Compare Wiosun C280M vs ET Solar ET-M672BH440WWET

Warranty Terms

Output Warranty:

25 Years of 85% Output Power

Materials Warranty: 10 Years

Panel Performance

Rated Power: 280 Wp

Efficiency: 17.21 %

Voltage at Maximum Power VMPP: 31.5 V

Current at Maximum Power IMPP: 8.95 A

Open Circuit Voltage VOC: 39.45 V

Short Circuit Current ISC: 9.55 A

Power Tolerance Positive: + 1.5 %

Maximum System Voltage: 1500 V

Solar Panels Thermal Ranges

Operating Temperature Range: -40~85 °C

Temperature Coefficient of Pmax: -0.4 %/°C

Temperature Coefficient of Voc: -0.3 %/°C

Temperature Coefficient of Isc: 0.04 %/°C

Solar Panel Attributes

Weight: 18 kg

Cell Type: PERC

Cell Count: 60

Glass Thickness: 3.2 mm

Juntion Box Protection Class: IP 65

Cable Length: 1000 mm

Glass Type: unknown

Warranty Terms

Output Warranty:

12 Years of 90% Output Power, 25 Years of 80% Output Power

Materials Warranty: unknown

Panel Performance

Rated Power: 440 Wp

Efficiency: 19.8 %

Voltage at Maximum Power VMPP: 41 V

Current at Maximum Power IMPP: 10.74 A

Open Circuit Voltage VOC: 49.6 V

Short Circuit Current ISC: 11.33 A

Power Tolerance Positive: + 3 %

Maximum System Voltage: 1500 V

Solar Panels Thermal Ranges

Operating Temperature Range: -40~85 °C

Temperature Coefficient of Pmax: -0.37 %/°C

Temperature Coefficient of Voc: -0.286 %/°C

Temperature Coefficient of Isc: 0.057 %/°C

Solar Panel Attributes

Weight: 24 kg

Cell Type: Monocrystalline

Cell Count: 144

Glass Thickness: 3.2 mm

Juntion Box Protection Class: IP 67

Cable Length: unknown

Glass Type: Anti-reflection Coating