Zr-BV-1× 25mm² 450/750V Copper Core PVC Insulated Wire Zc Yjv

Conductor: The conductor is made of high-purity electrolytic copper with a purity of ≥99.95%. It has a single-core solid structure, and the cross-sectional area is precisely 25mm². The diameter of the conductor is approximately 5.64mm, with an allowable error of ±0.02mm. At 20℃, the DC resistance of the conductor is strictly controlled to be ≤0.727Ω/km, ensuring efficient and low-loss power transmission. The tensile strength of the conductor is ≥200MPa, and the elongation at break is ≥30%, which can withstand certain pulling forces during installation without breaking.

Insulation Layer: The insulation layer is made of high-quality polyvinyl chloride (PVC) material, with a thickness of ≥1.2mm and a tolerance of ±0.05mm. It has excellent insulation performance, with an insulation resistance of ≥100MΩ at 20℃. The temperature resistance range is -15℃ to 70℃, which can maintain stable insulation performance in both low and high-temperature environments. The insulation layer has good mechanical properties, with a tensile strength of ≥12MPa and an elongation at break of ≥150%, which can resist external mechanical damage.

Flame Retardancy: The wire has ZR (flame-retardant) characteristics and passes the GB/T 18380 flame-retardant test. In the test, the wire can self-extinguish within 30 seconds after the flame is removed, and the burning length does not exceed 50mm, effectively inhibiting the spread of fire.

Overall Dimensions: The overall outer diameter of the wire is about 8.5mm, and the bending radius is ≥4 times the outer diameter (i.e., ≥34mm), which is convenient for laying and installation in narrow spaces such as walls and pipes.

Electrical Safety: The rated voltage is 450/750V, and it can withstand a power frequency withstand voltage of 3kV for 5 minutes without breakdown. It meets the relevant national electrical safety standards and can ensure safe use in various electrical systems.

Conductor: The conductor is composed of multiple strands of high-purity Copper Wires stranded together. Common cross-sectional areas include 4mm², 6mm², 10mm², 16mm², 25mm², 35mm², 50mm², 70mm², 95mm², 120mm², 150mm², 185mm², 240mm², etc. For example, the 25mm² conductor is usually stranded by 7 strands of 2.12mm copper wires. The DC resistance of the conductor at 20℃ complies with GB/T 3956 standards, ensuring low-loss power transmission. The stranding pitch is scientifically designed to ensure the Flexibility and stability of the conductor, with a tensile strength of ≥200MPa and an elongation at break of ≥25%.

Insulation Layer: The insulation layer is made of cross-linked polyethylene (XLPE), which has excellent insulation performance. The thickness of the insulation layer varies according to the cross-sectional area, for example, the 25mm² cable has an insulation thickness of ≥1.2mm. It has a wide temperature resistance range of -40℃ to 90℃, and can maintain stable insulation performance in extreme temperature environments. The insulation resistance is ≥1000MΩ·km at 20℃, and the dielectric loss tangent is ≤0.005 at 50Hz, which is suitable for high-voltage and high-frequency scenarios.

Sheath Layer: The sheath is made of polyvinyl chloride (PVC) material, with a thickness varying with the cable specification, generally ≥1.8mm for 25mm² cable. It has good weather resistance, corrosion resistance, and wear resistance, and can resist the erosion of sunlight, rain, humidity, and common chemicals. The sheath is added with flame retardants to meet the ZC (Class C flame retardant) requirement. During combustion, it releases less smoke and low toxicity, and the oxygen index is ≥30.

Electrical Performance: The rated voltage is 0.6/1kV, and it can withstand a power frequency withstand voltage of 10kV for 5 minutes without breakdown. The short-circuit withstand temperature is 250℃ (5 seconds), which can withstand the high temperature generated during short-circuit faults. The impulse withstand voltage (1.2/50μs) is 8kV, ensuring the cable's safety under transient overvoltage.

Mechanical Properties: The cable has high mechanical strength, with a tensile strength of the sheath ≥12MPa and an elongation at break ≥125%. The bending radius is ≥12 times the outer diameter for Unarmored Cables and ≥20 times the outer diameter for Armored Cables, which is convenient for laying in various environments.

Building Electrical Field: It is widely used in lighting and power distribution trunk lines of high-rise buildings and commercial complexes. In high-rise residential buildings, it can be used as the main Power Line for each floor, connecting the distribution box on the floor to the household distribution boxes, ensuring stable power supply for household appliances, lighting, etc. In commercial complexes, it is suitable for power supply of large shopping malls, supermarkets, and office areas, and can be laid openly along the ceiling or wall, or concealed in the wall, floor, or ceiling, adapting to different architectural styles and decoration requirements.

