Detailed Description of ISO-Certified Manufacturer's Low-Voltage Power Cables with Pure Copper Strands (Insulation: PVC/PUR/XLPE Optional)
I. Core Information of the Product Itself
(I) Analysis of Specification Parameters
The low-voltage
Power Cables with pure copper strands produced by ISO-certified manufacturers have been meticulously designed in terms of specification parameters to meet power transmission requirements in different scenarios, with each parameter reflecting their high quality and adaptability.
Voltage Level: The rated voltage of these cables covers low-voltage levels of 0.6/1kV and below, where 0.6kV is the rated voltage between the core and the ground or shielding layer, and 1kV is the rated voltage between cores. This voltage range enables them to perfectly adapt to AC 50/60Hz power grids, stably transmitting power whether in the power connection of industrial automation equipment or the internal power distribution system of buildings, providing reliable power support for various small and medium-sized equipment and branch lines.
Conductor Parameters: The conductors are made of high-purity electrolytic copper with a purity of ≥99.95%. This high-purity copper material is the foundation for ensuring the excellent conductivity of the cables. The copper is made into multi-strand twisted wires through a precision stranding process, which not only increases the surface area of the conductor but also facilitates current conduction. Taking a conductor with a 10mm² cross-section as an example, its DC resistance at 20℃ is ≤0.018Ω/km. The extremely low resistance means very little energy loss during power transmission, enabling long-term efficient power transmission.
Conductors of different cross-sections have different parameter performances, with conductor cross-sections ranging from 1.5mm² to 120mm². A 1.5mm² conductor has a DC resistance of ≤12.1Ω/km at 20℃, suitable for powering some small lighting equipment; while a 120mm² conductor has a DC resistance of ≤0.158Ω/km, which can be used for power transmission of higher-power equipment. Meanwhile, the stranded structure enhances the
Flexibility of the conductor, with a minimum bending radius of only 6 times the outer diameter of the cable. This feature allows the cable to be easily laid in narrow spaces, such as in the gaps of building walls and compact spaces inside equipment, facilitating installation.
Insulation Layer Parameters: Three
Insulation Material options are available: PVC, PUR, and XLPE, each with its unique parameter characteristics.
PVC Insulation layer: It can withstand a temperature of 70℃ and maintain stable insulation performance in normal working environments. Its volume resistivity is ≥1×10¹³Ω·cm, insulation strength is ≥18kV/mm, and it has good flame retardancy with an oxygen index of ≥30%, making it suitable for use in dry indoor environments.
PUR insulation layer: It can withstand a temperature of 90℃ and -40℃ low temperature, working normally within a relatively wide temperature range. It has a volume resistivity of ≥1×10¹⁴Ω·cm, insulation strength of ≥20kV/mm, and excellent oil resistance and wear resistance. After the oil resistance test, its volume change rate is ≤10% and the number of wear-resistant times is ≥5000, making it suitable for use in industrial workshops and other environments with oil pollution and frequent movement.
XLPE insulation layer: It can withstand a temperature of 105℃, has an insulation resistance of ≥10¹⁴Ω·cm, insulation strength of ≥25kV/mm, and excellent anti-aging performance. After 1000 hours of aging test, its tensile strength change rate is ≤20% and elongation at break change rate is ≤20%, enabling it to operate stably in humid and high-temperature environments, such as underground pipe corridors and new energy charging piles.
The thickness of the three insulation materials also varies according to the cross-section of the conductor to ensure good insulation effect. For a 1.5mm² conductor, the thickness of the PVC insulation layer is about 0.8mm, the PUR insulation layer is about 1.0mm, and the XLPE insulation layer is about 0.9mm; for a 120mm² conductor, the thickness of the PVC insulation layer is about 2.5mm, the PUR insulation layer is about 2.8mm, and the XLPE insulation layer is about 2.6mm. Moreover, all three insulation materials have passed the RoHS environmental certification, do not contain heavy metals such as lead, mercury, and cadmium, and other harmful substances, meeting environmental protection requirements.
