I. Product - Related Information
(I) Specifications and Parameters
The AVVB-0.66 4X16mm² outdoor steel tape
Armored Power cable is a cable product specially designed for underground power transmission. In "AVVB-0.66", "0.66" represents that the rated voltage of the cable is 0.66kV, which can operate stably in low-voltage power systems and is suitable for low-voltage power distribution scenarios such as residential quarters and municipal roads.
"4X16mm²" indicates that it has a 4-core structure, and the cross-sectional area of each core conductor is 16mm². This 4-core design can meet the common power distribution needs such as three-phase four-wire system, realizing efficient power transmission and distribution. The current-carrying capacity of this specification cable is about 45-55A. Under 0.66kV voltage, it can transmit power of a certain wattage, fully meeting the power transmission needs of small and medium-sized underground power distribution.
In terms of structural dimensions, the outer diameter of the cable is affected by the multi-layer structure. The
Aluminum Conductor, inner
PVC Insulation layer, steel tape armor layer and outer
PVC Sheath together determine the overall outer diameter, which is usually within a reasonable range, facilitating underground direct burial or pipe laying. Its bending radius also has clear requirements, generally not less than 12 times the outer diameter of the cable. This parameter ensures that the cable will not be damaged due to excessive bending during laying.
In addition, the insulation resistance of the cable meets relevant standards. At 20℃, the insulation resistance per kilometer is not less than 100MΩ. The high insulation resistance ensures good insulation performance and effectively reduces the risk of electric leakage.
(II) Characteristic Uses
With its own characteristics, this cable has a wide range of applications. In terms of residential area power distribution, the underground power distribution branches of residential areas need stable and safe power transmission, and this cable can be perfectly adapted. There are various electrical equipment in residential areas, and the underground environment may have soil extrusion and other situations. The steel tape armor layer of the cable can resist these external forces, ensuring the continuous transmission of power to each building.
In the
Underground Cable network of municipal roads, this cable is also an ideal choice. The underground environment of roads is complex, and there may be vibrations caused by vehicle driving, soil corrosion, etc. The weather resistance of the outer PVC sheath and the mechanical protection of the steel tape armor layer can enable the cable to work stably in such an environment for a long time, providing power support for road lighting, traffic lights and other facilities.
In the underground power distribution system of industrial parks, the power supply of some small and medium-sized production equipment can rely on this cable. There may be certain chemical erosion in the underground of the park. The outer PVC sheath of the cable can resist corrosion and ensure that power transmission is not affected. At the same time, its 4-core structure and appropriate current-carrying capacity can meet the needs of some power distribution lines in the park.
In addition, this cable can also play a role in underground power transmission for agricultural irrigation. The underground environment in agricultural irrigation areas may be relatively humid, and the moisture-proof performance of the cable can ensure its normal operation and provide stable power for irrigation equipment.
(III) Material and Style
Conductor Material
The conductor is made of aluminum, which has good electrical conductivity and can meet the power transmission needs of 0.66kV low-voltage systems. Compared with copper, aluminum has a lower density, which makes the overall weight of the cable lighter. During underground laying, it can reduce the bearing pressure on the laying environment, reduce the laying difficulty, and also reduce the burden on the laying pipes or surrounding soil.
At the same time, the aluminum conductor has been specially treated to have a certain oxidation resistance, which can resist the oxidation in the underground environment to a certain extent and extend the service life of the conductor. Its mechanical strength can also meet the use requirements, and it is not easy to break or be damaged during normal laying and use.
Insulation Layer Material
The inner insulation layer is made of polyvinyl chloride (PVC). PVC has excellent insulation performance, which can effectively block current, prevent current leakage, and ensure the safety of power transmission. It also has a certain temperature resistance and can work stably in the temperature range of -15℃ to 60℃, adapting to the temperature changes in the underground environment.
Moreover, the PVC insulation layer has good chemical stability and is not easy to react with general substances in the ground, so it can maintain insulation performance for a long time. It has good processing performance and can be evenly coated on the surface of the aluminum conductor to form a continuous and dense insulation layer.
Armor Layer Material
The armor layer is made of steel tape (Sta). The steel tape has high mechanical strength and can provide strong mechanical protection for the cable. During underground laying, it can resist external forces such as soil extrusion and stone collision, preventing damage to the internal structure of the cable.
The steel tape also has good toughness. When subjected to external impact, it can absorb energy through a certain deformation, reducing the impact on the internal conductor and insulation layer. At the same time, the corrosion resistance of the steel tape has been improved after treatment, and it can be used in a humid underground environment for a long time without being easily rusted.
Sheath Layer Material
The outer sheath is also made of polyvinyl chloride (PVC). This material has excellent weather resistance and can resist the humid underground environment, preventing moisture from entering the cable. It also has good corrosion resistance and can resist the erosion of acid, alkali and other corrosive substances in the underground soil, protecting the internal structure.
In addition, the outer PVC sheath has good wear resistance. It is not easy to be worn when rubbing against soil, pipes, etc. during laying, ensuring that the armor layer and other internal structures are not exposed. Moreover, the PVC sheath has a certain flame retardancy, which can delay the spread of fire in case of accidental fire.
