Over 50% of Earth’s total electricity consumption is used for operating motors and motor systems. HVAC contractors and technicians encounter motors in a variety of different applications, and aspects ...
The way we control the speed of fan motors or pump motors has tremendously changed in the past two decades with the introduction of variable-frequency drives (VFDs), aka variable-frequency controllers ...
Variable speed drives (VSDs), sometimes also known as variable frequency drives, are electronic devices used to regulate the speed of an ac induction motor. Electric motors consume approximately 25% ...
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