I. Product - Related Information
(I) Specifications and Parameters
The Dvxca type 1kv unipolar aluminum conductor cross - linked polyethylene (XLPE) underground
Electrical Power Cable has specifications ranging from 1X50mm to 1X240mm and a rated current of 16A. Various parameters are accurately adapted to underground low - voltage power transmission scenarios.
In terms of conductor specifications, the diameter of the 1X50mm conductor is about 8mm, and that of the 1X240mm conductor is about 18mm. After adding the cross - linked polyethylene insulation layer, the overall outer diameter varies with the specification. The outer diameter of the 1X50mm cable is about 10mm, and that of the 1X
240mm Cable is about 25mm.
In terms of electrical performance, in addition to the rated current of 16A, its insulation resistance is not less than 1000MΩ·km at 25℃, which can effectively prevent current leakage. The maximum short - circuit withstand temperature of the cable can reach 250℃ for no more than 5 seconds, which can buy time for the operation of circuit protection devices when a short - circuit fault occurs.
In terms of mechanical performance, the bending radius of the cable is not less than 10 times the outer diameter of the cable, which is convenient for laying and steering in narrow underground spaces. At the same time, it can withstand a radial pressure of not less than 5kN, which can resist the pressure of underground soil and ensure stable operation in the underground environment.
(II) Characteristic Uses
Low - Voltage Power Distribution in Residential Communities
In residential communities, the cable can be used as a low - voltage power distribution line to connect the community distribution room and the distribution box of residential buildings. For example, it can provide power support for ordinary lighting and household appliances in residential buildings. Due to its various specifications, it can choose cables of appropriate specifications according to the power demand of different buildings, and its laying is flexible, which can adapt to the complex pipeline layout underground in the community.
Power Supply for Small Factory Equipment
Some small - power equipment in small factories, such as small lathes and packaging machines, can be powered by this cable. It can stably transmit power to meet the normal operation needs of the equipment. The underground environment of small factories may have certain dust and slight corrosive substances, and the insulation layer and conductor of the cable have certain corrosion resistance, which can adapt to such an environment.
Municipal Street Lamp Lines
The cable can be used for power supply lines of street lamps on both sides of municipal roads. It is buried underground to supply power to street lamps, and the unipolar structure design makes the laying process simple and convenient. Street lamps are relatively scattered, and the cable can stably transmit power underground to ensure the normal lighting of street lamps. At the same time, it has good temperature resistance and can adapt to temperature changes in different seasons.
Power Distribution in Small Commercial Places
The underground power distribution lines of small commercial places such as small supermarkets and convenience stores can also use this cable. It can supply power to lighting, cash registers, small refrigerators and other equipment in the store. Its compact structure occupies little underground space, which is suitable for the environment with many underground pipelines in commercial places.
(III) Material and Style
Conductor Material
The conductor is made of high - purity aluminum with a purity of more than 99.5%. The aluminum conductor is treated with a special process, and a dense oxide film is formed on the surface. This oxide film can effectively improve the corrosion resistance of the conductor, making it not easy to be corroded in the humid underground environment. At the same time, the special process also improves the conductivity of aluminum and reduces energy loss during power transmission. The unipolar aluminum conductor structure ensures the conductivity, reduces the overall weight of the cable and lowers the laying difficulty.
Insulation Layer Material
The insulation layer is made of cross - linked polyethylene (XLPE) material. After cross - linking treatment, its molecular structure forms a three - dimensional network structure, which greatly improves the temperature resistance and mechanical strength. It has a wide temperature resistance range and can work stably in the environment of - 40℃ to 90℃, which can adapt to temperature changes at different underground depths. The XLPE insulation layer also has good insulation performance and chemical corrosion resistance, which can resist the erosion of underground water vapor and chemical substances in the soil and ensure the safety of power transmission.
Style Design
The cable has a unipolar structure and is cylindrical as a whole with a compact structure. The outside of the conductor is wrapped with a uniform cross - linked polyethylene insulation layer, with a flat and smooth appearance. Clear marks are printed on the surface of the cable, including model (Dvxca), specification, rated voltage, rated current, manufacturer and other information, which is convenient for users to identify and select. The color is usually black, which is not only dirt - resistant but also can absorb a certain amount of heat, reducing the impact of external temperature changes on the cable.
