EXCEPTIONAL VFD CONTROL PANELS FOR ECONOMICAL ELECTRICAL MOTOR SPEED REGULATION IN UAE

For example, with a normal 480 VAC 3-phase input voltage, the DC bus will hold a charge of about 650 VDC, with real bus voltage dependant upon the line voltage degree and motor load. The key reason why the DC bus voltage is greater as opposed to nominal input line voltage is due to root-signify-squared measurements of AC sine waves (the “peaks”