I. Product - Related Information
(I) Specifications and Parameters
YJV and VV type 3X16+1X10mm² stranded copper
Wire Cables are specially designed for low - voltage power transmission, with various specifications and parameters suitable for multiple power consumption scenarios.
The cable adopts a 4 - core structure, among which 3 cores are main wires of 16mm² and
1 Core is a
Ground Wire of 10mm². The diameter of the main wire conductor is about 4.5mm, and the diameter of the ground wire conductor is about 3.5mm. After adding the XLPE insulation layer and low - smoke halogen - free LSZH sheath, the overall outer diameter of the cable is about 15 - 18mm.
In terms of electrical performance, its rated voltage is 0.6/1kV, which is suitable for low - voltage power systems. At 25℃, the current - carrying capacity of the main wire is about 65 - 75A, which can meet the power transmission needs of small and medium - sized power systems. The insulation resistance is not less than 1000MΩ·km at 20℃, and the insulation performance is reliable, which can effectively prevent current leakage.
The temperature resistance range of the cable is - 40℃ to 90℃, and it can maintain stable performance in extreme temperature environments. The bending radius is not less than 12 times the outer diameter of the cable, which is convenient for bending and laying according to actual needs during wiring. In addition, its maximum short - circuit temperature can reach 250℃ for no more than 5 seconds, which can buy time for the action of circuit protection devices when a short - circuit fault occurs.
(II) Characteristic Uses
Field of Building Power Distribution
In civil buildings, the cable can be used for floor power distribution trunks, incoming lines of household distribution boxes, etc. The YJV type is suitable for use in dry indoor environments such as corridor ceilings and wall concealed laying, such as power distribution shaft wiring in high - rise residential buildings; the VV type can play a role in relatively humid areas such as basements and bathrooms to ensure the stable operation of the power distribution system. In commercial buildings such as shopping malls and office buildings, it can be used as the main
Power Line for shops and offices to provide power support for lighting, air conditioners, office equipment, etc.
Industrial Equipment Wiring
In the production workshops of small and medium - sized factories, the cable can connect production equipment and distribution boxes, such as power supply lines for machine tools and small production lines. Due to the possible mechanical vibration in the industrial environment, the multi - strand
Stranded Copper Wire structure of the cable can reduce the impact of vibration on the conductor and ensure stable power transmission. At the same time, the wear - resistant characteristic of the low - smoke halogen - free LSZH sheath can cope with the friction that may occur during the handling of equipment in the workshop.
Power Consumption of Public Facilities
In public facilities such as schools and hospitals, the cable can be used for power distribution lines in teaching buildings and wards. Some areas of hospitals have extremely high safety requirements. The low - smoke halogen - free LSZH sheath, which produces little smoke and releases no toxic gas in case of fire, can buy time for personnel evacuation and rescue. Places with many electrical equipment in schools, such as laboratories and multimedia classrooms, can also rely on this cable to achieve safe power supply.
Other Scenarios
In some temporary power consumption places, such as the lines from the temporary distribution room of construction sites to construction equipment, the cable can also meet the short - term power transmission needs. Its good
Flexibility and durability can adapt to the complex environment of temporary wiring.
(III) Material and Style
Conductor Material
The conductor is made of multi - strand stranded copper wire, and high - purity electrolytic copper is used as the raw material with a purity of more than 99.95%. High - purity copper has excellent electrical conductivity, which can reduce energy consumption during current transmission and improve power transmission efficiency.
The multi - strand stranded structure makes the conductor have strong flexibility. Compared with single - strand conductors, it can better withstand bending and vibration and is not easy to break during wiring, which can maintain stable conductivity and extend the service life of the cable. The surface of the stranded copper wire is treated with anti - oxidation to prevent oxidation during storage and use and prolong the service life of the conductor.
Insulation Layer Material
The insulation layer is made of XLPE (cross - linked polyethylene) material, which has excellent insulation performance, can effectively block current and ensure the safe operation of the cable. After cross - linking treatment, XLPE forms a three - dimensional network structure, which greatly improves its temperature resistance. It will not soften or melt in high - temperature environments and will not become brittle in low - temperature environments.
In addition, the XLPE insulation layer has good chemical stability, is not easy to be eroded by oil, acid, alkali and other substances, and can maintain insulation performance in various complex environments. It has high mechanical strength, and its tensile strength and elongation at break meet relevant standards, which can withstand stretching and extrusion during wiring.
Sheath Layer Material
The sheath is made of low - smoke halogen - free LSZH (low smoke zero halogen flame retardant) material. This material produces extremely low smoke concentration in case of combustion, with high visibility, and will not release toxic gases such as hydrogen chloride. It can reduce the harm to personnel and equipment in case of fire and is an environmentally friendly and safe sheath material.
