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Police, body of officers representing the civil authority of government. Police typically are responsible for maintaining public order and safety, enforcing the law, and preventing, detecting, and investigating criminal activities. Police are often also entrusted with various
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33KV 35KV Triple Pole 630A SF6 Gas Circuit Breaker, US $ 3000 5000 / Piece, Zhejiang, China, Boerstn, PGC 40.5.Source from Boerstn Electric Co., Ltd. on Alibaba. The circuit breaker is provided with Local/Remote selector switch. The selection of the
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2018/7/17Industrial production of SF 6 gas started in the United States in 1947, and the application for gas insulated switchgear with SF 6 was first attempted in 1953. A manufacturer in the United States, Westinghouse, produced the first SF 6 gas circuit breaker in the world in 1959.
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