AC Motor Bearing Failure Due to Electrical Discharge, 19TissueCon



This document was created by a TAPPI Task Group to provide information and guidelines for application of Shaft Grounding Ring to protect motor bearings from electrical fluting damage in AC induction motors operated on variable frequency drives (VFD).  Motors range in size from 1 HP to over a 1000 HP.

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AC Motor Bearing Failure Due to Electrical Discharge, 19Tiss
AC Motor Bearing Failure Due to Electrical Discharge, 19TissueCon
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