300/500V H05V-K/H07V-K 6mm² /10mm² /16mm² Soft Copper PV Solar Battery Cable for Solar Panel

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2025-08-11 09:34:29

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Detailed Description of 300/500V H05V-K/H07V-K Flexible Copper PV Solar Battery Cables

I. Core Information about the Product Itself

(1) Specification Parameters

Conductor Parameters

6mm² Cable: The conductor is composed of 7 strands of flexible Copper Wires, each with a diameter of 1.04mm. The total cross-sectional area is precisely 6mm². At 20℃, the DC resistance of the conductor is ≤3.08Ω/km, ensuring efficient current transmission. The current-carrying capacity when laid in air is 42A, which can meet the power transmission needs of small to medium-sized photovoltaic modules.

10mm² Cable: It consists of 7 strands of 1.35mm Flexible Copper Wires. The DC resistance at 20℃ is ≤1.83Ω/km, and the current-carrying capacity in air is 57A. This specification is suitable for scenarios with higher power requirements in photovoltaic systems.

16mm² Cable: Made up of 7 strands of 1.70mm Flexible Copper Wires. The DC resistance at 20℃ is ≤1.15Ω/km, and the current-carrying capacity in air reaches 74A, making it ideal for large-scale photovoltaic power transmission.

All conductors are made of flexible copper with a purity of ≥99.95%. After annealing treatment, their Flexibility is significantly improved, with a bending radius of ≤4 times the outer diameter. This allows the cables to be easily routed at various angles during solar panel installation, adapting to complex installation environments.

Insulation Parameters

H05V-K Type: The insulation layer is made of weather-resistant PVC. For the 6mm² cable, the insulation thickness is 1.0mm; for 10mm² and 16mm² cables, it is 1.2mm. The insulation layer has a temperature resistance range of -25℃ to 70℃, which can withstand the temperature fluctuations in most outdoor environments. The insulation resistance is ≥100MΩ (at 25℃), providing excellent electrical insulation performance.

H07V-K Type: The insulation layer is upgraded to temperature-resistant PVC. The thickness ranges from 1.0mm to 1.4mm depending on the cable specification. It can resist temperatures from -25℃ to 90℃, making it suitable for high-temperature environments such as areas with strong sunlight exposure. The insulation resistance is also ≥100MΩ (at 90℃), ensuring stable insulation performance even at high temperatures.

Sheath Parameters

H05V-K Type: The sheath is made of UV-resistant PVC. The thickness is 1.2mm for 6mm² cable and 1.5mm for 10mm² and 16mm² cables. The overall outer diameter of the cables ranges from 10.5mm to 15mm. The sheath has excellent ozone aging resistance, passing a 1000-hour ozone aging test without cracks, which can effectively resist the erosion of ozone in the atmosphere.

H07V-K Type: The sheath is added with carbon black additives to enhance its UV resistance, reaching a UV resistance grade of UVW 10. This enables the cable to be used in outdoor exposed environments for more than 15 years. The sheath also has a waterproof grade of IP67, preventing water intrusion and ensuring the safe operation of the cable in humid environments.

Electrical Safety Parameters

The rated voltage of all cables is 300/500V, suitable for the voltage level of photovoltaic systems. They can withstand a power frequency withstand voltage of 1.5kV for 5 minutes without breakdown, ensuring safe operation under normal and transient voltage conditions.

The short-circuit withstand temperature is 160℃ for 5 seconds, which can resist the high temperature generated during short-circuit faults, reducing the risk of cable damage. The cables comply with IEC 60228 and DIN VDE 0281 standards, meeting international safety requirements.

(2) Characteristic Applications

Household Distributed Photovoltaic Systems

6mm² Cable: It is suitable for 5-8kW household photovoltaic systems. It is used to connect solar panels and micro-inverters. Due to its small diameter and high flexibility, it can be piped and buried in roof interlayers or walls without affecting the appearance of the building. It can adapt to the relatively small installation space of household roofs and ensure stable power transmission between components.

10mm² Cable: Adapted to 8-15kW household systems, it is used as the main line from the combiner box to the inverter. It can withstand the high temperature of the roof in summer (≤70℃) and has good resistance to wind and rain erosion, meeting the long-term outdoor use needs of villas, self-built houses, and other residential buildings.

Large-Scale Photovoltaic Power Plants

16mm² Cable: As the input line of centralized inverters above 15kW, it is widely used in large ground-mounted photovoltaic power plants. It can be directly buried (burial depth ≥50cm) in the ground, and the sheath has excellent soil corrosion resistance, which can last for 50 years in various geological conditions such as sandy soil, clay, and loam, ensuring long-term stable operation of the power plant.

H07V-K Type Cable: It performs well in power plants in high-altitude areas (≥3000m) or high-temperature regions (summer temperature ≥40℃). Its excellent high-temperature resistance can reduce power loss caused by cable overheating, improving the overall efficiency of the power plant.

