Compare ET Solar ET-P660H290WW vs ILB Helios Group NA215W-PS

Warranty Terms

Output Warranty:

unknown

Materials Warranty: 25 Years

Panel Performance

Rated Power: 290 Wp

Efficiency: 17.72 %

Voltage at Maximum Power VMPP: 32.65 V

Current at Maximum Power IMPP: 8.88 A

Open Circuit Voltage VOC: 40.41 V

Short Circuit Current ISC: 9.53 A

Power Tolerance Positive: + 3 %

Maximum System Voltage: unknown

Solar Panels Thermal Ranges

Operating Temperature Range: -40~85 °C

Temperature Coefficient of Pmax: -0.41 %/°C

Temperature Coefficient of Voc: -0.34 %/°C

Temperature Coefficient of Isc: 0.04 %/°C

Solar Panel Attributes

Weight: 18.6 kg

Cell Type: Polycrystalline

Cell Count: 60

Glass Thickness: 3.2 mm

Juntion Box Protection Class: IP 67

Cable Length: 90 mm

Glass Type: Anti-reflection Coating

Warranty Terms

Output Warranty:

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

Materials Warranty: 10 Years

Panel Performance

Rated Power: 215 Wp

Efficiency: 16.36 %

Voltage at Maximum Power VMPP: 27.2 V

Current at Maximum Power IMPP: 7.91 A

Open Circuit Voltage VOC: 32.92 V

Short Circuit Current ISC: 8.45 A

Power Tolerance Positive: + 5 %

Maximum System Voltage: 1000 V

Solar Panels Thermal Ranges

Operating Temperature Range: -40~85 °C

Temperature Coefficient of Pmax: -0.4510 %/°C

Temperature Coefficient of Voc: -0.2960 %/°C

Temperature Coefficient of Isc: 0.072 %/°C

Solar Panel Attributes

Weight: 17.5 kg

Cell Type: Polycrystalline

Cell Count: 54

Glass Thickness: 3.2 mm

Juntion Box Protection Class: IP 67

Cable Length: 1000 mm

Glass Type: Tempered, High Transmittance, Low Iron