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Items Tagged with 'variable frequency drives'

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Energy-saving VFDs can induce electrical bearing damage in pump motors

Grounding ring part of solution for mitigating damage that can lead to premature failure
February 1, 2013
Through trial-and-error and much hard work, a Kansas motor repair shop says it has developed a virtually foolproof process for protecting vertical hollow-shaft motors from the electrical bearing damage caused by stray shaft currents.
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