I. From the Perspective of the Product Itself
(1) Specification Parameters
The three armoured
Copper Core cables Zc-Yjv22, Zr-Yjv22, and Wdzn-Yjy22 have many commonalities in specification parameters, while also having their own characteristics.
In terms of conductor specifications, all three use high-purity
Copper Conductors with a purity of over 99.9%. Common conductor specifications include
Multi-Core designs such as 4×120+1×70mm² and 4×240+1×120mm². Taking 4×240+1×120mm² as an example, "4×240" indicates 4 main cores with a cross-sectional area of 240mm², and "1×120" is 1 neutral core with a cross-sectional area of 120mm². This structure can well meet the needs of power transmission and circuit balance in different scenarios.
In terms of conductivity, the
Copper Conductors of the three cables all have a conductivity of ≥58MS/m. This excellent conductivity can ensure extremely low losses during power transmission, and can well adapt to medium and high-voltage power systems, providing a strong guarantee for efficient power transmission.
The insulation layer parameters are excellent. The XLPE (cross-linked polyethylene) used, after warm water cross-linking treatment, has a temperature resistance range extended to -40℃ to 90℃, and can maintain stable insulation performance in extreme temperature environments. Its insulation resistance is ≥1000MΩ·km, and the breakdown field strength is ≥20kV/mm, which can effectively resist the impact of harsh environments such as humidity and high temperature, ensuring the safety of power transmission.
The specification parameters of the
Steel Tape armouring layer (Sta) are also considerable. It adopts a hot-dip galvanizing process, with a thickness of ≥0.3mm and a compressive strength of ≥200MPa. This enables the cable to have strong resistance to mechanical impact and rolling, and can adapt to complex laying environments such as direct burial and pipe penetration, greatly extending the service life of the cable.
In terms of current-carrying capacity, the current-carrying capacity of the three cables increases with the specification. The 4×240mm² model has a current-carrying capacity of 400-500A, which is sufficient to meet the power supply needs of high-power scenarios such as large industrial equipment and urban power grid main lines.
In terms of laying parameters, the minimum bending radius allowed by the steel tape armouring is 12 times the outer diameter of the cable. This feature allows the cable to be installed smoothly in narrow spaces, improving the
Flexibility of construction.
Cables of different models have different focuses on protection parameters. Zc-Yjv22 passes the GB/T 18380 bundle combustion test, with a flame spread length of ≤1.5m and no drips igniting filter paper, having good flame-retardant properties. Zr-Yjv22 has an enhanced flame-retardant performance with a flame-retardant grade of Class C, which can effectively delay the spread of fire in the early stage of a fire. Wdzn-Yjy22 uses a low-smoke halogen-free sheath, with a smoke density of ≤50% when burning and a halogen acid gas release of ≤0.5mg/g, complying with the GB/T 19666 standard, which can significantly reduce the fire risk in enclosed spaces.
(2) Characteristic Uses
The three cables Zc-Yjv22, Zr-Yjv22, and Wdzn-Yjy22 play important roles in different scenarios with their unique performances.
Zc-Yjv22 has good flame-retardant properties and is suitable for crowded places such as shopping malls and office buildings. In shopping malls, various shops and entertainment facilities are concentrated, and there is a large flow of people. Once a fire breaks out, the consequences will be unimaginable. However, Zc-Yjv22 passes the GB/T 18380 bundle combustion test, with a short flame spread length and no drips igniting filter paper. It can delay the spread of fire when a fire occurs, buying valuable time for personnel evacuation and fire rescue, making it an ideal choice for the distribution main lines of commercial complexes.
Zr-Yjv22 has enhanced flame-retardant performance with a flame-retardant grade of Class C, and is mostly used in key facilities such as hospitals and data centers. As a place for treating patients, hospitals, especially ICU wards, have extremely high requirements for uninterrupted power supply. Data centers store a large amount of important data, and power outages may cause huge losses. Zr-Yjv22 can effectively delay the spread of fire in the early stage of a fire, buying time for the start-up and switching of the
Emergency Power Supply system, ensuring the normal operation of key facilities.
Wdzn-Yjy22 uses a low-smoke halogen-free sheath, which produces little smoke and low halogen acid gas release when burning, and is very suitable for enclosed spaces such as subways and tunnels. The space in subways and tunnels is enclosed. Once a fire breaks out, smoke and toxic gases are difficult to diffuse, which will pose a serious threat to people's lives. Wdzn-Yjy22 produces little smoke when burning and does not release a large amount of toxic halogen acid gases, which can reduce the risk of suffocation and corrosion during fires, so it has become the main cable in subway tunnel sections.
