Parameters of TW Roof Top Solar Panels
Cell Type | TNC |
Cell Orientation | 156[6×26] |
Dimensions | 2465±2mm × 1134±2mm × 30mm |
Weight | 34.6 kg |
Front Glass | 2.0 mm AR coated heat strengthened glass |
Rear Glass | 2.0 mm heat strengthened glass |
Frame | Anodized aluminum alloy black frame |
Junction Box | IP68, 3 diodes |
Cable | 4.0 mm² |
Cable length | +400mm, -200mm, length can be customized |
Wind/Snow load | 2400Pa/5400Pa |
Packaging | 36 pcs, 576 pcs per 40’HC |
Fire class rating | Class C |
Statement: With technological process and product update, there maybe deviation between the technical parameters of Tongwei’s module products and the technical parameters contained in the specification, and Tongwei Solar has the right to adjust the technical parameters at any time without notifying the customer,the final interpretation of the technical specification is vested in Tongwei Solar.
Electrical Characteristics (STC)
Module type | TWMND-78HD600-620W | ||||
Maximum Power : Pmax [W] | 600 | 605 | 610 | 615 | 620 |
Open Circuit Voltage : Voc [V] | 54.80 | 55.00 | 55.20 | 55.40 | 55.60 |
Short Circuit Current : lsc [A] | 14.02 | 14.06 | 14.10 | 14.14 | 14.18 |
Voltage at Maximum Power: Vmp [V] | 45.58 | 45.78 | 45.98 | 46.18 | 46.38 |
Current at Maximum Power: lmp [A] | 13.16 | 13.22 | 13.27 | 13.32 | 13.37 |
Module Efficiency: η [%] | 21.5 | 21.6 | 21.8 | 22.0 | 22.2 |
STC: Irradiance 1000W/m², Cell Temperature 25°C, Air Mass=1.5, Test Uncertainty: ±3% |
Electrical Characteristics (NMOT)
Maximum Power : Pmax [W] | 451.2 | 454.9 | 458.7 | 462.4 | 466.2 |
Open Circuit Voltage : Voc [V] | 51.73 | 52.24 | 52.43 | 52.62 | 52.81 |
Short Circuit Current : lsc [A] | 11.32 | 11.37 | 11.42 | 11.47 | 11.51 |
Voltage at Maximum Power: Vmp [V] | 42.90 | 42.94 | 42.98 | 43.02 | 43.07 |
Current at Maximum Power: lmp [A] | 10.52 | 10.59 | 10.66 | 10.72 | 10.79 |
NMOT: Irradiance 800W/m², Ambient Temperature 20°C, AM=1.5, Wind speed: 1m/s |
Advantages of Half-cell N-type Modules
Higher Power output
- Power of N-type modules is 15-20W higher than P-type under the same version
Higher Bifaciality
- Bifacility of N-type modules is 10-15% higher than P-type under the same version
Lower Temperature Coefficient
- Temperature coefficient of P-type module is -0.34%/℃
- The N-type module optimizes temperature coefficient to -0.30%/℃
- Power generation is particularly prominent in high-temperature environments
Better Power Guarantee
- 1% degradation in the first year for N-type module (2% for P-type)
- Both monofacial and bifacial has a 30-year output warranty (P-type bifacial 30-year, monofacial 25-year)
- Power output after 30 years is not less than 87.4% of the initial power