U1000 R2V 4× 1.5mm² 4× 2.5mm² Copper Power Cable

Conductor Parameters: Composed of 4 Copper Conductors with a cross-sectional area of 1.5mm². Each conductor is formed by stranding 19 high-purity Copper Wires with a diameter of 0.3mm, with a stranding pitch of 6mm-8mm. The diameter of a Single Core Conductor is approximately 1.8mm. At 20℃, the DC resistance of a Single Core is ≤12.1Ω/km. The total weight of the 4 Conductors is about 80kg per kilometer, and they can withstand a tensile force of ≥3kN, which can meet the mechanical strength requirements of general fixed wiring scenarios.

Insulation Parameters: The insulation layer is made of polyvinyl chloride (PVC) material, with a thickness ranging from 0.7mm to 0.9mm, and the thinnest part is not less than 0.6mm. The insulation resistance is ≥100MΩ·km, the dielectric loss tangent is ≤0.03 (at 50Hz), and the breakdown strength is ≥15kV/mm. This insulation layer can work for a long time within the temperature range of -15℃ to 70℃, and can withstand a high temperature of 80℃ in the case of short-term overload (within 1 hour), ensuring that it can still maintain good insulation performance under certain temperature fluctuations.

Sheath Parameters: The sheath is also made of PVC material, with a thickness of 0.6mm-0.8mm, an average thickness of ≥0.7mm, and the thinnest part of ≥0.5mm. It has a tensile strength of ≥12MPa and an elongation at break of ≥150%, with good mechanical properties, which can resist certain external impact and wear. The oxygen index is ≥28, with basic flame retardant performance, which can delay the spread of fire to a certain extent in case of fire.

Overall Parameters: The rated voltage is 1000V, which meets the voltage requirements of low-voltage power distribution systems. The overall outer diameter of the cable is about 8mm-10mm, and the bending radius is ≥4 times the outer diameter (about 32mm-40mm), which is convenient for laying in narrow spaces. The weight per kilometer is about 110kg. The current-carrying capacity when laid in air is about 16A-18A, and when laid in a pipe, it is about 13A-15A, all in line with relevant industry standards, and can meet the power demand of most low-voltage power distribution scenarios.

Conductor Parameters: Contains 4 Copper Conductors with a cross-sectional area of 2.5mm². Each conductor is formed by stranding 19 copper wires with a diameter of 0.4mm, with a stranding pitch of 8mm-10mm. The diameter of a single core conductor is approximately 2.3mm. At 20℃, the DC resistance of a single core is ≤7.41Ω/km. The total weight of the 4 conductors is about 120kg per kilometer, and they can withstand a tensile force of ≥4kN. The mechanical strength is better than that of the 4×1.5mm² cable, which is suitable for scenarios with slightly higher requirements on mechanical properties.

Insulation Parameters: The PVC Insulation layer has a thickness of 0.8mm-1.0mm, and the thinnest part is ≥0.7mm. The insulation resistance is ≥100MΩ·km, the dielectric loss tangent is ≤0.03 (at 50Hz), and the breakdown strength is ≥15kV/mm. The long-term operating temperature range is also -15℃ to 70℃, and it can withstand a high temperature of 80℃ during short-term overload, with stable and reliable insulation performance.

Sheath Parameters: The PVC Sheath has a thickness of 0.7mm-0.9mm, an average thickness of ≥0.8mm, and the thinnest part of ≥0.6mm. It has a tensile strength of ≥12MPa, an elongation at break of ≥150%, and an oxygen index of ≥28. Its mechanical properties and flame retardant performance are equivalent to those of the 4×1.5mm² cable, but due to the increased thickness, the overall protective performance is better.

Overall Parameters: The rated voltage is 1000V, the overall outer diameter is about 10mm-12mm, and the bending radius is ≥4 times the outer diameter (about 40mm-48mm). The weight per kilometer is about 160kg. The current-carrying capacity when laid in air is about 24A-26A, and when laid in a pipe, it is about 20A-22A, which can meet the power supply demand of high-power electrical equipment and comply with industry standards and specifications.