(IV) Production Process
Aluminum Conductor Processing
First, the high - purity aluminum raw materials are inspected to ensure that their purity and performance meet the requirements. The aluminum material is drawn into
Aluminum Wires of specified diameter through wire drawing equipment. During the wire drawing process, the wire drawing speed and die precision are strictly controlled to ensure uniform diameter of the
Aluminum Wires. Then, the aluminum wires are annealed to improve their
Flexibility. After that, the aluminum wires are stranded to form conductors of the required specification. During stranding, uniform tension is maintained to ensure a tight conductor structure. Finally, the surface of the conductor is treated to form an oxide film to enhance corrosion resistance.
XLPE Insulation Layer Extrusion
The cross - linked polyethylene material is pretreated to remove moisture and impurities. The treated material is sent to the extruder and melted and plasticized at high temperature. The molten XLPE material is evenly coated on the surface of the aluminum conductor through an extrusion die to form an insulation layer. During the extrusion process, the extrusion temperature, pressure and speed are accurately controlled to ensure that the insulation layer has a uniform thickness, is closely combined with the conductor and has no defects such as bubbles and pinholes. Subsequently, the insulation layer is cross - linked by dry cross - linking to make the XLPE molecules form a stable three - dimensional network structure.
Cooling and Shaping
The cable with the extruded insulation layer enters the cooling water tank for cooling and shaping. During the cooling process, the water temperature is controlled to allow the cable to cool slowly, avoiding cracks in the insulation layer due to rapid cooling. After cooling, the cable is dried to remove surface moisture.
Finished Product Inspection
Finished cables need to undergo strict inspection. The appearance inspection checks whether the surface of the insulation layer is smooth, whether there is damage and whether the marks are clear; the size measurement includes conductor diameter, insulation layer thickness, cable outer diameter, etc. to ensure that they meet the specification requirements; the electrical performance test covers insulation resistance test, voltage withstand test, etc. to verify its electrical safety; the mechanical performance test includes bending performance, tensile performance, etc. to detect the mechanical strength of the cable. Only cables that pass all inspection items can be stored in the warehouse.
II. General Product Information
(I) Packaging
Packaging Materials
The cable is packaged in a reel type, and the reel is made of cardboard or plastic. Cardboard reels have low cost and certain environmental protection, which are suitable for short - distance transportation and small - batch delivery; plastic reels have high strength and good waterproof performance, which are suitable for long - distance transportation and large - batch delivery.
After the cable is wound on the reel, it is wrapped with a plastic film as a whole. The plastic film can play the role of moisture - proof and dust - proof, protecting the cable surface from pollution and damage. For cables that need to be stored for a long time, a layer of kraft paper is covered outside the plastic film to further enhance the protection effect.
Packaging Methods
When packaging, the cable is neatly wound on the reel, and appropriate tension is maintained during winding to avoid loose or excessive stretching of the cable. After winding, the cable is tightly wrapped with a plastic film, and the interface of the film is sealed with tape.
A label is fixed on the side of the reel, which is marked with detailed information such as product model, specification, length, rated voltage, rated current, production batch number, production date, manufacturer's name, address and contact information. Warning signs such as "Up" and "Handle with Care" are marked in obvious positions of the reel.
(II) Transportation
Transportation Methods
Short - distance transportation (within 100 kilometers) generally uses small trucks. This transportation method is flexible and convenient, can quickly deliver the cable to the destination and is suitable for small - batch transportation.
Medium and long - distance transportation (100 - 1000 kilometers) can choose medium - sized trucks, which have a large loading capacity and can meet the transportation needs of medium - batch cables. For long - distance transportation (more than 1000 kilometers), special line transportation of logistics companies can be used, which has a more stable transportation process and higher safety.
Transportation Precautions
Before transportation, the reel with the cable must be fixed on the transport vehicle to prevent rolling during transportation. Ropes or bandages can be used for fixing to ensure the reel is stable.
During transportation, the cable should be prevented from being exposed to direct sunlight and rain. If transported in the open air, a tarpaulin must be covered. At the same time, bumpy roads should be avoided to reduce the vibration of the cable and prevent the cable from loosening from the reel.
It is strictly forbidden to mix the cable with flammable, explosive and corrosive items to avoid pollution and damage to the cable. When loading and unloading the cable, handle it with care to avoid collision and deformation of the reel.
(III) Shipment
Shipment Process
After the customer places an order, the customer service staff will check the order information within 2 hours, including product model, specification, quantity, receiving address, contact information, etc., to ensure that the information is accurate. After checking, a delivery note is generated and sent to the warehouse.
