H1Z2Z2-K 2×4mm² Twin Core Solar PV Cable

Product Structure & Component Functions

The H1Z2Z2-K 2×4mm² solar cable adopts a standardized twin-core integrated structure, consisting of three core functional layers. Each component is precisely engineered to ensure electrical safety, mechanical durability, and environmental adaptability:

• Class 5 Flexible Tinned Copper Conductor:Made of high-purity oxygen-free tinned copper with multi-strand twisted flexible structure (Class 5 flexibility per EN 50618). The tinned copper surface effectively prevents oxidation, corrosion, and tin shedding in long-term outdoor humid and ultraviolet environments. It ensures ultra-low electrical resistance and stable current transmission, reducing power loss during long-distance PV power transmission. The flexible design supports repeated bending and rolling, facilitating flexible installation in complex wiring scenarios.

• XLPO Insulation Layer (Low Smoke Zero Halogen):The inner insulation layer adopts irradiated cross-linked polyolefin (XLPO) material with LSZH formula. After high-energy electron beam radiation cross-linking treatment, it features excellent electrical insulation performance, effectively isolating current leakage and resisting high-voltage breakdown up to 6500V test voltage. This layer is flame-retardant, non-toxic, and smoke-free, avoiding harmful halogen gas release during combustion. It also resists high-temperature aging and low-temperature brittleness, maintaining stable insulation performance in extreme temperature changes.

• LSZH Outer Sheath:The outer protective sheath uses high-strength cross-linked polyolefin material, matching the insulation layer's low smoke zero halogen characteristics. It provides comprehensive mechanical protection against external friction, extrusion, and tensile damage during installation and operation. Meanwhile, it boasts strong UV resistance, ozone resistance, and weather resistance, effectively resisting solar radiation, wind, rain, and temperature erosion. It prevents cable cracking, aging, and performance degradation during long-term outdoor exposure, extending the overall service life of the cable.

Core Product Advantages

• Ultra-High Electrical Stability: High-purity tinned copper conductor ensures low resistivity and efficient power transmission, minimizing PV system power loss. It supports stable operation under 1500V DC high voltage, fully adapting to mainstream high-power solar system designs.
• Extreme Environmental Adaptability: Wide working temperature range of -40°C to +90°C, withstanding severe cold, high heat, and seasonal temperature differences. Professional UV and ozone resistance eliminates aging and cracking issues caused by long-term outdoor exposure.
• Safety & Environmental Protection: Full LSZH material formula produces no toxic halogen gas, low smoke density during combustion, and excellent flame retardancy. It improves visibility and safety in case of fire, complying with EU environmental protection and construction safety standards.
• Durable & Long Service Life: Radiation cross-linking process enhances material structural stability, with anti-aging, anti-wear, and anti-corrosion properties. The product achieves a 25+ year service life under standard outdoor operating conditions, reducing system maintenance and replacement costs.
• Flexible & Easy Installation: Class 5 flexible structure supports bending, coiling, and laying in narrow spaces. The integrated twin-core design simplifies wiring procedures, saves construction time, and adapts to diverse installation methods (duct laying, open laying, fixed outdoor wiring).
• Full Standard Certification: Strictly compliant with EN 50618, IEC 62930, TUV, and RoHS standards, with complete qualification certifications, suitable for global PV project bidding and construction requirements.