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工控學(xué)習
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樓主  發(fā)表于: 2012-03-27 19:48
諸位老師你們好，在一大功率電機保護電路中，通常有兩個(gè)互感器測量?jì)上嘀麟娐返碾娏髋浜蠠崂^電器和電流表進(jìn)行過(guò)載保護。那么這兩個(gè)互感器應該串聯(lián)后再與熱繼電器.電流表連接呢，還是并聯(lián)后再與熱繼電器.電流表連接呢？
辛勤蜜蜂
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1樓  發(fā)表于: 2012-03-28 20:33
電流互感器接電流表！s2端要接地！看好電動(dòng)機的額定電流選擇FR，將FR調到電動(dòng)機的額定電流！這樣也能起到保護！

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