4×1.5mm² Cable: In residential buildings, it is mainly used for wiring of lighting systems, such as the connection between lamps and switches in living rooms, bedrooms, corridors and other areas. Its slender outer diameter is convenient for laying in pipes inside walls without occupying too much space. At the same time, it is also suitable for socket circuits of small household appliances, such as computers, printers in studies, electric fans, humidifiers in bedrooms and other low-power electrical equipment, which can stably provide power support for these equipment. In office buildings, it can be used for lighting in small office areas and power supply for low-power office equipment, such as spotlights in conference rooms and peripheral equipment of projectors.

4×2.5mm² Cable: It is mostly used in areas with concentrated high-power electrical appliances such as kitchens and bathrooms in residences, and can be connected to electric water heaters, microwave ovens, range hoods, induction cookers and other equipment. These equipment have high power and high requirements on the current-carrying capacity of cables, and this cable can meet their power demand. In commercial buildings, it is suitable for power supply of air conditioners, freezers and other equipment in small shops, as well as power supply lines of copiers, large printers and other office equipment in office buildings, ensuring stable power supply during the operation of these equipment.

4×1.5mm² Cable: Often used as a control loop cable. In industrial automated production lines, it is used to connect small motors, sensors and control cabinets, transmit control signals and provide a small amount of power, ensuring the precise control and coordinated operation of equipment. For example, in the control of assembly line conveyors, it connects position sensors with the control host to ensure accurate start-stop and speed adjustment of the conveyor.

4×2.5mm² Cable: Suitable for Power Lines of workshop auxiliary equipment, such as power supply for ventilation fans, small water pumps, small compressors and other equipment. Although these equipment are not particularly powerful, they need stable power supply to ensure continuous operation, and the current-carrying capacity and stability of this cable can meet their requirements. It is also used in local power distribution of some small industrial machinery to provide reliable power for the operation of machinery.

4×1.5mm² Cable: Can be used in municipal road lighting systems as branch lines from street lamp control boxes to individual street lamps. Since the power of street lamps is relatively small, this cable can meet their power supply needs, and the weather resistance of the PVC sheath can adapt to the outdoor natural environment. It is also commonly used in wiring of landscape lighting systems in parks, squares and other places, such as power supply lines of lawn lamps and buried lamps. Its small outer diameter is convenient for laying under green belts and pavements.

4×2.5mm² Cable: In municipal engineering, it can be used for power supply of some small municipal facilities, such as control lines of traffic lights, control and power hybrid lines of small pump stations. It is also used in power supply lines of some outdoor small public facilities, such as water heaters and hair dryers in public toilets, and can adapt to the influence of outdoor wind and rain.

4×1.5mm² Cable: In the agricultural field, it can be used for lighting of small agricultural greenhouses and control lines of small irrigation equipment, providing power support for lighting and equipment operation in greenhouses. In small laboratories, it is used as an auxiliary power supply line for experimental equipment to connect some low-power experimental instruments.

4×2.5mm² Cable: In the local auxiliary power supply of small data centers, it can be used for power supply lines of some small air conditioning equipment and cabinet cooling fans. In the low-voltage power distribution system of ships, it is suitable for power supply of some small equipment, such as lighting in cabins and small ventilation equipment, and its stable performance can adapt to the special environment of ships.

Appearance: Both cables have a circular structure with smooth and flat surfaces. The sheath color is mostly black, which has good dirt resistance, can keep the appearance clean during use, and can also blend with most environments. The surface of the cable is printed with clear marks, including model specifications (such as U1000 R2V 4×1.5mm²), rated voltage, manufacturer, certification marks (such as CCC certification), meter marks, etc., which is convenient for users to identify, cut and trace.

Structure: The cable adopts a 4-core parallel or stranded arrangement structure. The 4 Insulated Conductors are closely arranged together, and the outer layer is wrapped with a PVC sheath to form a whole. This structure makes the cross-section of the cable compact, occupies small space, and is convenient for laying in narrow spaces such as pipes and trunking. The conductor, insulation layer and sheath are closely combined with no obvious gaps, which can effectively prevent moisture and impurities from entering the cable and ensure the stable performance of the cable.

