Shaanxi Jinshenghong Cable Co., Ltd. is one of the most reliable manufacturers and suppliers of tinned copper twin core solar dc pv cables in China. Please feel free to wholesale high quality customized products at low price from our factory. For free sample and cheap products, contact us now.
Products Description
Tinned Copper Twin Core Solar DC PV Cables (H1Z2Z2-K / IEC 62930 Standard)
This twin-core parallel photovoltaic DC cable is purpose-built for fixed and flexible DC wiring inside all types of solar power systems, rated for 1500V DC maximum operating voltage, fully manufactured to international IEC 62930 and EN 50618 PV cable standards. It integrates positive and negative conductors into one unified cable structure to simplify PV array interconnection, combiner box, charge controller and inverter wiring.
The cable adopts a 4-layer standardized construction optimized for long-term outdoor harsh environment deployment:
1.Class 5 Tinned Oxygen-Free Copper Conductor: 99.98% high-purity annealed copper strands with uniform tin coating on every filament. The tin barrier isolates copper from oxygen, salt mist and ambient moisture to prevent oxide buildup at MC4 terminals, eliminating rising contact resistance common with bare copper PV cables in coastal, tropical or high-humidity regions. Multi-fine stranded design delivers superior flexibility for tight rooftop bending and irregular mounting layouts.
2.Radiation Cross-Linked XLPO LSHF Insulation: Electron-beam cross-linked low-smoke zero-halogen polyolefin forms the primary insulation layer. Cross-linking eliminates material melting or cold flow under sustained high roof temperatures, delivering ultra-low dielectric loss and resistance to electrical tree aging.
3.Integrated Twin Core Structure: Two independent insulated cores (red positive, black negative) are extruded parallel under a shared outer sheath, eliminating the need to route two separate single PV wires and reducing conduit space occupation.
4.XLPO LSHF Outer Sheath: Matching radiation cross-linked halogen-free jacket with specialized UV stabilizer additives, resisting long-term solar irradiation, ozone cracking, hydrolysis and minor chemical erosion from soil or atmospheric pollutants. The sheath meets AD8 water absorption grade for damp buried or duct installation.
All finished twin core PV cables pass mandatory factory routine tests including 6.5kV AC 5min withstand voltage, full-length spark testing and insulation resistance measurement. Quarterly sampling undergoes third-party accelerated damp-heat (1000h, 90℃/85%RH), UV weathering and thermal cycling tests in our ISO 17025 accredited lab, guaranteeing stable electrical and mechanical performance over a certified 25-year service life under standard outdoor PV operating conditions. The tinned copper variant is strongly recommended for marine, coastal, tropical and underground PV layouts where humidity or salt exposure accelerates bare copper corrosion.
Products Complete Specifications Table
| Parameter Category | Verified Technical Data |
|---|---|
| Full Product Name | Tinned Copper Twin Core Solar DC PV Cable (H1Z2Z2-K) |
| Applicable International Standards | IEC 62930, EN 50618, TÜV 2PfG1169, CE, RoHS, UL4703 optional |
| Rated Operating Voltage | DC 1500V / AC 1000V |
| Conductor Construction | Class 5 flexible tinned annealed oxygen-free copper (IEC 60228) |
| Standard Cross-Section Sizes | 2×2.5mm², 2×4mm², 2×6mm², 2×10mm², 2×16mm², 2×25mm² |
| Insulation / Sheath Material | Electron-beam cross-linked XLPO, Low Smoke Zero Halogen (LSHF) |
| Continuous Ambient Temperature Range | -40℃ ~ +90℃ |
| Max Permissible Conductor Operating Temp | 120℃ (long-term thermal aging certified EN 60216) |
| Short-Circuit Conductor Temperature (≤5s) | 200℃ |
| Minimum Installation Ambient Temp | -15℃ (no preheating required) |
| Minimum Bending Radius (Fixed Installation) | 4 × overall cable outer diameter |
| Finished Cable AC Withstand Test Voltage | 6500V AC, hold for 5 minutes, no breakdown |
| Minimum Insulation Resistance (20℃) | ≥10¹⁴ Ω·cm |
| UV & Weather Resistance Grade | HD 605/A1 certified for permanent outdoor exposure |
| Flame Performance | Vertical flame retardant EN 60332-1, halogen-free low smoke EN 61034 |
| Water Absorption Class | AD8 (suitable for damp underground duct laying) |
| Certified Service Life | ≥25 years under standard outdoor PV operating conditions |
| Standard Packaging | 100m/500m plastic coils, export fumigated wooden steel drums |
| Custom Options | Custom cut lengths, printed project logos, alternative sheath materials (PVC) |
Core Technical Features
1.Anti-Corrosion Tinned Copper Conductor for Stable Long-Term Conductivity Every individual copper strand is fully electroplated with uniform tin coating, forming an impermeable protective barrier against oxidation, salt mist and humidity. Unlike bare copper PV cables that develop insulating copper carbonate patina at crimped MC4 terminals within 1–3 years in coastal climates, tinned copper maintains consistent low contact resistance to avoid hotspots, power loss and circuit failure over 25 years of operation.
2.Labor-Saving Integrated Twin Parallel Core Design Combines positive and negative PV circuits into one single cable, halving the number of wires to route, cut, strip and terminate during installation. Reduces conduit space demand, speeds rooftop wiring by up to 40%, and minimizes loose wiring clutter in combiner boxes and inverter cabinets for both residential and utility PV projects.
3.High-Temperature Radiation Cross-Linked XLPO Material Electron-beam cross-linking modifies XLPO molecular structure to eliminate thermoplastic flow. The insulation and sheath do not soften or melt at peak rooftop temperatures, resisting thermal aging, electrical tree and water tree degradation far better than ordinary PVC insulation. LSHF composition eliminates toxic halogen gas emission during fire events for rooftop, commercial and indoor PV installations.
