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    What can be done when variable speed drives or VFDs are causing motor bearing failures?

    What can be done when VFDs are causing bearing failures?

    Product line:
    Altivar All

    All models, all serial numbers 
    Shaft currents causing the motor bearings to weld.

    Resolution:  Can try lowering switching frequency which will minimize the issue but not resolve it. Other suggestions are installing shaft grounding
    systems and insulated bearings. Please contact motor manufacturer for specific solutions.

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