... Audible AlarmHT series online UPS 6-20kVA characteristics:1. True online double conversion technology2. IGBT PFC ... ), user adjustable within 40-60HzPower factor0.98OutputVoltage220VAC ± 1%Frequency50/60Hz± 0.2Hz(line mode), 50/60Hz ... capability105%-130% for 10 minutes, 130% for 1 minutesCrest factor3:1Battery TypeSealed, maintenance free, lead-acidBackup ... (mm)260*570*717 3:1 Phase Online UPS(10~20KVA)