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News Motors and Drives: Even the Best Relationships Have Issues

Intended to protect, VFDs can adversely affect motors. Here are tips for mitigating damage and prolonging motor life.

Over the last 20 years, variable-frequency drives (VFDs) have become the dominant form of motor control in the HVAC industry. Tremendous energy savings and more-precise control sit atop a long list of benefits that have propelled VFDs to industry-standard status. With this rise in popularity, however, has come increased concern regarding the relationship between VFDs and the electric motors they control.

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