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ao890
ao890
单相电机有3根线,分别需要接火线、零线和启动电容,那么正转怎么接?反转又怎么接?今天我们来分享一下
①接单相电机,公共端接零线
②剩下的2根线是电容端接电容,火线接在电容端的其中一根线上,一根是正转一根是反转,正反转是通过倒换电容端的这2根线来实现的
怎么找出单相电机的电容端:
①单相电机内部有2组绕组,分别为主绕组和副绕组,电容端是串联的主绕组和副绕组,所以电容端的电阻值是大的
②单相电机有3根线,分别为红色、黄色和黑色,这3根线黑色为公共端,红色和黄色为电容端
③不确定哪2根线是电容端怎么办?其实判断方法特别简单,电容端的电阻值是大的,所以用万用表的电阻档,分别测量一下这3根线,线和线之间的电阻值,例如电机黄色电线和黑色电线的电阻值,黄色电线和红色电线的电阻值,红色电线和黑色电线的电阻值,电阻值大的2根电线就是电容端,那么这2根线就接启动电容
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