ci840a
ci840a
测量绕组的电阻大小来判断是高速绕组还是低速绕组，阻值小的应该是高速绕组，阻值大的是低速绕组。在没有标识的情况下 ，可以用电阻法确定那边为高速侧那边为低速侧。单边三个接线端子测量电阻值 ，阻值大的为低速侧，既U1、V1、W1；阻值小的为高速侧，既U2、V2、W2。
低速时U1、V1、W1接电源，U2、V2、W2不接为断开状态；高速时U2、V2、W2接电源，U1、V1、W1短接。低速三角形接发。高速双星接法。
双速电机高低速接线图
双速电动通过外部端子接线实现不同连接方式来改变定子绕组磁极对数来实现不同转速的。双速电机内部有两套绕组。可以通过改变不同绕组实现调速。不同绕组的极对数是不同的。
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