KYN61-40.5 Armored Removable AC Metal Enclosed Switchgear
Overview
The KYN61-40.5 armored withdrawable AC metal-enclosed switchgear adopts a modular design and is suitable for three-phase AC 50/60Hz systems with a rated voltage of 40.5kV. It complies with IEC 62271-200 and GB 3906 standards. Designed for power system distribution, substations, industrial and mining enterprises, and other applications, this product offers high reliability, strong safety protection, and easy maintenance. It is suitable for controlling, protecting, measuring, and monitoring power systems up to 40.5kV.
Brief Introduction
Ⅰ.Brief introduction
1.Rated Voltage: 40.5kV
2.Rated Current: 1250A–3150A
3.Applicable Standards: IEC 62271-200, GB 3906, DL/T 404
4.Protection Level: IP4X (Enclosure) / IP2X (Compartments)
Ⅱ.Applicable Conditions and Scope
1.Altitude: ≤2000m
2.Ambient Air Temperature: Maximum +40°C, Minimum -15°C
3.Relative Humidity: Daily Average ≤95%, Monthly Average ≤90%
4.Environment: Not suitable for severely corrosive, polluted, flammable gas, or highly vibrating locations
5.Seismic Conditions: Seismic intensity shall not exceed 8 degrees
Ⅲ.Component Testing
1.Key components (circuit breakers, interlocking mechanisms) 100% fully inspected
2.Main Busbar: T2 Copper (Conductivity ≥98%)
3.Enclosure: Baosteel Cold-Rolled Steel Plate (Thickness ≥2mm) + Epoxy Resin Spray (Salt Spray Test 1000h)
Product Features
Ⅰ.Feature Introduction
1.Fully Enclosed Armored Structure: Made of 2.0mm thick galvanized steel plate and 3.0mm thick stainless steel plate composite, passing the nationally certified internal arc fault test (IAC AFLR 31.5kA/1s)
2.Modular Combination: Standard compartment width of 800mm, allowing independent modular assembly of circuit breaker chamber, busbar chamber, and cable chamber
3.Visual Design: Equipped with double-layer explosion-proof viewing windows for direct observation of circuit breaker status
4.Five Protection Interlocks: Mechanical + electrical dual interlocking, certified by national authoritative institutions
5.Grounding System: Equipped with visible grounding switches to ensure maintenance safety
6.Protection Level: IP4X (Enclosure) / IP2X (Compartments)
Ⅱ.Product Advantages
1.Arc Protection: Passes internal arc fault tests, ensuring personnel safety within the obstacle range
2.Insulation Performance: Uses composite insulation technology, reducing volume by 30% compared to traditional equipment
3. Operational Safety: Mechanical life up to 10,000 cycles, electrical life up to 5,000 cycles
4.Modular Design: Key components feature quick-change structures, reducing average repair time by 60%
5.User-Friendly Operation: Equipped with electric chassis car, operational force less than 100N
6.Maintenance Convenience: Spacious maintenance space, supports rear door opening for easier maintenance
7.Wide Temperature Operation: Operates normally in environments from -35°C to +55°C
8.High Altitude Operation: No capacity reduction at altitudes up to 4000m
9.Corrosion Resistance: Passes 1000-hour salt spray test, suitable for coastal areas
Ⅲ.Benefits Provided by the Product
1.Reduces inspection personnel by 50%
2.Preventive maintenance replaces post-accident repairs, saving over 30% in annual maintenance costs
3.Low-resistance design saves approximately 8,000 kWh per year
4.Reduces power outage losses and improves power supply reliability
5.Personnel Safety: Eliminates the possibility of misoperation, protecting operational staff
6.Equipment Safety: Early warning system detects potential faults 7 days in advance, avoiding major accidents
7.Grid Safety: Quickly isolates faults, minimizing the scope of power outages
8.Real-time equipment status monitoring for more accurate decision-making
9.Automatically generates operational reports, reducing manual statistics
10.Expert remote diagnostics for quick problem resolution
11.Reduces on-site service frequency and improves response speed
Product structure
Ⅰ.Sheet Metal Processing Technology
1.Laser Precision Cutting
2.Uses 6000W fiber laser cutting machine with accuracy of ±0.1mm
3. Material utilization rate reaches 92%, reducing material waste
4.CNC Bending Forming
5.12-axis CNC bending machine with angle accuracy of ±0.5°
6.R-angle forming process eliminates stress concentration
Ⅱ.Surface Treatment Process
| Process | Technical Parameters | Quality Requirements |
|---|---|---|
| Degreasing | 8 processes | Surface oil ≤0.5g/m² |
| Phosphating | Zinc Phosphating | Coating weight 2.5-3.5g/m² |
| Electrostatic Spraying | Epoxy Resin Powder | Thickness 80-120μm |
| High-Temperature Curing | 180°C/30min | Adhesion level 0 |
