Aug. 12, 2025
When your installation requires robust, flexible, and heavy-duty power distribution—whether for mobile generators, industrial machinery, event power, or construction hoists—H07RN‑F 70 mm² cable is engineered to excel. Our 70 mm² variant stands at the pinnacle of flexible rubber cable design, with specifications that include:
Class 5 fine-stranded copper conductor for maximum flexibility
EPR insulation (Type EI4) and PCP neoprene sheath (Type EM2) for mechanical, weather, and oil resistance
Voltage rating of 450/750 V, with test voltage to 2.5 kV
Temperature range of –25 °C to +60 °C (flexible) and up to +85 °C when fixed
Minimum bend radii: 4× OD static, 7.5× OD rolling, and 5× OD drum winding nexans.fr+7shop.helukabel.com+7tanocable.com+7
With a nominal outer diameter of about 18.6–23.3 mm and a current rating around 254 A in open-air installations at 30 °C ambient, this cable reliably handles high-power applications while remaining maneuverable on reels and drum carts Reddit+13nexans.de+13shop.helukabel.com+13.
Heavy-Duty Mobile Power
Trailing leads for diesel generators, site transformers, or portable substations—ideal for harsh construction and industrial sites.
Industrial Machinery Feeds
Powering cranes, compressors, welders, or processing equipment that demands high current and frequent repositioning.
Events, Film & AV Power Distribution
Stage mains, power towers, and AV distribution trees benefit from high flexibility and safety-certified performance.
Marine & Port Installations
Salt-tolerant EPR and neoprene sheath withstand coastal exposure, oil, and deck abrasion in docking facilities.
Temporary Utility Set-ups
Quick deployment interconnects for disaster recovery, outdoor events, or mobile substations where uptime matters.
| Feature | Specification & Benefit |
|---|---|
| Nominal Cross‑Section | 70 mm² copper – ~254 A in air at +30 °C; efficient heavy-current capacity |
| Conductor | Class 5 fine-stranded copper – tight bend radii, easy drum handling |
| Insulation/Sheath | EPR & PCP Neoprene – excellent oil, ozone, temperature, and UV resistance |
| Voltage Rating | 450/750 V AC; tested at 2.5 kV |
| Thermal Performance | Operation to +60 °C flexible, +85 °C fixed; short-circuit up to +200 °C |
| Bend Radius | ≥ 4× OD static; ≥ 7.5× OD rolling; ≥ 5× OD on reel |
| Fire & Safety Standards | Flame retardant to IEC 60332‑1; HAR/EAC/CE certified |
| Outer Diameter & Weight | Approx. 19–23 mm OD; 895–960 kg/km depending on core configuration |
Single-Core vs. Multi- Core
Use 1×70 mm² for direct feed applications; choose 3G70 mm² for three-phase plus earth supplies in mobile transformer setups.
Installation Conditions
For continuous flex on drums or reels, adhere to the bending radius specs above; fixed runs allow slightly tighter bends.
Environment & Hazards
Rated for outdoor use in humid, oily, or sun-exposed conditions. Tinned copper is available for saltwater or marine environments.
Termination & Value-Adds
Pre-attached lug ends or glands speed installation. Colored jackets or printed legends improve identification in multi-run feeders.
Observe Bend Radius
Manual tensions across drum or course rolls should never force cables tighter than specified ratios.
Secure Cable Support
Use compliant clamps on reels and strain reliefs where cable enters motors or panels.
Pre-Use Testing
Perform continuity and insulation-resistance tests (≥ 50 MΩ·km) before first deployment.
Routine Inspection
Check for cuts, abrasions, or jacket fatigue in high-traffic or oil-laden pathways every 3–6 months.
Depth of Engineering Expertise
Global footprint with ISO 9001/14001-certified manufacturing—our compound and flex specs tuned to industrial real-world conditions.
Fully Certified & Tested
Every batch comes with continuity, high‑pot, oil/abrasion, and fire test certification. Load rating and resistance data exactly match published standards.
Flexible Delivery & Support
Stocked single- and multi-core 70 mm² available with custom lengths and termination services. Global logistics ensure timely delivery to your site.
Lifetime Support & Warranty
We stand behind every reel with a two-year warranty plus preventive maintenance programs and technical hotlines.
If you need rugged, flexible power infrastructure built for tough environments, our H07RN‑F 70 mm² cable ranges deliver:
High current capability
Superior flex performance
Resistance to oil, weather, and mechanical stress
Full compliance with harmonized rubber-cable standards
Contact us today for custom spec sheets, price breakdowns, and technical support. Let us pair you with the right H07RN‑F 70 mm² solution for your application.
