ZN85-40.5 Series Indoor High Voltage Vacuum Circuit Breaker

ZN85-40.5/T2000-31.5 type indoor high voltage vacuum circuit breaker (hereinafter referred to as circuit breaker), suitable for three-phase AC 50Hz. In the power system with rated voltage of 40.5KV, it can be used for industrial and mining enterprises, power plants and substations to divide load current, overload current and fault current. The circuit breaker and the operating mechanism are arranged up and down, which effectively reduces the depth of the circuit breaker. The three-phase interrupter and the connected charged body are separated by three independent epoxy resin insulation cylinders, forming a composite insulation structure. The circuit breaker meets the requirements of air distance and creepage distance under normal operating conditions, and effectively reduces the volume of the circuit breaker. The main electric circuit vacuum interrupter and the dynamic and static conductive connection are installed in the insulation cylinder, so that the phase spacing is only 300mm. The main circuit electrical connections are all fixed connections, with high reliability. The insulation cylinder is installed above the circuit breaker frame. The spring operating mechanism specially designed for this new type of circuit breaker is installed in the circuit breaker frame, and its structural characteristics are more suitable for the vacuum circuit breaker to be an integral part of the overall structure of the circuit breaker. The mechanism design is simple, and the output curve is more suitable for the characteristics and requirements of 40.5KV vacuum circuit breaker. The overall layout is reasonable, beautiful and simple. Small size, flexible operation, with reliable electrical performance, long service life, easy maintenance, maintenance free mechanism features. The circuit breaker is suitable for frequent operation and a variety of occasions and places with harsh operating conditions.