Secondary Switchgear

The KYN28A-12 secondary switchgear is designed for controlling, protecting and supervising circuits. This power distribution product  is suitable for situations with heavy power loads, like industrial, mining, power plant, and substation operations.

This secondary switchgear is made up of two parts: a cabinet body and extractable part. The ingress protection class of cabinet body is IP4X, and it will be IP2X when the door is opened. Its protection can prevent the intrusion of dust and dirt and has an anti-condensation function. Our secondary switchgear is equipped with insulating vacuum circuit breaker and has an inspection window in the cabinet body, so you can directly see the working state of its inner components.

Zhenwei also provides customized secondary switchgears to meet your special requirements. Contact us to learn more.

Parameters

Rated voltage: 3.6/7.2/12KV;
Rated frequency: 50HZ;
Circuit breaker rated current: 630/1250/1600/2000/2500/3150/4000A;
Switchgear rated current: 630/1250/1600/2000/2500/3150/4000A;
Rated short-time withstand current(4s): 16/20/25/31.5/40/50KA;
Rated peak withstand current(peak): 40/50/63/80/100/125KA;
Rated short-circuit breaking current: 16/20/25/31.5/40/50KA;
Rated short-circuit making current(peak): 40/50/63/80/100/125KA.

Normal Operating Conditions Ambient Temperature: -15℃—+40℃; Humidity:
Daily average relative humidity: ≤95%, daily average water vapor pressure≤2.2kPa;
Monthly average relative humidity: ≤90%, monthly average water vapor pressure≤1.8kPa; Altitude: ≤4000m; Seismic intensity: ≤8; Environment without combustible and explosive danger, and corrosive atmosphere. Environments without severe vibration; When your environment is beyond the range of normal operating conditions specified by GB3906, please consult the equipment manufacturer;