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Brand range: 355W–740W
Monocrystalline
G-Star Pte Ltd GSD8R66T-640BT
Max Power
640W
Efficiency
23.88%
Operating V
42.1V
Warranty
30Y
Technical Specifications
| Open Circuit Voltage (Voc) | 49.9V |
| Short Circuit Current (Isc) | 15.99A |
| Voltage at Pmax (Vmp) | 42.1V |
| Current at Pmax (Imp) | 15.22A |
| Temp. Coefficient of Pmax | -0.293%/°C |
| Dimensions | 2103 x 1274 x 35 mm |
| Weight | 33.5kg |
| NOCT | 43.1°C |
| PTC Rating | 614.8W |
📋 Data verified: June 2026
📄 Specs based on STC (1000 W/m², 25°C, AM 1.5)
🏷️ 224 G-Star Pte Ltd models in database
FAQ
What is the max power output of the G-Star Pte Ltd GSD8R66T-640BT?
The G-Star Pte Ltd GSD8R66T-640BT is rated at 640W under STC (1000 W/m², 25°C, AM 1.5).
How does temperature affect the G-Star Pte Ltd GSD8R66T-640BT?
With a temp coefficient of -0.293%/°C, it outperforms the industry average of -0.35 to -0.40%/°C.
What are the dimensions and weight of the G-Star Pte Ltd GSD8R66T-640BT?
It measures 2103 x 1274 x 35 mm and weighs 33.5kg.
How efficient is the G-Star Pte Ltd GSD8R66T-640BT?
This panel has 23.88% efficiency, which is high for commercial solar panels.
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☀️ Top Performer
This G-Star Pte Ltd model ranks among the brand's most efficient panels at 23.88%.
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