LARGE-HIGH-QUALITY VFD PANELS FOR EXACT INDUSTRIAL MOTOR PACE MANAGEMENT

As an example, with a standard 480 VAC 3-stage enter voltage, the DC bus will hold a charge of about 650 VDC, with real bus voltage depending upon the line voltage stage and motor load. The main reason the DC bus voltage is increased in comparison to the nominal input line voltage is due to root-indicate-squared measurements of AC sine waves (the �