AB产品MPL-B880C-SJ72AA

MPL-B880C-SJ72AA

当本相电流不平衡时，首先应检查电源电压的平衡情况，检查绕组是否有相间、匝间或对地短路故障，而后检查绕组的接线符合性：

——各相绕组的首尾端是否有接错的问题；

——各个线圈或极相组的极性是否接反；

——每极每相槽数是否相等或按规律分组；

——有没有线圈漏接、断线或焊接不良，以及一相绕组接到另一相的情况。

如果某相绕组个别极相组或线圈是否接反，可将低压直流电（电流大小只要能使指南针产生偏转就行）通入某相绕组，用指南针沿铁心圆周逐槽检查，如果在每个极相组上指南针的指示方向依次改变，改变次数等于电机极数，则表示接线正确，反之，则表明某极相组接线有问题。如果在同一极相组的邻近几槽，指南针的方向也改变，说明该极相组个别线圈嵌反。

GE General Electric 8000 Line Size 3 Motor Control 

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