Overview
ZW20-12F/T □ - □ series outdoor high-voltage vacuum circuit breaker (hereinafter referred to as circuit breaker) is an outdoor power distribution equipment with rated voltage of 12kV and three-phase AC 50Hz. It uses vacuum arc extinguishing and SF6 gas as the insulating medium, and is an improved product of ZW20-12F column vacuum circuit breaker. The box adopts the gas sealing, explosion-proof and insulated structure technology of VSP5 introduced from Toshiba of Japan, and the sealing performance of the inlet and outlet conduits has also been improved, the overall sealing performance is excellent, and the SF6 gas filled inside does not leak and is not affected by the personal environment; Its spring operating mechanism has been miniaturized and optimized for reliability and stability, and the direct chain main drive and multi-stage trip system are adopted, and the action reliability and stability are several times higher than that of the traditional spring operating mechanism in China. The contact between the shaft and the sleeve of the main circuit adopts the inward and external tension type 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, which is the best product in column circuit breaker.
Compared with ZW20-12F, ZW20-12F also adds over-current protection, mechanism spring energy storage indication, and is equipped with aviation socket for secondary electrical connection, which is convenient 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 the 10kV power system, and is suitable for protection and control in the power distribution system of substations and industrial and mining enterprises, and is more suitable for places with frequent operation of the power grid. This product is matched with the controller, has excellent recloser function, and can meet the requirements of distribution automation system.
Model Meaning