Details: The end of the cable is specially treated with neat cuts and no burrs, which is convenient for connecting with terminals and equipment. During the production of the sheath, the thickness of the sheath is uniform through precise mold control, ensuring the overall quality and performance stability of the cable.

Wire Drawing: First, high-purity electrolytic copper rods are drawn through a wire drawing machine in multiple passes to make fine copper wires with diameters of 0.3mm (for 4×1.5mm² cables) and 0.4mm (for 4×2.5mm² cables). During the drawing process, a special lubricant is used to lubricate and cool the copper wires to reduce friction between the copper wires and the mold, prevent the surface of the copper wires from being scratched, and ensure the surface quality and dimensional accuracy of the copper wires. The drawn copper wires need to be annealed. By heating, the internal structure of the copper wires is changed, the internal stress generated during the drawing process is eliminated, and the flexibility and ductility of the copper wires are improved, which is convenient for the subsequent stranding process.

Stranding: The annealed copper wires are stranded on a stranding machine according to the specified number (19 pieces) to form a single-core conductor. During stranding, a suitable stranding pitch is set according to the specifications of the cable (6mm-8mm for 4×1.5mm², 8mm-10mm for 4×2.5mm²), and the copper wires are evenly stranded together through the rotation of the stranding machine. During the stranding process, the tension of the copper wires should be uniform to make the Stranded Conductor round and tight, avoiding defects such as looseness and bulging. The stranded conductor needs to undergo appearance and size inspection to ensure that it meets relevant standards.

Material Preparation: PVC insulation materials are stirred and mixed to ensure that various additives are evenly distributed in the materials. Then, the mixed insulation materials are dried to remove moisture in the materials, preventing defects such as bubbles caused by moisture evaporation during the extrusion process. The moisture content of the dried insulation materials should be ≤0.5%.

Extrusion Molding: The stranded single-core conductor is fed into the insulation extruder, and the dried PVC insulation material is added into the hopper of the extruder at the same time. The barrel of the extruder is divided into multiple heating zones. By controlling the temperature of different zones (usually between 150℃ and 180℃), the PVC insulation material is gradually melted and plasticized. The molten insulation material is evenly extruded and wrapped on the surface of the conductor through an extrusion mold to form an insulation layer. The size of the mold is precisely designed according to the thickness requirements of the insulation layer to ensure uniform thickness of the insulation layer.

Cooling and Solidification: The extruded Insulated Wire core immediately enters a cooling water tank for cooling. The water temperature of the cooling water tank is controlled between 20℃ and 30℃. Through the rapid cooling effect of cold water, the insulation layer is quickly solidified and shaped to ensure the dimensional stability and performance of the insulation layer. The cooled insulated wire core needs to undergo appearance inspection to check whether the surface is smooth, whether there are bubbles, depressions, scratches and other defects, and measure the thickness of the insulation layer to ensure that it meets the specification requirements.

For 4-Core Cables, it is necessary to carry out cabling treatment on the 4 insulated wire cores. The 4 insulated wire cores are placed on the pay-off rack of the cabling machine according to a certain arrangement (usually parallel or stranded), and the 4 insulated wire cores are stranded together through the traction and rotation of the cabling machine. During the cabling process, in order to make the cable core round and stable, filling materials (such as polypropylene rope) can be added to the center of the cable core. The selection of filling materials should ensure their chemical stability and aging resistance, and will not have a negative impact on the performance of the cable. The cabling pitch is determined according to the specifications and structural requirements of the cable to ensure that the cabled cable has good flexibility and stability.

The cabled core needs to be tied tightly, usually with alkali-free glass fiber tape or polyester tape to prevent the cable core from loosening during subsequent processing and laying. When wrapping, it should be tight and flat, without overlapping or missing wrapping.

Material Preparation: Similar to the treatment of insulation materials, PVC sheath materials are stirred, mixed and dried to remove impurities and moisture in the materials, ensuring the quality of the sheath materials.