Current-Carrying Capacity Parameters: The current-carrying capacity of the cable is one of its important performance indicators. Cables of different cross-sections have different current-carrying capacities under different laying methods. Taking a 4mm² cable as an example, when laid in the air, the current-carrying capacity reaches 32A; when laid underground, the current-carrying capacity reaches 25A. This means that this cross-section cable can support the operation of single-phase equipment of about 7kW or three-phase equipment below 15kW.
A 1.5mm² cable has a current-carrying capacity of about 19A when laid in the air and about 15A when laid underground, which can meet the power supply needs of small household appliances; a 10mm² cable has a current-carrying capacity of about 65A when laid in the air and about 52A when laid underground, which can power higher-power industrial equipment; a 120mm² cable has a current-carrying capacity of up to 310A when laid in the air and 245A when laid underground, suitable for power transmission of large equipment. The outer diameter of the cable ranges from 6.2mm (1.5mm²) to 28.5mm (120mm²). This outer diameter size enables it to adapt to various terminal blocks and pipe-penetrating specifications, facilitating connection with different equipment and pipelines.
(II) Characteristics and Core Advantages
The low-voltage power cables with pure copper strands from ISO-certified manufacturers have significant characteristics and core advantages in the market due to their unique design and excellent performance.
1. Excellent Conductivity: High-purity electrolytic copper is used as the conductor with a purity of ≥99.95%, combined with a precision stranding process, making the cable have extremely low DC resistance and small power transmission loss. This feature ensures that electrical energy can be efficiently transmitted from the power source to the electrical equipment, reducing energy waste and operating costs, and is particularly suitable for industrial automation and new energy facilities and other fields with high requirements for power transmission efficiency.
2. Excellent Flexibility and Durability: The multi-strand
Stranded Conductor structure not only enhances the flexibility of the cable, with a minimum bending radius of only 6 times the outer diameter of the cable, facilitating laying and installation in narrow spaces, but also improves the mechanical fatigue resistance of the cable. In scenarios with frequent movement or bending, such as machine tool wiring in industrial workshops and power supply lines of outdoor mobile equipment, the cable can withstand repeated mechanical stress without being easily damaged, prolonging its service life.
3. Diversified Insulation Material Options: Three insulation materials, PVC, PUR, and XLPE, are available, each optimized for different environmental needs. The PVC insulation layer has good flame retardancy and economy, suitable for dry indoor environments; the PUR insulation layer is oil-resistant, wear-resistant, and low-temperature resistant, suitable for industrial and outdoor mobile equipment scenarios; the XLPE insulation layer is high-temperature resistant and anti-aging, suitable for humid and high-temperature environments. This diversified choice enables the cable to adapt to various complex working environments and improve its application range.
4. Rich Specification Series: The conductor cross-sections range from 1.5mm² to 120mm², which can meet the power needs of different load equipment. Whether it is small lighting equipment, household appliances, or large industrial machinery, new energy charging piles, etc., a suitable specification cable can be found. At the same time, the outer diameters of cables with different cross-sections are adapted to various terminal blocks and pipe-penetrating specifications, facilitating installation and connection and improving construction efficiency.
5. Strict Quality Control and Environmental Certification: The production process strictly follows the ISO 9001 quality management system, and every link from raw material procurement to finished product inspection is strictly controlled. The finished products need to pass a number of strict tests to ensure stable and reliable product quality. In addition, all three insulation materials have passed the RoHS environmental certification, meeting environmental protection requirements, and will not cause harm to the environment and human health, making them suitable for use in places with high environmental protection requirements.
(III) Characteristic Uses and Application Scenarios
The low-voltage power cables with pure copper strands from ISO-certified manufacturers have characteristic uses and wide application scenarios in many fields due to their excellent performance and diverse characteristics.
1. Industrial Automation Field: In industrial automation production lines, the power connection of various equipment has high requirements for cables. Cables with PUR insulation are very suitable for machine tool wiring, robot power supply lines, etc., due to their oil resistance, wear resistance, and low-temperature resistance. For example, in automobile manufacturing workshops, machine tools will come into contact with various oils during processing, and the PUR insulation layer can resist oil erosion to ensure the insulation performance of the cable; robots need frequent movement and bending during work, and the flexibility and mechanical fatigue resistance of the cable can meet their usage needs. A 10mm² cross-section PUR
Insulated Cable can be used to power higher-power automation equipment to ensure stable operation of the equipment.
