HV Switchgear
Summary
The KYN61-40.5 armored removable AC metal-enclosed switchgear is an indoor high-voltage power distribution device suitable for three-phase AC power systems with a rated voltage of 40.5kV and a rated frequency of 50Hz. It is primarily used for receiving and distributing electrical energy, as well as for controlling, protecting, and monitoring power circuits. This switchgear is widely applied in power plants, substations, industrial and mining enterprises, and high-rise buildings.
The product complies with GB3906-2006 "3.6kV~40.5kV AC Metal-Enclosed Switchgear and Controlgear" and meets the IEC62271-200 standard.
Structural Characteristics
- The switchgear features a metal-enclosed, compartmentalized structure with reliable interlocking mechanisms between individual compartments, ensuring operational safety;
- The circuit breaker trolley is equipped with a racking mechanism featuring a reliable position indicator and locking device, ensuring accurate positioning in both the "connected" and "disconnected/test" positions;
- The primary circuit employs advanced insulating materials, providing excellent insulation performance and high operational reliability;
- The secondary circuit uses modular terminal blocks for simplified wiring, enabling convenient maintenance and troubleshooting;
- The enclosure protection rating reaches IP4X, effectively preventing the ingress of solid foreign objects and providing a safe operating environment for personnel.
Standards Compliant
- GB3906-2006 3.6kV–40.5kV AC Metal-Enclosed Switchgear and Controlgear;
- IEC62271-200 High-Voltage Switchgear and Controlgear – Part 200: AC Metal-Enclosed Switchgear and Controlgear for Rated Voltages Above 1kV and Up to and Including 52kV;
- GB/T11022-2011 Common Specifications for High-Voltage Switchgear and Controlgear Standards;
- GB4208-2017 Degrees of Protection Provided by Enclosures (IP Code).
Technical Parameter
- Rated voltage: 40.5kV;
- Rated insulation level: 1min power-frequency withstand voltage 95kV (phase-to-phase, phase-to-ground); lightning impulse withstand voltage 185kV (peak);
- Rated current: Main busbar 1250A–2500A, branch busbar 630A–1250A;
- Rated frequency: 50Hz;
- Rated short-time withstand current: 25kA/31.5kA (4s);
- Rated peak withstand current: 63kA/80kA;
- Enclosure protection rating: IP4X.
Application
- Indoor installation;
- Altitude: ≤1000m (special orders available for altitudes >1000m);
- Ambient temperature: -15℃ to +40℃;
- Relative humidity: Daily average ≤95%, monthly average ≤90%;
- Seismic intensity: ≤8°;
- Environment: No fire or explosion hazards, no corrosive gases, no severe dust or vibration.
