144. SPECIFICATIONMODEL HD Plus1000-12 HD Plus2000-24CAPACITY VA/W 1000VA/720W 2000VA/1300WNOMINAL BATTERY VOLTAGE 12VDC 24VDCLINE MODEINPUTNominal Voltage 230VACVoltage Range 170-280VAC (Narrow Range)90-280VAC (Wide Range)Normal voltage 50Hz or 60HzOUTPUTVoltage 230VACFrequency Following the UtilityOutput Waveform Following the UtilityEFFICIENCY >95% (full R load, battery full charged)TRANSFER TIME 15ms Typical, 40ms Max.BACKUP MODEOUTPUTVoltage 230VAC (+10% / -18%)Frequency 50Hz or 60Hz (Auto detection)Output Waveform Modified Sine-waveEFFICIENCY >80%OVERLOAD PROTECTION 1min@>110%, 20s@>120%, 0s@>150%PROTECTION Discharge, over-charged, over-loading, over-temperature,short-circuit protectionBATTERY CHARGER (powered by AC)CHARGING ALGORITHM 3-step chargingAC CHARGING MODE 15 Amp or 20AmpSelectable 10AmpFLOATING CHARGING VOLTAGE 13.7V 27.4VOVERCHARGING VOLTAGE 16V 32VSOLAR BATTERY CHARGERMAX. INPUT POWER 450W 900WCHARGING CURRENT 40AmpNOMINAL BATERY VOLTAGE 12V 24VOPTIMAL WORK VOLTAGE RANGE 15V~18V 30V~36VMAX. PV INPUT VOLTAGE 55VMAX. PV INPUT CURRENT 40 Amp