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三相電子表報警燈亮了是什么原因?

2014-09-25

    報警燈亮,說明有問題。發生電流、電壓缺相、反相序、零流、零壓等情況時,報警燈都會亮。最好看一下說明書,一般報警燈亮時,電能表顯示屏上有對應的故障符號顯示,看一下說明書就能知道是啥故障了。

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