Electric Cable 3X25 mm2 4X25mm² 5X25mm² Aluminum or Copper Power Cable

Copper Core cables: High-purity electrolytic copper is used with a purity of ≥99.95%. The high-purity copper material ensures excellent conductivity. The conductor made by the compact stranding process has a tight structure, reducing gaps inside the conductor, improving the filling coefficient, and reducing the impact of the skin effect. At 20℃, its DC resistance is ≤0.727Ω/km. The low resistance means less energy loss during power transmission, which can efficiently transmit electrical energy to electrical equipment, making it suitable for scenarios with high requirements for conduction efficiency.

Aluminum Core cables: High-purity aluminum is selected with a purity of ≥99.5%, and it is also processed by the compact stranding process. The DC resistance at 20℃ is ≤1.208Ω/km. Although the resistance is slightly higher than that of copper Core Cables, the cost is relatively low and the weight is lighter. It can reduce construction difficulty and cost during long-distance laying, and has obvious advantages in cost-sensitive projects.

XLPE insulation layer: It can withstand a temperature of up to 90℃, with a volume resistivity of ≥1×10¹⁴Ω·cm, and has excellent insulation performance. It can withstand an ambient temperature difference of -40℃ to 90℃, and can maintain a stable insulation effect in complex environments such as high temperature, humidity, and cold, without performance degradation due to temperature changes. The insulation layer has a uniform thickness, with an eccentricity of ≤15%, avoiding insulation defects caused by local thin insulation. The partial discharge amount is ≤10pC, further ensuring the safety of power transmission.

PVC Insulation layer: It can withstand a temperature of 70℃, with good flame retardancy and mechanical properties. Its cost is low, making it suitable for general dry environments. The insulation layer also has a uniform thickness, with an eccentricity of ≤15%, and a partial discharge amount of ≤10pC, which can meet the insulation requirements in ordinary scenarios.

3X25mm² cable: Composed of 3 conductors of 25mm², each conductor is wrapped with an insulation layer and then stranded together. The overall structure is compact, easy to lay and install, and is mainly used for three-phase Power Lines.

4X25mm² cable: Contains 3 phase lines and 1 neutral line. The 4 Conductors of 25mm² are respectively insulated and then stranded. The setting of the neutral line enables it to adapt to distribution scenarios with both three-phase and single-phase equipment.

5X25mm² cable: An additional grounding line is added to the 4-core cable, and the 5 conductors of 25mm² are each insulated and then stranded. The existence of the grounding line enhances electrical safety and can timely conduct fault current to the ground.

3X25mm² copper core cable: Commonly used to supply power to large three-phase equipment such as three-phase motors, water pumps, and fans in the plant. These equipment have large power and high requirements for the stability and efficiency of power transmission. The low loss and high conductivity of copper core cables can meet their needs, such as providing continuous and stable power for three-phase motors of about 30kW.

4X25mm² cable: Suitable for workshops with both three-phase and single-phase equipment. For example, some assembly workshops have both three-phase stamping equipment and single-phase lighting, small electric tools, etc. 4-core cables can supply power to these equipment at the same time, simplifying the distribution line.

5X25mm² cable: In industrial areas with high safety requirements, such as chemical workshops, the equipment operating environment may have certain dangers. The grounding line of 5-core cables can timely conduct equipment leakage to the ground, preventing personal electric shock and equipment damage.

4X25mm² cable: Widely used in commercial buildings such as shopping malls and office buildings. It can be used to connect the distribution main line and the floor distribution box, supplying power to three-phase equipment such as central air conditioners and elevators, and single-phase equipment such as lighting and office equipment, meeting the diverse power needs of commercial places.

5X25mm² cable: In areas such as outpatient buildings and inpatient departments of hospitals, where electrical safety requirements are extremely high, 5-core cables can provide safe and reliable power for medical equipment. The grounding line ensures that the power can be quickly cut off when the equipment leaks, protecting the safety of patients and medical staff.

