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Items Tagged with 'electro-static technology'


Protect VFD-actuated motors from electrical bearing damage

Bearing seals only keep away the dirt, while stray voltage and current injury persists
May 1, 2014
Until the day comes when all motors have built-in bearing protection, maintenance people and motor-repair shops will forever be replacing damaged bearings, so the common wisdom says.
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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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