Grid Tie 4kw Inverter Features :·Maximum efficiency of 97.8% and wide input voltage range·Internal DC switch·Transformerless GT topology·High frequency·Compact design·MTL - String·Bluetooth / RF technology / Wifi·Sound control·Fanless cooling concept·Easy installation·High reliabilityDatasheet YS 4000YS 4400YS 5000Input data (DC)Max. Recommended PV Power        (for solar panel STC)4200W4600W5200WMax. DC voltage 580V580V580VStart voltage 150V150V150VPV voltage range100V-580V100V-580V100V-580VMPP work voltage range/nominal voltage120V-580V/180V120V-580V/360V120V-580V/360VFull load dc voltage range250V-500V250V-500V250V-500VMax. input current 20A20A20AMax. input current per string20A20A20ANumber of independent MPP trackers        /stings per MPP tracker1/31/31/3Output (AC)Rated AC output power 3680W4200W4600WMax. AC power 4000W4400W5000WMax. output current16A21A25AAC nominal voltage ; range 220,Website:http://www.yangtze-power.com,230,240V        180Vac-280Vac220,230,240V        180Vac-280Vac220,230,240V        180Vac-280VacAC grid frequency; range50,60Hz;±5 Hz50,60Hz;±5 Hz50,60Hz;±5 HzPower factor 111THDI＜3%＜3%＜3%AC connection Single phaseSingle phaseSingle phaseEfficiencyMax. efficiency97.8%97.8%97.8%Euro weighted efficiency97.4%97.4%97.4%MPPT efficiency99.5%99.5%99.5%Protection DevicesDC reverse polarity protectionyesyesyesDC switch rating for each MPPTyesyesyesOutput over current protection yesyesyesOutput over voltage protection-varistoryesyesyesGround fault monitoring yesyesyesGrid monitoring yesyesyesIntegrated all-pole sensitive leakage        current monitoring unit yesyesyesGeneral DataDimensions (W / H / D) in mm406*406*192406*406*192406*406*192Weight 21kg21kg21kgOperating temperature range -25℃…+60℃-25℃…+60℃-25℃…+60℃Noise emission (typical)≤25dB(A)≤25dB(A)≤25dB(A)Altitude2000m 2000m 2000m Self-Consumption at night ＜0.5W＜0.5W＜0.5WTopologyTransformerlessTransformerlessTransformerlessCooling conceptNaturalNaturalNaturalEnvironmental Protection Rating IP65IP65IP65Relative humidity0~95%0~95%0~95%FeaturesDC connection H4/MC4 (opt)H4/MC4 (opt)H4/MC4 (opt)AC connection Screw terminalScrew terminalScrew terminalDisplayLCDLCDLCDInterfaces: RS232/RS485RF/Wi-Fi/Ethernetyes/yes/opt/opt/optyes/yes/opt/opt/optyes/yes/opt/opt/optWarranty: 5 years / 10 yearsyes/optyes/optyes/optCertificates and Approvals CE, VDE 0126-1-1, DK5940,  IEC 62109, G83, AS4777, AS/NZS 3100, CEI0-21,                                                  VDE-AR-N4105, EN0438, CQC