I. Product-Related Information
(I) Specification Parameters
The two-
Core Copper conductor cross-linked polyethylene (XLPE) insulated
Power Cables involved this time include three models: YJV, R2V, and RO2V, as well as four conductor cross-sectional specifications: 2×4mm², 2×10mm², 2×16mm², and 2×25mm².
In terms of conductor cross-sectional specifications, these four specifications all have a two-core structure. 2×4mm² means that the cable consists of
2 Cores with a cross-sectional area of 4mm²; 2×10mm² is 2 cores of 10mm²; 2×16mm² is 2 cores of 16mm²; 2×25mm² is 2 cores of 25mm². The cross-sectional area of the core is a key factor determining the current-carrying capacity of the cable. The larger the cross-sectional area, the greater the current-carrying capacity.
The current-carrying capacity of a 4mm² cable is usually around 16-25A, which can meet the power supply needs of small household appliances and weak current equipment. These devices have relatively low power and low requirements for power transmission. The current-carrying capacity of a 10mm² cable is generally 30-50A, which can handle loads such as household air conditioners, small and medium-sized electric tools, etc. These devices have relatively high power, and a 10mm² cable can ensure their normal operation and avoid problems such as heating due to insufficient current-carrying capacity of the cable. The current-carrying capacity of a 16mm² cable can reach 40-70A, which is suitable for small industrial motors, commercial lighting systems, etc., and can meet their power needs for continuous operation. The current-carrying capacity of a 25mm² cable is about 60-100A, which is suitable for medium-sized industrial equipment and branch power transmission in large commercial places, and can provide sufficient power for high-power equipment.
The rated voltage of these three models of cables is usually 0.6/1kV, which meets the standards of low-voltage power transmission, can be compatible with most low-voltage electrical equipment and power distribution systems, and ensures the safety and stability of power transmission.
(II) Characteristic Uses
Based on different specification parameters and performance characteristics, these two-core copper conductor
XLPE Insulated Power Cables have targeted applications in multiple fields.
In household electricity scenarios, 4mm² cables can be used to connect small household appliances such as table lamps, TVs, refrigerators, as well as weak current equipment such as routers and switches. Their current-carrying capacity can meet the daily electricity needs of these devices, and their wire diameter is relatively small, which is convenient for concealed laying indoors. 10mm² cables are suitable for powering household air conditioners, electric water heaters, small and medium-sized electric tools, etc. These devices have relatively high power, and 10mm² cables can ensure their normal operation and avoid problems such as heating due to insufficient current-carrying capacity of the cable.
In the industrial field, 16mm² cables can be used for power supply of small industrial motors, assembly line auxiliary equipment, and commercial lighting systems. Small industrial motors have high requirements for power stability during operation, and 16mm² cables can provide stable power transmission to ensure the normal operation of the motors; commercial lighting systems usually include a large number of lighting fixtures, and 16mm² cables can meet their centralized power supply needs. 25mm² cables are suitable for medium-sized industrial equipment, such as medium-sized compressors, medium-sized pump equipment, etc., as well as branch power transmission in large commercial places, such as floor power distribution in large shopping malls and power supply for refrigeration equipment in supermarkets, and can cope with large power loads.
Due to their excellent electrical performance and aging resistance, YJV cables are widely used in places with high requirements for cable performance, such as power supply for medical equipment in hospitals and auxiliary power distribution in data centers. These places have extremely high requirements for the stability and safety of power supply, and YJV cables can effectively reduce the probability of failures.
R2V Cables are suitable for ordinary industrial and civil scenarios, such as power distribution in ordinary residences and equipment wiring in small factories. Their performance can meet general power transmission needs, and their price is relatively affordable, with outstanding cost performance.
RO2V Cables may have weather-resistant components added to their sheaths, so they have strong UV resistance and high and low temperature resistance, making them more suitable for outdoor laying scenarios. For example, power supply for outdoor billboards, wiring for road lighting systems, power supply for park landscape lights, etc., can maintain stable performance in complex outdoor environments such as wind, sun, rain, etc.
(III) Material and Style
In terms of materials, these three models of cables have the same core materials, but there are also certain differences to adapt to different usage needs.
They all use copper as the conductor. Copper is an excellent conductive material with extremely high conductivity, which can transmit power efficiently and reduce energy loss during power transmission. At the same time, copper has good ductility and toughness, which is convenient for drawing, stranding and other processing during cable production; during laying, it can adapt to certain bending and stretching and is not easy to break.
The insulation layer is made of cross-linked polyethylene (XLPE) material. XLPE forms a network molecular structure through special processing, which makes XLPE have excellent insulation performance, can isolate current effectively, and prevent leakage and short circuit. In addition, XLPE has good temperature resistance, will not soften in high-temperature environments, can maintain a stable insulation effect, and also has strong aging resistance, with a long service life, which can reduce the frequency of cable replacement.
In terms of sheath materials, different models of cables are different. The sheath of YJV cables is polyvinyl chloride (PVC). The
PVC Sheath has good mechanical properties, impact resistance and wear resistance, and can effectively protect the inner cores and insulation layers of the cable. At the same time, the PVC sheath also has a certain degree of chemical corrosion resistance and can adapt to some environments with mild chemical pollution.
