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大功率变频器维修注意的事项

浏览量:   来源:sx064.com  作者:宝川

  济南变频器维修:提防测量igbt模块的耐压诚然外表上觉得电压对大小变频器没区别,但由于变频器功率大了,马达负载的惯性比较大,在运行和刹车过程中可能会形成冲击电压,所以维修时最好对模块进行耐压测试,如果模块的耐压值下降,必需求坚持换掉,否则就可能在带载较沉的期间炸模块.

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  碰上三相不平衡问题空载时如果有三相不平衡(不管程度),都要反复检查模块,如果模块没问题,必需求用示波器检查触发电路的输出波形存不存在问题,常常讲,不平衡值<0v是正常的,>0v或<0v可能不正常,也可能正常,>0v常常都会有问http://sx064.com


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