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Twin core PV cables are essential in photovoltaic (PV) systems, ensuring efficient and safe DC power transmission from solar panels. With two insulated conductors in a single outer sheath, they combine installation simplicity, reliable performance, and high - quality build.
I. Diverse Specifications
Common cross - sectional areas per core are 1.5mm², 2.5mm², 4mm², 6mm², and 10mm². Smaller ones like 1.5mm² and 2.5mm² suit low - power uses such as small residential add - ons or solar devices. Larger ones, 6mm² and 10mm², are for high - power scenarios like large rooftops, commercial buildings, and utility - scale solar farms.
II. High - Quality Materials and Manufacturing
2.1 Superior Conductors
Made from high - purity oxygen - free copper (≥99.97%), often tin - plated, conductors offer good conductivity, reducing resistance. Tin - plating protects against oxidation, maintaining performance in harsh outdoor conditions.
2.2 Advanced Insulation and Sheath
Inner Insulation: XLPE or XLPO provides reliable electrical insulation, preventing leakage and short circuits. It allows operation from - 40°C to + 90°C, with short - term tolerance to + 120°C.
Outer Sheath: UV - stabilized, halogen - free TPE resists UV, moisture, abrasion, and mild chemicals, extending cable lifespan.
2.3 Rigorous Processes
Manufacturing involves strict quality control. Precision machinery ensures uniform insulation and sheath thickness, consistent conductor stranding, and accurate dimensions for stable performance.
III. Key Performance Features
3.1 Efficient Power Transmission
Low - resistance conductors and quality insulation minimize power loss. Current - carrying capacity varies by size; e.g., 4mm² per core can carry 32A per core, 64A in total.
3.2 Long Lifespan
Premium materials and precise manufacturing give a 15 - 30 - year service life, reducing replacement and maintenance costs.
3.3 Simplified Installation
The twin - core design cuts installation time as installers handle one cable instead of two. Flexibility allows easy routing, and integrated conductors reduce polarity connection errors.
3.4 High Safety Standards
Flame - retardant and compliant with IEC 60332 - 1 - 2, they prevent fire spread. Proper insulation safeguards against electric shocks.
IV. Stringent Quality Certifications
Certifications like TÜV EN 50618, IEC 62930, UL 4703, and RoHS prove compliance with safety, performance, and environmental standards. TÜV EN 50618 ensures suitability for PV systems.
V. Extensive Application Scenarios
5.1 Residential Solar Systems
Small - gauge cables suit small homes, while larger ones meet the needs of big residential rooftops with high - power arrays.
5.2 Commercial and Industrial PV Projects
They handle high power in commercial buildings, transmitting electricity to infrastructure or the grid for cost savings and sustainability.
5.3 Utility - Scale Solar Farms
Crucial for connecting many panels and long - distance power transmission in large solar farms.
5.4 Off - Grid and Remote Area Power Systems
Used to build self - sufficient systems in off - grid locations, connecting panels to batteries and loads.
5.5 Solar - Powered Devices
Flexible and with various specifications, they power solar streetlights, water pumps, and other devices.