Industrial Auxiliary Lines: As a power connection line for small and medium-sized motors, machine tools, and other equipment in factory workshops, it can withstand certain mechanical vibrations and shocks generated during the operation of the equipment. For example, in the assembly workshop of mechanical processing plants, it can connect the power supply of drilling machines, milling machines, and other equipment, ensuring the normal operation of the equipment. It is also suitable for power supply of auxiliary equipment such as fans, pumps, and conveyors in industrial production lines.

Public Facilities: It is used in emergency lighting lines and ordinary socket circuits in hospitals, schools, and other places. In hospitals, the emergency lighting line connected by this wire can ensure that the emergency lights are normally lit in case of power failure, providing lighting for medical staff and patients. In schools, it can be used for power supply of classroom sockets, library equipment, etc., and its flame-retardant feature adds a layer of safety guarantee for these densely populated places.

Building Trunk Lines: In large shopping malls, hotels, and other buildings, it serves as the trunk cable from the distribution room to the distribution boxes on each floor. It can be laid in various ways such as buried underground, 穿管 (threading through pipes), or along the bridge. For example, in large shopping malls, it is buried underground in the shopping mall's basement to connect the main distribution room to the distribution boxes on each floor, ensuring the power supply of lighting, air conditioning, elevators, and other equipment in the mall. In hotels, it can be laid along the 桥架 in the ceiling to supply power to guest rooms, restaurants, and conference rooms, adapting to the complex wiring environment of the building.

Industrial Power Distribution: It is used for the connection between factory transformer and distribution rooms and workshop main distribution boxes, capable of carrying large load currents. In heavy industry factories such as steel plants and chemical plants, it can withstand the influence of oil, dust, and high temperature in the industrial environment, ensuring the normal operation of production equipment. For example, in a chemical plant, it can connect the transformer room to the workshop's distribution box, providing power for reactors, mixers, and other large equipment.

Municipal Engineering: In municipal projects such as urban road lighting and underground pipe corridors, it serves as the main line for power transmission. In urban road lighting, it is laid underground along the road to connect the street lamp control box to each street lamp, ensuring the normal lighting of the road at night. In underground pipe corridors, it can be laid in the dedicated cable trench of the pipe corridor to supply power for various equipment in the pipe corridor, such as monitoring systems and ventilation systems. It has good corrosion resistance to buried ground, and its service life can reach more than 30 years.

Conductor Material: The conductor uses high-purity electrolytic copper, which is refined through electrolysis to remove impurities such as iron, lead, and zinc, ensuring high conductivity. The copper has a bright surface, no oxidation, and good ductility, which is convenient for processing into a solid single-core structure.

Insulation Material: The insulation layer is made of PVC material, which is a mixture of polyvinyl chloride resin, plasticizers, stabilizers, flame retardants, and other additives. The plasticizer makes the PVC material have good flexibility, the stabilizer prevents the PVC from decomposing at high temperatures, and the flame retardant gives the wire flame-retardant performance. The insulation layer is usually in black, which is not only resistant to dirt but also convenient for identification during construction.

Style Design: The wire has a simple and compact structure, with a single-core solid conductor wrapped by a layer of PVC Insulation. The surface of the insulation layer is smooth, with clear printing of product specifications, models, rated voltages, and manufacturer information, which is convenient for users to identify and use.

Conductor Material: The conductor is made of high-purity copper wires, and the purity of the copper is ≥99.95%. The copper wires have good conductivity and ductility, and are stranded into a conductor with a certain structure through a specific stranding process, which improves the flexibility of the conductor.

Insulation Material: The insulation layer uses XLPE material, which is formed by cross-linking polyethylene through chemical or physical methods. Cross-linking makes the molecular structure of polyethylene form a three-dimensional network, improving its heat resistance, insulation performance, and mechanical strength. The XLPE insulation layer is color-coded, with different colors representing different phases (such as yellow, green, red for three phases, blue for neutral, and yellow-green for ground), which is convenient for phase identification during installation.

Sheath Material: The sheath is made of PVC material, which is added with flame retardants, weather-resistant agents, and other additives to improve its flame retardancy, weather resistance, and corrosion resistance. The sheath is usually black, which can resist ultraviolet radiation and is suitable for outdoor use.

Style Design: The cable is composed of multiple Insulated Cores (depending on the number of cores) twisted together, and then wrapped with a sheath. For Multi-Core cables, fillers are usually added between the cores to make the cable structure round and stable. Some cables may also be armored (such as Steel Tape armor or steel wire armor) according to needs to improve their mechanical protection performance. The surface of the sheath is printed with product information such as specifications, models, and rated voltages.

