MECHANICAL DATA Module Dimensions 2256*1133*35mm Weight 32.3kg Glass 3.2 mm (0.13 inches), High Transmission, AR Coated Tempered Glass Junction-Box IP 68, three diodes Cables 4.0mm² , 300mm in length Cell Orientation 144cells(6*24) Electrical Characteristics Model Number LR5-72HBD-540M LR5-72HBD-545M LR5-72HBD-550M Maximum Power (Pmax/W) 540 545 550 Open Circuit Voltage (Voc/V) 49.50 49.65 49.80 Short Circuit Current (Isc/A) 13.85 13.92 13.99 Voltage at Maximum Power (Vmp/V) 41.65 41.80 41.95 Current at Maximum Power (Imp/A) 12.97 13.04 13.12 Module Efficiency (%) 21.1 21.3 21.5 STC (Standard Testing Conditions): Irradiance 1000W/m2, Cell Temperature 25 ℃， Spectra at AM1.5