I. From the Perspective of the Product Itself
(I) Specification Parameters
16mm² Specification
The 16mm² specification of Nayy-J -O Al PVC PVC 0.6/1kv under
Ground Cable has a rated voltage of 0.6/1kv and is specially designed for underground low-voltage distribution scenarios. Its conductor cross-sectional area is 16mm², and it adopts a single-core or
Multi-Core structure (depending on actual application requirements), which can meet the needs of small and medium-power power transmission.
In terms of current-carrying capacity, when this specification of cable is laid in soil, the long-term allowable current-carrying capacity is approximately 80A, which can be adapted to scenarios with relatively small power loads such as residential community branches.
The insulation layer thickness is 1.0mm, and the sheath thickness is 1.2mm. This thickness design can not only ensure that the cable has good insulation performance and protection ability in the underground environment, but also prevent the cable from being too bulky, facilitating construction and laying.
The outer diameter of the cable is about 22mm, the static bending radius is not less than 10 times the outer diameter of the cable, and the dynamic bending radius is not less than 15 times the outer diameter of the cable. During underground laying, it can adapt to certain terrain changes and bending requirements.
25mm² Specification
This specification of cable also has a rated voltage of 0.6/1kv, with a conductor cross-sectional area of 25mm². When laid in soil, the long-term allowable current-carrying capacity is about 105A, which is a certain improvement compared with the 16mm² specification, and can meet the needs of slightly higher-power underground power transmission.
The insulation layer thickness is 1.2mm, and the sheath thickness is 1.4mm, which further enhances the insulation and protection performance of the cable to cope with more complex underground environments.
The outer diameter of the cable is about 26mm, the static bending radius is not less than 10 times the outer diameter of the cable, and the dynamic bending radius is not less than 15 times the outer diameter of the cable. During installation, the corresponding bending standards must be followed to avoid excessive bending affecting performance.
50mm² Specification
The 50mm² specification cable has a rated voltage of 0.6/1kv and a conductor cross-sectional area of 50mm². When laid in soil, the long-term allowable current-carrying capacity is about 160A, which is suitable for underground distribution scenarios with large power loads.
The insulation layer thickness is 1.4mm, and the sheath thickness is 1.6mm, which can provide more reliable insulation protection and mechanical protection for the cable, resisting various erosions and impacts in the underground environment.
The outer diameter of the cable is about 34mm, the static bending radius is not less than 12 times the outer diameter of the cable, and the dynamic bending radius is not less than 20 times the outer diameter of the cable, ensuring that the internal structure will not be damaged due to bending during laying.
70mm² Specification
This specification of cable has a rated voltage of 0.6/1kv and a conductor cross-sectional area of 70mm². When laid in soil, the long-term allowable current-carrying capacity is about 200A, which is the largest among the four specifications, and can meet the needs of high-power power transmission such as underground distribution in industrial plants.
The insulation layer thickness is 1.6mm, and the sheath thickness is 1.8mm, which has strong insulation performance and mechanical strength, and can adapt to more harsh underground environments.
The outer diameter of the cable is about 40mm, the static bending radius is not less than 12 times the outer diameter of the cable, and the dynamic bending radius is not less than 20 times the outer diameter of the cable, providing guarantee for the safe laying and long-term stable operation of the cable.
(II) Characteristic Uses
16mm² Specification
Residential community branches are the main application scenarios of the 16mm² specification cable. In residential communities, it is necessary to distribute electricity from the main distribution line to each building or unit, and the power load of the branch line is relatively small. This specification of cable has a moderate current-carrying capacity, and has good corrosion resistance and moisture resistance. Buried underground in the community, it can stably provide electricity for residents, meeting the daily electricity needs of families, such as lighting and household appliances.
In addition, some small public facilities' branch distribution, such as small parks, community activity centers, etc., are also suitable for using this specification of cable. It is easy to install and relatively low in cost, and can meet the basic power transmission needs of these places.
25mm² Specification
In the municipal pipe network power supply system, the 25mm² specification cable is widely used. The municipal pipe network includes supporting power supply for water supply, drainage, gas and other systems, as well as power transmission for public facilities such as road lighting and traffic lights. The power load in these scenarios is moderate, and the requirements for the reliability and environmental resistance of the cable are relatively high. This specification of cable can operate stably in the underground environment for a long time, ensuring the normal operation of municipal facilities.
At the same time, in the underground distribution of some small and medium-sized commercial areas, this specification of cable can also play an important role, providing stable power support for shops, office buildings, etc.
50mm² Specification
Underground distribution in industrial plants is a typical application scenario of the 50mm² specification cable. There are many production equipment in industrial plants, with large power loads, and the underground environment may have erosion factors such as oil stains and chemical substances. This specification of cable has a large current-carrying capacity, and has strong corrosion resistance and mechanical strength, which can adapt to the harsh underground environment of industrial plants, provide reliable power transmission for production equipment, and ensure the smooth progress of production.