3X25mm² aluminum core cable: Commonly used for power supply of public facilities in the community, such as three-phase water pumps in the pump room. Aluminum core cables have low cost, which can reduce the construction and maintenance costs of the community, and can meet the power needs of equipment such as water pumps.

4X25mm² cable: Can be used for distribution branch lines in the community, supplying power to three-phase elevators in residential buildings and single-phase electrical equipment of each household, realizing power distribution conveniently and quickly.

5X25mm² cable: In the line from the community's distribution room to important facilities (such as fire control rooms), 5-core cables can ensure the safety of power supply and ensure the normal operation of fire-fighting equipment in emergency situations.

3X25mm² cable: Used for the main line of street lamp power supply (three-phase power supply) beside municipal roads, providing power for multiple street lamps. Copper core or aluminum core cables are selected according to the project budget and distance.

4X25mm² cable: In places such as parks and squares, it can supply power to three-phase fountain equipment and single-phase landscape lighting, meeting the diverse power needs of municipal facilities.

5X25mm² cable: In the power distribution of auxiliary facilities at subway stations, such as ventilation equipment and emergency lighting, 5-core cables can provide safe and reliable power, ensuring the safety of subway operation.

Copper core conductor: High-purity electrolytic copper ingots are selected and made into copper rods through processes such as smelting and rod casting. The copper rod is drawn into a single wire of the required diameter on a wire drawing machine. During the wire drawing process, the wire drawing speed and die size are strictly controlled to ensure uniform diameter of the single wire. Then, multiple single wires are stranded by a compact stranding machine. During stranding, the stranding pitch and pressure are precisely controlled to make the conductor structure tight and improve the filling coefficient. The Stranded Conductor is annealed to eliminate internal stress and enhance flexibility and conductivity.

Aluminum Core Conductor: High-purity aluminum ingots are made into aluminum rods through smelting and rod casting, and then drawn into single wires. The compact stranding process is also used to strand the single wires into conductors. During the stranding process, relevant parameters are controlled to ensure the structural stability and conductivity of the conductor.

XLPE insulation layer: An extruder is used to extrude XLPE material onto the outer layer of the conductor. Before extrusion, the XLPE material needs to be dried to remove moisture. During the extrusion process, extrusion temperature, speed, and pressure are precisely controlled to ensure uniform thickness of the insulation layer according to the conductor specifications. The extruded Insulated Wire core undergoes cross-linking treatment, and the XLPE material forms a stable three-dimensional network structure by heating, improving its temperature resistance and insulation performance.

PVC insulation layer: PVC material is heated and plasticized in an extruder and then extruded onto the conductor. The extrusion temperature and speed are controlled to ensure uniform thickness of the sheath layer, smooth surface, close combination with the conductor, and no defects such as bubbles and cracks.

Raw material inspection: Strict inspections are carried out on raw materials such as electrolytic copper, aluminum ingots, XLPE Insulation Materials, and PVC Insulation Materials. Only raw materials that meet quality standards can enter the production process.

In-process inspection: Quality control points are set in each production process such as conductor manufacturing, insulation extrusion, and cabling to inspect semi-finished products, such as conductor diameter, DC resistance, insulation layer thickness, and eccentricity, to ensure that the product quality of each process is qualified.

Finished product inspection: Finished cables need to undergo a number of strict tests, including power frequency withstand voltage test (3kV/5min without breakdown), insulation resistance test, partial discharge test (≤10pC), mechanical performance test (such as tensile strength and elongation at break), etc. A certain number of samples are taken from each batch of products for testing. Only after all indicators are qualified can they leave the factory, accompanied by a detailed test report to ensure that the product quality meets relevant standards.

Road transportation: Use special freight vehicles, such as flatbed trucks or box trucks. When loading cable reels, ensure that the reels are placed stably and firmly fixed on the vehicle with steel wire ropes or chains to prevent rolling, tilting, or collision during transportation. During transportation, abide by traffic rules, avoid violent operations such as sudden braking and sharp turns, and reduce the impact on the cable. During long-distance transportation, regularly check the fixing of the reels and handle problems in a timely manner.

