HIGH VOLTAGE SWITCHGEAR

Five defenses of high voltage switchgear

1. After the vacuum circuit breaker trolley in the high-voltage switch cabinet is closed at the test position, the trolley circuit breaker cannot enter the working position. (to prevent closing with load)
2. When the grounding knife in the high-voltage switch cabinet is in the closing position, the trolley circuit breaker cannot enter the working position to close. (Prevent closing with ground wire)
3. When the vacuum circuit breaker in the high-voltage switch cabinet is closed, the front and rear doors of the panel cabinet are locked with the machine on the grounding knife and the cabinet door. (To prevent entering the live interval by mistake)
4. The vacuum circuit breaker in the high-voltage switch cabinet is closed during operation, and the grounding knife cannot be closed and put into operation. (Prevent live and ground wire)
5. When the vacuum circuit breaker in the high-voltage switch cabinet is closed and running, it cannot exit the working position of the trolley circuit breaker. (To prevent the knife switch with load)

Classification of high voltage switchgear

Circuit breaker installation method
According to the installation method of the circuit breaker, it is divided into removable type (handcart type) and fixed type
Installation Location
Divided into indoor and outdoor according to the installation location
Cabinet structure

According to the cabinet structure, it can be divided into four categories: metal-enclosed armored switchgear, metal-enclosed partition switchgear, metal-enclosed box-type switchgear and open switchgear.

Metal-enclosed switchgear installed in grounded compartments separated by metal partitions. Such as KYN28A-12 high-voltage switchgear.