LONGi 620W LR8-66HGD Bifacial SF Panel

The LONGi Hi-MO 7 LR8-66HGD in the 620W variant is a high-performance bifacial module designed for use in solar power plants and utility installations. It utilizes advanced HPDC half-cell technology, resulting in high efficiency, good temperature characteristics, and increased energy yields due to bifacial efficiency.

Manufacturer Information

The manufacturer of the module is LONGi — an international company specializing in the production of photovoltaic cells and modules. LONGi employs management and quality control systems compliant with ISO9001, ISO14001, and ISO45001 standards and holds industry certifications IEC 61215, IEC 61730, and UL. The company offers a 12-year warranty on materials and workmanship and a 30-year warranty on linear power degradation.

Electrical and Operational Parameters

• Maximum Power (Pmax, STC): 620 W
• Open Circuit Voltage (Voc): 48.78 V
• Short Circuit Current (Isc): 16.05 A
• Voltage at MPP (Vmp): 40.91 V
• Current at MPP (Imp): 15.16 A
• Module Efficiency (STC): 23.0%
• Power Tolerance: 0 ~ +3%
• Maximum System Voltage: DC 1500 V (IEC/UL)
• Power Degradation Rate: <1% first year; 0.4% per year in years 2–30 (30-year warranty up to ~87.4%)
• Bifaciality (rear side coefficient): 80 ±5%

Mechanical Parameters

• Dimensions (L×W×H): 2382 × 1134 × 30 mm
• Weight: 33.5 kg
• Glass: double tempered glass 2.0 + 2.0 mm
• Frame: anodized aluminium alloy
• Cell Orientation: 132 (6×22)
• Junction Box: IP68, three diodes
• Mechanical Load: maximum static load from the front 5400 Pa, from the rear 2400 Pa; hail test: 25 mm at a speed of 23 m/s
• Packaging: 36 pcs on a pallet / 144 pcs in a 20' GP container / 720 pcs or 576 pcs (for USA only) in a 40' HC