line vacuum circuit-breaker
... 主断路器 line circuit-breaker 真空主断路器 line vacuum circuit-breaker 空气主断路器 line air-blast circuit-breaker ...
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选用四星型MOA作为限制真空断路器操作过电压的主保护器，效果十分明显。
The effect was obvious to select four-star connection MOA was a main protector to limit overvoltage in operation of a vacuum disconnector.
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