Specs: Model Type YH535W-36M YH540W-36M YH545W-36M YH550W-36 - Peak Power(Pmax) 535 540 545 550 - Maximum Power Voltage(Vmp) 41.6 41.76 41.93 42.1 - Maximum Power Current(Imp) 12.84 12.93 13 13.06 - Open Circuit Voltage(Voc) 49.5±3% 49.7±3% 49.9±3% 50.1±3% - Short Circuit Current(Isc) 13.61±3% 13.72±3% 13.81±3% 13.9±3% - Module Efficiency(?) 20.93 21.12 21.32 21.51 Electrical Data (Noct) - Peak Power(Pmax) 397.7 401.4 405.1 408.9 - Maximum Power Voltage(Vmp) 38.62 38.78 38.93 39.09 - Maximum Power Current(Imp) 10.3 10.35 10.41 10.46 - Open Circuit Voltage(Voc) 46.36±3% 46.54±3% 46.73±3% 46.92±3% - Short Circuit Current(Isc) 10.97±3% 11.05±3% 11.13±3% 11.2±3% Temparature & Maximum Rating - Maximum System Voltage(V) 1500 - Maximum Series Fuse Rating(A) 25 - Power Tolerance 0~+3W - Pmax Temperature Coefficients(W/°C) -0.350% - Voc Temperature Coefficients(V/°C) -0.250% - Isc Temperature Coefficients(A/°C) +0.04% - NOCT Nominal Operating Cell Temperature(°C) 45±2 - Operating and Storage Temperature(°C) -40~+85 Mechanical Characteristics: - Cell Type 18291 Mon - No. of Cells 144 (6x12)2 - Dimensions 227911343 - Junction box IP67/IP68 - Output cables 4mm² cable 30cm+mc4 - MaxWind Load/Snow Load 2400Pa/5400Pa - Weight 28.4kg - Front Glass 3.2mm high transmission,low iron,tempered glass - Frame Anodized Aluminium Alloy - Junction box IP67/IP68 - Output cables 4mm² cable 30cm+mc - MaxWind Load/Snow Load 2400Pa/5400Pa