The KYN61-40.5 metal-clad withdrawable AC metal-enclosed switchgear is suitable for three-phase AC 50Hz power systems. It is primarily used for receiving and distributing electrical energy and is widely applied in the power distribution segments of power systems. This switchgear is commonly installed in substations, switching stations, and distribution rooms, serving as incoming, outgoing, bus sectionalizing, metering, and reactive power compensation units at the 35kV voltage level. It enables efficient power reception, distribution, control, and protection.

It is also suitable for self-contained substations in large-scale industrial facilities such as steel plants, chemical factories, and cement plants, as well as in industrial parks, where it manages the connection of high-voltage power sources and controls the power supply to internal high-voltage equipment such as large motors and transformers.

The core functions of the KYN61-40.5 revolve around control, protection, isolation, and monitoring within the power system. It is equipped with a complete set of five-interlock safety mechanisms, including:

Prevention of incorrect circuit breaker operation;

Prevention of isolating switch operation under load;

Prevention of grounding when the circuit is live;

Prevention of circuit closing when grounding is in place;

Prevention of unauthorized access to live compartments.

These interlocks, implemented through mechanical or electrical means, strictly regulate operation procedures and effectively eliminate risks of human error and ensure operational safety.

Technical Parameters

Rated Voltage: 40.5 kV
Rated Current：2500A

Rated Frequency: 50 Hz

Short-Time Withstand Current: 31.5 kA / 4s

Protection Degree:

Enclosure: IP4X

Compartment Interior: IP2X