SUBSTANTIAL-EFFICIENCY VFD PANELS FOR VITALITY-SAVING MOTOR SPEED COMMAND IN UAE

As an example, with an average 480 VAC 3-phase input voltage, the DC bus will hold a demand of about 650 VDC, with true bus voltage depending upon the line voltage degree and motor load. The main reason the DC bus voltage is higher when compared to the nominal input line voltage is as a result of root-suggest-squared measurements of AC sine waves (