Extrusion Molding: The cabled core is fed into the sheath extruder, and the molten PVC sheath material is evenly extruded and wrapped on the outer layer of the cable core through an extrusion mold to form a sheath. The size of the extrusion mold is precisely designed according to the outer diameter requirements of the cable to ensure uniform thickness of the sheath. The extrusion temperature is controlled between 160℃ and 190℃ to fully plasticize the sheath material and make it closely combined with the cable core.

Cooling and Solidification: The extruded cable enters a cooling water tank for cooling, and the cooling method is the same as that for the insulation layer, so that the sheath is quickly solidified and shaped. The cooled cable has a smooth surface and stable size. During the sheath extrusion process, printing operation is carried out at the same time. The model specifications, rated voltage, manufacturer, certification marks and other information of the product are printed on the surface of the sheath through a printing machine. The printing should be

Traction and Take-up: The cooled cable is pulled to the take-up machine by the traction machine and neatly coiled on the cable reel according to the specified length (usually 100m, 200m, 500m, etc.). During the take-up process, the traction tension should be controlled to avoid excessive stretching and deformation of the cable, ensuring the length accuracy and appearance quality of the cable.

Appearance Inspection: Conduct a comprehensive inspection of the cable surface to check whether the sheath is smooth, whether there are bubbles, scratches, depressions, cracks and other defects, whether the printing is clear and complete, and whether the conductor is exposed.

Dimension Measurement: Use calipers, micrometers and other tools to measure the outer diameter of the cable, the thickness of the insulation layer, the thickness of the sheath and other dimensional parameters to ensure they meet the specification requirements.

Electrical Performance Test: Including insulation resistance test, voltage withstand test, etc. The insulation resistance test uses an insulation resistance tester to measure the insulation resistance of the cable under specified temperature and humidity conditions, which should be ≥100MΩ·km; the voltage withstand test applies an AC voltage of 2000V for 1 minute, and the cable should not break down.

Mechanical Performance Test: Perform tensile strength and elongation at break tests on the cable sheath using a tensile testing machine. The test results should meet the requirements of tensile strength ≥12MPa and elongation at break ≥150%. At the same time, conduct a bending test. Bend the cable repeatedly ≥5000 times according to the specified bending radius. After bending, the cable should have no cracks or damage, and the electrical performance can still meet the requirements.

Other Tests: According to product standards and customer requirements, flame retardant performance tests, aging resistance tests, etc. may also be required to ensure the service performance of the cable in specific environments. Only after all inspection items are qualified can the cable leave the factory.

Cable Reel: Wooden cable reels or plastic cable reels are used for packaging. Wooden cable reels are made of high-quality pine or fir, which have been dried with a moisture content of ≤15% to prevent deformation and cracking during transportation and storage. The structure of the cable reel includes a reel shaft, baffles and spokes. The diameter of the reel shaft is determined according to the specifications and length of the cable. For a 4×1.5mm² cable with a length of 100 meters per reel, the reel shaft diameter is about 300mm, and the baffle diameter is about 600mm; for a 4×2.5mm² cable with a length of 100 meters per reel, the reel shaft diameter is about 350mm, and the baffle diameter is about 700mm. Plastic cable reels are injection-molded from high-strength polyethylene materials, which have the advantages of light weight, corrosion resistance and high strength, and are suitable for short-distance transportation and packaging of small cables.

Packaging Film: After the cable is coiled on the cable reel, a layer of polyethylene film with a thickness of 0.05mm-0.1mm is wrapped around the outer layer of the cable to prevent moisture and dust, and protect the cable surface from pollution and damage.

Protective Cover: Plastic protective covers are installed on both sides of the cable reel to prevent the cable ends from being collided and squeezed, and to avoid moisture entering the cable.

The cable is neatly coiled on the cable reel. During coiling, the tension is controlled to make the cable arranged tightly and neatly without crossing or overlapping. After coiling, the cable reel is fixed on both sides with strapping to prevent the cable from loosening during transportation.

For short-length cables (such as 10m-50m), carton packaging can be used. The cable is neatly placed in the carton, and buffer materials such as foam are filled in the carton to avoid collision between cables during transportation.

Product labels are pasted on the cable reel or carton, indicating product name, specification model, length, weight, production batch number, production date, implementation standard, manufacturer and other information.

