... Double conversion and IGBT technology Advanced battery management High frequency online UPSKey FeaturesTrue on-line double conversion technology with advanced ... 4 ms from inverter to bypass and vice versaLED IndicatorsStatusLoad level / Battery level, Battery , Utility Power, Inverter, Bypass, Overload, FaultAudible AlarmBypass, On ... x 400 x 220192 x 460 x 348 Online UPS/High frequency UPS 1KVA-3KVA