1 Technical Specifications
| General Information | |
| Product Name | ESS Energy Storage System Cable |
| Standards | 2PfG 2642, UL4703, TUV, CE, RoHS |
| Voltage Rating | DC 1500V / AC 0.6/1kV |
| Cable Structure | Single core / Multi-core optional |
| Conductor | |
| Conductor Material | Tinned copper (anti-oxidation, corrosion-resistant) |
| Conductor Type | Class 5 flexible stranded (per IEC 60228 / EN 60228) |
| Cross Sections | 2.5mm², 4mm², 6mm², 10mm², 16mm², 25mm², 35mm², 50mm², 70mm², 95mm² |
| Max. DC Resistance at 20°C | Per IEC 60228 (varies by cross-section) |
| Insulation & Jacket | |
| Insulation Material | XLPO (Cross-linked Polyolefin) — Electron-beam cross-linked |
| Jacket Material | Special LSZH, Oil & Chemical Resistant |
| Jacket Colors | Black (standard) / Orange / Custom |
| Halogen-Free | Yes — per IEC 60754-1 / -2 |
| Low Smoke | Yes — per IEC 61034 |
| UV Resistance | Yes — per UL 4703 |
| Electrical Ratings | |
| Rated Voltage (AC) | U₀/U = 0.6/1.0 kV |
| Rated Voltage (DC) | Up to 1500V DC |
| 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 | +125°C |
| Min. Bend Radius | 4× outer diameter (fixed) / 5× (flexing) |
| Oil Resistance | Excellent — per 2PfG 2642 |
| Acid / Alkali Resistance | Yes |
| Flame Performance | Non-propagation — IEC 60332-1 / UL VW-1 |
| Design Life | 25+ years (standard accelerated aging tests, rated conditions) |
| Packaging & Logistics | |
| Packaging | Wooden drum / coil / reel / custom per request |
| Standard Length | 100m / 200m / 500m / 1000m per roll (customizable) |
| MOQ | 1,000 meters (sample order negotiable) |
| Lead Time | 10-20 working days (stock: 5-7 days) |
2 Product Overview
The ESS Energy Storage System Cable is a TUV/UL-certified cable designed specifically for battery energy storage systems (BESS). It complies with 2PfG 2642 and UL4703 standards, ensuring global acceptance across European, North American, and Australian markets.
The cable features high-purity tinned copper strands (Class 5 stranding per IEC 60228) for superior flexibility and corrosion resistance. The XLPO (cross-linked polyolefin) insulation and jacket provide outstanding thermal stability — with conductor temperature rated up to +125°C — while the special LSZH jacket formulation delivers excellent resistance to oil, acids, and alkalis commonly encountered in ESS environments.
Unlike standard photovoltaic cables, the ESS cable is engineered for the unique demands of energy storage applications: repeated charge/discharge cycling, enclosed container installations, and exposure to battery chemicals. The cable maintains stable electrical performance over 25+ years of service under standard testing and rated operating conditions (per 2PfG 2642 accelerated heat aging).
Manufactured under strict quality management by SORIVO, each production batch undergoes comprehensive testing including spark testing, partial discharge measurement, and tensile verification. For detailed company information, please visit sorivocable.com/about-us/.
3 Key Features
TUV & UL Dual Certified
Certified to 2PfG 2642 and UL4703 — accepted globally by ESS integrators, EPC contractors, and system designers.
Oil & Chemical Resistant
Special LSZH jacket formulation resists oil, acids, and alkalis, making it ideal for enclosed battery container environments.
High Temperature Rating
Rated for conductor temperature up to +125°C, providing ample safety margin under high current charge/discharge cycles.
DC 1500V Rated
Full 1500V DC rating supports modern high-voltage BESS architectures, reducing system cabling costs and enabling longer battery string configurations.
Halogen-Free, Low Smoke
LSZH composition limits toxic gas emission in fire scenarios — critical for enclosed ESS containers and indoor installations.
Extended Cross-Section Range
Available from 2.5mm² to 95mm², covering residential storage to utility-scale BESS projects with a single certified product line.
Wide Temperature Tolerance
Operates from -40°C to +125°C, suitable for extreme environments from arctic energy storage to desert solar-plus-storage plants.
25+ Year Design Life
Engineered for long-term reliability matching the typical lifespan of grid-scale and commercial BESS installations.
4 Applications
The ESS cable is designed for power transmission in battery energy storage systems and related applications:
5 FAQ
What is the difference between ESS cable and standard PV cable?
ESS cables are specifically certified to 2PfG 2642 and UL4703 with enhanced oil, chemical, and wider temperature resistance compared to standard PV1-F or H1Z2Z2-K solar cables. They are engineered for the enclosed, chemical-rich environment of battery containers where standard PV cables may degrade prematurely.
Is this cable suitable for outdoor installation?
Yes. The ESS cable is UV-resistant per UL4703 and can be installed outdoors. However, for direct burial or extended outdoor exposure, additional mechanical protection may be recommended. Please consult with SORIVO for your specific installation conditions.
What cross-sections are commonly used for BESS applications?
Typical ESS applications use 4mm² to 35mm² for battery rack interconnections and up to 95mm² for main power distribution within the BESS. The exact sizing depends on system voltage, current, and cable run length. Contact SORIVO for sizing assistance.
Does this cable meet the latest ESS safety standards?
Yes. The cable complies with 2PfG 2642 (the latest TUV standard for ESS cables) and UL4703 (North American standard for photovoltaic and storage cables). It also meets IEC 60332-1 flame retardancy, IEC 61034 low smoke, and IEC 60754 halogen-free requirements.
Can I get a sample before placing a bulk order?
Yes. SORIVO offers sample orders for qualification purposes. Standard lead time for samples is 3-5 working days. Contact our sales team with your required specifications and quantity for a customized quotation.