Style Design
The overall cable is round with a compact structure. The 4-core conductors are arranged in an orderly manner inside, and the outer layer is wrapped with an inner PVC insulation layer, a steel tape armor layer and an outer PVC sheath in turn, with a regular appearance. This style design is not only convenient for production and processing, but also conducive to saving space during underground laying.
Its steel tape armor layer gives the cable a certain rigidity, which can better resist external pressure, while retaining a certain
Flexibility, and can be bent within the specified bending radius to adapt to different laying paths. The color of the cable is usually black, which is not only resistant to dirt, but also can absorb heat to a certain extent, reducing the impact of temperature changes on the cable.
(IV) Production Process
Conductor Manufacturing
First, the aluminum raw materials are screened to select aluminum ingots that meet the requirements of purity and performance. The aluminum ingots are made into aluminum rods through smelting, billet casting and other processes. The quality of aluminum rods directly affects the performance of subsequent conductors. The aluminum rod is drawn into
Aluminum Wires with appropriate diameter through wire drawing equipment. During the wire drawing process, it is necessary to control the wire drawing speed and mold precision to ensure that the diameter of the
Aluminum Wire is uniform and the surface is smooth.
Subsequently, multiple aluminum wires are stranded to form a 16mm² conductor according to a specific stranding method. During stranding, it is necessary to ensure that the aluminum wires are arranged closely and with uniform tension to improve the conductivity and mechanical strength of the conductor. After stranding, the conductor is annealed to eliminate internal stress and enhance the flexibility of the conductor.
Inner PVC Insulation Layer Extrusion
The PVC
Insulation Material is pretreated to remove impurities and moisture. The treated material is sent to the extruder and melted and plasticized at high temperature. The molten PVC material is evenly coated on the surface of the aluminum conductor through an extrusion die to form an inner insulation layer.
During the extrusion process, it is necessary to accurately control the extrusion temperature, pressure and speed 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. The thickness of the insulation layer must meet the design requirements to ensure good insulation performance.
Steel Tape Armoring
Steel tape armoring is carried out on the cable core covered with the inner insulation layer. First, the steel tape is pretreated, such as derusting and coating with anti-corrosion layer, to improve its corrosion resistance. Then, the steel tape is wrapped around the cable core at a certain overlap rate through an armoring machine to form a continuous armor layer.
During the wrapping process, it is necessary to control the tension and wrapping angle of the steel tape to ensure that the armor layer is tight and flat without loosening or wrinkles. The overlap rate of the steel tape must meet the standard, generally not less than 15%, to ensure the integrity and protection effect of the armor layer.
Outer PVC Sheath Extrusion
The extrusion of the outer PVC sheath is similar to that of the inner insulation layer. The PVC sheath material is pretreated and then sent to the extruder for melting, and then coated on the steel tape armor layer through a die. It is necessary to control the process parameters to make the sheath layer have uniform thickness, smooth surface and close combination with the armor layer.
The sheath layer must completely cover the armor layer without missing wrapping or damage, so as to play a good protective role. After extrusion, the cable is cooled and shaped to ensure the stable shape of the sheath layer.
Finished Product Inspection
The finished product inspection is the final link of production, including appearance inspection, dimension measurement, electrical performance test and mechanical performance test. The appearance inspection checks whether the sheath is smooth and free of damage and whether the armor layer is flat; the dimension measurement checks whether the conductor cross-sectional area, insulation layer thickness, armor layer thickness and cable outer diameter meet the requirements; the electrical performance test includes insulation resistance and voltage withstand test; the mechanical performance test detects the tensile resistance, impact resistance and other properties of the cable. Only products that meet all indicators can leave the factory.
II. General Product Information
(I) Packaging
Packaging Materials
The cable is packaged with cable reels, which are divided into wooden and steel types. Wooden cable reels have relatively low cost and are suitable for short-distance transportation and general storage scenarios; steel cable reels have higher strength and stronger bearing capacity, and are suitable for long-distance transportation and multiple turnovers.
After the cable is neatly wound on the cable reel, it will be wrapped with a plastic film, which can play a role in moisture-proof and dust-proof, and protect the cable surface from pollution. For cables transported over long distances, a layer of woven bag is also covered outside the plastic film to enhance the protection of the cable and prevent collision damage during transportation.
Packaging Methods
When packaging, first wind the cable neatly on the cable reel, and maintain appropriate tension during winding to avoid loose or excessive stretching of the cable. After winding, wrap the entire cable roll tightly with plastic film to ensure that every part is covered.
If a woven bag is used, put the woven bag outside the plastic film and fix the woven bag on the cable reel with a rope to prevent the woven bag from falling off. A label will be pasted on the obvious position of the cable reel, indicating the product name, specification (AVVB-0.66 4X16mm²), length, production date, batch number, manufacturer and other information, which is convenient for identification and traceability.
(II) Transportation
Transportation Methods
According to the transportation distance and quantity, different transportation methods can be selected. For short-distance transportation (such as within tens of kilometers), small trucks are generally used. This transportation method is flexible and convenient, can quickly deliver the cable to the destination, and is suitable for small-batch transportation.