Special Environmental Applications

Coastal Areas: The sheath of the cable contains an anti-salt spray formula, which has passed a 96-hour salt spray test without rusting. It is suitable for photovoltaic projects on islands, beaches, and other coastal areas, resisting the corrosion of salt mist in the marine atmosphere.

Cold Regions: The cable remains flexible at -25℃, which can meet the construction needs in winter in cold regions such as Northeast China and Inner Mongolia. It avoids embrittlement and fracture caused by low temperatures, ensuring the smooth progress of installation and maintenance work.

(3) Material Styles

Conductor Material

The conductor is made of oxygen-free flexible copper with a purity of ≥99.95%. Oxygen-free copper has extremely low oxygen content, which reduces the occurrence of oxide inclusions, ensuring excellent electrical conductivity. The flexible copper after annealing treatment has good ductility and toughness, making it easy to strand and bend, adapting to the requirements of various installation scenarios.

Insulation Material

H05V-K Type: The insulation layer uses weather-resistant PVC. This material has good electrical insulation properties, Chemical Resistance, and weather resistance. It can resist the erosion of ultraviolet rays, ozone, and other environmental factors, ensuring stable insulation performance in outdoor environments.

H07V-K Type: The insulation layer is made of temperature-resistant PVC, which has higher heat resistance than ordinary PVC. It can maintain stable performance at high temperatures, reducing the risk of insulation aging and breakdown caused by high temperatures.

Sheath Material

H05V-K Type: The sheath is UV-resistant PVC, which can effectively resist the damage of ultraviolet rays to the cable, slowing down the aging rate of the sheath. It also has certain wear resistance and impact resistance, protecting the internal structure of the cable from external mechanical damage.

H07V-K Type: The sheath is made of PVC with carbon black additives. Carbon black can absorb ultraviolet rays, further enhancing the UV resistance of the sheath. At the same time, the material has good waterproof performance, preventing water from entering the cable and affecting its electrical performance.

Style Design

The cables have a circular cross-section, which is convenient for installation and laying. The outer surface of the sheath is smooth, reducing friction during laying and facilitating threading. The color of the cables is specially designed as photovoltaic black, which can reduce the absorption of sunlight, thereby reducing the temperature rise of the cable and slowing down the thermal aging of the material. Each meter of the cable is printed with specifications, certification marks, and meterage identifiers, which is convenient for construction personnel to cut and check.

(4) Production Process

Conductor Stranding

First, high-purity oxygen-free copper is drawn into copper wires of the required diameter through a wire drawing machine. During the wire drawing process, strict control of drawing speed and lubrication conditions ensures the surface of the copper wire is smooth and free of defects. Then, the copper wires are stranded into conductors according to the specified number of strands and stranding pitch. The stranding pitch is precisely controlled between 12-18 times the conductor diameter, which can reduce the high-frequency skin effect loss and improve the power transmission efficiency of the photovoltaic system by 3%-5%. The stranding process uses advanced stranding equipment to ensure that the strands are evenly stressed and tightly combined, enhancing the mechanical strength and flexibility of the conductor.

Insulation Extrusion

The insulation material (weather-resistant PVC for H05V-K type and temperature-resistant PVC for H07V-K type) is added to the extruder. The material is heated and melted in the extruder, and then evenly extruded and coated on the surface of the conductor through a mold. During the extrusion process, parameters such as temperature, pressure, and extrusion speed are strictly controlled to ensure that the insulation layer has uniform thickness, smooth surface, and no bubbles, pinholes, or other defects. After extrusion, the cable is cooled by water to shape the insulation layer, ensuring its dimensional stability.

Sheath Extrusion

After the insulation layer is formed, the cable enters the sheath extrusion process. The sheath material (UV-resistant PVC for H05V-K type and PVC with carbon black additives for H07V-K type) is melted in the extruder and extruded onto the surface of the insulation layer. The extrusion parameters are adjusted according to the type and specification of the cable to ensure that the sheath layer is tightly combined with the insulation layer, with uniform thickness and no delamination. The sheath layer after extrusion is also cooled by water to fix its shape.

Irradiation Cross-Linking

For some high-Performance Cables, especially H07V-K type, an irradiation cross-linking process is adopted. The cable is irradiated with electron beams or gamma rays, which makes the molecular chains of the insulation and sheath materials form a three-dimensional network structure, improving the thermal stability, mechanical strength, and aging resistance of the materials. The cross-linking degree is strictly controlled to ensure that the cable has excellent performance while maintaining good flexibility.

Testing and Inspection

During the production process, various tests and inspections are carried out on the cable. This includes testing the conductor's DC resistance, insulation resistance, withstand voltage performance, and the sheath's thickness, tensile strength, elongation at break, and aging resistance. After production, the finished cable undergoes a comprehensive performance test to ensure that all indicators meet the relevant standards and design requirements. Only qualified products are allowed to leave the factory.

