ZW20-12F Outdoor High Voltage Vacuum Circuit Breaker

Overview

ZW20-12FT series outdoor high-voltage vacuum circuit breakers (hereinafter referred to as circuit breakers) are outdoor power distribution equipment with a rated voltage of 12kV and three-phase AC 50Hz. It adopts vacuum arc extinguishing and SF6 gas as insulating medium, and is an improved product of ZW2O-12F type vacuum circuit breaker on column. The box body adopts the gas sealing, explosion-proof and insulating structure technology imported from Toshiba Corporation of Japan, and the sealing performance of the inlet and outlet conduits is also improved. The overall sealing performance is excellent, and the SF6 gas filled inside does not leak and is not affected by the environment; Its spring operating mechanism has been miniaturized and optimized for reliability and stability. It adopts direct-acting chain main drive and multi-stage tripping system, and its action reliability and stability are several times higher than that of traditional domestic spring operating mechanisms; the main circuit The contact between the shaft and the sleeve adopts an inward and outward tensioned bracelet structure, and the contact resistance of the main circuit is small and the temperature rise is low. Therefore, ZW20-12F outdoor column vacuum circuit breaker is a maintenance-free product, and it is the best product among column circuit breakers.

Compared with ZW20-12F, ZW20-12F also adds overcurrent protection, mechanism spring energy storage indication, and is equipped with aviation socket for secondary electrical connection, which is easy to combine with intelligent controller. Excellent electrical and mechanical properties make ZW20-12F outdoor column vacuum circuit breaker widely used. It is mainly used for breaking and closing the load current and short-circuit current of 10kV power system. It is suitable for protection and control in the power distribution system of substations and industrial and mining enterprises, and is more suitable for places where the power grid is frequently operated. This product is matched with the controller, has excellent recloser function, and can meet the requirements of distribution automation system.

Model meaning