This double-protection black twin core solar cable in 16 mm² per conductor features a dual-layer sheath construction — an inner XLPO core insulation layer plus a second reinforced XLPO outer jacket — providing exceptional mechanical protection for large cross-section DC main cables that are exposed to physical handling, ground contact, or direct burial in solar farm installations. The low eccentricity construction ensures uniform insulation wall thickness around each conductor, eliminating the insulation thin-spots that cause premature dielectric failure in inferior cables.
At 16 mm², this cable handles currents up to approximately 85A in free air — suitable as a DC main cable carrying the combined output of multiple parallel string combiner boxes to the central string inverter in large utility-scale solar installations. The twin core construction simplifies installation by combining the positive and negative DC main conductors in a single cable with a common outer jacket. Black outer sheath with print marking for polarity and cable identification.
| Parameter | Value |
|---|---|
| Configuration | 2×16 mm² |
| Conductor | Class 5 tinned annealed copper |
| Inner Insulation | XLPO (double layer) |
| Outer Jacket | Reinforced XLPO |
| Rated Voltage DC | 1500V DC |
| Free Air Ampacity | ~85A at 90°C |
| Ambient Temp. | ‑40°C to +90°C |
| Standard | EN 50618, IEC 62930 |
Eccentricity is the off-centre positioning of the conductor within the insulation — causing one side of the insulation to be thinner than specified. In high-voltage DC cables, thin insulation spots create localised electric field stress concentration that accelerates partial discharge aging and can cause premature insulation breakdown over a 25-year service life. Low eccentricity cables manufactured under tight process controls maintain uniform insulation wall thickness — critical for large cross-section DC main cables that are difficult and costly to replace after system commissioning.
