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lixiaoyun
人在江湖
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樓主  發(fā)表于: 2011-05-07 11:16
各位高手，我今天遇到一臺變頻器控制的三相變速電機，在變頻器上啟動(dòng)后電機并不運轉，要用手拉動(dòng)一下皮帶才可正常運轉，而且是往前拉它向前運轉，往后拉它則會(huì )向后運轉，測電機三相電阻沒(méi)有問(wèn)題，請問(wèn)這是哪里出了問(wèn)題
江湖好學(xué)士
匯榮鋁業(yè)
級別: 網(wǎng)絡(luò )英雄

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1樓  發(fā)表于: 2011-05-07 11:46
樓主你這樣試試，把變頻器拿掉，給電機直接接上三相380的電，如果還像你說(shuō)的那樣用手攀一下才轉的話(huà)，那電機就是缺相了（小功率電機會(huì )這樣）。如果上電就轉，換相序可以反轉，那就的查變頻器了。
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