In addition, with their excellent conductivity, mechanical strength and protective properties, the three cables are also widely used in other scenarios with high requirements for safety and weather resistance. For example, the power transmission main lines in large industrial parks can withstand the high-power power demand and the impact of complex industrial environments during the operation of industrial equipment; the main lines of urban power grids provide stable support for the normal power supply of the city.
(3) Material and Style
Material
The core materials of the three cables have their own characteristics, which together ensure the excellent performance of the cables.
The conductor is made of high-purity copper with a purity of over 99.9%. High-purity copper has excellent conductivity, which can ensure low loss during power transmission. At the same time, copper has good ductility and toughness, which is convenient for processing into cores of different specifications, and is not easy to break during laying, being able to adapt to various complex installation environments.
The insulation layer is made of XLPE (cross-linked polyethylene). After warm water cross-linking treatment, its molecular structure forms a three-dimensional network structure, which greatly improves heat resistance, mechanical strength and insulation performance. This material can remain stable in the temperature range of -40℃ to 90℃, effectively resisting the erosion of harsh environments such as humidity and high temperature, providing reliable insulation protection for power transmission.
The steel tape armouring layer (Sta) uses steel treated by hot-dip galvanizing process. The galvanized layer can effectively prevent the steel from rusting, improving the corrosion resistance of the armouring layer. The steel itself has the characteristics of high strength. The armouring layer formed after processing has a thickness of ≥0.3mm and a compressive strength of ≥200MPa, providing strong mechanical protection for the cable, enabling it to withstand external impacts and rolling.
The sheath material varies with models. Zc-Yjv22 and Zr-Yjv22 use
PVC Sheaths. PVC has good chemical corrosion resistance, wear resistance and certain flame retardancy, which can play a good protective role in the internal structure of the cable. Wdzn-Yjy22 uses a low-smoke halogen-free sheath. This material does not release a large amount of toxic gases and smoke when burning, meeting environmental protection and safety requirements, and is especially suitable for enclosed spaces.
Style
The three cables have many similarities in style, and also have slight differences due to functional requirements.
Overall, all three are multi-core structures, composed of multiple main cores and one neutral core twisted together, with an insulation layer, a steel tape armouring layer and a sheath layer wrapped around them in sequence, presenting a cylindrical long strip shape. This structural design makes the cable have good flexibility and integrity, facilitating transportation, laying and installation.
In terms of color, Zc-Yjv22 and Zr-Yjv22 with PVC sheaths are usually black. Black has good weather resistance, which can reduce the aging effect of direct sunlight on the sheath, and is suitable for various environments such as outdoors and underground. The low-smoke halogen-free sheath of Wdzn-Yjy22 has various colors, commonly including gray, white, etc., which can be selected according to different use scenarios and customer needs.
The surface of the cable is usually printed with clear marks, including model, specification, voltage level, manufacturer, production date and other information. These marks not only facilitate users to identify and check the basic information of the cable, but also help in management and traceability during construction and maintenance.
(4) Production Process
The production process of Zc-Yjv22, Zr-Yjv22, and Wdzn-Yjy22 cables is rigorous and complex, ensuring high quality of the products.
Conductor Production: First, high-purity copper raw materials are selected, and impurities are removed through smelting to improve the purity of copper. Then, the copper liquid is made into copper rods through a continuous casting process, and then the copper rods are drawn into Copper Wires of the required diameter through wire drawing equipment. Finally, multiple copper wires are twisted together according to a certain twisting method to form conductors of different specifications. The twisting process can enhance the flexibility and mechanical strength of the conductor, facilitating subsequent processing and laying.
Insulation Layer Extrusion: The produced conductor is cleaned and dried to remove oil and impurities on the surface. Subsequently, an extrusion process is used to wrap a layer of XLPE Insulation Material around the conductor. During the extrusion process, it is necessary to accurately control the temperature, pressure and speed of the extruder to ensure that the insulation layer has uniform thickness, smooth surface, and is closely combined with the conductor. After extrusion, the insulation layer is subjected to warm water cross-linking treatment. The cable is put into warm water, and under specific temperature and pressure conditions, the XLPE molecules undergo a cross-linking reaction to form a three-dimensional network structure, thereby improving the performance of the insulation layer.
Cabling: Multiple cores wrapped with insulation layers (including main cores and neutral cores) are twisted according to a certain lay length to form a cable core. During the twisting process, in order to ensure the roundness and structural stability of the cable, some insulation materials, such as polypropylene ropes, are filled in the gaps of the cable core.