In addition, the distribution systems of underground parking lots, underground shopping malls and other places in large public buildings also often use this specification of cable to meet the power needs of large power.
70mm² Specification
The 70mm² specification cable is mainly used for underground distribution of important equipment in large industrial plants, as well as some underground projects with high requirements for power transmission, such as outgoing cables of underground substations and underground power transmission of large data centers. The power load in these scenarios is large, and the requirements for the current-carrying capacity and stability of the cable are extremely high. This specification of cable can meet their needs and ensure the normal operation of key equipment.
In some large infrastructure constructions, such as the supporting underground distribution system of subways, this specification of cable can also provide stable power support, ensuring the safe and reliable operation of infrastructure.
(III) Material and Style
Conductor Material
The conductors of the four specifications of cables all use aluminum (Al).
Aluminum Conductors have the characteristics of small density and light weight, which can reduce the construction difficulty and reduce transportation and installation costs during underground laying. Although the conductivity of aluminum is slightly lower than that of copper, for the 0.6/1kv low-voltage distribution system, its conductive performance can fully meet the needs. Moreover, aluminum resources are abundant and the price is relatively low, which greatly reduces the overall cost of the cable, balancing economy and practicality.
Insulation Layer Material
The insulation layer is made of polyvinyl chloride (PVC). PVC material has good insulation performance, which can effectively block current and prevent electric leakage accidents. At the same time, PVC has excellent corrosion resistance and moisture resistance. In the underground environment, it can resist the erosion of moisture, microorganisms and some chemical substances in the soil, ensuring the long-term stability of the cable's insulation performance. In addition, PVC material is easy to process, has low cost, and is suitable for mass production.
Sheath Material
The sheath is also made of polyvinyl chloride (PVC), which is the same as the insulation layer material, further enhancing the protection performance of the cable. The
PVC Sheath has high mechanical strength, can withstand mechanical impacts, extrusion and other external forces during underground laying, and protect the internal conductor and insulation layer from damage. Moreover, the PVC sheath has good weather resistance, can adapt to temperature changes and various climate influences in the underground environment, and extend the service life of the cable.
Style Design
The four specifications of cables are all cylindrical in overall shape with a compact structure. The conductor is wrapped with a
PVC Insulation layer, and the insulation layer is wrapped with a PVC sheath to form a double-layer protection structure. The color of the cable is usually black, which has good dirt resistance and concealment, is not easy to be corroded and discolored in the underground environment, and can absorb heat, reducing the impact of temperature changes on the cable performance. The surface of the cable is smooth and flat, without obvious protrusions or depressions, which is convenient for reducing resistance and improving construction efficiency during underground pipe laying or direct burial.
The "-O" logo is a unique design of the cable, indicating that it has been structurally optimized or adopted special anti-corrosion treatment, which may include thickening of the sheath, adding anti-corrosion additives, etc., further enhancing the adaptability and durability of the cable in the underground environment.
(IV) Production Process
Conductor Production
First, the aluminum ingot is smelted to remove impurities, obtaining aluminum water that meets the purity requirements. Then, the aluminum water is cast into aluminum rods through a continuous casting process, and the diameter of the aluminum rods is adjusted according to the specifications of the
Cable Conductor. Next, the aluminum rod is drawn into
Aluminum Wires of the required diameter by a wire drawing process. During the wire drawing process, it is necessary to accurately control the drawing speed, temperature and lubrication conditions to ensure the dimensional accuracy and mechanical properties of the
Aluminum Wire. For cables of different specifications, a corresponding number of aluminum wires are twisted according to a certain twisting method. Twisting can improve the
Flexibility and filling coefficient of the conductor, reduce the skin effect, and ensure the conductive performance of the conductor.
Insulation Layer Extrusion
The extrusion molding process is used to wrap the PVC insulation layer around the conductor. First, PVC granular material is added to the hopper of the extruder. After being heated and melted, the molten PVC material is transported to the mold through the screw of the extruder. The size of the mold is accurately designed according to the cable specifications to ensure uniform thickness of the insulation layer. During the extrusion process, the extrusion temperature (generally between 150-180℃), extrusion speed and pressure are strictly controlled, so that the molten PVC material evenly coats the surface of the conductor to form a continuous and dense insulation layer. After extrusion, the insulation layer is cooled and solidified to set its shape.
Sheath Extrusion
A PVC sheath is extruded outside the insulation layer. PVC material is added to another extruder, heated and melted, and then evenly coated on the surface of the insulation layer through an extrusion mold. The extrusion parameters are controlled to ensure that the sheath has uniform thickness, a smooth surface, and is closely combined with the insulation layer without defects such as bubbles and impurities. Since the cable is used in the underground environment, the extrusion process of the sheath is more strict to ensure that it has sufficient mechanical strength and corrosion resistance. The special structure or anti-corrosion design corresponding to the "-O" logo is also realized in this link through specific molds or material formulas.
