40.5kV Removable Metal-Enclosed Switchgear Manufacturer

40.5kV Removable Metal-Enclosed Switchgear

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Standards: GB/T 3906, IEC 298

The KYN61-40.5 armored withdrawable AC metal-enclosed switchgear (KYN61-40.5 high voltage switchgear) is suitable for three-phase AC 50Hz 40.5kV single busbar and single busbar sectionalized power systems. It is primarily used for power transformation and distribution in power plants, substations, industrial and mining enterprises, and high-rise buildings, serving to receive and distribute electrical energy, as well as to control, protect, and monitor circuits.

Technical Specifications

Nominal Voltage (kV): 35

Rated Voltage (kV): 40.5

Rated Current (A): 1250

Rated Frequency (Hz): 50

One-Minute Power-Frequency Withstand Voltage (kV): 95/110

Lightning Impulse Withstand Voltage (kV): 185/215

Rated Short-Time Withstand Current (kV): 25/31.5

Rated Peak Withstand Current (kA): 63/80

Operation Mechanism: Spring

Mechanical Life (times): 10,000

IP Class: Shell IP44 (compartments door open is IP22)

Operating Conditions

Maximum Ambient Temperature: 60℃

Minimum Ambient Temperature: -40℃

Relative Humidity: Daily average ≤95%, monthly average ≤90%

Seismic Grade: 8

Operating Altitude: ≤1000 meters above sea level

Note: Contact HCRT if a different condition is required. We offer customized solutions as well.

Features

Robust Construction: The switchgear cabinet is manufactured from high-quality cold-rolled steel plates processed by CNC sheet metal forming and connected with high-strength bolts, nuts, and rivet nuts. Component surfaces are finished with powder coating or galvanizing.

Versatile Circuit Breaker Compatibility: Can be equipped with domestic ZN85-40.5 vacuum circuit breakers, as well as French Schneider SF1, SF6 type, and Alstom FP series SF6 circuit breakers to meet diverse user needs.

Compartmentalized Design: Each functional compartment within the switchgear is separated by metal partitions and features an independent pressure relief channel.

Safe Operation: The operation of the circuit breaker, grounding switch, and other components can be performed with the switchgear door closed, ensuring safe "closed-door operation."

High Structural Adaptability: The switchgear structure offers strong adaptability with over 198 main structure configurations available to cater to different user requirements.

Enhanced Safety Interlocks: Mechanical interlock devices between the handcart (trolley), circuit breaker, grounding switch, and rear cabinet door prevent misoperation, providing comprehensive "five-prevention" functionality for safe and reliable operation.