电动机三相空载电流超过额定电流的5倍是什么原因,是否与转子断条有关?

2025-02-06 10:59:26
推荐回答(5个)
回答1:

电动机空载电流一般为额定电流的20-50%,如果空载电流过大应进行如下检查。
1 定子绕组的相电压是否过高
2 是否把星型接线错接成角型
3 电动机的气隙是否过大
4 绕组内部接线有无错误
5 定子绕组线径是否过小
6 定,转子的铁芯是否齐整
7 装配质量是否合格,轴承润滑是否良好
8 铁心重量是否过小
9 绕组内部有无短路,断路或接地故障
你的绕组线径是和原线径一样的话肯定是你的绕组接线错误,否则不会出现这种现象。我们原来也遇到这种现象都是修过定子之后出现的,从新在做定子绕组之后就好了。
你在用万用表测一下电机的三相阻值是否平衡,如不平衡就是绕组内部接线错误,还可以用交流三相电压为36V的变压器来试,直接接在电机U,V,W,接线柱上,把转子抽出然后 加上三相交流36V电,定子内膛放一圆型钢珠,如果电机没为题钢珠会一直贴着定子旋转,要是电机个绕组有问题钢珠就会停在那个绕组

回答2:

5倍的额定电流啊,不是启动的话,一般都是有问题的.可能是转子断条导致假堵转造成的吧.期待大虾解决这个问题,我也很有兴趣.

回答3:

感觉一下电机的声音和转速有什么异常,导至此情形的原因有多方面,最大的可能是轴承坏了,转子不能正常转动,

回答4:

期待解决方法。

回答5:

过流分好多种,你这属于无负载启动过流,一般这种风机启动,出风口一定不能全开,保持风机风道内的压力大于进风口,从而曾大风机的负载,然后随着风机的正常运行了,就要把风阀全开,使其正常。新手!不负任何责任!听我们这里工程师说的

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