Railway transportation: Select appropriate railway freight cars, place the cable reels reasonably, and leave sufficient gaps between the reels to avoid mutual extrusion. Use special fixing devices to fix the reels in the carriage to prevent movement due to vibration during train operation.

Sea transportation: For cables transported by ship, place the reels in a ventilated and dry cargo hold to avoid moisture. Place moisture-proof materials under the reels and fix them to the fixed points of the cabin with ropes to prevent displacement or collision due to during ship navigation. At the same time, take rainproof and moisture-proof measures to avoid the cable being soaked in water.

Storage site: Choose a dry, ventilated, cool warehouse without corrosive gases and dust. The ground of the warehouse should be flat and solid, preferably with a moisture-proof layer to prevent ground moisture from eroding the cable. Avoid direct sunlight in the warehouse and keep away from heat sources (such as heating, stoves, etc.) to prevent aging of the cable insulation layer.

Storage method: Cable reels should be stored vertically, not horizontally, to prevent reel deformation or cable extrusion. Keep a certain distance between reels, generally not less than 0.5 meters, to facilitate ventilation and handling. For cables stored for a long time, regularly turnent, such as some assembly workshops that have both three-phase stamping equipment and single-phase lighting and small electric tools. The 4-core cable can supply power to these devices simultaneously, simplifying the distribution lines.

5X25mm² cable: In industrial areas with high safety requirements, such as chemical workshops where the equipment operating environment may be hazardous, the Grounding Wire of the 5-core cable can promptly conduct equipment leakage to the ground, preventing electric shock to personnel and damage to equipment.

4X25mm² cable: Widely used in commercial buildings such as shopping malls and office buildings, it can be used to connect the main distribution line to the floor distribution box, supplying power to three-phase equipment such as central air conditioners and elevators, as well as single-phase equipment such as lighting and office equipment, meeting the diverse electricity needs of commercial premises.

5X25mm² cable: In areas of hospitals such as outpatient buildings and inpatient departments with extremely high requirements for electrical safety, the 5-core cable can provide safe and reliable power for medical equipment. The grounding wire ensures that power is quickly cut off in case of equipment leakage, protecting the safety of patients and medical staff.

3X25mm² aluminum core cable: Often used for power supply to public facilities in the community, such as three-phase water pumps in pump rooms. Aluminum core cables have lower costs, which can reduce the construction and maintenance costs of the community and meet the power needs of equipment such as water pumps.

4X25mm² cable: Can be used for distribution branch lines in the community to supply power to three-phase elevators in residential buildings and single-phase electrical equipment in each household, facilitating the efficient distribution of electricity.

5X25mm² cable: In the lines from the community's distribution room to important facilities such as fire control rooms, the 5-core cable can ensure the safety of power supply, ensuring that fire-fighting equipment operates normally in emergency situations.

3X25mm² cable: Used for the main power supply line (three-phase power supply) of street lamps beside municipal roads, supplying power to multiple street lamps. Copper or aluminum core cables are selected based on the project budget and distance.

4X25mm² cable: In places such as parks and squares, it can supply power to three-phase fountain equipment and single-phase landscape lighting, meeting the diverse electricity needs of municipal facilities.

5X25mm² cable: In the distribution of auxiliary facilities at subway stations, such as ventilation equipment and emergency lighting, the 5-core cable can provide safe and reliable power, ensuring the safety of subway operations.

Copper core conductor: High-purity electrolytic copper ingots are selected and made into copper rods through processes such as smelting and rod casting. The copper rod is drawn into a single wire of the required diameter on a wire drawing machine. During the wire drawing process, the drawing speed and die size are strictly controlled to ensure uniform diameter of the single wire. Then, multiple single wires are stranded by a compact stranding machine. During stranding, the stranding pitch and pressure are precisely controlled to make the conductor structure tight and improve the filling coefficient. The stranded conductor undergoes annealing treatment to eliminate internal stress and enhance flexibility and conductivity.

