly used for high-voltage power transformers.<\\\/span><\\\/p>\\n<p style=\\\"padding-left: 40px;\\\"><span data-font-family=\\\"\\u5fae\\u8f6f\\u96c5\\u9ed1\\\">\\u2461 Shell-Type Transformers<\\\/span><\\\/p>\\n<p style=\\\"padding-left: 40px;\\\"><span data-font-family=\\\"\\u5fae\\u8f6f\\u96c5\\u9ed1\\\"> Used for special transformers requiring high-current handling, such as furnace transformers and welding transformers, as well as power transformers for electronic instruments, televisions, and radios.<\\\/span><\\\/p>\\n<h5><span data-font-family=\\\"\\u5fae\\u8f6f\\u96c5\\u9ed1\\\">5. Classification by Cooling Method<\\\/span><\\\/h5>\\n<p style=\\\"padding-left: 40px;\\\"><span data-font-family=\\\"\\u5fae\\u8f6f\\u96c5\\u9ed1\\\">\\u2460Oil-Immersed Transformers<\\\/span><\\\/p>\\n<p style=\\\"padding-left: 40px;\\\"><span data-font-family=\\\"\\u5fae\\u8f6f\\u96c5\\u9ed1\\\"> Include oil-immersed natural air cooling (ONAN), oil-immersed forced air cooling (ONAF), oil-immersed water cooling, forced oil circulation, and water-cooled systems.<\\\/span><\\\/p>\\n<p style=\\\"padding-left: 40px;\\\"><span data-font-family=\\\"\\u5fae\\u8f6f\\u96c5\\u9ed1\\\">\\u2461 Dry-Type Transformers<\\\/span><\\\/p>\\n<p style=\\\"padding-left: 40px;\\\"><span data-font-family=\\\"\\u5fae\\u8f6f\\u96c5\\u9ed1\\\"> Cooled by natural air convection, typically used for local lighting, electronic circuits, or small-capacity 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