A true double conversion online UPS, the AP Premium (100 to 400kVA, three-phase) employs next-generation technology to provide reliability, efficiency and flexibility in a remarkably small footprint. The AP Premium is engineered to deliver greater real power to protect the most demanding applications, including today’s leading power factor loads. High performance IGBT’s, positioned at the front end, provide active filtering to assure the cleanest sinusoidal waveform. Advanced digital controls and communications give the user easy and confident command of the system. And an innovative DC interface prolongs battery service life.