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I. Product Overview
The 6mm single core photovoltaic solar cable is a specialized wiring solution meticulously engineered for direct current (DC) power transmission within photovoltaic systems. Tailored to the unique requirements of solar energy generation, this cable combines high conductivity, exceptional durability, and reliable performance, ensuring seamless integration from solar panels to inverters and beyond. Its 6-square-millimeter cross-sectional area optimally balances electrical efficiency, mechanical flexibility, and current-carrying capacity, making it a preferred choice across diverse PV applications.
II. Technical Specifications
Parameter | Details |
Conductor Material | Oxygen-free copper with a purity of ≥99.97%, tinned to enhance anti-corrosion performance |
Cross-Sectional Area | 6 square millimeters |
Rated Voltage | 1000V DC or 1500V DC, compliant with high-voltage PV system standards |
Current Rating (90°C) | 41A, capable of handling substantial power outputs in medium-sized PV arrays |
DC Resistance (20°C) | ≤3.08Ω/km, minimizing power losses during long-distance transmission |
Inner Insulation | Cross-linked polyethylene (XLPE), offering excellent electrical insulation and thermal stability |
Outer Sheath | UV-stabilized, halogen-free thermoplastic elastomer (TPE), providing robust protection against environmental factors |
Overall Diameter | Approximately 6.2mm |
Minimum Bend Radius | 4 - 6 times the cable diameter (ranging from 24.8 - 37.2mm), facilitating installation in tight spaces |
Operating Temperature | -40°C to +90°C, with short-term tolerance up to +120°C |
Flame Retardancy | Meets the stringent requirements of IEC 60332-1-2, ensuring fire safety |
Certifications | TÜV EN 50618, IEC 62930, UL 4703, RoHS, guaranteeing compliance with international quality and safety standards |
III. Distinctive Features
3.1 Superior Power Transmission Efficiency
The high-purity tinned copper conductor of the 6mm single core photovoltaic solar cable significantly reduces electrical resistance. In a typical 10kW PV system, this cable ensures that over 98% of the generated power reaches the inverter, minimizing energy dissipation as heat. This efficiency is crucial for maximizing the return on investment in solar projects by reducing power losses during the critical DC power transfer stage from panels to inverters.
3.2 Robust Dual-Layer Protection
XLPE Inner Insulation: The cross-linked polyethylene inner layer provides a reliable electrical insulation barrier, preventing leakage and short circuits. It maintains its integrity across a wide temperature range, from extreme cold to high heat, ensuring consistent performance in various climates.
TPE Outer Sheath: The UV-stabilized TPE outer sheath acts as a shield against harsh outdoor elements. It resists long-term UV radiation exposure, which can degrade conventional materials, and offers excellent protection against moisture, abrasion, and chemical substances commonly found in outdoor environments. This dual-layer design extends the cable's lifespan, reducing maintenance costs and enhancing the overall reliability of the PV system.
3.3 Installation-Friendly Design
With a flexible structure and a manageable minimum bend radius, the 6mm cable simplifies installation processes. Whether navigating complex rooftop layouts, threading through conduits in commercial buildings, or setting up off-grid systems in remote locations, installers can easily route the cable without compromising its structural integrity. This flexibility not only saves installation time but also reduces the risk of damage during handling and deployment.
IV. Diverse Application Scenarios
4.1 Residential Rooftop Solar Systems
In residential settings, the 6mm single core photovoltaic solar cable is the ideal choice for connecting rooftop solar panels. It can efficiently handle the power output of small to medium-sized home PV arrays, typically ranging from 3kW to 10kW. The cable's compact size and ease of installation make it suitable for DIY projects or professional installations, ensuring a safe and stable power supply for household electrical needs, such as lighting, appliances, and heating systems.
4.2 Commercial and Industrial Solar Installations
For commercial buildings like offices, factories, and shopping malls, as well as industrial facilities, the 6mm cable can meet the higher power demands of large-scale PV installations. These systems often involve multiple solar panel strings connected in parallel or series, and the cable's 41A current-carrying capacity allows for seamless power collection and transmission to the building's electrical infrastructure or the grid. Its durability and reliability also ensure continuous operation, even in high-traffic and high-stress environments.
4.3 Off-Grid and Remote Solar Power Systems
In remote locations where grid connectivity is limited or non-existent, such as rural villages, islands, and remote research stations, the 6mm photovoltaic solar cable is essential for establishing self-sufficient solar power systems. It enables the transfer of power from solar panels to batteries for energy storage and subsequent distribution to electrical loads. The cable's ability to withstand harsh environmental conditions, including extreme temperatures, strong winds, and heavy rain, makes it a reliable option for off-grid applications where maintenance access may be difficult.
4.4 Solar-Powered Monitoring and Control Systems
In addition to power transmission for energy generation, the 6mm single core cable is also suitable for powering solar-powered monitoring and control systems. These systems, which are used to monitor the performance of PV arrays, adjust panel angles, and manage energy storage, often require a stable and reliable power source. The cable's compact size and flexibility make it easy to integrate into these smaller-scale, yet critical, components of a PV system.
V. Installation and Maintenance Best Practices
5.1 Installation Guidelines
Termination: Utilize high-quality connectors specifically rated for 6mm cables and the cable's voltage and current specifications. MC4 connectors are widely used in PV systems due to their reliable and weatherproof design. Ensure proper crimping techniques are employed to create a secure and low-resistance connection, which is vital for maintaining optimal power transfer.
Routing: When routing the cable, strictly adhere to the minimum bend radius requirements to avoid damaging the insulation and conductor. Use appropriate cable management solutions, such as clips, conduits, or trays, to support and protect the cable, especially in areas prone to mechanical stress, such as around sharp corners or in high-traffic zones. Additionally, separate positive and negative cables to prevent potential short circuits and ensure proper system operation.
Polarity Identification: Clearly identify and mark the positive and negative terminals of the cable during installation. Color-coding is a common method, with red typically indicating the positive terminal and black the negative. Proper polarity connection is crucial for the correct functioning of PV components, including inverters and batteries, and to prevent damage to the system.
5.2 Maintenance Tips
Regular Inspections: Conduct routine visual inspections of the cable to check for signs of damage, such as cuts, cracks, or discoloration of the insulation. Pay close attention to connection points for any indications of overheating, corrosion, or loose connections, as these can lead to performance degradation and potential safety hazards.
Cleaning: In case of dirt, dust, or debris accumulation on the cable, clean it gently using a soft, dry cloth. Avoid using abrasive materials or harsh chemicals, as they can damage the outer sheath and compromise the cable's protective properties.
Performance Monitoring: Periodically monitor the cable's electrical performance, including insulation resistance and DC resistance. A significant decrease in insulation resistance or an increase in DC resistance may indicate internal damage or degradation, and prompt replacement of the cable may be necessary to ensure the continued safe and efficient operation of the PV system.
In summary, the 6mm single core photovoltaic solar cable is a versatile, reliable, and high-performance product that plays a vital role in modern photovoltaic systems. Its advanced technical features, wide range of applications, and user-friendly installation and maintenance characteristics make it an indispensable component for anyone involved in solar energy generation, whether for residential, commercial, or off-grid projects.