Aluminum core conductor: High-purity aluminum ingots are made into aluminum rods through smelting and casting. Then, they are drawn into single wires. The compact stranding process is also used to strand the single wires into conductors. During the stranding process, relevant parameters are controlled to ensure the structural stability and conductivity of the conductor.

XLPE insulation layer: An extruder is used to extrude XLPE material onto the conductor. Before extrusion, the XLPE material needs to be dried to remove moisture. During the extrusion process, the extrusion temperature, speed, and pressure are precisely controlled to ensure uniform thickness of the insulation layer according to the conductor specifications. The extruded insulated wire core undergoes cross-linking treatment, and the XLPE material forms a stable three-dimensional network structure by controlling the cross-linking temperature, pressure, and time, improving its temperature resistance and insulation performance.

PVC insulation layer: PVC material is heated and plasticized in an extruder and then extruded onto the conductor. The extrusion temperature and speed are controlled to ensure uniform thickness of the sheath layer, a smooth surface, no bubbles, cracks, or other defects, and close bonding with the conductor.

Raw material inspection: Strict inspections are conducted on electrolytic copper, aluminum ingots, XLPE insulation materials, PVC insulation materials, etc. Only raw materials that meet quality standards can enter the production process.

In-process inspection: Quality control points are set in each production process, such as conductor manufacturing, insulation extrusion, and cabling, to inspect semi-finished products, such as conductor diameter, DC resistance, insulation layer thickness, and eccentricity, ensuring that the quality of products in each process is qualified.

Finished product inspection: Finished cables need to undergo a number of strict tests, including power frequency withstand voltage test (3kV/5min without breakdown), insulation resistance test, partial discharge test (≤10pC), mechanical performance test (such as tensile strength and elongation at break), etc. A certain number of samples are taken from each batch of products for testing. Only when all indicators are qualified can the products leave the factory, accompanied by a detailed test report to ensure that the product quality meets relevant standards.

Road transportation: Special freight vehicles, such as flatbed trucks or box trucks, are used. When loading cable reels, ensure that the reels are placed stably and firmly fixed on the vehicle with steel wire ropes or chains to prevent rolling, tilting, or collision during transportation. During transportation, abide by traffic rules, avoid violent operations such as sudden braking and sharp turns, and reduce the impact on the cable. During long-distance transportation, regularly check the fixing of the reels and handle problems in a timely manner.

Railway transportation: Select appropriate railway freight cars, place the cable reels reasonably, and leave sufficient gaps between the reels to avoid mutual extrusion. Use special fixing devices to fix the reels in the carriage to prevent movement due to vibration during train operation.

Sea transportation: For cables transported by ship, place the reels in a ventilated and dry cargo hold to avoid moisture. Place moisture-proof materials under the reels and fix them to the fixed points of the cabin with ropes to prevent displacement or collision due to bumping during ship navigation. At the same time, take rainproof and moisture-proof measures to avoid the cable being soaked in water.

Storage site: Choose a dry, ventilated, cool warehouse without corrosive gases and dust. The ground of the warehouse should be flat and solid, preferably with a moisture-proof layer to prevent ground moisture from eroding the cable. Avoid direct sunlight in the warehouse and keep away from heat sources (such as heating, stoves, etc.) to prevent aging of the cable insulation layer.

Storage method: Cable reels should be stored vertically, not horizontally, to prevent reel deformation or cable extrusion. Keep a certain distance between reels, generally not less than 0.5 meters, to facilitate ventilation and handling. For cables stored for a long time, regularly turn them to change the stress points of the cables and prevent deformation or insulation layer aging due to long-term standing.

Temperature and humidity control: The temperature in the warehouse is controlled between -15℃ and 40℃, and the relative humidity does not exceed 75%. Install thermometers and hygrometers to regularly monitor the temperature and humidity changes in the warehouse. If necessary, take ventilation, dehumidification, and other measures to ensure that the storage environment meets the requirements.

Time limit requirements: The storage period of the cable is generally 2 years. Cables that exceed the storage period must be sampled and inspected before use, including insulation resistance testing and appearance inspection, and can only be used after passing the inspection to ensure that the performance of the cable meets the use requirements.