In HVAC, efficiency is king. That is why variable frequency drives (VFDs) have become the standard control system in HVAC and large industrial chiller installations. VFDs offer precision speed control for motors driving pumps, chillers, fans, and compressors, yielding significant energy savings and lower operation costs. To further increase efficiency, many industrial HVAC applications are adopting permanent magnet (PM) motors. Utility companies are responsible for tirelessly maintaining the integrity of the power grid.
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