The sheath of R2V cables may also be polyvinyl chloride, but its formula may be simpler to control costs, making it have a price advantage in ordinary scenarios.
In addition to polyvinyl chloride, the sheath of RO2V cables may also be added with weather-resistant components such as UV absorbers and antioxidants to enhance their weather resistance in outdoor environments and improve the service life of the cables outdoors.
In terms of style, these cables all have a two-core circular structure. The circular structure has low resistance during laying, which is more convenient and fast for both pipe laying and direct burial laying. The two-core structure is compact and takes up little space, which is convenient for laying in narrow spaces, such as pipe 穿设 in walls and wiring inside equipment. The appearance color of the cable is usually dark colors such as black or gray. This color is not easy to get dirty and can absorb heat to a certain extent, reducing the impact of external temperature on the cable. The outer diameter of the cable varies according to the cross-sectional specification. The outer diameter of a 4mm² cable is small, and the outer diameter of a 25mm² cable is large, but the overall appearance remains a relatively regular circular shape.
(IV) Production Process
The production process of these two-core copper conductor XLPE
Insulated Power cables needs to go through multiple strict procedures to ensure that the product quality meets relevant standards.
The first step is the preparation of the conductor. High-purity copper materials are selected as raw materials, and the copper materials are drawn into
Copper Wires with the required diameter by a wire drawing machine. During the wire drawing process, it is necessary to accurately control the wire drawing speed and the precision of the die to ensure that the diameter of the copper wire is uniform and the surface is smooth and free of defects. After that, multiple copper wires are stranded together according to certain rules to form a core with the required cross-sectional area. The stranding process can improve the
Flexibility and mechanical strength of the core, making it not easy to break during subsequent processing and use.
The next step is the extrusion of the insulation layer. The prepared
Copper Core wire is passed through an extruder, and a layer of cross-linked polyethylene insulation layer is uniformly extruded on its outside. During the extrusion process, it is necessary to strictly control parameters such as extrusion temperature, pressure and speed. Excessively high temperature will cause the decomposition of XLPE materials and affect the insulation performance; excessively low temperature will make the insulation layer not closely combined with the copper core, which is easy to cause delamination. The extruded
Insulated Core needs to undergo cross-linking treatment, usually by warm water cross-linking or steam cross-linking, so that the polyethylene molecules form a stable network structure, thereby endowing the insulation layer with excellent performance.
Then comes the cabling process. For two-
Core Cables, the two insulated cores are stranded according to a certain stranding direction and pitch. During stranding, it is necessary to ensure that the positions of the two cores are accurate and the tension is uniform to avoid core loosening and twisting. The
Stranded Cable structure is more stable, which is convenient for the subsequent sheath extrusion process.
After cabling, the sheath is extruded. According to different models, the corresponding sheath materials are selected, and the sheath layer is extruded on the outside of the cabled core through an extruder. YJV cables use polyvinyl chloride sheath materials, R2V cables may use ordinary polyvinyl chloride sheath materials, and RO2V cables use sheath materials added with weather-resistant components. During the extrusion process, it is necessary to control the thickness of the sheath layer to ensure uniform thickness, smooth surface, and close combination with the inner core to play a protective role.
Finally, there is the finished product inspection. A comprehensive inspection is carried out on the appearance, size, insulation performance and conductivity of the cable. The appearance inspection mainly checks whether the surface of the cable is smooth, whether there are damages, scratches, etc.; the size inspection includes core cross-sectional area, insulation layer thickness, sheath layer thickness, etc.; the insulation performance inspection is carried out through voltage withstand tests to check the insulation strength of the insulation layer; the conductivity inspection is carried out through resistance tests to check the conductivity of the conductor. Only cables that meet the relevant standards in all indicators can leave the factory as qualified products.
II. General Product Information
(I) Packaging
Reasonable packaging is essential to ensure that cables are not damaged during transportation and storage.
These two-core copper conductor
XLPE Insulated Power Cables usually adopt different packaging methods according to their specifications and lengths. For cables with relatively small cross-sections and short lengths such as 2×4mm² and 2×10mm², coil packaging can be used. The cable is neatly wound into a coil, tightly wrapped with plastic film, and then put into a carton. The size of the carton is determined according to the size of the cable coil to ensure that the cable does not shake in the carton. This packaging method has low cost, is convenient for handling and storage, and is suitable for small-batch transportation.
For cables with large cross-sections and long lengths such as 2×16mm² and 2×25mm², cable reel packaging is generally used. There are two types of cable reels: wooden and steel. Wooden cable reels have low cost and light weight, but their load-bearing capacity is relatively weak, and they are suitable for medium and short-distance transportation; steel cable reels have strong load-bearing capacity and high strength, and are suitable for long-distance transportation and large-batch cable packaging, but their cost is relatively high.
In the packaging process, whether it is coil packaging or cable reel packaging, the model, specification, length, production date, manufacturer and other information of the cable should be clearly marked on the package to facilitate user identification and acceptance. At the same time, moisture-proof materials such as plastic film are wrapped on the outer layer of the cable to prevent the cable from getting damp during storage and transportation.