In addition to the basic product information, the packaging is also printed with warning signs, such as "Do not stack heavily", "Moisture-proof and sun-proof", "Handle with care", etc., to remind operators of precautions in the form of diagrams and text.

For exported products, the packaging marks also need to contain English information to meet the requirements of international transportation and sales.

Road Transportation: Suitable for short and medium-distance transportation. Trucks are used for transportation. The compartment must be clean and dry without sharp objects. During loading, the cable reels are placed upright and fixed in the compartment with steel wire ropes and other fixing devices to prevent shaking and tipping during transportation.

Railway Transportation: For long-distance transportation, railway transportation can be chosen. The cable reels are placed on the flat cars of railway freight cars, with good fixing and protective measures to ensure transportation safety.

Sea Transportation: Exported products are usually transported by sea. The cable reels are loaded into containers, which should be kept dry and ventilated to avoid moisture of the cables. The cable reels are fixed with wooden frames in the container to prevent collision during transportation.

During transportation, the cable reels must be kept in an upright state, and must not be placed flat or upside down to avoid damage to the cables due to extrusion.

Avoid severe collision and vibration of the cable reels to prevent damage to the outer sheath and insulation layer of the cables.

During transportation, moisture-proof, sun-proof and rain-proof measures should be taken. Rain-proof cloth can be covered on the cable reels to avoid moisture and direct sunlight.

When loading and unloading cables, special hoisting equipment is used. The lifting points should be located at the center of both sides of the cable reel to avoid deformation of the cable reel or damage to the cable caused by single-point hoisting.

After the customer places an order, the sales department confirms the order information, including product specifications, quantity, delivery date, delivery location, etc., and transmits the order information to the production department or warehouse.

The warehouse prepares goods according to the order information. For products in stock, outgoing inspection is carried out to ensure that the product quality meets the requirements; for products that need to be produced, the production department arranges the production plan, completes the production on time and conducts inspection.

After the product passes the inspection, it is packaged according to the packaging requirements, and transport vehicles are arranged.

Before delivery, warehouse personnel and transport drivers check the product information and quantity together, sign the goods delivery note, and the driver confirms receipt of the goods.

The sales department notifies the customer of the delivery information, including the mode of transportation, vehicle number, estimated arrival time, etc., so that the customer can arrange for receipt.

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

For products that need to be produced, the delivery time is determined according to the production cycle, usually 7-15 working days, depending on the product specifications and order quantity.

The company can provide samples of 4×1.5mm² and 4×2.5mm² cables according to customer requirements. The length of each sample is usually 1m-5m, which is free of charge, but the customer needs to bear the freight.

For special specifications or customized samples, the company will negotiate with the customer on the sample fee and production cycle according to the actual situation.

Samples are usually delivered by express, such as DHL, FedEx, EMS, etc. The delivery time is determined according to the destination, usually 3-7 days for domestic areas and 7-15 days for international areas.

The sample package is marked with "Sample" and product information to facilitate the customer's identification and receipt.

The company provides a quality guarantee period of 12 months from the date of delivery of the product. During the guarantee period, if the product has quality problems due to manufacturing defects, the company will provide free replacement or repair services.

For product quality problems caused by improper use, transportation or storage by the customer, the company can provide maintenance services, and the relevant costs shall be borne by the customer.

The company has a professional technical team to provide technical support to customers, including product selection, installation guidance, use precautions, etc. Customers can consult through telephone, email, online customer service and other channels.

For large-scale projects, the company can send technical personnel to the site to provide on-site guidance and services.

If the customer has any complaints about the product quality or service, the company will respond within 24 hours and send personnel to investigate and deal with it. A solution will be proposed within 3 working days to ensure customer satisfaction.

If the product has quality problems that cannot be repaired, or the product specifications and models do not match the order requirements due to the company's reasons, the company will provide return and exchange services, and bear the relevant transportation costs.

For return and exchange applications put forward by customers due to their own reasons, they must be within 7 days from the date of receipt of the goods, and the product must be in an unopened and unused state. The customer shall bear the round-trip transportation costs and a certain percentage of the handling fee.