OUTPUT PARAMETERSCapacity650/390 W Nominal Voltage220 / 230 / 240 VacVoltage regulation1%Frequency range – Hz50±1%Transfer time2 to 6 msregulation±10%AC voltage Wave form Simulated sine waveINPUT PARAMETERSVoltage220/230VVoltage range140V-300VFrequency range – Hz50HZBATTERY PARAMETERSTypemaintance ..