(II) Transportation
Cable transportation needs to pay attention to multiple links to ensure the safety of cables during transportation.
In the loading link, for coil-packaged cables, they should be neatly stacked on the transport vehicle to avoid extrusion and collision. When stacking, attention should be paid to the uniform distribution of weight to prevent the cables at the bottom from being crushed. For cable reel-packaged cables, use cranes or forklifts to smoothly hoist the cable reels to the transport vehicle. Special hoisting tools should be used for hoisting to avoid damage to the cable reels and cables. On the transport vehicle, the cable reels should be fixed firmly. Steel wire ropes or fastening belts can be used to fix them on the guardrails of the vehicle to prevent the cable reels from rolling and shifting due to vehicle bumps and turns during transportation.
During transportation, it is necessary to choose a suitable transportation route and try to avoid roads with poor road conditions and severe bumps. The transport vehicle should drive smoothly, avoiding violent operations such as sudden braking and sharp turns to reduce the impact on the cables. At the same time, attention should be paid to weather changes. In case of bad weather such as rain and snow, the cables should be covered with rainproof cloth to prevent rainwater and snowwater from entering the interior of the cables and affecting the performance of the cables.
During transportation in summer, avoid long-term exposure of cables to sunlight to prevent aging of the sheath material due to high temperature; during transportation in winter, pay attention to keeping warm to avoid cracking of the sheath material due to brittleness in low-temperature environments. Transport personnel should regularly check the packaging and fixing of the cables and deal with problems in a timely manner if found.
(III) Delivery
The delivery link is an important link connecting manufacturers and customers, and requires rigorous operation to ensure that goods are delivered to customers accurately and in a timely manner.
After receiving the customer's order, the staff should check the order information in a timely manner, including the model, specification, quantity, delivery address, delivery time of the cable, etc., to ensure that the information is accurate. Then, retrieve the corresponding cables from the warehouse according to the order requirements, and conduct a strict outgoing inspection on the cables to check whether the packaging is intact, the logo is clear, and there is any damage.
After passing the inspection, arrange a suitable transportation method. According to the customer's delivery time requirements and transportation distance, choose transportation methods such as express delivery and logistics 专线. For urgent orders, priority should be given to arranging delivery to ensure delivery within the specified time.
Before delivery, the delivery information of the cable should be promptly informed to the customer, including the transportation method, transport vehicle information, estimated arrival time, etc., so that the customer can prepare for receipt. At the same time, relevant documents such as invoices, product certificates, and test reports should be sent with the goods or mailed to the customer as required by the customer.
After the delivery is completed, the delivery records should be sorted and archived for subsequent inquiry and tracking.
(IV) Samples
In order for customers to understand the quality and performance of cables before bulk purchase, it is very necessary to provide sample services.
Customers can put forward sample requirements to the manufacturer and specify the model, specification and other information of the required samples. After receiving the sample requirements, the manufacturer will prepare the corresponding samples within the specified time. The length of the sample is generally 1-2 meters, which can meet the customer's inspection of the appearance, structure and material of the cable.
When preparing samples, it is necessary to ensure that the quality of the samples is consistent with that of mass-produced products. The samples are simply packaged, such as wrapped with plastic film, and the model, specification, production batch and other information of the samples are marked on the package. At the same time, relevant test reports of the samples, such as insulation performance test reports and conductivity test reports, can be attached to allow customers to have a more comprehensive understanding of the performance of the samples.
Samples are usually sent to customers by express. The manufacturer will choose a reputable express company with fast transportation speed and promptly inform the customer of the express waybill number to facilitate the customer to query the logistics information of the samples. After the customer receives the samples, the manufacturer can take the initiative to communicate with the customer to understand the customer's feedback on the samples and make corresponding adjustments and improvements according to the customer's opinions.
(V) After-Sales Service
Perfect after-sales service can provide protection for customers and enhance their purchase confidence.
During the installation of the cable, if the customer encounters technical problems, such as uncertain installation methods and unclear laying requirements, they can contact the after-sales service personnel of the manufacturer by phone, email, online customer service, etc. After-sales service personnel will promptly provide professional technical guidance, such as providing installation manuals and video tutorials, to help customers successfully complete the installation.
If the cable has quality problems during use, the customer can feedback to the manufacturer. The manufacturer will arrange professional personnel to investigate and determine the cause of the problem. If the failure is caused by the product's own quality problems and is within the warranty period, the manufacturer will provide repair, replacement and other services for the customer in accordance with relevant regulations.
The manufacturer will also conduct regular return visits to customers to understand the use of cables and collect customers' opinions and suggestions. Based on customer feedback, continuously improve product quality and service levels. At the same time, provide customers with relevant product knowledge and maintenance suggestions, such as daily inspection methods of cables and maintenance precautions, to help customers extend the service life of cables.
The warranty period is usually 1-5 years, depending on the model of the cable and the usage scenario. During the warranty period, the manufacturer will assume corresponding quality assurance responsibilities; after the warranty period, the manufacturer can still provide maintenance services, but may charge a certain maintenance fee.
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