For medium and long-distance transportation with a large quantity, large freight trucks are usually used, which have a large loading capacity and relatively low transportation cost. For urgent needs, logistics 专线 transportation can also be chosen, which is faster and can shorten the transportation time.
Transportation Precautions
During transportation, the cable reel must be fixed firmly to prevent rolling and collision during the driving of the transport vehicle. Ropes, brackets, etc. can be used to fix the cable reel in the carriage to ensure its stability.
During transportation, the cable should be prevented from being exposed to direct sunlight and rain. If it is transported in the open air, a tarpaulin must be covered for protection. At the same time, it is necessary to prevent the cable from being mixed with corrosive substances and sharp objects to avoid corrosion or scratch of the cable.
The transport vehicle should drive smoothly, and try to avoid sudden braking and sharp turns to reduce the shaking of the cable reel. When loading and unloading cables, professional loading and unloading equipment such as forklifts should be used. Rough loading and unloading is strictly prohibited to prevent damage to the cable reel and cables.
(III) Shipment
Shipment Process
After the customer places an order, the customer service personnel will check the order information in the first time, including product specifications, quantity, receiving address, contact information, etc., to ensure that the information is accurate. After checking, the customer service personnel will transmit the order information to the warehouse.
After receiving the order, the warehouse will retrieve the corresponding cable products from the inventory according to the order information, count and inspect the appearance, and confirm that the products are in good condition and the packaging is complete. After the goods are prepared, the cables are transported to the shipping area for shipment.
The warehouse contacts the transport company, informs the goods information and shipping requirements, and arranges transport vehicles. When the transport vehicle arrives, the warehouse staff and the driver will go through the goods handover procedures together, load the cables onto the vehicle, and fill in the waybill and other relevant documents. After shipment, the customer service personnel will promptly inform the customer of the waybill number, the name of the transport company, the estimated arrival time and other information to facilitate the customer to track the logistics.
Shipment Time
When the inventory is sufficient, regular orders (such as less than 10 reels) can generally be shipped within 1-2 working days after the customer places the order. If the order quantity is large (such as more than 10 reels), it is necessary to prepare, sort and package the goods, and the shipment time will be extended to 2-3 working days.
If the customer has special requirements, such as customizing cables of special length, the production cycle will increase accordingly, and it usually takes 5-7 working days to complete the production and shipment. In case of special circumstances such as holidays and bad weather, the shipment time may be delayed, and the customer service personnel will communicate with the customer in advance to explain the situation and negotiate a new shipment time.
(IV) Samples
Sample Provision
To enable customers to better understand product quality and performance, the company provides sample services. Customers can put forward sample requirements to sales personnel and specify the specifications of the required samples. Samples of this model cable are generally provided free of charge, and the length of the samples is usually 1-2 meters, which can meet the customer's needs for checking the appearance, material and structure of the cable.
The material and process of the samples are exactly the same as those of mass-produced products, which can truly reflect the actual situation 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.
Sample Delivery
After the samples are prepared, the staff will package the samples, usually in a hard paper tube or sealed bag, to prevent the samples from being damaged during transportation. The sample specification, company name and contact information are marked on the package.
Samples are usually sent by express, and express companies with good service and fast speed, such as SF Express and Yuantong Express, are selected. After the samples are sent, the sales personnel will promptly inform the customer of the express waybill number, and the customer can query the logistics status of the samples through the express waybill number. Samples in domestic areas can generally be delivered within 1-3 days, and it may take 4-5 days in remote areas.
(V) After - sales Service
Quality Assurance
The company provides quality assurance for this cable product, with a warranty period of 18 months 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 aging and damage of the insulation layer, conductor breakage and other non-human factors), the company will provide customers with free repair or replacement services.
If the cable is damaged due to improper use by the customer (such as use beyond the rated voltage, wrong laying method, external impact, etc.), the company can provide repair services, but the corresponding repair fees and material fees must be charged.
After - sales Service Process
If a customer finds a problem with the cable during use, he can feedback through the company's customer service phone, email, online customer service and other channels. After receiving the feedback, the customer service personnel will record the customer information, product model, purchase time, problem description and other contents in detail, and arrange professional technical personnel to connect with the customer within 24 hours.
Technical personnel communicate with customers to further understand the problem, and if necessary, ask customers to provide photos or videos of the problem site. Technical personnel analyze and judge according to the known situation to determine the cause and responsibility of the problem.
If it is a product quality problem, the technical personnel will negotiate a solution (repair or replacement) with the customer and complete the relevant work within the agreed time. If the problem is caused by improper use by the customer, the technical personnel will inform the customer of the maintenance plan and cost, and carry out the maintenance after the customer agrees.
Technical Support
The company has a professional technical team to provide customers with all-round technical support. When customers purchase cables, technical personnel will recommend appropriate cable products for customers according to their use scenarios, power demand, etc., and provide relevant technical parameters and use suggestions.
During cable laying and installation, if customers encounter technical problems, they can consult technical personnel at any time. Technical personnel will provide detailed guidance, such as precautions during laying, control of bending radius, joint treatment methods
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