Oswal Mono PERC Bifacial
505–560 Wp
Field-proven 144 half-cut multi-busbar bifacial module that harvests extra energy from the rear side. Available in DCR and Non-DCR variants.
Key Features
- Bifacial cells generate extra power from reflected light: up to 688 W at 550 Wp with 25% gain
- Anti-reflective (AR) coated glass to enhance solar energy capture
- Passivated Emitter Rear Cell (PERC) for higher energy conversion efficiency
- Multi-busbar (MBB) half-cut cells: stronger shade resistance and lower hot-spot risk
- Positive power tolerance with current binning to prevent mismatch losses
- Pre- and post-lamination EL inspection with high-resolution cameras to detect cell cracks
- IP68 junction box for long-term endurance in harsh conditions
- Hi-Pot tested for electrical safety
- Available in DCR and Non-DCR variants
Warranty & Reliability
Technical Data
Front-side electrical values at STC and NOCT, plus bifacial rear-side gain. Bifaciality factor 80 ± 10%.
| Model | 520 W | 540 W | 545 W | 550 W |
|---|---|---|---|---|
| Maximum Power Pmax (W) | 520 | 540 | 545 | 550 |
| Optimum Operating Voltage Vmp (V) | 41.02 | 42.34 | 42.65 | 42.984 |
| Optimum Operating Current Imp (A) | 12.68 | 12.76 | 12.78 | 12.80 |
| Open Circuit Voltage Voc (V) | 47.858 | 48.97 | 49.24 | 49.60 |
| Short Circuit Current Isc (A) | 13.33 | 13.45 | 13.48 | 13.52 |
| Module Efficiency (%) | 20.13 | 20.90 | 21.10 | 21.29 |
| Fill Factor (%) | 80.53 | 80.03 | 82.11 | 82.03 |
STC: irradiance 1000 W/m², AM 1.5, cell temperature 25 °C. Power measurement uncertainty <±3%. Full 505–560 Wp range available on request.
| Model | 520 W | 540 W | 545 W | 550 W |
|---|---|---|---|---|
| Maximum Power Pmax (W) | 389 | 412 | 410.4 | 412 |
| Optimum Operating Voltage Vmp (V) | 38.895 | 40.147 | 38.70 | 40.757 |
| Optimum Operating Current Imp (A) | 10.227 | 10.292 | 10.59 | 10.324 |
| Open Circuit Voltage Voc (V) | 45.379 | 46.433 | 46.70 | 47.038 |
| Short Circuit Current Isc (A) | 10.751 | 10.848 | 11.22 | 10.905 |
NOCT: irradiance 800 W/m², ambient 20 °C, wind 1 m/s.
| Front-side rating | 520 W | 540 W | 545 W | 550 W |
|---|---|---|---|---|
| 15% gain: Pmax (W) | 598 | 621 | 627 | 633 |
| 15% gain: Efficiency (%) | 23.15 | 24.04 | 24.26 | 24.48 |
| 20% gain: Pmax (W) | 624 | 648 | 654 | 660 |
| 20% gain: Efficiency (%) | 24.16 | 25.08 | 25.32 | 25.55 |
| 25% gain: Pmax (W) | 650 | 675 | 681 | 688 |
| 25% gain: Efficiency (%) | 25.16 | 26.13 | 26.37 | 26.61 |
Bifacial gain depends on plant design and site conditions. Select electrical components on the actual bifacial gain at site.
| Parameter | Value |
|---|---|
| Dimensions | 2278 × 1134 × 30 mm (±2 mm) |
| Weight | 26.5 kg (±0.4 kg) |
| Cell type | Mono PERC half-cut bifacial, 144 cells (12×6, 12×6) |
| Frame | Silver anodized aluminium alloy (6005, T6) |
| Front cover | ARC-coated low-iron tempered glass, 3.2 mm |
| Encapsulant | EVA sheet, PID-free and UV-resistant |
| Back sheet | Fluoro-polymer / polymer based composite film |
| Junction box | Split junction box, 3 units with bypass diodes, IP68, MC4 compatible |
| Cable | 4 mm², 300 / 400 mm (as per customer requirement) |
| Mounting hole pitch | Y: 400 / 1100 / 1400 mm · X: 1093 mm |
| Parameter | Value |
|---|---|
| Maximum system voltage | 1500 V |
| Operating temperature | −40 °C to +85 °C |
| Maximum series fuse rating | 25 A |
| Mechanical load (IEC & UL) | 5400 Pa front / 2400 Pa back |
| Application class / Safety class | Class A / Class II |
| Temp. coefficient of Isc (α) | 0.041 %/°C |
| Temp. coefficient of Voc (β) | −0.259 %/°C |
| Temp. coefficient of Pmax (γ) | −0.320 %/°C |
| Per 40 ft container | 704 modules · 22 pallets |
| Per pallet | 32 modules · 886 kg · 2300 × 1010 × 1210 mm |
Specifications are subject to change without notice due to ongoing product development. Data does not represent the performance of an individual module.
Need pricing, samples or a bulk quote?
Talk to our solar team: toll-free 1800 120 1882 · +91 99961 46500 · info@oswalsolar.com