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Ⅰ. Product Overview
This single-core tinned copper solar DC cable is engineered for outdoor photovoltaic systems, featuring high-purity tinned copper conductors and weather-resistant sheaths. TÜV certified, it ensures reliable DC power transmission in environments ranging from -40°C to +90°C. The tin plating enhances oxidation and corrosion resistance, making it ideal for humid, salt-laden, or high-moisture PV projects.
Ⅱ. Technical Specifications
2.1 Electrical Parameters
Parameter | Typical Value |
Conductor Structure | Single-core tinned copper (ASTM B33) |
Cross-Sectional Area | 1.5/2.5/4/6/10 mm² (optional) |
Rated Voltage | 1000V DC (compliant with IEC 62930) |
Rated Current (90°C) | 25A (2.5 mm²) / 32A (4 mm²) |
DC Resistance (20°C) | ≤7.41Ω/km (2.5 mm²) |
Insulation Resistance | ≥100MΩ @ 500V DC |
2.2 Physical & Environmental Parameters
Parameter | Details |
Sheath Material | Cross-linked polyethylene (XLPE) + UV stabilizer |
Color | Black (standard) / Red (positive pole optional) |
Operating Temperature | -40°C to +90°C |
Minimum Bend Radius | 4x cable diameter |
Weather Resistance | Passed 1000-hour xenon arc aging test |
Flame Retardancy | IEC 60332-1 (vertical combustion self-extinguishing) |
Certifications | TÜV EN 50618, IEC 62930, RoHS |
Ⅲ. Key Advantages
3.1 Tinned Copper Conductor Features
Corrosion Resistance: Tin plating forms an oxidation barrier, extending service life by 30%+ in coastal, industrial, or high-humidity environments.
Electrical Reliability: Tin plating reduces contact resistance, lowering connection point temperature rise by 15% compared to bare copper.
Welding Compatibility: Direct welding without pre-treatment, suitable for quick on-site installations.
3.2 Weather-Resistant Sheath Design
UV Protection: Sheath contains nano-level UV absorbers, retaining ≥85% tensile strength after 1000 hours of aging.
Extreme Temperature Tolerance: Remains flexible at -40°C and stable at +90°C for long-term operation.
Crack Resistance: Passed 5000 thermal cycles (-40°C to +90°C) without sheath cracking.
3.3 TÜV Certification Compliance
Safety Standards: Meets EN 50618 requirements for electrical, mechanical, and environmental performance of PV cables.
Environmental Certification: Halogen-free and lead-free, compliant with RoHS 2.0 Directive.
Service Life Commitment: TÜV certification supports ≥20 years of outdoor service life.
Ⅳ. Application Scenarios
Scenario Type | Typical Applications |
Residential PV Systems | Rooftop module series connection (1-10kW), inverter wiring |
Commercial & Industrial Projects | Large rooftop power plants (50-500kW), workshop PV systems |
Coastal/High-Humidity Areas | Island PV power stations, aquaculture PV projects |
Industrial Pollution Environments | PV cabling for chemical plants, metallurgical zones |
Off-Grid Energy Storage Systems | Solar charging stations, RV/marine PV connections |
Ⅴ. Installation & Selection Guide
5.1 Selection Recommendations
System Power | Recommended Cross-Section (2.5mm² cable example) |
≤5kW | Use 2.5mm² for lengths ≤30m |
5-10kW | Use 2.5mm² for lengths ≤20m; 4mm² for longer runs |
5.2 Installation Notes
Anti-Corrosion Treatment: Stainless steel cable ties are recommended in coastal areas to avoid copper-iron electrochemical corrosion.
Temperature Compensation: Derate current by 8% for every 10°C increase above 40°C.
Polarity Identification: Black sheaths typically denote negative (-), red sheaths for positive (+).
Grounding Requirements: Tinned copper conductors can directly serve as grounding loops, complying with local electrical codes.
Ⅵ. Testing & Certification Documents
Core Test Items
Salt spray test (5% NaCl solution, 1000 hours without conductor oxidation)
Ozone aging test (50pphm, 40°C × 168 hours without sheath cracking)
Acid/alkali resistance test (immersed in pH=3~11 solutions for 1000 hours with stable performance)
Certification List
TÜV EN 50618 test report
Material Safety Data Sheet (MSDS)
Third-party aging performance test report
Ⅶ. Packaging & Warranty
Standard Packaging: 100m/roll (plastic film + carton), 500m/1000m (metal reel)
Warranty Terms: 10-year product quality guarantee; free replacement for defects due to material flaws.
Technical Support: Provides cable voltage drop calculation tools, installation videos, and on-site training.