II. General Product Information

(1) Packaging

Cable Coiling

The cables are coiled on wooden or plastic reels according to their length. For 6mm² and 10mm² cables with a length of 100m or 200m, plastic reels are usually used, which are lightweight and convenient for manual handling. For 16mm² cables and longer lengths (such as 500m), wooden reels are used, which have higher strength and can withstand the weight of the cable. The reels are designed with flanges on both sides to prevent the cable from falling off during storage and transportation.

Protection Measures

The surface of the coiled cable is wrapped with a layer of plastic film to prevent dust, moisture, and dirt from adhering to the cable surface. For H07V-K type cables and those used in special environments, an additional layer of waterproof cloth is wrapped to enhance the waterproof and moisture-proof effect. The reel is also equipped with a metal bracket to facilitate lifting and handling by mechanical equipment.

Labeling

Each reel is affixed with a label containing detailed information, including product name, model, specification (cross-sectional area), length, rated voltage, production date, batch number, certification marks (such as TÜV, UL), and manufacturer information. This allows users to quickly understand the basic parameters and quality of the cable.

(2) Transportation

Transportation Methods

Land Transportation: For short-distance transportation (within 500km), trucks are used. The reels are placed horizontally in the truck compartment, and wooden blocks or brackets are used to fix them to prevent rolling and collision during transportation.

Railway Transportation: For long-distance transportation, railway freight is chosen, which has the advantages of large capacity and stable transportation. The reels are loaded into railway containers, and appropriate fixing measures are taken to ensure safety.

Sea Transportation: For export products, sea transportation is used. The reels are placed in containers, and moisture-proof and rust-proof treatments are carried out on the reels and cables to prevent damage caused by seawater and humid environments during transportation.

Transportation Precautions

During loading and unloading, mechanical equipment such as cranes or forklifts should be used, and violent lifting and dropping are prohibited to avoid damaging the reels and cables.

The cables should be protected from direct sunlight, rain, and snow during transportation. If transported in open vehicles, they should be covered with waterproof cloth.

During transportation, avoid contact with sharp objects and chemicals to prevent the sheath from being scratched or corroded.

(3) Delivery

Order Processing

After receiving the customer's order, the sales staff will confirm the product specifications, quantity, delivery date, and delivery address with the customer. The production department will arrange production according to the order requirements, and the warehouse will prepare the goods in advance for products in stock.

Delivery Time

For in-stock products, delivery can be arranged within 1-3 working days after the order is confirmed.

For customized products or large quantities of orders, the delivery time is determined according to the production cycle, usually 7-15 working days. The sales staff will keep in touch with the customer in a timely manner to inform them of the production progress and estimated delivery time.

Delivery Notification

After the goods are shipped, the customer service staff will send a delivery notice to the customer via email, SMS, or phone call, including the waybill number, transportation method, estimated arrival time, and contact information of the transporter. This allows the customer to track the logistics information in a timely manner.

(4) Samples

Sample Provision

Customers can apply for samples through the company's official website, email, or phone. The company provides free samples of various specifications (usually 1-5 meters in length) for customers to test and verify the performance and quality of the cable. The customer only needs to bear the express delivery fee.

Sample Delivery

After receiving the sample application, the company will arrange to send the samples within 1-3 working days. The samples are packaged in small cartons or plastic bags, with a sample label attached, indicating the product information. The samples are delivered by express companies such as DHL, FedEx, or local express, ensuring that customers receive them in a timely manner.

Sample Follow-Up

After the customer receives the sample, the sales staff will follow up in a timely manner to understand the customer's feedback on the sample, answer technical questions, and provide relevant technical data and solutions according to the customer's needs, laying the foundation for further cooperation.

(5) After-Sales Service

Quality Guarantee

The company provides a quality guarantee period of 10 years for the cables. During the guarantee period, if the cable has quality problems due to manufacturing defects (such as insulation breakdown, conductor oxidation), the company will provide free replacement or repair services.

Technical Support

The company has a professional technical team to provide customers with technical support, including cable selection, installation guidance, and troubleshooting. Customers can consult through the technical hotline, email, or online customer service, and the technical staff will respond within 24 hours and provide solutions.

Complaint Handling

If the customer has any complaints about the product quality or service, they can feedback through the company's complaint channel. The after-sales department will record the complaint content and investigate and deal with it in a timely manner. A reply will be given to the customer within 3 working days, and the processing result will be tracked until the customer is satisfied.

Maintenance and Replacement

If the cable is damaged during use and needs maintenance or replacement, the company can send professional technicians to the site for handling according to the customer's request. For non-quality problems, the company will charge a certain service fee, and the specific cost will be negotiated with the customer in advance.