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Items Tagged with 'variable frequency drives'


Energy Efficient Electric Motors

Baldor Electric Company has released a new line of energy efficient electric motors.
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Protect VFD-actuated motors from electrical bearing damage

Bearing seals only keep away the dirt, while stray voltage and current injury persists
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
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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