The low - smoke halogen - free LSZH sheath has good wear resistance and impact resistance, which can protect the internal insulation layer and conductor from external mechanical damage. At the same time, it also has certain ultraviolet resistance and is not easy to age due to sunlight when laid outdoors for a short time. In addition, the sheath material does not contain halogen, meets environmental protection requirements and can be recycled.
Style Design
The overall cable is round with a compact structure. The
4 Cores are arranged in order inside, and the outer layer is wrapped with an XLPE insulation layer and a low - smoke halogen - free LSZH sheath in turn, with a flat and smooth appearance. This style design is not only convenient for production and processing but also conducive to passing through wire pipes and cable trays during laying.
The surface of the cable is printed with clear marks, including model (YJV or VV), specification (3X16+1X10mm²), rated voltage, manufacturer and other information, which is convenient for users to identify and select. In terms of color, it is usually black. Black is not only resistant to dirt but also can absorb a certain amount of heat, reducing the impact of external temperature changes on the cable.
(IV) Production Process
Conductor Stranding
First, the copper material is inspected to ensure that its purity and performance meet the requirements. The copper material is drawn into copper wires of specified diameter. During the wire drawing process, the wire drawing speed and die precision are strictly controlled to ensure uniform diameter of the copper wires. Then, according to a specific stranding process, multiple copper wires are stranded to form conductors of 16mm² and 10mm². A regular stranding method is adopted during stranding to ensure that the copper wires are arranged closely with uniform tension. The stranding pitch is controlled within a reasonable range to ensure the conductivity and flexibility of the conductor. After stranding, the conductor is surface treated to remove oil and impurities.
XLPE Insulation Layer Extrusion
The XLPE
Insulation Material is pretreated to remove moisture and impurities to avoid affecting the insulation performance. 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
Copper 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. After that, the insulation layer is cross - linked. The XLPE molecules are formed into a stable three - dimensional network structure by means of steam cross - linking or dry cross - linking to enhance their temperature resistance and mechanical strength.
Cabling
Three 16mm² main wires and one 10mm² ground wire covered with XLPE insulation layers are cabled according to a certain arrangement. A cabling machine is used for cabling to ensure that each core wire is in a stable position with uniform tension. During cabling, filling materials can be filled between the core wires as needed to make the cable structure more round and reduce wear during laying. After cabling, a wrapping tape is used for wrapping and fixing to prevent the core wires from loosening.
Low - Smoke Halogen - Free LSZH Sheath Extrusion
The low - smoke halogen - free LSZH sheath material is dried to remove moisture. The treated material is added to the extruder, melted and evenly coated on the cabled core through an extrusion die to form a sheath layer. The extrusion process parameters are controlled to ensure that the sheath layer has a uniform thickness, a smooth surface and is closely combined with the cable core. After extrusion, the cable is cooled and shaped to ensure the stable shape of the sheath layer.
Finished Product Inspection
The finished cable needs to undergo a series of strict inspections, including appearance inspection (whether the sheath surface is smooth, whether there is damage, whether the marks are clear), size measurement (conductor diameter, insulation layer and sheath layer thickness, cable outer diameter), electrical performance test (insulation resistance, voltage withstand test), mechanical performance test (tensile strength, elongation at break) and low - smoke halogen - free performance test (smoke density, toxicity index), etc. Only products that meet all standards can be packaged and stored in the warehouse.
II. General Product Information
(I) Packaging
Packaging Materials
The cable is packaged with wooden or steel cable reels. Wooden cable reels have low cost and light weight, which are suitable for short - distance transportation and small - batch delivery. Their materials are environmentally friendly and recyclable. Steel cable reels have high strength and strong bearing capacity, which can bear large weight and pressure. They are suitable for long - distance transportation and large - batch delivery and can be reused with a long service life.
After the cable is wound on the cable reel, it will be wrapped with a plastic film as a whole. The plastic film can effectively prevent moisture and dust and protect the cable surface from pollution. For cables exported or stored for a long time, a layer of linen cloth is covered outside the plastic film to further enhance the protection effect and prevent the cable from being worn during transportation and storage.
Packaging Methods
When packaging, the cable is neatly wound on the cable 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 to ensure that every part is covered, and the film interface is sealed with tape.
A label is fixed on the side of the cable reel, which is marked with detailed information such as product name, model, specification, length, production date, batch number, implementation standard, manufacturer's name, address and contact information. For steel cable reels, anti - rust treatment such as spraying anti - rust paint is also done on the reel body. After packaging, warning signs such as "Up", "Handle with Care" and "Keep Dry" are marked in obvious positions of the cable reel.
