变频器电机旋转无力如何检修

变频器使用小电机测试一切正常,在公司使用就转速不足
2025-03-15 18:12:56
推荐回答(5个)
回答1:

1、检查电机三相绕组是否正常,排除电机缺相故障。

2、测量电压是否正常,如果电机线路截面小或者线路很长,会因线路压降过大,导致电机端的电压较低,造成电机输入电压低于额定值,致电机运转无力。

3、以上均无问题,脱开联轴器,单试电动机,根据转速、转动声音等情况判定电机转动是否正常,提前需要盘车以检查是否有卡涩、异物 或者轴承有问题。

扩展资料:

注意事项:

1、在使用变频器驱动高速电机时,由于高速电机的电抗小,高次谐波增加导致输出电流值增大。因此用于高速电机的变频器的选型,其容量要稍大于普通电机的选型。

2、变频器如果要长电缆运行时,此时要采取措施抑制长电缆对地耦合电容的影响,避免变频器出力不足,所以在这样情况下,变频器容量要放大一档或者在变频器的输出端安装输出电抗器。

3、对于一些特殊的应用场合,如高温,高海拔,此时会引起变频器的降容,变频器容量要放大一挡。

参考资料来源:百度百科-变频电机

回答2:

测试下公司的电压品质,换个电容试试,或者看下控制器线路有没有问题

回答3:

检查是不是负载比以前大了,其它参数有没有改变

回答4:

输出是否缺相?

广州安川变频器维修厂李工

回答5:

什么情况!

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