Grid Tie 12kw Inverter Features :·Maximum efficiency of 98.6%·DC input voltage up to 1000V·Internal DC switch·Transformerless·Compact design·Multi MPP controller·MTL-String·Ethernet /RF technology /Wi-fi·Sound control·Easy installation·Comprehensive Growatt warranty programDatasheetYS 10000YS 12000YS 18000YS 20000Input data (DC)Max. Recommended PV Power        (for solar panel STC)11000W13200W19800W22000WMax. DC voltage1000V1000V1000V1000VStart voltage350V350V350V350VPV voltage range180V-1000V180V-1000V180V-1000V180V-1000VMPP work voltage range/nominal voltage300V-1000V/600V300V-1000V/600V300V-1000V/600V300V-1000V/600VMax. input current15A/15A17A/17A23A/23A26A/26AMax. input current per string20A20A20A20ANumber of independent MPP trackers/stings per MPP tracker2/22/22/32/3Output (AC)Rated AC output power10KW12KW18KW20KWMax. AC power10KVA12KVA18KVA20KVAMax. output current16A19A28.6A32AAC nominal voltage ; range3/N/PE,Website:http://www.yangtze-power.com,230V/400V184-275V3/N/PE,230V/400V184-275V3/N/PE,230V/400V184-275V3/N/PE,230V/400V184-275VAC grid frequency; range50,60Hz;44-55HZ/54-65HZ50,60Hz;44-55HZ/54-65HZ50,60Hz;44-55HZ/54-65HZ50,60Hz;44-55HZ/54-65HZAdjustable displacement power factor1111THDI＜3%＜3%＜3%＜3%AC connection3/N/PE,3W+PE(opt)3/N/PE,3W+PE(opt)3/N/PE,3W+PE(opt)3/N/PE,3W+PE(opt)EfficiencyMax. efficiency98%98%98%98%Euro - eta97.5%97.5%97.5%97.5%MPPT efficiency99.5%99.5%99.5%99.5%Protection DevicesDC reverse polarity protectionyesyesyesyesDC switch rating for each MPPTyesyesyesyesOutput over current protectionyesyesyesyesOutput over voltage protection-varistoryesyesyesyesGround fault monitoringyesyesyesyesGrid monitoringyesyesyesyesIntegrated all-pole sensitive leakage        current monitoring unityesyesyesyesGeneral DataDimensions (W / H / D) in mm490*740*235490*740*235490*740*235490*740*235Weight41kg41kg41kg41kgOperating temperature range-25℃…+60℃-25℃…+60℃-25℃…+60℃-25℃…+60℃Noise emission (typical)≤55dB(A)≤55dB(A)≤25dB(A)≤25dB(A)Altitude2000m2000m2000m2000mSelf-Consumption at night＜0.5W＜0.5W＜0.5W＜0.5WTopologyTransformerlessTransformerlessTransformerlessTransformerlessCooling conceptSmart CoolingSmart CoolingSmart CoolingSmart CoolingEnvironmental Protection RatingIP65IP65IP65IP65Relative humidity0~100%0~100%0~100%0~100%FeaturesDC connectionH4/MC4 (opt)H4/MC4 (opt)H4/MC4 (opt)H4/MC4 (opt)AC connectionScrew terminalScrew terminalScrew terminalScrew terminalDisplayLCDLCDLCDLCDInterfaces: RS232/RS485RF/Wi-Fi/Ethernetyes/yes/opt/opt/optyes/yes/opt/opt/optyes/yes/opt/opt/optyes/yes/opt/opt/optWarranty: 5 years / 10 yearsyes/optyes/optyes/optyes/optCertificates and Approvals VDE-AR-N4105, CEI 0-21, CE, VDE 0126-1-1, IEC 62109, RD 1663/2000, G59/2. EN50438, AS4777, AS/NZS 3100