1.3 phases uninterruptible power systems, 2.120KVA, 3.High frequency, 4.With external battery bank, 5.EPO and Bypass. Online three phase uninterruptible power systemsKEY FEATURES:Online double conversion VFI provide pure sine ware.IGBT inverter and output isolation transformer improve the system efficiency and reliability for kinds of load: transformer, emergency light, electric facility, ...