Sorensen 55V 55A variable DC power supply, model number DCS55-55. Used. Input voltage: 200-250VAC, 47-63Hz single or three-phase (output power limited to 2.5kW with single phase input). Comes with connector required to interface with input power plug. To view a full product manual, click here. Please note that Sorensen is now part of the Elgar/Xantrex/Ametek brand.