2. Building Power Distribution Field: The internal power distribution system of a building needs to select suitable cables according to different areas and equipment.
PVC Insulated Cables are suitable for power distribution branches in dry indoor environments such as office buildings and residential buildings due to their good flame retardancy and economy. In the lighting systems and socket lines of office buildings, 1.5mm² and 2.5mm² cross-section PVC
Insulated Cables are commonly used, which can meet daily electricity needs. In the lines from the underground power distribution room of the building to the distribution boxes on each floor,
XLPE Insulated Cables can be selected. Their high-temperature resistance and anti-aging performance can ensure long-term stable operation in humid underground environments. 25mm² and 50mm² cross-section
XLPE Insulated Cables can meet the power transmission needs of higher power.
3. New Energy Facilities Field: New energy facilities such as new energy charging piles and solar photovoltaic systems have special requirements for cable performance. XL
PE Insulated Cables are often used in the power supply lines of new energy charging piles due to their high-temperature resistance, anti-aging, and excellent insulation performance. During the operation of the charging pile, a certain amount of heat will be generated, and the XLPE insulation layer can withstand higher temperatures without affecting the insulation performance; at the same time, in outdoor environments, the cable needs to resist the influence of natural factors such as wind, sun, and rain, and the anti-aging performance of the XLPE insulation layer ensures the service life of the cable. 16mm² and 35mm² cross-section
XLPE Insulated cables can meet the power transmission needs of charging piles with different powers.
4. Outdoor Mobile Equipment Field: Some outdoor mobile equipment, such as cranes, excavators, agricultural machinery, etc., their
Power Supply Cables need to have good flexibility, weather resistance, and wear resistance. PUR insulated cables can meet these requirements. Their -40℃ low-temperature resistance enables them to work normally in cold winters, and their wear resistance ensures that the cables are not easily damaged when rubbing against the ground or other objects. 25mm² and 50mm² cross-section PUR insulated cables can provide stable power support for these outdoor mobile equipment.
5. Underground Pipe Corridor Field: The underground pipe corridor is a comprehensive underground passage integrating power, communication, gas, water supply and drainage and other pipelines, with a humid environment and relatively high temperature. XLPE insulated cables have good moisture resistance and high-temperature resistance, making them suitable for use in underground pipe corridors. In the power transmission lines in the pipe corridor, 50mm² and 120mm² cross-section XLPE insulated cables can be used to connect different power distribution nodes to ensure the normal power supply of various equipment in the pipe corridor.
(IV) Production Process and Quality Control
The high quality of the low-voltage power cables with pure copper strands from ISO-certified manufacturers stems from advanced production processes and strict quality control systems, with every link from raw materials to finished products being 精益求精.
1. Conductor Manufacturing Process: First, high-purity electrolytic copper ingots are selected as raw materials, and copper rods are made through smelting, rod casting and other processes. During the smelting process, the temperature and impurity content are strictly controlled to ensure that the purity of the copper rod is ≥99.95%. The copper rod is drawn into single wires of different diameters through a wire drawing machine. During the wire drawing process, an advanced lubrication and cooling system is used to ensure that the surface of the single wire is smooth and the size is uniform.
Then, multiple single wires are stranded through a precision stranding machine. During stranding, the number of single wires and the stranding pitch are determined according to different cross-sectional specifications to ensure that the stranded conductor has a tight and round structure. After stranding, the conductor is annealed, heated to a certain temperature, kept warm for a period of time, and then slowly cooled to eliminate internal stress in the conductor and improve the flexibility and conductivity of the conductor. After annealing, the conductor needs to be surface-treated to remove the oxide layer and impurities on the surface to ensure the quality of the conductor.
