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  1. gsanders

    VFD bearing failure

    We are having bearing failures on 300 and 100 hp motors using siemens drives. We have 4 toshiba 300 hp motors 2 us electric 300 hp motors and 2 siemens 100 hp motors all on siemens vfd's. Alot of people have been telling me it could be a ground issue but they can not tell me why or how to...

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