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Single Core Solar Cable

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single core double insulated photovoltaic solar cable

update time:2025-02-12 13:18:38

brief description:

I. Product IntroductionThe single core double insulated photovoltaic solar cable is a specialized electrical cable engineered for optimal performance in solar power systems. Featuring a single high-purity copper conductor encased within two distinct insulation layers, this cable offers enhanced prot...

introduction

I. Product Introduction

The single core double insulated photovoltaic solar cable is a specialized electrical cable engineered for optimal performance in solar power systems. Featuring a single high-purity copper conductor encased within two distinct insulation layers, this cable offers enhanced protection against electrical failures, environmental elements, and mechanical stresses. Its unique design makes it a preferred choice for a wide range of photovoltaic applications, from residential rooftops to large-scale commercial solar farms.

II. Structural Design and Materials

2.1 Conductor

  • Material: Crafted from oxygen-free copper with a purity of 99.97% or higher, ensuring excellent electrical conductivity and minimal power loss during transmission.

  • Structure: Available in both solid and stranded forms. Solid core conductors provide better mechanical stability for fixed installations, while stranded conductors offer enhanced flexibility for applications requiring frequent movement or bending.

2.2 Double Insulation Layers

  • Inner Insulation: Typically made of cross-linked polyethylene (XLPE), which offers superior electrical insulation properties, high thermal resistance, and chemical stability. The XLPE layer provides a reliable barrier against electrical leakage and can withstand high operating temperatures ranging from -40°C to +90°C.

  • Outer Insulation: Composed of UV-stabilized, halogen-free thermoplastic elastomer (TPE). This outer layer serves as an additional protective shield, offering excellent resistance to ultraviolet radiation, moisture, abrasion, and chemical corrosion. It safeguards the inner insulation and conductor, ensuring the cable’s integrity even in harsh outdoor environments.

III. Technical Specifications

Parameter
Typical Values
Rated Voltage
1000V DC or 1500V DC
Current Rating
Varies by cross-sectional area (e.g., 41A for 6 sq mm at 90°C)
DC Resistance
Low resistance values depending on size (e.g., ≤4.61Ω/km for 6 sq mm at 20°C)
Insulation Resistance
≥100MΩ at 500V DC
Flame Retardancy
Complies with international standards such as IEC 60332-1-2
Minimum Bend Radius
Usually 4 to 6 times the cable diameter
Operating Temperature
-40°C to +90°C, with short-term tolerance up to +120°C
Certifications
TÜV EN 50618, IEC 62930, UL 4703, RoHS

IV. Key Advantages

4.1 Enhanced Safety

  • Electrical Protection: The dual insulation layers significantly reduce the risk of electrical short circuits and leakage. Even if the outer insulation is damaged, the inner XLPE layer continues to provide reliable electrical insulation, minimizing the chances of electric shock hazards.

  • Fire Safety: With flame retardant properties meeting stringent international standards, the cable self-extinguishes quickly in case of a fire, preventing the spread of flames and reducing potential fire risks in solar installations.

4.2 Superior Durability

  • Weather Resistance: The UV-stabilized outer TPE insulation protects the cable from degradation caused by prolonged sunlight exposure, making it suitable for long-term outdoor use. It can withstand extreme weather conditions, including heavy rain, strong winds, and temperature fluctuations.

  • Mechanical Strength: The double insulation construction offers enhanced resistance to abrasion, cuts, and mechanical damage. This ensures the cable’s integrity during installation, operation, and maintenance, even in challenging environments with rough handling or movement.

4.3 High Efficiency

  • Low Resistance: The high-purity copper conductor combined with the optimized insulation design results in low electrical resistance, minimizing power losses during transmission. This allows for efficient power transfer from solar panels to inverters or other electrical components, maximizing the overall efficiency of the solar power system.

V. Applications

5.1 Residential Solar Systems

  • Ideal for connecting rooftop solar panels to inverters in homes. The cable’s safety features and durability make it a reliable choice for ensuring a stable power supply for household use, while its flexibility enables easy installation on rooftops with various layouts.

5.2 Commercial and Industrial Solar Farms

  • Well-suited for large-scale commercial and industrial solar installations. It can handle high currents and long-distance power transmission, meeting the demanding requirements of these projects. The cable’s double insulation provides an extra layer of protection, ensuring the safety and reliability of the entire solar power system.

5.3 Off-Grid and Remote Solar Installations

  • In remote locations such as rural areas, off-shore platforms, or remote research stations, where access to maintenance is limited, the durability and reliability of the single core double insulated solar cable are crucial. It can withstand harsh environmental conditions and provide a stable power connection for off-grid solar systems.

5.4 Solar-Powered Devices and Systems

  • Applicable for powering various solar-powered devices, including solar streetlights, water pumps, and monitoring systems. Its versatility and safety features make it suitable for a wide range of small to medium-sized solar applications.

VI. Installation and Maintenance

6.1 Installation Guidelines

  • Routing and Bending: When installing, ensure that the minimum bend radius requirements are met to avoid damaging the insulation layers. Use appropriate conduits or protective tubing for outdoor installations to further protect the cable from physical damage and environmental factors.

  • Termination: Connect the cable to compatible connectors rated for the cable’s voltage and current capacity. Properly crimp or solder the connections and use suitable sealing materials to prevent moisture and contaminants from entering the connection points.

6.2 Maintenance Tips

  • Regular Inspection: Periodically inspect the cable for any signs of damage, such as cuts, cracks, or discoloration. Pay close attention to the insulation layers, especially at bends, joints, and areas exposed to sunlight or mechanical stress.

  • Cleaning: In case of dirt or debris accumulation, clean the cable gently with a soft, dry cloth. Avoid using abrasive materials or harsh chemicals that could damage the insulation.

VII. Packaging and Warranty

  • Standard Packaging: Typically supplied in rolls of 100 meters, 200 meters, or custom lengths, wrapped in UV-protective film and placed on sturdy cardboard reels for easy handling, storage, and transportation.

  • Warranty: Backed by a comprehensive warranty, usually ranging from 10 to 25 years, depending on the manufacturer. The warranty covers defects in materials and workmanship, providing customers with peace of mind and confidence in the product’s quality and performance.

In conclusion, the single core double insulated photovoltaic solar cable is a high-performance, reliable, and safe solution for power transmission in solar power systems. Its advanced design, superior materials, and compliance with international standards make it an essential component for ensuring the efficient and long-lasting operation of photovoltaic installations.


 


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