VKM-12 Series Permanent Magnet Indoor High Vvoltage Vacuum Circuit Breaker
overview
VKM-12 permanent magnet indoor high-voltage vacuum circuit breaker is an indoor switchgear for a three-phase AC 50Hz rated voltage of 12kV power system. It is used as a protection and control unit for power grid equipment and industrial and mining enterprise power equipment. It is suitable for places requiring frequent operation under rated working current, or breaking short-circuit current several times.
The circuit breaker adopts an integrated design of the operating mechanism and the circuit breaker body, which can be used as a fixed installation unit or equipped with a special propulsion mechanism to form a handcart unit.
Model and meaning
This type of product is equipped with a bistable permanent magnet operating mechanism. The mechanism is equipped with a permanent magnet. The permanent magnet provides the holding force to keep the switch in the closed and open state. Compared with the conventional spring operating mechanism, the number of mechanism parts is greatly reduced. The transmission chain of the mechanism is shortened, so that the reliability of the switch is greatly improved, and the service life of the mechanism is greatly increased.
