Technical parameter Maximum power(w) 90w Optimum power voltage(vmp) 18.33v Optimum operating current(imp) 4.91a Open circuit voltage(voc) 21.96v Short circuit current(isc) 4.89a Mechanical characteristics Cell type poly-crystalline 156x104mm (6 inch) No of cell 36 (4x9pcs) Dimensions 1008x678x35mm Weight 8.0kgs Front glass 3.2mm, high transmission, low iron, tempered glass Junction box ip65 rated Output cable tuv 1x4.0mm2/ul12awg, length:900mm Temperature and coefficients Operating temperature(°c): -40°c ~ + 85°c Maximum system voltage: 600v(ul)/1000v(iec) dc Maximum rated current series: 15a Temperature coefficients of pmax: -0.435% Temperature coefficients of voc: -0.35% Temperature coefficients of isc: 0.043% Nominal operationg cell temperature (noct): 47+/-2°c Materials of solar panel 1).Solar cell------poly-crystalline solar cell 156*104mm 2).Front glass-------3.2mm, high transmission, low iron, tempered glass 3).Eva-------excellent anti-aging eva 4).Tpt-------tpt hot seal made of flame resistance 5).Frame------anodized aluminum profile 6).Junction box-------ip65 rated, high quality, with diode protection Superiority: high quality anodized aluminum frame, high efficiency long life, easy installation, strong wind resistance, strong hail resistance. Features 1. High cell efficiency with quality silicon materials for long term output stability 2. Strictly quality control ensure the stability and reliability, totally 23 qc procedures 3. High transmittance low iron tempered glass with enhanced stiffness and impact resistance 4. Both poly-crystalline and mono-crystalline 5. Excellent performance in harsh weather 6. Outstanding electrical performance under high temperature and low irradiance Quality assurance testing Thermal cycling test Thermal shock test Thermal/freezing and high humidity cycling test Electrical isolation test Hail impact test Mechanical, wind and twist loading test Salt mist test Light and water-exposure test Moist carbon dioxide/sulphur dioxide