Steel Tape Armouring: Steel tape armouring is applied to the outside of the cabled core. The steel tape treated by hot-dip galvanizing process is wrapped around the cable core by an armouring machine to form a steel tape armouring layer. During the wrapping process, it is necessary to control the tension and overlap of the steel tape to ensure the tightness and uniformity of the armouring layer, so as to provide effective mechanical protection.
Sheath Extrusion: According to different models, corresponding sheath materials (PVC or low-smoke halogen-free materials) are selected for sheath extrusion. The sheath material is added to the extruder, heated and melted, and then extruded through a die to the outside of the armouring layer to form a sheath. During the extrusion process, parameters such as temperature and pressure should be controlled to ensure that the sheath has uniform thickness, flat surface, and is closely combined with the armouring layer. For the low-smoke halogen-free sheath of Wdzn-Yjy22, the material needs to be fully dried before extrusion to avoid defects such as bubbles in the sheath.
Finished Product Inspection: The produced cables need to undergo strict inspection. Inspection items include the DC resistance of the conductor, the insulation resistance and breakdown field strength of the insulation layer, the thickness and compressive strength of the steel tape armouring layer, the thickness and mechanical properties of the sheath, as well as the flame-retardant performance and low-smoke halogen-free performance of the cable. Only cables that pass all inspection items can leave the factory for sale.
II. From the Perspective of General Product Information
(1) Packaging
To ensure that Zc-Yjv22, Zr-Yjv22, and Wdzn-Yjy22 armoured
Copper Core Cables are not damaged during transportation and storage, their packaging methods are carefully designed.
Cable reels are usually used for packaging, and there are two types of cable reels: wooden and iron. For short-distance transportation or small batches of cables, wooden cable reels are more suitable. They are light in weight and low in cost, but their load-bearing capacity is relatively weak. For long-distance transportation or large batches of cables, iron cable reels are preferred. Iron cable reels have high strength and large load-bearing capacity, and can better protect the cables from extrusion and collision.
When packaging, the cable is neatly wound on the cable reel to avoid twisting and knotting, preventing damage to the insulation layer, armouring layer and sheath layer of the cable. After winding, a layer of plastic film is wrapped around the outer layer of the cable. The plastic film has good moisture-proof and dust-proof performance, which can protect the surface of the cable from pollution. For cables that need to be stored for a long time, a layer of linen or canvas is wrapped around the outer layer of the plastic film to further enhance the protective effect, preventing the cable from direct sunlight, rain soaking and mechanical damage.
A detailed label is fixed on the side of the cable reel, which indicates the model, specification, length, voltage level, manufacturer, production date, implementation standard and other information of the cable, facilitating customers' identification and verification during receipt and storage.
(2) Transportation
The transportation of cables needs to strictly follow relevant regulations to ensure their quality and safety.
The choice of transportation mode depends on the transportation distance and quantity. Short-distance transportation generally uses truck transportation. Truck transportation has high flexibility and can directly deliver the cables to the destination, suitable for small batches and emergency transportation needs. For long-distance transportation, railway transportation or waterway transportation can be chosen. Railway transportation has large capacity, fast speed and good stability, suitable for long-distance transportation of large quantities of cables; waterway transportation has low cost, suitable for transporting large and heavy cables, but the transportation time is relatively long.
During transportation, special attention should be paid to protecting the cables. When loading cables, the cable reels need to be placed stably on the transport tool, and firmly fixed with ropes, chains and other fixing devices to prevent rolling, tilting or collision during transportation. For exposed parts of the cable, covering protection should be taken to avoid direct sunlight, rain soaking and dust pollution.
During transportation, traffic rules should be observed, transportation routes and time should be reasonably arranged, avoiding severe weather and traffic jam sections, to ensure that the cables can be delivered to the destination on time and safely. At the same time, transport personnel should regularly check the fixing of the cables and the integrity of the packaging, and deal with problems in a timely manner.
(3) Delivery
The delivery process of Zc-Yjv22, Zr-Yjv22, and Wdzn-Yjy22 armoured
Copper Core Cables is standardized and orderly to ensure that customers receive qualified products in a timely manner.
After a customer places an order, the sales staff will timely confirm the order information with the customer, including the model, specification, quantity, delivery date, delivery location of the cable, etc., to ensure that the information is accurate. After confirmation, notify the warehouse department to prepare the goods.
Warehouse staff retrieve the corresponding cables from the inventory according to the order requirements, conduct a preliminary inspection on the appearance and labels of the cables, and check whether the quantity and specifications are consistent with the order. Subsequently, quality inspectors will conduct sampling inspections on the cables to be shipped, mainly checking key indicators such as electrical performance and mechanical performance of the cables to ensure that the product quality meets relevant standards and customer requirements.
