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hnyyhym
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樓主  發(fā)表于: 2018-11-28 18:06
一根鋁電纜，長(cháng)度200米，經(jīng)過(guò)了橋架，電纜井，現在是不定時(shí)跳開(kāi)關(guān)，用搖表檢測電阻其中二根火線(xiàn)電阻為0，萬(wàn)用表量有十多k電阻，估計是絕緣擊穿且碳化，剛才送電還沒(méi)跳，估計等下又會(huì )跳，大家有沒(méi)有好的辦法找故障點(diǎn)，請暢所欲言，謝謝
靜夜思飄
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1樓  發(fā)表于: 2018-11-29 13:29
如果橋架蓋可以打開(kāi)的話(huà)，用測溫槍。短路的地方一般溫度較高。

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