An overview of the

KYN28-12 indoor metal armoured open switch equipment is mainly used in power plants, industrial and mining enterprises and power distribution as well as the electric power system secondary substation by electricity, transmission and large high voltage motor starting, etc., the control protection, monitoring purposes. This device can be widely used in various industrial and mining enterprises, Marine, power station, underground facilities and municipal construction such as high-rise buildings, as a three-phase ac 50 hz, rated voltage 3-12 kv power supply in the system, feed and power control. The switchgear meet DL/T404-91, IEC298, GB3906 standard requirements, prevent the loading of push-pull circuit breaker handcart, prevent or circuit breaker, to prevent the earthing switch is in the closed position close breaker, avoid straying into charged compartment, prevent in charged by mistake in the interlock function such as grounding switch. But with VS1 and VD4 vacuum circuit breaker.

The main technical parameters

Rated voltage (KV) : 3.2, 6.3, 12

Power frequency withstand voltage (KV / 1 min) : 42

Lightning impulse withstand voltage (KV) : 75

Rated current (A) : 630-630

Rated short-time resistance current (KA) : 16, 20, 25, 31.5, 40

The rated current peak tolerance (KA) : 40, 50, 63, 63, 80

Rated frequency (Hz) : 50

Enclosure protection grade: IP4X,