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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，
supermax
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1樓  發(fā)表于: 2016-10-03 20:36
圖片：
接好地線(xiàn)就會(huì )消失
[ 此帖被supermax在2016-10-03 20:41重新編輯 ]

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