Yueqing Sandi Electric Co.,Ltd is one of the leading China pure sine wave inverters manufacturers,Website:http://www.cnsandi.com, welcome to wholesale cheap pure sine wave inverters from our professional factory.Technical ParametersModelSDP-20KWIsolation modeLow Frequency TransformerDC InputRated voltage (Vdc)220V240VRated current(A)91A83AAC OutputRated output power20KWOutput waveformPure Sine WaveRated Voltage220V±3%110/220VAC±3%380VA±3%PhasesSingle phase2 phase 3 wire3 phase 4 wireRated current (A)91A91A (phase current)31A (phase current)Frequency50Hz or 60HzRated output voltage range (V)110/120/220/230/240/380/400/415/440VAC optionalPhasesSingle / Two/ Three phase optionalPower Factor (PF)>0.95Overload Ability150%, 5 secondsEfficiency>94%Waveform distortion rate (THD)<3%(Linear load)Dynamic Response                                (0 to 100% load)5%, ≤50msDisplayLCDRunning modeWorking continuouslyElectrical insulation properties2000Vac, 1 MinuteAC Bypass FunctionOptionalSolar Charge Controller built inOptionalAC to DC battery Charger built inOptionalRS485 remote monitoringOptionalWide voltage input 100-850VDC(optional)Off grid inverter can work without batteryProtection FunctionProtectionInput reverse polarity, under voltage, overvoltage, output over-current, short circuit, overheating etc.Cooling methodFan-cooledShort-circuit protectionNo automatic recovery, need to restart the machineWorking environmentNoise ( 1 meter)≤50dBDegree of protectionIP20(indoor)Working Altitude (m)≤2000Working temperature-25~+55℃relative humidity0~90%,non-condensingMechanical dimensionDepth* Width * Height600x700x1000mmWeight (Kg)180KgCertificationEuropean CE(EMC & LVD), SAA