Leoni BETAflam SOLAR 125 Flex UL/EN Power DC String Cable
Leoni BETAflam SOLAR 125 Flex
SOLAR Cables
UL/EN Power DC String Cable
The BETAflam Solar 125 flex UL/EN manufactured by Leoni is a flame-retardant, halogen free, waterproof module and string cable. This solar cable, tested and certified according to EN50618 and UL 4703 (2000V), is also characterized by its durability (> 25 years) and its resistance to the effects of ozone, UV and hydrolysis.
ETAflam Solar is also suitable for direct burial and can withstand high temperatures due to high quality, temperature stable and electron-beam cross linked polymer which is double insulated for photovoltaic power applications.
BETAflam Solar 125 flex UL/EN is one of the few certified photovoltaic power cables on the market which are best for floating solar systems.
BETAflam SOLAR 125 Flex
Cable Advantages
- EN50618 & UL 2000V approval
- Electron-beam cross-linked compounds
- UV, ozone and hydrolysis resistant
- High temperature resistance, the materials do not melt or flow
- Very long service life*, good cold flexibility
- Compatible to all popular connectors
- Improved encapsulation properties
Leoni BETAflam SOLAR 125 Flex
Technical Data of Cable
Cable Construction | |
Conductor | Tinned fine copper strands acc. to VDE 0295 / IEC 60228, Class 5 |
Insulation | XLPO, flame retardant, halogen free, electron-beam cross-linked |
Jacket | XLPO, flame retardant, halogen free, electron-beam cross-linked, UV and ozone resistant |
Jacket Colour | ● black |
Electrical Characteristics | |
Rated value | U0 1500 V DC / EN50618 (max. permitted voltage U0 1800 V DC) UL 2000 V |
Thermal Characteristics | |
Operating temperature | –40 °C up to +120 °C –40 °F up to +248 °F |
Max. short circuit temp. | Ambient temperature min. 25 years** |
Bending radius | |
Fixed installation | > 4 × |
Occasionally moved | > 5 × |
Standards / Material Properties | |
Fire performance | IEC 60332-1; UL 1581 1060 / VW1 |
Smoke emission | IEC 61034; EN 61034-2 |
Low fire load | DIN 51900 |
Approvals | EN50618; H1Z2Z2-K, UL4703 PV wire, cTÜVus |
Application standards | NEC 2008 / UL PV wire; EN 50618, IEC 62930 |
Nominal cross section | Conductor ∅ | Outer ∅ | Resistance max. at 20°C | Weight | Fire load | Order no. | |
n × mm² | mm | mm | mΩ/m | kg/km | kWh/m | ||
1 × 2.5 | 14 AWG | 1.95 | 6.85 | 8.21 | 67 | 0.187 | 310810 |
1 × 4 | 12 AWG | 2.45 | 7.05 | 5.09 | 86 | 0.213 | 310811 |
1 × 6 | 10 AWG | 3.00 | 7.60 | 3.39 | 109 | 0.238 | 310812 |
1 × 10 | 8 AWG | 3.90 | 9.70 | 1.95 | 155 | 0.340 | 310813 |
1 × 16 | 6 AWG | 5.00 | 10.80 | 1.24 | 224 | 0.605 | 312269 |
1 × 25 | 4 AWG | 6.20 | 12.00 | 0.79 | 310 | 0.704 | 312297 |
1 × 35 | 2 AWG | 7.70 | 13.50 | 0.56 | 418 | 0.871 | 312298 |
1 × 50 | 1 AWG | 9.70 | 16.80 | 0.39 | 617 | 1.347 | 312299 |

Solar Cable | Leoni BETAflam SOLAR 125 Flex UL/EN Power DC String Cable
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Thorne & Derrick supply LV HV Solar Cables, Accessories, Substation & Electrical Eqpt to EPC’s & High Voltage Jointing Contractors working on the design, construction and maintenance of UK, European and international solar projects. Based in the UK, we are highly customer responsive and absolutely committed to providing a world-class service. Since 1985, we have provided expert technical support and express delivery from extensive UK stocks to world-wide destinations.