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中压断路器 无论是户内还是户外,七十年代是油断路器以及空气断路器占主导地位。八十年代前期,SF_6断路器(旋弧式、压气式)比真空断路器更早进入电力系统,但由于密封问题的困扰,迟迟没有能扩大市场,只有户外罐式压气式SF_6断路器(LW8—40.5kV)站住了脚,并不断发展。八十年代末,引进了西门子真空断路器,并获
Medium voltage circuit breakers Whether indoor or outdoor, the oil circuit breakers and air circuit breakers dominated the 1970s. In the early 1980s, the SF_6 circuit breaker (spinning type, air pressure type) entered the power system earlier than the vacuum circuit breaker, but due to the problems of sealing, it was not able to expand the market. Only the outdoor tank type air pressure type SF_6 circuit breaker ( LW8-40.5kV) stood and continued to develop. In the late 1980s, Siemens vacuum circuit breakers were introduced and acquired