因此,如果做出选择,为了得到可靠的断路器失灵动作,水平必须总是高于监测启动水平。这也可能发生在-一个半开关或环形母线结构中,在那些情况下第-个断路器合于,保护跳闸并且试图起动第二个断路器的失灵保护,而第二个断路器在合闸过程当中,但还没有电流流过它。
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Reliance Electric 0-57404-K/57404/57404-K/57404K
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RELIANCE ELECTRIC 0-51847-2 USPP 0518472
RELIANCE ELECTRIC 0-51847-4 USPP 0518474