2. Insulation Layer Extrusion Process: Different extrusion processes are adopted according to the insulation material selected by the customer (PVC, PUR, XLPE). For the PVC insulation layer, PVC resin is mixed with stabilizers, plasticizers and other additives in a certain proportion, and after mixing and granulation, it is heated and plasticized in an extruder, and then extruded and coated on the conductor through a mold. During the extrusion process, the extrusion temperature, speed and pressure are strictly controlled to ensure that the thickness of the insulation layer is uniform, with a deviation of ≤10%, and the surface is smooth without bubbles, cracks and other defects.
The extrusion process of the PUR insulation layer is similar to that of PVC, but the extrusion parameters need to be adjusted according to the characteristics of the PUR material, such as controlling the temperature between 160-190℃ to ensure full plasticization of the material. The extrusion of the XLPE insulation layer adopts a three-layer co-extrusion process, that is, the inner shielding layer, the insulation layer and the outer shielding layer are extruded at the same time. This process can ensure the close combination between layers, reduce interface defects, and improve insulation performance. The extruded XLPE insulation layer needs to undergo cross-linking treatment, and the XLPE molecules form a three-dimensional network structure through heating with steam or nitrogen, thereby improving its high-temperature resistance and anti-aging performance.
3. Cabling Process: For
Multi-Core cables, the insulated single-core wires need to be cabled according to a certain stranding direction and pitch. During the cabling process, suitable filling materials are used to fill the gaps between the core wires to make the structure of the cable round and stable. The filling material usually selects polypropylene rope and other materials with good flexibility and insulation performance. After cabling, a wrapping tape is wrapped around the outer layer of the cable, and the wrapping tape is made of non-woven fabric or polyester tape, which plays a role in fixing and protecting the core wires.
4. Quality Control Process: The production process strictly follows the ISO 9001 quality management system, and a perfect quality control process has been established.
Raw material inspection: Strict inspections are carried out on purchased electrolytic copper ingots, insulation materials, filling materials, etc., including chemical composition analysis and physical performance testing. 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. For example, after conductor stranding, parameters such as conductor diameter, DC resistance, and stranding pitch are tested; after insulation extrusion, the thickness, eccentricity, and appearance quality of the insulation layer are tested; after cabling, the outer diameter and roundness of the cable are tested.
Finished product inspection: Finished cables need to pass a number of strict tests, including power frequency withstand voltage test (3kV/5min without breakdown), partial discharge test (≤5pC), insulation resistance test, weather resistance test, mechanical performance test (such as tensile strength, elongation at break) and more than 20 other tests. A certain number of samples are taken from each batch of products for testing, and only when all indicators are qualified can they leave the factory.
Quality traceability: Each batch of products is accompanied by an ISO certification report and material certificate, recording information such as product production batch, raw material source, and test results to ensure product quality traceability. If quality problems occur during use, they can be traced back to the production link in a timely manner to find out the reasons and take improvement measures.
II. General Product Information
(I) Packaging Standards
To ensure that the low-voltage power cables with pure copper strands from ISO-certified manufacturers are not damaged during transportation and storage, strict packaging standards are adopted, from the selection of packaging materials to the design of packaging methods, which are carefully considered.
1. Packaging Materials: Cables are usually wound on sturdy steel or wooden cable reels. The material of the cable reel is selected according to the weight and length of the cable. For cables with large weight and long length, steel cable reels are used, which have strong bearing capacity and can withstand the weight of the cable and the impact force during transportation; for cables with light weight and short length, wooden cable reels can be used, which not only have low cost but also are easy to handle. The diameter and width of the cable reel are determined according to the specifications and length of the cable to ensure that the cable can be neatly and tightly wound on it.
A moisture-proof and wear-resistant plastic film is wrapped around the outer layer of the cable. The plastic film has good moisture-proof performance, which can prevent the cable from being affected by moisture during transportation and storage; at the same time, it can also play a certain wear-resistant role, protecting the cable's insulation layer and conductor from scratches. For exported or long-distance transported cables, a layer of linen or woven bag is wrapped around the outer layer of the plastic film to further enhance the firmness and protective performance of the packaging.
2. Packaging Methods: The cable is neatly wound on the cable reel, and the tension is controlled during the winding process to avoid loosening or excessive stretching of the cable. Special fixing devices are used at both ends of the cable to prevent the cable from slipping off the cable reel during transportation. Sturdy baffles are installed on both sides of the cable reel, and the height of the baffles is higher than the winding height of the cable to protect the cable from external collisions.
