KYN61-40.5 Metal-clad AC enclosed Switchgear Withdrawable Type
KYN61-40.5 AC Metal-Clad Withdrawable Switchgear (hereinafter referred to as "switchgear") is designed for three-phase AC 50Hz, 40.5kV single busbar & segmented busbar systems. It is primarily deployed in:Power plants and substations, Industrial/mining enterprises, High-rise building power transformation/distribution system.
Specification Parameter
| Main technical parameters | |||||
| Technical parameter of switch cabinet | |||||
| No. | Item | Unit | Parameter | ||
| 1 | Rated Voltage | kV | 40.5 | ||
| 2 | Rated Frequency | Hz | 50 | ||
| 3 | Rated Current of Main Bus-bar | A | 1250,1600,2000,2500 | ||
| 4 | Rated Current of Branch Bus-bar | A | 630,125,1600 | ||
| 5 | Rated Insulation Level | 1min Power Frequency Withstand Voltage (r.m.s.) Lightning Impulse Withstand Voltage (Peak) | kV | Phase-to-Phase and Phase-to-Earth | Isolation Gap of Primary Circuit |
| Interphase&phase to ground | Primary separation fracture | ||||
| 95 | 115 | ||||
| 185 | 215 | ||||
| 1min Power Frequency Withstand Voltage of Auxiliary and Control Circuits | V | 2000 | |||
| 6 | Rated Short-Circuit Breaking Current | kA | 25,31.5 | ||
| 7 | Rated Short-Circuit Making Current (Peak) | kA | 63,80 | ||
| 8 | Rated Short-Time Withstand Current (4s) | kA | 25，31.5 | ||
| 9 | Rated Peak Withstand Current | kA | 63，80 | ||
| 10 | Auxiliary/Control Circuit Voltage | V | -110,-220，-220 | ||
| 11 | Protection degree | Enclosure Protection Level Main Compartments: IP4X (Sealed against ≥1mm solids) Breaker Chamber (Door Open): IP2X (Finger-safe protection) | |||
| 12 | Dimension(W×D×H) | mm | ("the number in parenthesis is scheme of SF6 trolley) | ||
| 13 | Weight | kg | Approximated 2300 | ||
Product Advantage
Compact & Robust Design
·Utilizes heat-shrink insulation and epoxy coating technology with optimized electrode geometry
·40% smaller footprint vs. conventional switchgear
Precision Manufacturing
·Enclosures constructed from cold-rolled steel via CNC machining
·High-strength bolted/riveted assembly with anti-corrosion finish (powder-coated or galvanized)
Multi-Brand Compatibility
·Supports both domestic and international breakers:
✓ ZN85-40.5 (3AV3) vacuum circuit breakers (China)
✓ Schneider SF1/SF2 & Alstom FP series SF6 circuit breakers
Enhanced Safety Architecture
·Full metal compartmentalization with independent pressure relief channels
·Closed-door operation for breakers/earthing switches
·198+ scalable configurations to meet diverse grid requirements
Certified Protection System
·Integrated mechanical interlocks between:
» Withdrawable truck
» Circuit breaker
» Earthing switch
» Rear panel
·Full "Five-Protections" safety compliance
Outline And Mounting Dimensions
