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jupeigang
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樓主  發(fā)表于: 2012-10-14 13:04
我公司有一老設備，電動(dòng)機為30KW，原來(lái)是星三角啟動(dòng)，現在想改用變頻器，想問(wèn)一下改用變頻器后電流應該為多大左右，比原來(lái)的電流要小多少（負載在一樣的情況下）？
xfxcy
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1樓  發(fā)表于: 2012-10-14 19:40
引用
引用第5樓jupeigang于2012-10-14 19:36發(fā)表的  :
負載一樣的情況下（滿(mǎn)負荷），用了變頻器和不用變頻器電流是一樣的嗎？

當然，用變頻器運行在50HZ,和不用變頻器，電流是一樣的。用變頻器只是啟動(dòng)電流小，可減少對電網(wǎng)沖擊。

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