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ZW20-12F Primary and secondary fusion outdoor high voltage vacuum circuit breaker

ZW20-12F Primary and secondary fusion outdoor high-voltage vacuum circuit breaker for rated voltage 12kV, three-phase AC 50Hz outdoor distribution equipment. It adopts vacuum arc extinguishing and SF6 gas as the insulating medium, and is an improved product of ZW20-12F type column vacuum circuit breaker. The box adopts the gas sealing, explosion-proof and insulation structure technology introduced by Toshiba VSP5, and the sealing performance of the inlet and outlet pipe is also improved. The overall sealing performance is excellent, and the SF6 gas filled inside is not leaked and is not affected by the boundary environment. Its spring operating mechanism has been miniaturized design and reliability and stability optimization, using direct chain main transmission and multistage tripping system, the operating reliability and stability are several times higher than the traditional spring operating mechanism in China; The contact between the shaft and the sleeve of the main loop adopts the

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