Perlight Solar · Solar panel model
Perlight BC Delta
Perlight BC Delta is a current single-glass, back-contact solar-panel family with three rated-power variants in a shared frame.
Specifications
| Specification | Value |
|---|---|
| Rated power (W) | 465, 470 or 475 |
| Cell type | half-cell monocrystalline HPBC (hybrid passivated back contact) 2.0 |
| Module efficiency (%) | 22.78 at 465 W, 23.02 at 470 W and 23.27 at 475 W |
| Dimensions (mm) | 1800 x 1134 x 30 |
| Power temperature coefficient (%/°C) | -0.29 |
| Nominal operating cell temperature (°C) | 45 ±2 |
| First-year degradation (%) | 1.5 |
| Product warranty (years) | 30 |
| Performance warranty (years) | 30 |
| Performance-warranty end value (%) | 88.9 |
| Glass construction | 3.2 mm coated tempered front glass |
| Frame | anodised aluminium |
| Weight (kg) | 21.6 |
| Junction box | IP68 ingress-protection code with 3 diodes |
| Connector arrangement | Stäubli MC4 EVO 2A |
| Operating-temperature range (°C) | -40 to 85 |
| Mechanical load (Pa) | front 5400 and back 2400 |
| Hail test | 25 mm diameter at 23 m/s |
The current UK range calls this family BC Delta, the datasheet title calls it Delta Plus and its type label is PLM-475H8NG-108. Its cell design is HPBC (hybrid passivated back contact) 2.0.
Back-contact layout and variants
The electrical contacts are moved behind the cells, leaving no busbars visible across the front.
The datasheet uses PLM-475H8NG-108 above all three power columns:
| Type label | Rated power | Module efficiency |
|---|---|---|
| PLM-475H8NG-108 | 465 W | 22.78% |
| PLM-475H8NG-108 | 470 W | 23.02% |
| PLM-475H8NG-108 | 475 W | 23.27% |
The dimensions, weight, temperature coefficient and mechanical specification are shared. Because the same printed type label spans three ratings, the module’s rating label or order record must also show which wattage applies.
Single-glass construction
Black Grid uses a different, dual-glass construction. This distinction affects which datasheet and mechanical record apply even where the two families appear in the same current UK catalogue.
The specified temperature coefficient records the module’s output response to changing cell temperature. The warranty degradation points describe a different, long-term performance allowance.
Warranty and current record
The warranted output is 98.5% after the first year and 88.9% in year 30. The product and performance periods remain subject to the warranty terms applying to the supplied module.
BC Delta 475 W and the PLM-475H8NG-108 family were current on 23 July 2026.
Related entries
Manufacturer and reference sources
Brand
Reference type
Solar panel model
Last reviewed
31 Jul 2026
Current status
Current in the manufacturer's UK range.