(II) Transportation
Transportation Methods
According to the transportation distance and order quantity, different transportation methods can be selected. For short - distance transportation (within 100 kilometers), small trucks are generally used. This transportation method is flexible and convenient, can quickly deliver goods to the destination, and is suitable for the transportation of small - batch and urgent orders.
For medium - and long - distance transportation (100 - 1000 kilometers), large freight trucks are usually used, which have a large loading capacity and relatively low transportation costs, and are suitable for the transportation of medium - batch goods. For long - distance transportation (more than 1000 kilometers) or export orders, railway transportation or container shipping can be adopted. Railway transportation has good stability and is less affected by weather; container shipping is suitable for large - batch goods with low transportation costs but relatively long transportation time.
Transportation Precautions
During transportation, the cable reel must be fixed firmly. Steel wire ropes, fastening belts, etc. can be used to fix it in the carriage of the transport vehicle to prevent rolling and collision during driving. When fixing, attention should be paid to uniform force to avoid deformation of the cable reel.
Transport vehicles should avoid driving at high speed on bumpy roads to reduce the vibration of the cable reel. At the same time, the cable should be prevented from being exposed to direct sunlight, rain, snow and ice. If transported in the open air, a tarpaulin must be covered. During transportation, it is strictly forbidden to mix the cable with flammable, explosive and corrosive goods to avoid pollution and damage to the cable.
When loading and unloading cables, professional loading and unloading equipment such as forklifts and cranes must be used. It is strictly forbidden to manually drag or roll the cable reel. The loading and unloading process should be kept stable to avoid the cable reel colliding with other objects. In case of special weather during transportation, protective measures should be taken in time, and it is necessary to stop for shelter if necessary.
(III) Shipment
Shipment Process
After the customer places an order, the customer service personnel 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 and correct. After checking, a delivery notice is generated and sent to the warehouse.
After receiving the delivery notice, the warehouse retrieves the corresponding cable products from the inventory according to the order information. The warehouse management personnel count the quantity of products and conduct appearance inspection to confirm that the product packaging is intact, the marks are clear and there is no damage. After passing the inspection, the products are transported to the shipping area.
The warehouse contacts the cooperative 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 cables onto the vehicle. After loading, the warehouse staff fills in the waybill, indicating the goods name, quantity, specification, consignee and consignor information, etc. After shipment, the customer service personnel promptly inform 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 15:00 on the same day can be arranged for shipment on the same day; orders placed after 15:00 will be shipped the next day. If the order quantity is large (more than 50 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.
For customized products (such as cables of special length), the shipment time shall be determined according to the production progress, and generally, shipment shall be arranged within 1 working day after the completion of production. In case of special circumstances such as holidays and bad weather, the shipment time will be delayed accordingly, and the customer service personnel will communicate with the customer in advance to explain the reason and inform the new shipment time.
(IV) Samples
Sample Provision
To help customers understand product quality and performance, the company provides sample services. Customers can apply for samples through sales personnel or online customer service, specifying the required sample model (YJV or VV) and specification (3X16+1X10mm²).
The sample length is generally 1 - 2 meters, provided free of charge to customers. The material and 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 long - term cooperative customers or potential large - order customers, the sample transportation cost can be reduced or exempted as appropriate.
Sample Delivery
After the samples are prepared, the staff will package the samples. The samples are sealed in a sealed bag, put into a hard carton, and buffer materials are filled in the carton to prevent the samples from being damaged during transportation. The sample model, specification, company name and contact information are marked on the package.
Samples are sent by express, and express companies with high - quality service and fast transportation speed are selected. After the samples are sent, the sales personnel will promptly inform the customer of the express waybill number, so that the customer can track the logistics status of the samples. Samples in domestic areas can generally be delivered within 3 - 5 days; it may take 5 - 7 days in remote areas. During the sample delivery process, the company will track the samples to ensure that they are safely delivered to the customers.
(V) After - sales Service
Quality Assurance
The company provides quality assurance for the cable product, with a warranty period of 36 months from the date when the customer receives the product and accepts it. During the warranty period, if the cable has problems due to its own quality problems (such as conductor breakage, aging and cracking of the insulation layer, performance failure caused by sheath 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 voltage, wrong laying method, external impact, private modification, etc.), the company does not assume the responsibility of free warranty, but can provide 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 feedback through customer service phone, online customer service, email and other channels. After receiving the feedback, the customer service personnel will record the customer information, product model, purchase time, problem description and related photos or videos (if any) in
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