After passing the inspection, the cables are packaged, wound on the cable reels according to the specified packaging method, and protective measures are taken. The customer name, order number, product model, specification, quantity and other information are marked on the package for the customer to check when receiving the goods.
After that, contact the logistics company to arrange for transport vehicles to pick up the goods. Warehouse staff and logistics company staff jointly check the quantity and specifications of the cables, go through the handover procedures, and sign a transportation contract to clarify the rights and obligations of both parties.
After delivery, the sales staff will promptly notify the customer of the delivery information, including the logistics company name, transport order number, estimated arrival time, etc., to facilitate the customer to track the transportation status of the goods. At the same time, the sales staff will maintain communication with the customer and deal with any problems that may occur during transportation in a timely manner.
(4) Samples
To allow customers to better understand the performance and quality of Zc-Yjv22, Zr-Yjv22, and Wdzn-Yjy22 armoured copper core cables, the enterprise provides sample services.
Customers can apply for samples from the enterprise by phone, email, online platform, etc., indicating the model, specification, quantity and other information of the required samples. After receiving the application, the enterprise's sales staff will contact the customer within 24 hours to confirm the sample details, delivery address, sample fees and other matters.
Samples are produced in strict accordance with the production process and quality standards of formal products to ensure that the performance and quality of the samples are consistent with bulk products. After the samples are produced, they are strictly inspected by the quality inspection department and can be sent out only after passing the inspection.
Samples are usually packaged in small cable reels or reels, with labels indicating the model, specification, production batch number and other information of the samples. Then they are sent to customers by express, and the sales staff will inform the customer of the express tracking number to facilitate the customer to check the delivery progress of the samples.
Sample fees are generally borne by the customer, including the production cost and transportation cost of the samples. If the customer subsequently signs a bulk order, the enterprise may appropriately reduce or waive the sample fee based on the order volume, which can be negotiated with the sales staff.
(5) After-sales Service
The enterprise provides comprehensive after-sales service for Zc-Yjv22, Zr-Yjv22, and Wdzn-Yjy22 armoured copper core cables to safeguard customers' rights and interests.
Quality Guarantee: The enterprise guarantees that all cables sold meet relevant national standards and industry specifications, with a warranty period of 18 months from the date of delivery. During the warranty period, if the cable fails to function normally due to inherent quality defects (such as conductor oxidation, insulation layer breakdown without external damage, or armouring layer detachment), the enterprise will provide free repair or replacement services. For severe quality issues that affect safe operation, a full refund or replacement with upgraded products will be offered.
Technical Support: A dedicated technical team is available to provide professional guidance throughout the cable's lifecycle. Customers can consult via hotline, email, or online platforms regarding installation specifications (such as recommended burial depth for direct burial, spacing from other pipelines), maintenance procedures (like insulation resistance testing methods), and troubleshooting (e.g., handling abnormal heating). For large-scale projects, the enterprise can dispatch technicians to the site for on-site guidance during installation and commissioning, ensuring compliance with design requirements.
Fault Handling: In case of cable faults during use, customers can report the issue through the after-sales hotline. The enterprise will respond within 2 hours to record fault details (such as fault location, 现象，and operating environment). For urgent scenarios like power outages in hospitals or data centers, a emergency repair team will be dispatched within 4 hours (for local areas) or 24 hours (for remote areas) to conduct on-site inspections using professional equipment (such as cable fault locators). After identifying the cause, repair solutions will be proposed, and repairs will be completed as soon as possible to minimize downtime losses.
Customer Feedback and Improvement: The enterprise has established a customer feedback mechanism to collect opinions on product quality, service efficiency, and delivery timeliness through regular follow-up calls, online questionnaires, and on-site visits. Feedback is categorized and analyzed by a dedicated department, with improvement measures formulated within 7 days. For example, if customers report issues with sheath wear resistance, the R&D team will optimize the sheath material formula; if delivery delays occur frequently, the logistics management process will be adjusted to enhance scheduling efficiency.
Return and Exchange Policy: If the received cables have obvious quality defects (such as uneven insulation thickness, damaged armouring, or inconsistent specifications with the order) or packaging damage affecting product performance, customers can apply for return or exchange within 10 days of receipt. The enterprise will arrange for staff to inspect the goods, and upon confirmation, bear all transportation costs for return and exchange. For non-quality-related returns (such as over-purchasing), customers need to ensure the cables are unused, with intact packaging and labels, and bear the round-trip transportation costs.
English
Español
Portugues
Pусский
Français
العربية
ไทย
Indonesia
Tiếng Việt
Telefon
Posta