Ⅲ.Assembly Process
1.Modular Pre-Assembly
2. Uses jigs and fixtures for positioning with repeat positioning accuracy of 0.05mm
3.Digital control of bolt torque (error ±2%)
4.Busbar Processing
5.CNC busbar processing center with accuracy of ±0.1mm
6.Silver plating (thickness ≥8μm)
Ⅳ.Insulation Treatment Process
1.Vacuum Pressure Impregnation
2.Epoxy resin vacuum casting (vacuum degree ≤10Pa)
3.ntelligent control of curing temperature curve (±1°C accuracy)
4.Partial Discharge Control
5.Partial discharge ≤5pC (standard requirement ≤10pC)
Specification
Ⅰ.Switchgear Technical Parameters
| Item | Parameters |
|---|---|
| Rated Voltage | 40.5kV |
| Rated Current | 1250A–3150A |
| Rated Short-Circuit Breaking Current | 25kA–31.5kA |
| Power Frequency Withstand Voltage (1min) | 95kV |
| Lightning Impulse Withstand Voltage | 185kV |
| Protection Level | IP4X (Enclosure) / IP2X (Compartments) |
| Applicable Standards | IEC 62271-200, GB 3906, DL/T 404 |
Ⅱ.Circuit Breaker Technical Parameters
| Parameter Item | Technical Specifications |
|---|---|
| Model | VS1 / VD4 (Optional) |
| Rated Voltage | 40.5kV |
| Rated Current | 1250A / 1600A / 2000A |
| Rated Short-Circuit Breaking Current | 50kA/63kA / 31.5kA |
| Rated Short-Time Withstand Current | 50kA / 63kA (4s) |
| Mechanical Life | 10,000 cycles (Maintenance-Free) |
When using KYN61-40.5 armored withdrawable AC metal-enclosed switchgear, you may want to know the following questions & answers.
Ⅰ.Basic Product Questions
1.What is the rated voltage and current range of the KYN61-40.5 switchgear?
The rated voltage is 40.5kV, and the rated current ranges from 1250A to 3150A (customizable up to 4000A).
2.What is the protection level? Can it be used for outdoor installation?
The enclosure protection level is IP4X, and the compartment protection level is IP2X. It is suitable for indoor environments. Outdoor installation requires adding a rain shield (protection level can be upgraded to IP54).
Ⅱ.Structure and Operation Questions
1. Is the operation of the trolley complex? How to ensure safety?
The trolley is designed as a lightweight track system, operable by a single person, equipped with three-position mechanical interlocks (working/test/separation) to forcibly prevent misoperation.
2.What are the specific functions of the five protection interlocks?
①Prevents accidental opening and closing of the circuit breaker
②Prevents moving the handcart under load
③Prevents closing the grounding switch while energized
④Prevents powering on when the grounding switch is closed
⑤Prevents accidental entry into live compartments
Ⅲ.Maintenance and Troubleshooting
1.What steps are required for routine maintenance?
①Monthly: Check the cabinet sealing and remove dust
②Semi-Annually: Test mechanical interlock functions and lubricate rails
③Annually: Measure main circuit contact resistance (recommended ≤50μΩ)
2.What should be done in case of an internal arc fault?
The cabinet has passed the IAC-level internal arc test. In case of a fault:
The pressure release channel automatically releases pressure
Immediately cut off the upstream power supply
Contact after-sales personnel for inspection (do not open the cabinet yourself)
Ⅳ.Selection and Customization
1.Is it compatible with circuit breakers from other brands?
It supports standard circuit breakers such as VS1 (domestic) and VD4 (ABB technology). Please inform the model in advance to adjust the mechanical interface.
2.How can intelligent monitoring functions be added?
Standardized interfaces are reserved for later installation of:
Wireless temperature sensors (6 points per cabinet)
Partial discharge monitoring modules
Online mechanical characteristic analyzers
Why Choose us ？
Built to last, engineered to perform.
Kete Transformer is a key national-level manufacturer specializing in transformers, recognized as a “Contract-Honoring and Promise-Keeping” enterprise, a high-tech enterprise, and a national-level enterprise technology center. It is recommended in the national directory for rural and urban power grid construction and renovation, as well as a recommended supplier of major electromechanical equipment for hydropower projects. Its products have been awarded the title of “National Quality Inspection Qualified Product – Quality Trustworthy Product” and “Nationally Recognized Product for Mechanical Industry Users.
Our Project
Our products not only dominate the domestic market but are also exported to more than 30 countries and regions, including Russia, Southeast Asia, Africa, and the Americas, serving industries such as power, municipal engineering, metallurgy, and petrochemicals.
