SIGNIFICANT-FUNCTIONALITY VFD PANELS FOR STRENGTH-PRODUCTIVE SPEED COMMAND IN UAE

As an example, with an average 480 VAC three-stage enter voltage, the DC bus will keep a charge of about 650 VDC, with real bus voltage depending on the line voltage level and motor load. The key reason why the DC bus voltage is larger than the nominal input line voltage is a result of the root-mean-squared measurements of AC sine waves (the “pea