Relevant product information is clearly marked on the sides and ends of the cable reel, including product name, model specification, conductor cross-section, insulation material type, length, weight, production batch, execution standard, production date, manufacturer's name, address, and contact information. These identification information are clearly readable, facilitating customers to quickly identify the basic information of the product when receiving and inspecting goods, and also facilitating product traceability and management.
3. Packaging Inspection: After the cable packaging is completed, quality inspectors conduct a comprehensive inspection of the packaging. Check the firmness of the cable reel to ensure that the cable reel is free from looseness, deformation, etc.; check whether the cable is neatly wound and firmly fixed; check the integrity of the packaging materials to ensure that moisture-proof and wear-resistant measures are in place; check the accuracy and clarity of the identification information to ensure that all information is correct. Only products that pass the inspection can be transported and stored.
(II) Transportation and Storage Specifications
Reasonable transportation and storage are important links to ensure the stable performance of low-voltage power cables with pure copper strands from ISO-certified manufacturers, and strict transportation and storage specifications have been formulated.
1. Transportation Requirements:
Road Transportation: Select trucks with good vehicle conditions for transportation. Before transportation, firmly fix the cable reel in the carriage, and use steel wire ropes or chains for binding to prevent the cable reel from rolling, tilting or colliding during transportation. Place buffer materials such as rubber pads and wooden boards between the cable reels to avoid mutual friction and collision. During transportation, drivers must 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, stop regularly to check the fixing of the cable reel and handle problems in a timely manner.
Railway Transportation: In accordance with the relevant regulations of railway transportation, place the cable reels reasonably in the railway freight car to ensure the stable center of gravity of the cable reels. Use special fixing devices to fix the cable reels in the carriage to prevent them from moving due to vibration during train operation. Leave a certain gap between the cable reels to avoid mutual extrusion.
Sea Transportation: For exported cables, container transportation is adopted. In the container, the cable reels are neatly arranged and fixed with steel wire ropes or fixing brackets to prevent displacement or collision during shipping. At the same time, moisture-proof measures are taken in the container, such as placing moisture-proof agents, to prevent the cables from getting damp. The container should be checked for tightness before shipping to ensure that it is rainproof and moisture-proof.
2. Storage Specifications:
Storage Environment: The warehouse for storing cables should be dry, ventilated, and clean, away from corrosive gases, strong sunlight, and heat sources. The relative humidity in the warehouse should be controlled below 70%, and the temperature should be maintained between -5℃ and 35℃. It is forbidden to store other items that may damage the cable, such as chemicals and sharp tools, in the warehouse.
Placement of Cable Reels: Cable reels should be placed vertically, and it is strictly forbidden to lay them flat to avoid deformation of the cable reel or damage to the cable due to pressure. A certain distance should be kept between the cable reels, generally not less than 0.5 meters, to facilitate ventilation and inspection. For cable reels that need to be stored for a long time, they should be rotated regularly (about once a month) to change the stress point of the cable and prevent permanent deformation of the cable.
Protection Measures: The outer packaging of the cable should be kept intact during storage. If the packaging is damaged, it should be repaired or re-packed in time to prevent moisture and dust from entering. For cables that have been stored for more than one year, before use, sampling inspection should be carried out, including insulation resistance test and appearance inspection, to ensure that the performance of the cable meets the requirements.
(III) Shipping and Delivery Process
The shipping and delivery process of low-voltage power cables with pure copper strands from ISO-certified manufacturers is strictly managed to ensure that customers receive the products in a timely and intact manner.
1. Order Confirmation: After receiving the customer's order, the sales staff will confirm the product details with the customer again, including model specification, conductor cross-section, insulation material, quantity, delivery date, and delivery address. After confirmation, a formal sales contract will be signed, clarifying the rights and obligations of both parties. The production department will arrange production according to the order requirements to ensure that the products are completed on time.
