SUBSTANTIAL-FUNCTIONALITY VFD PANELS FOR ENHANCED ELECTRICAL MOTOR SPEED REGULATION

For example, with a normal 480 VAC three-stage input voltage, the DC bus will keep a charge of about 650 VDC, with precise bus voltage depending on the line voltage degree and motor load. The reason the DC bus voltage is larger than the nominal input line voltage is due to the root-signify-squared measurements of AC sine waves (the “peaks” of t