1 Technical Specifications
| General Information | |
| Product Model | H1Z2Z2-K (EN 50618) |
| Cross Section | 25 mm² (also available: 1.5 / 2.5 / 4 / 6 / 10 / 16 / 35 mm²) |
| Cable Structure | 1 × 25 mm² (single core) |
| Standard | EN 50618:2014, IEC 62930 |
| Conductor | |
| Conductor Material | Tinned copper (anti-oxidation, corrosion-resistant) |
| Conductor Type | Class 5 flexible stranded (per IEC 60228 / EN 60228) |
| Conductor Structure | 323 strands × 0.31 mm |
| Max. DC Resistance at 20°C | ≤ 0.780 Ω/km |
| Insulation & Jacket | |
| Insulation Material | XLPO (Cross-linked Polyolefin) — Electron-beam cross-linked |
| Jacket Material | XLPO (Cross-linked Polyolefin) — LSZH, UV-resistant |
| Approx. Outer Diameter | 11.2 mm |
| Jacket Colors | Black (standard) / Red |
| Halogen-Free | Yes — per IEC 60754-1 / -2 |
| Low Smoke | Yes — per IEC 61034 |
| Electrical Ratings | |
| Rated Voltage (AC) | U₀/U = 0.6/1.0 kV (600/1000V AC) |
| Rated Voltage (DC) | 1500V DC (up to 1800V DC between conductor and earth) |
| Rated Current | 125 A (single cable in free air at 60°C ambient) |
| Test Voltage | 6.5 kV AC, 50 Hz, 10 minutes |
| Insulation Resistance | ≥ 800 MΩ·km at 20°C |
| Temperature & Environmental | |
| Operating Temperature Range | -40°C to +90°C (ambient) |
| Max. Conductor Temperature | +120°C (20,000 hours rated life) |
| Max. Short-Circuit Temperature | +250°C (max 5 seconds) |
| Minimum Bend Radius | 5× outer diameter (fixed) |
| UV Resistance | Per EN 50618 / HD 605 |
| Ozone Resistance | Per EN 50396 |
| Water Performance | AD8 rating (permanent immersion resistance) |
| Flame Performance | Non-propagation — IEC 60332-1 / EN 60332-1 |
| CPR Classification (EU) | Cca (per EN 50575) |
| Design Life | 25+ years (at 90°C continuous operation) |
| Packaging & Logistics | |
| Packaging | Wooden drum / coil / custom per request |
| Standard Length | 100m / 200m / 500m per roll (customizable) |
| MOQ | 500 meters (sample order negotiable) |
| Lead Time | 7-15 working days (stock: 3-5 days) |
2 Product Overview
The H1Z2Z2-K 25mm² solar cable is a TUV Rheinland certified photovoltaic cable per EN 50618:2014, engineered for high-current DC power transmission in large-scale solar PV installations. Its 25mm² cross-section provides ample ampacity for main DC trunk runs, combiner box to inverter connections, and high-power string combining in utility-scale projects.
The cable features a high-purity tinned copper conductor with Class 5 flexible stranding (323 strands × 0.31mm per IEC 60228), delivering a low DC resistance of just 0.780 Ω/km for minimized system power loss over long distances. The fine stranding configuration ensures excellent flexibility despite the large cross-section, facilitating installation in cable trays, conduits, and trench layouts.
The double-layer XLPO (cross-linked polyolefin) insulation and jacket system is produced via electron-beam cross-linking, delivering outstanding thermal stability from -40°C to +120°C conductor temperature, UV resistance, ozone resistance, and mechanical durability over 25+ years. The LSZH jacket limits toxic emissions in fire conditions — critical for commercial and utility installations. With a 125A current rating at 1500V DC, this cable is ideal for high-power DC trunk runs and central inverter connections.
Manufactured to rigorous quality standards under the management of SORIVO, each production batch undergoes 6.5 kV AC dielectric testing and 10 kV AC spark testing. The cable is engineered for 25+ years of service life in utility-scale solar farms, commercial rooftops, and energy storage systems. For detailed company information, please visit sorivocable.com/about-us/.
3 Key Features
TUV Rheinland Certified
Certified to EN 50618:2014 — widely accepted by European EPC contractors, installers, and utility-scale project developers.
125A High Current Rating
Rated at 125A continuous current, providing ample ampacity for main DC trunk runs, high-power string combining, and central inverter feeds.
Low DC Resistance
With ≤0.780 Ω/km at 20°C, the 25mm² conductor minimizes resistive losses over long cable runs, improving overall system efficiency.
Dual XLPO Insulation + Jacket
Electron-beam cross-linked XLPO provides proven thermal stability, UV tolerance, and mechanical toughness rated for 25+ years of outdoor exposure.
DC 1500V Rated
Rated up to 1500V DC, supporting high-voltage PV architectures with extended string lengths and reduced BOS costs.
Halogen-Free, Low Smoke
LSZH construction limits toxic gas and smoke emission in fire scenarios — essential for commercial and industrial installations.
Wide Temperature Tolerance
Reliable operation from -40°C to +120°C conductor temperature, suitable for extreme desert, alpine, and tropical environments.
AD8 Water Resistance
Rated AD8 for permanent immersion resistance per EN 50618, enabling direct burial and installation in flood-prone areas without additional conduit.
4 Applications
This cable is designed for high-current DC power transmission in photovoltaic installations: