Detailed Description of Cwcz-a/Cwcz-U-0.6/1kV 1×250mm² Power Cable (Compliant with BS 6387)
I. Core Information of the Product Itself
(I) Analysis of Specification Parameters
The Cwcz-a/Cwcz-U-0.6/1kV 1×250mm² power cable is meticulously designed in terms of specification parameters to meet the power transmission requirements of high-load scenarios, with each parameter reflecting its professionalism and reliability.
Voltage Level: The rated voltage of this cable is 0.6/1kV, enabling it to operate stably in medium and low-voltage power distribution systems. Among them, 0.6kV is the rated voltage between the core and the ground or the shielding layer, and 1kV is the rated voltage between cores. This design ensures that the cable can not only transmit power efficiently but also guarantee electrical safety in complex power transmission environments.
Core Structure and Cross-Section Specification: It adopts a single-core structure (1×250mm²). The single-core design reduces the impact of the skin effect when the cable transmits large currents, improving transmission efficiency. The 250mm² conductor cross-sectional area is the key to its ability to carry extremely large currents, with a rated current-carrying capacity (when laid in air) of up to 420A. This strong current-carrying capacity allows it to easily meet the power transmission needs of high-power equipment such as large industrial motors, substation outgoing lines, and high-rise building distribution trunks.
Conductor Material and Performance: The conductor is made of high-purity electrolytic copper with a purity of ≥99.95%. The high-purity copper material ensures good electrical conductivity, and its conductivity can reach more than 100% of the International Annealed Copper Standard (IACS). Through the compact stranding process, the structure of the conductor is more compact, which not only reduces the DC resistance (≤0.074Ω/km at 20℃) and the energy loss during power transmission but also enhances the mechanical strength and
Flexibility of the conductor. This process treatment makes the cable less prone to breakage during complex laying scenarios such as bending and dragging, facilitating installation by construction personnel.
Insulation Layer Parameters: The insulation layer is made of cross-linked polyethylene (XLPE) with a temperature resistance of 105℃. XLPE material has excellent electrical insulation performance, which can effectively prevent current leakage and ensure the safety of power transmission. At the same time, it also has good anti-aging ability and can operate stably in a wide temperature range of -40℃ to 90℃, without performance degradation due to drastic temperature changes, ensuring the reliability of the cable under different climatic and environmental conditions.
Sheath Layer Parameters: The sheath layer can be made of flame-retardant polyvinyl chloride (PVC) or low-smoke halogen-free materials. Flame-retardant PVC material has good flame retardancy and mechanical strength, which can prevent the spread of flames to a certain extent and protect the internal structure of the cable. Low-smoke halogen-free materials, when a fire occurs, will not release a large amount of toxic gases and smoke, reducing harm to personnel and equipment, and are more environmentally friendly and safe. The thickness of the sheath layer is accurately calculated to provide effective protection for the cable against external mechanical damage and chemical corrosion.
Armour Layer Parameters (Optional): The outer layer of the cable can be added with
Steel Tape armoring according to requirements. The thickness and material of the steel tape armor are strictly selected, which can significantly enhance the cable's resistance to mechanical impact and corrosion. The armor layer enables the cable to adapt to various laying methods such as underground, pipe 穿管，and overhead, and can maintain stable performance in different installation environments.
(II) Characteristics and Core Advantages
The Cwcz-a/Cwcz-U-0.6/1kV 1×250mm² power cable stands out among many power cable products with its unique design and excellent performance, having the following characteristics and core advantages:
1. Strict Safety Performance: As a cable compliant with the BS 6387 standard, its safety performance is fully guaranteed. It has passed the C, W, and Z-class flame retardancy tests of BS 6387. "Class C" indicates that the cable can withstand the vertical burning test of a single cable, which can effectively delay the spread of flames in the early stage of a fire; "Class W" verifies that the cable can maintain flame retardancy in water, which is of great significance for some humid environments or environments that may come into contact with water, such as subway tunnels and underground parking lots; "Class Z" ensures that the cable can maintain circuit integrity at high fire temperatures (950℃-1000℃) for at least 3 hours, buying valuable time for
Emergency Power Supply and ensuring the evacuation of personnel and the emergency operation of important equipment.
2. Excellent Electrical Performance: High-purity
Copper Conductors and high-quality insulating materials together create the excellent electrical performance of the cable. Low DC resistance reduces energy loss during power transmission and improves the efficiency of power transmission. At the same time, excellent insulation performance makes the partial discharge of the cable ≤10pC, reducing the risk of insulation breakdown and ensuring the stability and safety of power transmission.
3. Strong Environmental Adaptability: The cable can operate stably in a wide temperature range of -40℃ to 90℃, adapting to the climatic conditions of different regions. It can work normally both in cold northern regions and hot southern regions. In addition, the optional steel tape armoring enhances the cable's resistance to mechanical impact and corrosion, enabling it to be used in various complex environments such as underground, pipe 穿管，and overhead, expanding its application range.
4. Good Mechanical Performance: The conductor processed by the compact stranding process, as well as high-quality sheath and armor materials, make the cable have good mechanical strength and flexibility. During laying, it can withstand a certain amount of tension, bending, and extrusion, and is not easy to be damaged. This good mechanical performance reduces construction difficulty, improves construction efficiency, and also extends the service life of the cable.
(III) Characteristic Uses and Application Scenarios
With its excellent performance, the Cwcz-a/Cwcz-U-0.6/1kV 1×250mm² power cable is widely used in many fields, especially suitable for places with high requirements for fire safety and reliability of power transmission:
1. Subway Systems: The environment in subway tunnels is complex, with high requirements for the flame retardancy, water resistance, and vibration resistance of cables. The W-class flame retardancy of Cwcz-a/Cwcz-U cables ensures that in the event of a fire in the tunnel, the cable will not burn easily and can maintain flame retardancy in water. Its armored design can resist the vibration and mechanical impact caused by train operation, ensuring the stable operation of emergency power supply lines and providing a strong guarantee for the safe operation of the subway.
2. Airport Facilities: Airports are places with dense personnel and numerous electrical equipment, with extremely high requirements for the reliability and safety of power supply. This cable can be used for the distribution trunk lines of airports. Its high current-carrying capacity can meet the power needs of a large number of equipment, and the low-smoke halogen-free sheath can reduce the release of toxic gases in the event of a fire, ensuring the safety of personnel's lives. At the same time, the wide temperature adaptability of the cable enables it to work normally in different areas of the airport, such as terminal buildings and around runways.
3. Data Centers: Data centers carry massive data storage and processing tasks, and a power outage will cause huge losses. The high current-carrying capacity and low loss characteristics of Cwcz-a/Cwcz-U cables can ensure the continuous and stable operation of the main distribution lines, ensuring the normal operation of servers and other equipment. Its excellent flame retardancy and low-smoke halogen-free characteristics also provide important guarantees for the fire safety of data centers, which can minimize equipment damage and data loss in case of fire.
4. Large Shopping Malls: Large shopping malls have dense personnel and numerous electrical equipment, including lighting, air conditioning, elevators, various amusement facilities, etc., which have large power demand. This cable can provide stable power transmission for the mall's power distribution system, and its flame retardancy can delay the spread of fire in the event of a fire, buying time for personnel evacuation and fire fighting work. In addition, the mechanical performance of the cable enables it to adapt to the complex laying environment of the mall.
5. Industrial Factories: In large industrial factories, such as steel plants and chemical plants, there are a large number of large industrial motors and high-power equipment, which have huge power demand. The high current-carrying capacity of Cwcz-a/Cwcz-U cables can meet the power transmission needs of these equipment, and their resistance to mechanical impact and corrosion can adapt to the harsh environmental conditions in the factory area, ensuring the continuous production.
(IV) Production Process and Quality Control
The excellent performance of the Cwcz-a/Cwcz-U-0.6/1kV 1×250mm² power cable benefits from advanced production processes and strict quality control processes, with every link from the selection of raw materials to the inspection of finished products being 精益求精.
1. Conductor Manufacturing Process: High-purity electrolytic copper rods are selected as raw materials and processed into single wires through a continuous extrusion machine. During the single wire processing, the diameter and tolerance of the single wire are strictly controlled to ensure uniform quality of the single wire. Then, the compact stranding process is used to strand the single wires into a conductor. By precisely controlling the stranding pitch and pressure, the structure of the conductor is compact, the filling coefficient of the conductor is improved, and the DC resistance is reduced. The
Stranded Conductor also needs to be annealed to eliminate the stress generated during processing and improve the flexibility and conductivity of the conductor.
2. Insulation Layer Extrusion Process: Three-layer co-extrusion equipment is used for the extrusion of the insulation layer, that is, the conductor shielding layer, insulation layer, and insulation shielding layer are extruded at the same time. This process can ensure that the layers are tightly combined, reduce interface defects, and improve insulation performance. During the extrusion process, parameters such as extrusion temperature, speed, and pressure are strictly controlled to ensure that the thickness of the insulation layer is uniform and the deviation does not exceed the specified range. The insulation layer material is high-quality XLPE. After extrusion, it undergoes a cross-linking reaction through a cross-linking tube. By precisely controlling the cross-linking temperature, pressure, and time, the cross-linking degree of the XLPE material meets the requirement (≥75%) to ensure the temperature resistance and mechanical properties of the insulation layer.
3. Sheath Layer Extrusion Process: Select appropriate sheath materials (flame-retardant PVC or low-smoke halogen-free materials) according to customer needs. Before extrusion, the materials are dried to remove moisture in the materials to avoid defects such as bubbles during extrusion. Advanced extrusion equipment is used to coat the sheath material on the insulation layer or armor layer, and the extrusion parameters are controlled to ensure that the thickness of the sheath layer is uniform, the surface is smooth, and there are no cracks, bubbles, or other defects.
4. Armoring Process (if selected): For cables that need to be added with steel tape armoring, a fully automatic armoring machine is used for armoring. During the armoring process, the tension and winding pitch of the steel tape are strictly controlled to ensure that the armor layer is closely attached to the outer sheath layer without loosening, wrinkling, or other phenomena. After armoring is completed, the armor layer is subjected to anti-corrosion treatment to improve its corrosion resistance.
5. Quality Control Process: A sound quality control system is established during the production process. Raw materials are strictly inspected, and only raw materials that meet the requirements can be put into production. After each production process is completed, corresponding inspections are carried out, such as the diameter of the conductor, DC resistance, thickness of the insulation layer, eccentricity, thickness of the sheath layer, appearance, etc. Finished cables need to undergo a number of rigorous tests, including power frequency withstand voltage test (3kV/5min without breakdown), partial discharge test (≤10pC), flame retardancy test, mechanical performance test, etc. Each batch of products is accompanied by a detailed test report to ensure that the products meet the BS 6387 standard and relevant international safety specifications.
II. General Product Information
(I) Packaging Standards
To ensure that the Cwcz-a/Cwcz-U-0.6/1kV 1×250mm² power cable is not damaged during transportation and storage, strict packaging standards are adopted:
1. Cable Reels: Cables are usually wound on sturdy wooden or steel reels. The size of the reel is designed according to the length and diameter of the cable to ensure that the cable can be neatly wound on it, avoiding loosening or mutual friction during transportation. Both sides of the reel are provided with flanges, and the thickness and strength of the flanges are calculated to withstand the weight of the cable and the impact force during transportation, preventing the reel from deformation.
2. Fixing and Protection: After the cable is wound on the reel, high-strength steel tapes or ropes are used to fix the cable on the reel to prevent the cable from sliding during transportation. The outer layer of the cable is wrapped with a moisture-proof and wear-resistant material, such as plastic film or linen, to protect the sheath layer of the cable from damage. For cables with armor layers, protective covers are added at both ends of the reel to prevent the armor layer from being hit.
3. Identification Information: Clear identifications are set on the sides and ends of the reel, including product name, model specification (Cwcz-a/Cwcz-U-0.6/1kV 1×250mm²), length, weight, production batch number, execution standard (BS 6387), production date, manufacturer information, etc. These identification information help customers quickly identify the relevant information of the product when receiving and inspecting the goods.
4. Export Packaging: For exported cables, their packaging also needs to meet the relevant standards and requirements of the destination country or region. Fumigated wooden reels may be used to prevent the spread of pests and diseases. At the same time, the identification on the packaging will be added with corresponding languages such as English to ensure that foreign customers can accurately understand the product information.
(II) Transportation and Storage Specifications
1. Transportation Requirements:
Road Transportation: Use special transport vehicles, such as flatbed trucks or vans. When loading cable reels, ensure that the reels are placed stably and fixed on the vehicle with steel wire ropes or chains to prevent rolling or tilting during transportation. During transportation, abide by traffic rules, avoid sudden braking, sharp turns, and other operations to reduce the impact on the cable.
Railway Transportation: Select appropriate railway freight cars, place the cable reels reasonably, ensure that there is sufficient gap between the reels to avoid mutual collision. At the same time, take good fixing measures to prevent the reels from moving during train operation.
Sea Transportation: For cables transported by sea, place the reels in containers and take moisture-proof and rust-proof measures. In the container, the reels should be fixed firmly to avoid damage due to 颠簸 during ship navigation.
2. Storage Conditions:
Storage Site: A dry, ventilated, cool warehouse without corrosive gases and dust should be selected. The ground of the warehouse should be flat and solid to prevent the cable reels from getting damp or being squeezed.
Storage Method: Cable reels should be stored vertically, avoiding flat storage to prevent reel deformation or cable extrusion. A certain distance should be maintained between reels for ventilation and handling. For cables stored for a long time, regular inspections and turning are required to prevent the cables from deformation due to long-term standing.
Time Limit Requirements: The storage period of the cable generally does not exceed 2 years. Cables that exceed the storage period need to be re-inspected before use, such as insulation resistance test and appearance inspection, to ensure that their performance meets the requirements before use.
(III) Shipping and Delivery Process
1. Order Processing: After the customer places an order, the sales staff will promptly confirm with the customer the product model specification, quantity, delivery date, delivery location, and other information. Technical personnel will provide relevant technical support according to the customer's needs, such as cable laying suggestions and selection of supporting equipment. After the order is confirmed, the production department will arrange the production plan to ensure on-time delivery.
2. Stock Preparation and Inspection: Before shipment, warehouse management personnel will prepare goods according to the order information, re-inspect the model specification, length, appearance, etc. of the cable to ensure that the goods are consistent with the order and the quality meets the requirements. At the same time, prepare relevant documents such as product test reports and certificates of conformity.
3. Logistics Arrangement: Select an appropriate logistics method according to the customer's delivery location and requirements. For domestic customers, road transportation or railway transportation is usually used; for foreign customers, sea transportation or air transportation is used. Sign a transportation contract with the logistics company to clarify the responsibilities and obligations of both parties to ensure that the goods can be delivered safely and on time.
4. Shipping Notification: After the goods are shipped, promptly notify the customer of the shipping information, including the logistics tracking number, transportation method, estimated arrival time, etc. Customers can query the transportation status of the goods through the logistics tracking number.
5. Delivery and Acceptance: After the goods arrive at the customer's designated location, the customer needs to conduct on-site acceptance. The acceptance content includes the quantity of goods, model specification, whether the packaging is intact, whether the appearance of the cable is damaged, etc. If problems are found, the customer should contact us in a timely manner, and we will handle them according to the situation, such as reissuing, returning, or exchanging goods. After the acceptance is passed, the customer signs on the delivery note to complete the delivery process.
(IV) Sample Services
To help customers better understand the performance and quality of the Cwcz-a/Cwcz-U-0.6/1kV 1×250mm² power cable, the following sample services are provided:
1. Sample Provision: Customers can apply to us for samples, and we will provide samples of corresponding lengths (usually 1-5 meters) according to the customer's needs. The model and specification of the samples are consistent with the bulk products to ensure that customers can accurately understand the performance of the products.
2. Sample Fees: For customers applying for samples for the first time, we may provide samples free of charge, but customers need to bear the transportation cost of the samples. For customers who apply for samples multiple times or need samples of special specifications, a certain sample fee may be charged, and the specific fee can be negotiated with the sales staff.
3. Sample Testing: If customers need to test the samples, we can provide relevant testing standards and methods, or assist customers in sending the samples to professional testing institutions for testing. The testing fee shall be borne by the customer.
4. Sample Delivery: Samples are usually delivered to customers by express. We will inform customers of the express tracking number in a timely manner after the samples are sent, so that customers can query the transportation status of the samples.
(V) After-Sales Service
We are committed to providing customers with high-quality after-sales service to ensure that customers can receive timely support and help in the process of using the Cwcz-a/Cwcz-U-0.6/1kV 1×250mm² power cable:
1. Quality Assurance: The product warranty period is 2 years, calculated from the date of acceptance of the product. During the warranty period, if the product has quality problems caused by non-human factors, we will provide free repair or replacement services for customers.
2. Technical Support: Provide customers with professional technical support, including consultation and guidance on cable laying, installation, maintenance, etc. Technical problems can be solved for customers through telephone, email, on-site service and other ways.
3. Fault Handling: If the cable fails during use, customers can contact our after-sales service department. Our technical personnel will respond quickly, analyze the cause of the fault through telephone or on-site inspection, and put forward solutions. For faults that need to be repaired or replaced, we will arrange relevant personnel to handle them in a timely manner to minimize the impact on the customer's production and operation.
4. Complaint Handling: We have set up a special complaint handling channel. If customers have any complaints about products or services, they can feedback to us through the complaint hotline or email. We will handle the complaint within 24 hours of receiving it, communicate with the customer in a timely manner, and give a satisfactory solution.
5. Regular Follow-Up: After the product is delivered and used, we will conduct regular follow-up visits to customers to understand the use of the cable, collect customer opinions and suggestions, and provide relevant maintenance guidance and technical updates to help customers better use the product.
III. Summary
The Cwcz-a/Cwcz-U-0.6/1kV 1×250mm² power cable, compliant with the BS 6387 standard, is a high-performance power
Transmission Cable that integrates excellent electrical performance, strict safety performance, strong environmental adaptability and good mechanical performance. Its reasonable specification parameters, advanced production process and strict quality control ensure its reliability and stability in various high-load and high-safety scenarios.
In terms of product itself, from the detailed design of specification parameters to the unique characteristics and advantages, from the wide range of application scenarios to the sophisticated production process and quality control, every aspect reflects the professionalism and excellence of the product. In terms of general product information, the strict packaging standards, scientific transportation and storage specifications, smooth shipping and delivery process, thoughtful sample services and comprehensive after-sales service system provide customers with a full range of support and guarantee.
Whether in subway systems, airport facilities, data centers, large shopping malls or industrial factories, the Cwcz-a/Cwcz-U-0.6/1kV 1×250mm² power cable can play an important role, providing a reliable power transmission solution for customers' production and operation. Choosing this cable is choosing safety, efficiency and stability. We will continue to be committed to improving product quality and service level, providing better products and services for customers.
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