Compare ILB Helios Group NA290WM72-156/J vs IREX Energy Joint Stock IR305P-60DG

Warranty Terms

Output Warranty:

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

Materials Warranty: 10 Years

Panel Performance

Rated Power: 290 Wp

Efficiency: 14.95 %

Voltage at Maximum Power VMPP: 36.16 V

Current at Maximum Power IMPP: 8.02 A

Open Circuit Voltage VOC: 44.2 V

Short Circuit Current ISC: 8.52 A

Power Tolerance Positive: + 5 %

Maximum System Voltage: 1000 V

Solar Panels Thermal Ranges

Operating Temperature Range: -40~85 °C

Temperature Coefficient of Pmax: -0.42 %/°C

Temperature Coefficient of Voc: -0.34 %/°C

Temperature Coefficient of Isc: 0.06 %/°C

Solar Panel Attributes

Weight: 22 kg

Cell Type: Monocrystalline

Cell Count: 72

Glass Thickness: 3.2 mm

Juntion Box Protection Class: IP 67

Cable Length: 1000 mm

Glass Type: Tempered, Low Iron

Warranty Terms

Output Warranty:

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

Materials Warranty: 12 Years

Panel Performance

Rated Power: 305 Wp

Efficiency: 18.5 %

Voltage at Maximum Power VMPP: 32.69 V

Current at Maximum Power IMPP: 9.33 A

Open Circuit Voltage VOC: 40.45 V

Short Circuit Current ISC: 9.9 A

Power Tolerance Positive: + 3 %

Maximum System Voltage: 1500 V

Solar Panels Thermal Ranges

Operating Temperature Range: -40~85 °C

Temperature Coefficient of Pmax: -0.408 %/°C

Temperature Coefficient of Voc: -0.292 %/°C

Temperature Coefficient of Isc: 0.045 %/°C

Solar Panel Attributes

Weight: 20 kg

Cell Type: Polycrystalline

Cell Count: 60

Glass Thickness: unknown

Juntion Box Protection Class: IP 67

Cable Length: 900 mm

Glass Type: Tempered, High Transmittance, Low Iron