Service Hotline
+86 13564958513
TÜV Certified Single and Twin Core Solar Cables
I. Certification Standards
TÜV certified single and twin core solar cables comply with rigorous testing and safety requirements set by TÜV Rheinland. The most relevant standard is 2PFG 1169, which ensures the cables meet high safety and performance criteria for photovoltaic (PV) systems. This certification guarantees compliance with international norms for electrical safety, environmental durability, and long-term reliability.
II. Structure and Materials
2.1 Conductor
Material: Tinned copper wires (Class 5 stranded) for excellent conductivity and corrosion resistance.
Standards: Conforms to EN 60228 and IEC 60228 for stranded conductor specifications.
2.2 Insulation Layer
Material: Cross-linked polyethylene (XLPE) or cross-linked polyolefin (XLPO), providing:
Superior electrical insulation.
High thermal stability (resistant to -40°C to +90°C).
Mechanical strength to withstand installation stress.
2.3 Sheath
Material: Halogen-free, electron-beam cross-linked polyolefin copolymer, offering:
Flame retardancy (complies with IEC 60332-1-2).
UV resistance (suitable for long-term outdoor exposure).
Ozone and weather resistance to extend service life.
III. Product Characteristics
Low-Smoke Halogen-Free (LSZH): Reduces toxic fume emission in case of fire, ensuring safety in enclosed spaces.
Extreme Temperature Resistance: Performs reliably in harsh environments, including:
Cold climates (down to -40°C).
High-temperature zones (up to +90°C).
Abrasion and Friction Resistance: Robust sheath protects against mechanical damage during installation and operation.
Stable Connection Performance: Minimizes failure rates in PV systems, even in challenging outdoor settings (rooftops, deserts, lakeside areas).
IV. Voltage Ratings and Specifications
4.1 Voltage Classes
AC Rating: 0.6/1 kV.
DC Rating: Up to 1.8 kV (suitable for high-voltage PV systems).
4.2 Cross-Sectional Areas
Single Core: 1.5 mm² to 35 mm².
Twin Core: Common specifications include 2x4 mm², 2x6 mm², etc.
V. Application Scenarios
PV Module Interconnections: Connecting leads from solar panels and busbar connections between modules.
Array Wiring: Interconnecting strings within a PV array and between arrays.
Battery to Inverter Links: Wiring between energy storage systems and inverters in off-grid or hybrid setups.
Utility-Scale Projects: Suitable for large solar farms and commercial rooftop installations.
VI. Installation and Compliance
Flexibility: Designed for easy routing in conduits, trays, or direct burial (with appropriate protection).
Termination: Compatible with standard PV connectors (e.g., MC4, H4) and crimp terminals.
Global Compliance: Meets additional standards such as IEC 62930, UL 4703, and EN 50618 for international deployments.
VII. Comparison: Single Core vs. Twin Core
Feature | Single Core Cable | Twin Core Cable |
Structure | Single insulated conductor | Two insulated conductors in a shared sheath |
Installation | Requires separate positive/negative cables | Integrates both poles for faster wiring |
Ideal Use | High-voltage systems, flexible routing | Commercial projects prioritizing labor efficiency |
Common Sizes | 6 mm², 10 mm² for large arrays | 2x4 mm², 2x6 mm² for medium systems |
TÜV certified single and twin core solar cables provide reliable, safe, and durable solutions for PV installations. Their advanced design and rigorous certification make them suitable for diverse applications, from residential rooftops to utility-scale solar farms. Always consult the manufacturer’s datasheet for specific installation guidelines and regional code compliance.