Open Circuit voltage (Voc) 21.6V Optimum Operating Voltage (Vmp) 17.2V Short Circuit Current(Isc) 1.96A Optimum Operating Current (Imp) 1.75A Maximum Power at STC (Pmax) 30Wp Operating Temperature -40℃ to + 85℃ Maximum System Voltage 1000VDC Power Tolerance ±3% STC: Irradiance 1000W/m, Module temperature 25℃, AM=1.5 Temperature Coefficients Short-circuit Current TK(I) -0.47%/℃ Temperature Coefficients of Im +0.4%/℃ -0.38%/℃ Temperature Coefficients of Vm -0.38%/℃ +0.10%/℃ MAX LOAD 5400N/M2 Mechanical Characteristics Solar Cell Mono-crystalline No. of Cells 36 Dimensions 645×545×23mm Weight 5.2kg (11.5lbs.) Front Glass 3.2mm (0.13inch) tempered glass Frame Anodized aluminum alloy