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mdayan
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樓主  發(fā)表于: 2016-09-27 10:53
我司設備上的明緯直流電源，用萬(wàn)用表測量出直流的正級與交流的零線(xiàn)，地線(xiàn)之間有22V直流電壓，請問(wèn)這是為什么，
wzh-820
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1樓  發(fā)表于: 2016-10-02 22:36
會(huì )不會(huì )是超載了
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