Suntech STP 270

SunTech Power STP270-24/Vb-1, Solar Module, 270 Watt, 24 Volt Detailed Description: 270 Watt Maximum Power POLY-CRYSTALLINE SOLAR PANEL Features • High conversion efficiency based on leading innovative photovoltaic technologies • High reliability with guaranteed +/-3% power output tolerance • Withstands high wind-pressure and snow load, and extreme temperature variations Quality and Safety • Industry-leading, transferable 25-year power output warranty • Rigorous quality control meeting the highest international standards • IOS 9001:2000 (Quality Management System) and ISO 14001:2004 (Environmental Management System) certified factories deliver world class products • UL listings: UL1703, cULus, Class C fire rating, conformity to CE Recommended Applications • On-grid utility systems • on-grid commercial systems • off-grid ground mounted systems Suntech's technology yields improvements to BSF structure and anti-reflective coating to increase conversion efficiency. The panel provides more field power output through an advanced cell texturing and isolation process, which improves low irradiance performance. Unique design on drainage holes and rigid construction prevents frame from deforming or breaking due to freezing weather and other forces. Electrical Characteristics Characteristics STP270-24/Vb-1 Open Circuit Voltage (Voc): 44.5 volts Optimum Operating Voltage (Vmp): 35 volts Short Circuit Current (Isc): 8.2 amps Optimum Operating Current (Imp): 7.71 amps Maximum Power at STC (Pmax): 270 watts Operating Temperature: -40°C to 85°C Maximum System Voltage: 600 VDC Maximum Series Fuse Rating: 20 amps Power Tolerance: ±3% STC Irradiance 1000W/m2, Module temperature 25°C, AM=1.5 Mechanical Characteristics Solar Cell: Poly-crystalline 6" (156 x 156mm) Number of Cells: 72 (6x12) Dimension of module: 77.0" x 39.1" x 2.0" (1956 x 992 x 50 mm) Weight: 59.5 lbs. (27.0 kg) Front Glass: 0.16" (4 mm) tempered glass Frame: Anodized aluminum alloy Junction Box: IP65 rated Output Cables: AIW (12AWG), asymmetrical lengths (-) 47.2" (1200 mm) and (+) 31.5" (800 mm), MC Plug Type IV connectors Temperature Coefficients Nominal Operating Cell Temperature (NOCT) 45±2°C Temperature Coefficient of Pmax: -(0.47±0.05)%/°C Temperature Coefficient of Voc: -(0.34±0.01)%/°C Temperature Coefficient of Isc: -(0.055±0.01)%/°C Limits Operating temperature: -40 to +85 C Maximum system voltage: 1000VDC Temperature and Coefficients Nominal Operation Cell Temperature (NOCT): 48 C +- 2 C Current temperature coefficient %/K: 0.06 +- 0.01 Voltage temperature coefficient mV/K: -(155 +- 10) Power temperature coefficient %/K: -(0.5 +- 0.05) Output Type of output terminal: Junction Box Cable: LAPP (4.0 mm sq.) Asymmetrical lengths: 750 mm(-) and 750 mm(+) Connection: Suntech Plug Type IV

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