Conductor Drawing: High-purity copper rods are drawn into copper wires of the required diameter through a wire drawing machine. During the drawing process, lubricants are used to reduce friction and heat, ensuring the surface of the copper wire is smooth and the size is accurate. The drawn copper wire is annealed to eliminate internal stress and improve its ductility.

Insulation Extrusion: The PVC Insulation Material is heated and melted in an extruder, and then evenly extruded and coated on the surface of the Copper Conductor through a mold. The extrusion process parameters such as temperature, pressure, and speed are strictly controlled to ensure that the insulation layer has uniform thickness, a smooth surface, and no defects such as bubbles and pinholes. After extrusion, the wire is cooled by water to shape the insulation layer.

Printing and Winding: The cooled wire is printed with product information using a printing machine. Then, the wire is wound into coils of a certain length through a winding machine, and the coils are packaged for storage or transportation.

Quality Inspection: During the production process, sampling inspections are carried out on the conductor's DC resistance, insulation thickness, insulation resistance, withstand voltage performance, and flame retardancy to ensure that the product meets the standards.

Conductor Stranding: Multiple copper wires are stranded into conductors according to a certain stranding method and pitch. The stranding process ensures that the copper wires are evenly stressed and tightly combined, improving the flexibility and conductivity of the conductor.

Insulation Extrusion and Cross-Linking: The XLPE Insulation Material is extruded and coated on the surface of the Stranded Conductor through an extruder. Then, the insulation layer is cross-linked through a cross-linking tube (using steam or nitrogen as a medium) to form a three-dimensional network structure. Cross-linking can improve the heat resistance and mechanical properties of the insulation layer.

Cabling: Multiple insulated cores are twisted together into a cable core according to the design requirements. Fillers are added between the cores to make the cable core round. A binding tape is wrapped around the cable core to fix the structure.

Sheath Extrusion: The PVC Sheath material is extruded and coated on the surface of the cable core through an extruder. The extrusion process is similar to the insulation extrusion, ensuring the sheath layer has uniform thickness and good bonding with the cable core. After extrusion, the cable is cooled and shaped.

Armoring (if needed): For armored cables, steel tape or steel wire is wrapped or woven around the sheath layer to form an armor layer, which is then coated with a protective layer.

Testing and Inspection: The finished cable undergoes various tests such as conductor resistance, insulation resistance, withstand voltage, and flame retardancy. Only products that pass the tests can leave the factory.

Coiling and Wrapping: The wire is wound into coils of 100 meters, 200 meters, or other specified lengths. Each coil is wrapped with a plastic film to prevent dust and moisture. For large coils, wooden or plastic reels are used, and the wire is neatly wound on the reels.

Labeling: Each coil or reel is affixed with a label containing product name, model, specification, length, rated voltage, production date, batch number, manufacturer information, and certification marks.

Packaging for Transportation: Coils or reels are packed into cartons or wooden cases for transportation. The packaging is sturdy to prevent damage during transportation.

Reel Packaging: The cable is wound on wooden or steel reels. The reels have flanges on both sides to prevent the cable from falling off. The size of the reel is determined according to the length and diameter of the cable.

Protection Measures: The surface of the cable on the reel is wrapped with a plastic film to prevent moisture and dust. The reel is fixed with steel strips to ensure that the cable does not loosen during transportation.

Labeling: The reel is affixed with a label with detailed product information, including name, model, specification, length, rated voltage, production date, batch number, and manufacturer contact information.

Transportation Methods: Both products can be transported by road, railway, or sea. For short-distance transportation, trucks are usually used; for long-distance transportation, railway freight or sea containers are chosen.

Transportation Precautions: During transportation, the products should be protected from sunlight, rain, and snow. The reels or cartons should be placed stably to avoid collision and rolling. It is strictly prohibited to drag or drop the products violently. For cables with large weight, mechanical equipment such as cranes should be used for loading and unloading.

Temperature Control: During transportation in extreme temperatures (too high or too low), appropriate measures should be taken to avoid the influence of temperature on the product performance. For example, in summer, avoid exposure to the sun for a long time; in winter, prevent the cable from being frozen and brittle.

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 warehouse will check the inventory and arrange for delivery. If the product is out of stock, the production department will arrange production as soon as possible.

Delivery Time: For in-stock products, delivery can be arranged within 3-5 working days after the order is confirmed. For customized products or large quantities of orders, the delivery time depends on the production cycle, usually 7-15 working days. The customer will be informed of the estimated delivery time in advance.

