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ruye
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樓主  發(fā)表于: 2008-08-20 16:01
生產(chǎn)線(xiàn)的控制柜，引入3相電，其中一相為PLC和直流電源的供電，最近一通電保險就燒掉，不知道為什么。PLC前的濾波器已經(jīng)燒壞已摘除。車(chē)間的變化是最近剛購進(jìn)一臺工作電流150A的點(diǎn)焊機。
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我愛(ài)工控
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1樓  發(fā)表于: 2008-08-23 19:03
典型的短路.直流與交流分開(kāi)查就容易找到的.

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