Master HP UL is a UL-listed, three-phase UPS for 65 to 250-kVA applications. Built with IGBT and digital signal processing, the product has online double-conversion technology for maximum power supply protection and power quality with a clean sine-wave output. The 480-V 60 Hz units can run in parallel or for redundant operations. Smart Grid ready, the series allows implementation of energy storage solutions and is able to electronically interface through the communications network of a Smart Grid. An output isolation transformer ensures the galvanic isolation of the protected load towards the battery and improved versatility in system configuration. This allows two separate network inputs (main and emergency) from two different power sources.