Delivery Notification: Before delivery, the customer will be notified of the delivery time, transportation method, and waybill number. After the goods are shipped, the customer can track the logistics information through the waybill number.

Sample Provision: Customers can apply for samples through the company's official website, email, or phone. The company provides free samples of appropriate lengths (usually 1-5 meters) for customers to test and verify the product performance. The customer only needs to bear the express delivery fee.

Sample Delivery: The samples are packaged in small cartons or envelopes to ensure they are not damaged during transportation. The samples are delivered by express companies such as DHL, FedEx, or local courier services, and the customer will receive a tracking number to monitor the delivery status.

Sample Follow-up: After the customer receives the samples, the sales team will conduct a follow-up to inquire about their feedback on the product performance. Technical support is provided promptly if the customer has any questions regarding sample testing or application scenarios, helping them make informed purchasing decisions.

Both products come with a quality guarantee period of 10 years from the date of delivery. During this period, if there are quality issues such as insulation breakdown, conductor oxidation, or sheath cracking caused by manufacturing defects, the company will provide free replacement or repair services.

The guarantee does not cover damages caused by improper installation, misuse, natural disasters, or external mechanical forces beyond the product's designed tolerance.

A dedicated technical team is available to provide professional guidance, including installation advice, troubleshooting, and product maintenance. Customers can reach the technical support team via phone, email, or online chat, with a response time of within 24 hours.

For large-scale projects, the company can dispatch technical personnel to the site for on-site guidance during installation and commissioning to ensure the products are used correctly.

If customers have complaints about product quality or service, they can submit feedback through the company's official website, email, or phone. The after-sales department will record the details of the complaint and initiate an investigation within 48 hours.

A written response with a solution will be provided to the customer within 5 working days. The company will track the implementation of the solution until the customer is satisfied, continuously improving service quality based on feedback.

In case of product damage that requires maintenance or replacement during use (not covered by the quality guarantee), the company can provide paid maintenance services. The cost will be quoted to the customer in advance based on the extent of the damage and the required parts.

Replacement products will be delivered within the agreed time after the customer confirms the order, ensuring minimal disruption to their project progress.

Both Zr-BV-1×25mm² 450/750V copper core PVC insulated wire and Zc-YJV cable comply with international and national standards, including GB/T 5023 (for PVC Insulated Wires), GB/T 12706 (for Power Cables), and IEC 60228 (for conductors), IEC 60332 (for flame retardancy).

They have obtained mandatory certifications such as CCC (China Compulsory Certification) and are also certified by international organizations like UL (Underwriters Laboratories) and CE (Conformité Européenne), making them suitable for use in both domestic and international markets.

The materials used in the products meet environmental protection requirements, such as RoHS (Restriction of Hazardous Substances) standards, ensuring they do not contain harmful substances like lead, mercury, or cadmium, and are environmentally friendly during use and disposal.

The wire should be stored in a dry, well-ventilated warehouse with a temperature between 0℃ and 30℃ and relative humidity ≤70%. It should be kept away from direct sunlight, heat sources, and corrosive gases.

The coils or reels should be placed on pallets to avoid contact with the ground, preventing moisture absorption. They should be stacked neatly with a maximum stacking height of 3 layers to prevent deformation or damage.

The storage period should not exceed 2 years from the date of production. If stored for a longer period, the product should be re-inspected for insulation performance before use to ensure it meets the required standards.

The cable should be stored in a clean, dry warehouse, avoiding exposure to rain, snow, or standing water. The warehouse should be free from corrosive substances and have good ventilation.

Cable reels should be placed horizontally on sturdy supports to prevent rolling. For long-term storage, the reels should be rotated every 3 months to avoid uneven pressure on the cable, which could cause deformation.

The storage temperature should be between -15℃ and 40℃. If the cable is stored in a low-temperature environment for an extended period, it should be gradually acclimated to room temperature before use to prevent the sheath from becoming brittle.

The production process of both products adopts energy-saving measures, such as using high-efficiency motors in production equipment and recycling waste materials (e.g., copper scraps, plastic residues) to reduce resource consumption and environmental pollution.

The PVC insulation and sheath materials are recyclable, and the company encourages customers to return used products for proper recycling to minimize environmental impact.

The long service life of the products (over 30 years for Zc-YJV cable) reduces the frequency of replacement, contributing to resource conservation and sustainable development. The flame-retardant properties also help reduce the risk of fire, protecting lives and property and reducing the environmental impact of fire accidents.