The PTE220 is a compact 240V/480V voltage-doubling 20 horsepower digital single-phase to three-phase converter. It will supply three-phase 480V power from a single-phase 240V source for a single or combined loads, including hard starting loads such as compressors, conveyors, and pumps up to 20HP. The supplied power is utility-quality with voltage balance within 2% and has advanced digital monitoring to protect your valuable three-phase equipment.