After receiving the delivery note, the warehouse retrieves the corresponding cable from the inventory according to the order information, counts the quantity and conducts an appearance inspection to ensure that the cable packaging is intact and not damaged. After passing the inspection, the cable is transported to the shipping area.
The warehouse contacts the transport company to inform the goods information, transportation requirements and shipping time. When the transport vehicle arrives, the warehouse staff and the driver check the goods information together, go through the goods handover procedures and assist the driver in loading the cable onto the vehicle. After loading, the warehouse staff fills in the waybill, indicating the relevant information of the goods. After shipment, the customer service staff promptly informs the customer of the waybill number, the contact information of the transport company and the estimated arrival time.
Shipment Time
When the inventory is sufficient, orders placed before 16:00 on the same day can be shipped on the same day; orders placed after 16:00 will be shipped the next day. For large orders (more than 30 reels), it is necessary to sort out the inventory and pack in a centralized way, and the shipment time may be delayed by 1 working day.
Cables with customized lengths require additional cutting and packaging time, and are generally shipped within 2 - 3 working days after the order is confirmed. In case of special circumstances such as holidays and bad weather, the shipment time will be delayed accordingly, and the customer service staff will communicate with the customer in advance.
(IV) Samples
Sample Provision
The company provides sample services for customers. Customers can apply for samples through sales personnel or online customer service and specify the specifications of the required samples. The length of the sample is generally 1 - 2 meters, which is provided to customers free of charge.
The material and production process of the samples are exactly the same as those of mass - produced products, which can truly reflect the actual performance of the products. The transportation cost of the samples shall be borne by the customer, and the customer can choose to pay on delivery or in advance. For customers with large purchase intentions, the company can reduce or exempt the sample transportation cost.
Sample Delivery
After the samples are prepared, the staff will package them. The samples are sealed in a sealed bag and put into a hard carton, and buffer materials such as foam and bubble film are filled in the carton to prevent the samples from being damaged during transportation. The sample specification, company name and contact information are marked on the package.
Samples are sent by express, and express companies with good service quality and fast transportation speed are selected. After the samples are sent, the sales personnel will inform the customer of the express waybill number, and the customer can check the logistics status of the samples through the waybill number. Samples in domestic areas can generally be delivered within 3 - 5 working days; it may take 5 - 7 working days in remote areas.
(V) After - sales Service
Quality Assurance
The company provides a 36 - month warranty period for the cable product, starting from the date when the customer receives the product and accepts it. During the warranty period, if the cable fails due to its own quality problems (such as conductor corrosion and fracture, insulation layer aging and damage and other non - human factors), the company is responsible for providing customers with free replacement of new products or maintenance.
If the cable is damaged due to improper use by the customer (such as use beyond the rated current, wrong laying method, external impact, etc.), the company provides paid maintenance or replacement services, and the maintenance cost is charged according to the actual situation.
After - sales Service Process
If a customer finds a quality problem with the cable during use, he can provide feedback through customer service hotlines, online customer service, email and other channels. After receiving the feedback, customer service staff will record customer information, product specifications, purchase time, problem descriptions and related photos or videos (if any) in detail.
Customer service staff will submit the problem to the after - sales technical team within 24 hours, and the technical team will analyze and judge the problem. If it is initially judged to be a product quality problem, the technical staff will contact the customer to further understand the situation and arrange for technical staff to conduct on - site investigation if necessary.
For confirmed product quality problems, the company will negotiate solutions (replacement or repair) with the customer and complete the relevant work within the agreed time. The replaced products will be shipped within 3 working days after the customer returns the faulty products and they pass the inspection. If it is not a product quality problem, the technical staff will explain the reasons to the customer and provide corresponding solutions and cost estimates, and provide services after the customer's consent.
Technical Support
The company has a professional technical team to provide customers with comprehensive technical support. When customers purchase cables, technical staff can recommend appropriate cable specifications according to the customer's use scenarios, power load and other factors, and provide relevant technical parameters and selection suggestions.
If customers encounter technical problems during cable laying and installation, such as requirements for bending radius and joint treatment methods, they can consult technical staff at any time, and the technical staff will provide detailed guidance. The company will also provide customers with technical materials related to products, such as product manuals and installation guides. In addition, the technical team will conduct regular return visits to customers to understand the use of cables, collect customer opinions and suggestions, and continuously improve products and services.
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