2. Preparation Before Shipping: Before shipping, the warehouse staff will retrieve the corresponding cables from the warehouse according to the order, and check the product information such as model, specification, and quantity to ensure consistency with the order. The quality inspection department will conduct a re-inspection of the outgoing products, focusing on checking the appearance of the cable and the completeness of the accompanying documents (such as test reports, certificates of conformity).
3. Logistics Arrangement: According to the customer's delivery address and requirements, the logistics department will choose the appropriate transportation method and carrier. For urgent orders, priority will be given to transportation methods with faster timeliness. The logistics department will negotiate with the carrier on transportation matters, clarify the transportation route, delivery time, and liability for loss or damage, and sign a transportation contract.
4. Shipping Notification: After the product is shipped, the sales staff will promptly notify the customer via email, phone, or other means, and provide the customer with shipping documents such as waybill number, invoice, and packing list. The customer can track the transportation status of the goods through the waybill number.
5. Delivery and Acceptance: When the goods arrive at the destination, the customer or the customer's designated receiver should inspect the goods in person. The inspection contents include: whether the outer packaging of the cable is intact, whether the product model, specification, and quantity are consistent with the order, and whether there is any damage to the cable. If any problem is found, the customer should promptly feedback to the manufacturer and take photos as evidence. If the product is in good condition, the customer should sign the delivery receipt to confirm acceptance. If there is a dispute over the quality or quantity of the product, both parties should negotiate to solve it according to the contract.
(IV) Sample Services
To help customers better understand the performance of low-voltage power cables with pure copper strands from ISO-certified manufacturers, the manufacturer provides thoughtful sample services.
1. Sample Application: Customers can apply for samples through the manufacturer's official website, email, or phone. When applying, customers need to provide basic information such as company name, contact person, contact information, and required sample specifications (including conductor cross-section and insulation material). The manufacturer will review the application and reply to the customer within 2 working days.
2. Sample Provision: For standard specification samples, the manufacturer can provide them free of charge, but the customer needs to bear the freight. The sample length is generally 1-5 meters, which is sufficient for customers to conduct performance tests and appearance inspections. For non-standard samples or samples with special requirements, the manufacturer may charge a certain sample fee, which can be deducted from the formal order payment after the customer places an order.
3. Sample Delivery: The manufacturer will deliver the samples to the customer within 3-5 working days after confirming the sample requirements. The samples are accompanied by a sample test report, which includes key performance parameters such as conductor resistance, insulation thickness, and insulation resistance, to help customers better understand the sample performance.
(V) After-Sales Service
The manufacturer attaches great importance to after-sales service and provides comprehensive after-sales support to solve customers' problems in the use of products.
1. Quality Guarantee: The product provides a quality guarantee period of 24 months from the date of delivery. During the guarantee period, if the product has quality problems due to manufacturing defects (such as insulation breakdown, conductor damage, etc.) under normal use conditions, the manufacturer will provide free replacement or repair services.
2. Technical Support: The manufacturer has a professional technical team to provide technical support to customers. Customers can consult the technical team about issues such as cable selection, installation, and maintenance through the technical hotline or email. The technical team will reply to the customer's inquiry within 24 hours and provide professional solutions. For large-scale projects, the manufacturer can send technical personnel to the site to guide the installation and commissioning.
3. Complaint Handling: If the customer has any complaints about the product or service, they can feedback to the manufacturer's after-sales department. The after-sales department will record the complaint content and conduct an investigation. A solution will be proposed to the customer within 3 working days, and the handling progress will be tracked until the problem is solved. The manufacturer will summarize and analyze customer complaints to continuously improve product quality and service level.
4. Return and Replacement Policy: If the product received by the customer is inconsistent with the order or has obvious quality problems, the customer can apply for return or replacement within 7 days after receiving the goods. The customer needs to provide relevant evidence such as photos and test reports. After the manufacturer confirms the problem, it will arrange for return and replacement in a timely manner, and bear the transportation costs incurred.
In conclusion, the low-voltage power cables with pure copper strands from ISO-certified manufacturers (insulation: PVC/PUR/XLPE optional) have excellent performance, strict quality control, and perfect supporting services, making them an ideal choice for various low-voltage power transmission scenarios.
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