Compare Haerbin Green Solar GS305*1245-29 vs Tommatech TT270 60P

Warranty Terms

Output Warranty:

unknown

Materials Warranty: 1 Year

Panel Performance

Rated Power: 20 Wp

Efficiency:

Voltage at Maximum Power VMPP: 18.5 V

Current at Maximum Power IMPP: 1.1 A

Open Circuit Voltage VOC: 22.5 V

Short Circuit Current ISC: 1.2 A

Power Tolerance Positive: unknown

Maximum System Voltage: unknown

Solar Panels Thermal Ranges

Operating Temperature Range: unknown

Temperature Coefficient of Pmax: unknown

Temperature Coefficient of Voc: unknown

Temperature Coefficient of Isc: unknown

Solar Panel Attributes

Weight: unknown

Cell Type: Thin film(a-Si)

Cell Count: unknown

Glass Thickness: 3.2 mm

Juntion Box Protection Class: unknown

Cable Length: unknown

Glass Type: High Transmittance

Warranty Terms

Output Warranty:

12 Years of 90% Output Power, 25 Years of 83.5% Output Power

Materials Warranty: 12 Years

Panel Performance

Rated Power: 270 Wp

Efficiency: 16.47 %

Voltage at Maximum Power VMPP: 31 V

Current at Maximum Power IMPP: 8.71 A

Open Circuit Voltage VOC: 38 V

Short Circuit Current ISC: 9.21 A

Power Tolerance Positive: + 2 %

Maximum System Voltage: 1000 V

Solar Panels Thermal Ranges

Operating Temperature Range: -40~85 °C

Temperature Coefficient of Pmax: -0.38 %/°C

Temperature Coefficient of Voc: -0.31 %/°C

Temperature Coefficient of Isc: 0.06 %/°C

Solar Panel Attributes

Weight: 18 kg

Cell Type: Polycrystalline

Cell Count: 60

Glass Thickness: unknown

Juntion Box Protection Class: IP 67

Cable Length: 1000 mm

Glass Type: Anti-reflection Coating