4.Full-Spectrum Outdoor Environmental Resistance Formulated with UV stabilizer, anti-ozone and anti-hydrolysis additives to withstand continuous direct sunlight, seasonal temperature swings, rain, snow and weak soil chemicals. Passes 1000-hour accelerated UV weathering testing without sheath cracking, discoloration or insulation performance decay.
5.Superior Mechanical Flexibility & Abrasion Resistance Class 5 multi-strand tinned copper delivers exceptional bend tolerance for complex rooftop contours, tight cable tray routing and frequent installation rework. Dense XLPO outer jacket provides robust abrasion resistance during pulling through conduits and trenches, reducing on-site insulation damage and rejection rates.
Zero-Defect Multi-Stage Factory Quality Verification Every production batch undergoes three layers of testing: raw copper & XLPO incoming inspection, real-time online spark detection during extrusion, and finished cable full electrical performance testing. Third-party TÜV type test reports are supplied for all bulk orders to meet tender and project inspection requirements.
Industry Applications & Typical Laying Scenarios
Core Application Sectors
Residential rooftop photovoltaic systems (household off-grid & grid-tied solar arrays)
Commercial & industrial rooftop PV power plants, factory distributed solar generation
Utility-scale ground-mounted solar farms, floating photovoltaic power stations
Off-grid energy storage systems: RV, caravan, marine yacht, remote mountain solar power supply
Agricultural solar greenhouses, irrigation solar pumping DC wiring
Coastal, island and tropical PV projects with high salt mist & humidity exposure
Municipal public building solar systems, fire-sensitive low-smoke indoor PV layouts
Typical Installation Scenarios
Exposed rooftop surface routing under direct sunlight
Laying inside HDPE cable ducts, plastic cable trays and wall conduits
Shallow underground burial with fine sand backfill (no sharp rock contact)
Connection between PV modules, string combiner boxes, DC charge controllers and solar inverters
Marine vessel solar power wiring (salt air, high humidity environment)
Temporary mobile solar equipment and portable solar generator interconnections
why choose us
why choose our products
1. Full-Chain Quality Control & ISO 17025 Accredited Testing Lab
JSH Cable operates an in-house professional cable testing laboratory certified ISO/IEC 17025, equipped with high-voltage withstand testers, UV weathering chambers, thermal aging ovens and damp-heat test equipment. All raw tinned copper rods and XLPO compounds pass strict incoming lab inspection; extrusion, stranding and jacketing lines feature real-time thickness monitoring to avoid eccentricity. 100% of finished twin core PV cables complete full routine electrical testing, while quarterly sampling undergoes complete TÜV-standard type tests to eliminate hidden quality risks for large solar EPC and distribution clients.
2. Premium Tinned Copper Raw Material Optimized for PV Harsh Environments
We exclusively adopt 99.98% oxygen-free copper rod with full uniform tin electroplating on every fine strand, rejecting thin or partial tin coating that fails salt mist testing. The matched imported anti-water-tree XLPO compound delivers consistent insulation performance across wide temperature fluctuations, and we never mix recycled plastic fillers that shorten cable service life. Our tinned conductor variant solves the common industry pain point of terminal oxidation failure in coastal PV projects, lowering clients' long-term maintenance and replacement costs.
3. Optimized Twin-Core Design Reduces Total PV Installation Cost
Our integrated dual-core structure cuts field wiring labor time and conduit material consumption compared to purchasing two separate single PV cables. The balanced core layout prevents twisting during pulling, while flexible Class 5 tinned strands reduce stripping and crimping difficulty for installers. For EPC contractors and solar distributors, this design lowers overall project construction expenditure without compromising DC transmission safety or efficiency.
4. Global Standard Customization Capacity for All Regional PV Markets
We support flexible OEM/ODM customization to match international regional requirements: interchangeable conductor sizes, custom length cutting, project-specific outer sheath printing, optional PVC or LSHF jacket materials, and dual certification packages (TÜV + UL/AS/NZS). Our cables fully comply with IEC, EN, VDE and UL standards to serve Europe, Southeast Asia, Australia, Middle East, Africa and Latin American solar markets, with tailored documentation for tender submission.
5. Large-Scale Production & Fast Reliable Lead Time
We run 8 dedicated electron-beam cross-linked PV cable production lines with a monthly output capacity exceeding 3,500km of twin core solar cables. Standard size inventory (2×4mm², 2×6mm²) ships within 5–7 working days; bulk orders above 100km receive dedicated production scheduling to shorten lead time and avoid solar project construction delays. Export fumigated wooden drum packaging complies with international sea and air freight standards.
6. Complete Professional Technical Support for B2B Solar Buyers
We provide complimentary full technical document packages for all orders: detailed datasheets, TÜV/IEC/CE third-party test certificates, factory ISO audit credentials, installation laying guidelines, salt mist test records and tender qualification files. Our dedicated PV electrical engineering team offers free ampacity calculation, cable sizing consultation and layout optimization advice for grid-tied, off-grid and utility-scale solar projects at no extra cost.
FAQ
01.Full-Chain Quality Control & ISO 17025 Accredited Testing Lab
02.Premium Tinned Copper Raw Material Optimized for PV Harsh Environments
03.Optimized Twin-Core Design Reduces Total PV Installation Cost
04.Global Standard Customization Capacity for All Regional PV Markets
05.Large-Scale Production & Fast Reliable Lead Time
Our address
Fulien Building, Sanqiao Subdistrict, Weiyang District, Xi'an City, Shaanxi Province
Phone Number
+86 18802926539
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