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I. Product Introduction
The 6mm single core solar DC cable is a fundamental component in photovoltaic (PV) systems, designed to efficiently transmit direct current power generated by solar panels. With a cross-sectional area of 6 square millimeters, this cable strikes an optimal balance between electrical conductivity, flexibility, and current-carrying capacity. Whether for residential rooftops, commercial solar installations, or off-grid setups, it ensures reliable power transfer while withstanding the rigors of outdoor environments.
II. Technical Specifications
Parameter | Details |
Conductor Material | Oxygen-free copper (≥99.97%), tinned for enhanced corrosion resistance |
Cross-Sectional Area | 6 square millimeters |
Rated Voltage | 1000V DC / 1500V DC |
Current Rating (90°C) | 41A |
DC Resistance (20°C) | ≤3.08Ω/km |
Inner Insulation | Cross-linked polyethylene (XLPE) |
Outer Sheath | UV-stabilized, halogen-free thermoplastic elastomer (TPE) |
Overall Diameter | Approximately 6.2mm |
Minimum Bend Radius | 4 - 6 times cable diameter (24.8 - 37.2mm) |
Operating Temperature | -40°C to +90°C |
Flame Retardancy | Complies with IEC 60332-1-2 |
Certifications | TÜV EN 50618, IEC 62930, UL 4703, RoHS |
III. Key Features
3.1 Efficient Power Transmission
With a current rating of 41A at 90°C, the 6mm single core cable can handle the power output of medium-sized PV systems. Its low electrical resistance, thanks to the high-purity copper conductor, minimizes power losses during transmission. For instance, in a 10kW solar installation, this cable ensures that the majority of the generated power reaches the inverter and subsequent electrical components with minimal energy dissipation.
3.2 Durable Insulation System
XLPE Inner Insulation: The cross-linked polyethylene inner layer provides excellent electrical insulation, protecting against electrical leakage and short circuits. It also offers high thermal stability, maintaining its integrity within the wide operating temperature range from -40°C to +90°C.
TPE Outer Sheath: The UV-stabilized TPE outer sheath safeguards the cable from external factors. It resists ultraviolet radiation, preventing degradation under prolonged sunlight exposure. Additionally, it offers protection against moisture, abrasion, and mild chemical substances, ensuring the cable's longevity in outdoor installations.
3.3 Flexibility and Ease of Installation
The cable's design allows for a reasonable minimum bend radius, enabling it to be easily routed through tight spaces, conduits, or around corners during installation. This flexibility simplifies the installation process, whether on complex rooftop structures or in confined electrical enclosures, reducing labor time and costs.
IV. Applications
4.1 Residential Solar Systems
Ideal for connecting rooftop solar panels in homes. In a typical suburban residential PV setup, the 6mm single core cable can efficiently link multiple solar panels in series or parallel to the inverter, providing a stable power supply for household appliances, lighting, and other electrical needs.
4.2 Commercial Solar Installations
Well-suited for commercial buildings such as offices, warehouses, and shopping centers. These installations often have larger power requirements, and the 6mm cable can handle the increased current flow from a larger number of solar panels, ensuring reliable power generation and integration with the building's electrical system.
4.3 Off-Grid and Remote Area Installations
In remote locations where access to the main electrical grid is limited, such as rural areas, islands, or remote research stations, the 6mm single core solar DC cable is a reliable choice. It can transmit power from solar panels to batteries or other electrical loads, enabling the establishment of self-sufficient power systems.
4.4 Solar-Powered Devices and Small-Scale Projects
Applicable for powering various solar-powered devices, including solar streetlights, water pumps, and small-scale monitoring systems. Its compact size and manageable current-carrying capacity make it suitable for these smaller applications, providing a cost-effective and efficient power connection solution.
V. Installation and Maintenance
5.1 Installation Guidelines
Termination: Use compatible connectors rated for 6mm cables and the cable's voltage and current capacity. Crimp connectors securely to ensure a stable electrical connection. For example, MC4 connectors are commonly used in PV systems and are designed to provide a reliable and weatherproof connection for this cable size.
Routing: When routing the cable, maintain the minimum bend radius to avoid damaging the insulation and conductor. Use appropriate cable clips, conduits, or trays to support and protect the cable, especially in areas where it may be exposed to mechanical stress or physical damage.
Polarity Connection: In DC systems, ensure correct polarity connection. Typically, the positive and negative terminals of the cable are color-coded or marked to prevent incorrect connections, which could lead to system malfunctions or damage to electrical components.
5.2 Maintenance Tips
Regular Inspection: Periodically check the cable for any signs of damage, such as cuts, cracks, or discoloration of the insulation. Pay close attention to the connection points for any signs of overheating, corrosion, or loose connections.
Cleaning: If dirt or debris accumulates on the cable, clean it gently with a soft, dry cloth. Avoid using abrasive materials or harsh chemicals that could damage the outer sheath.
Lifespan Monitoring: Although the 6mm single core solar DC cable has a long service life under normal conditions, monitor its performance over time. If significant degradation or performance issues are detected, such as a decrease in insulation resistance or an increase in electrical resistance, consider replacing the cable to ensure the continued safe and efficient operation of the PV system.
In conclusion, the 6mm single core solar DC cable is a versatile and reliable product that plays a crucial role in PV systems. Its technical features, wide range of applications, and ease of installation and maintenance make it an essential choice for both small-scale and large-scale solar power projects.