Quality Inspection
Strict quality inspection is carried out in each link of the production process. For the conductor, parameters such as its diameter, resistivity, and tensile strength are tested; for the insulation layer, properties such as its thickness, insulation resistance, and voltage resistance are tested; for the sheath, indicators such as its thickness, tensile strength, elongation at break, and corrosion resistance are tested. The finished cable also needs to undergo partial discharge tests, aging tests, environmental stress cracking resistance tests, etc., to ensure that the product meets the relevant standards and technical requirements of 0.6/1kv
Underground Cables. Only cables that pass all tests can leave the factory for sale.
II. From the Perspective of General Product Information
(I) Packaging
Packaging Materials
The four specifications of cables are all packaged with wooden cable reels or steel cable reels. For smaller specifications and shorter lengths of cables such as 16mm² and 25mm², wooden cable reels are usually used. Wooden cable reels have low cost and light weight, and are suitable for short-distance transportation and small-batch delivery. For larger specifications and longer lengths of cables such as 50mm² and 70mm², steel cable reels are mostly used. Steel cable reels have high strength and strong bearing capacity, can bear large weights and impacts during transportation, and are suitable for long-distance transportation and large-batch delivery.
Packaging Method
When packaging, the cable is neatly wound on the cable reel. During the winding process, it is necessary to ensure that the cable is arranged tightly and flatly, avoiding twisting, crossing and overlapping, so as to prevent the cable from being squeezed and worn during transportation and storage. The outermost layer of the cable is wrapped with a plastic film, which has good moisture-proof and dust-proof performance and can protect the cable from pollution by the external environment. For wooden cable reels, baffles are added on their sides to prevent the cable from slipping; the steel cable reel itself has a solid structure, and the baffles on the sides can effectively play a protective role. A shaft sleeve is installed at the central shaft hole of the cable reel to facilitate handling and loading/unloading with equipment such as forklifts and cranes.
Packaging Marks
Relevant product information is clearly and firmly marked on the side and end face of the cable reel, including product name (Nayy-J -O Al PVC PVC 0.6/1kv Underground Cable), specification parameters (16mm², 25mm², 50mm², 70mm²), length, rated voltage, implementation standard, production date, production batch number, manufacturer's name, address, contact information, etc. These marks not only facilitate users to identify product information when receiving and inspecting the cable, but also are conducive to product traceability and quality management.
(II) Transportation
Transportation Mode
Different transportation modes can be selected according to the transportation distance, quantity of cables and customer needs. For long-distance transportation with large quantities, railway transportation is a more suitable choice. Railway transportation has large transport capacity, low cost and stable transportation process, which can effectively ensure the safety of the cable. For medium and short-distance transportation, road transportation can be adopted. Road transportation has high flexibility and can realize door-to-door service, facilitating customers to receive goods. For urgent orders or small batches of sample transportation, car express transportation can also be used. Although the cost is relatively high, it can shorten the transportation time and ensure the timely delivery of goods.
Transportation Precautions
Before transportation, carefully check the packaging of the cable to ensure that the cable reel is intact, the cable is tightly wound, and the plastic film is tightly wrapped. During transportation, the cable reel must be placed horizontally, and tilting, inverting or stacking are strictly prohibited to prevent the cable reel from rolling and colliding, which may cause damage to the cable. The transport vehicle should drive smoothly, avoiding violent operations such as sudden braking and sharp turns, to reduce the shaking of the cable reel. At the same time, measures should be taken to prevent rain, sun and moisture. A rain cloth can be covered on the cable reel to avoid the cable being soaked by rain, exposed to the sun or damp, which may affect the performance of the cable. When loading and unloading the cable, special lifting equipment such as cranes and forklifts must be used. During loading and unloading, handle with care to avoid impact and damage to the cable and cable reel.
Transportation Fixation
To prevent the cable reel from moving and rolling during transportation, it is necessary to fix it firmly. Steel wire ropes, iron chains, etc. can be used to tightly fix the cable reel on the carriage of the transport vehicle. The fixed points should be selected at the solid parts of the cable reel, such as the flange of the steel reel or the reinforcing ribs of the wooden reel, to ensure reliable fixation. For long-distance transportation, buffer materials such as wooden boards and rubber pads can also be placed between the cable reels to reduce mutual collision and friction between the cable reels.
(III) Delivery
Delivery Process
After the customer places an order and makes payment, the sales department will promptly transmit the order information to the warehouse and production department. Warehouse personnel prepare goods according to the order information. For stock products, it is necessary to carefully check whether the specifications and quantity of the products are consistent with the order; for customized products, the production department organizes production according to the order requirements. After production is completed, the products are inspected by the quality inspection department and then transferred to the warehouse. After packaging the products, the warehouse personnel contact the transportation company to determine the transport vehicle, transportation route and transportation time. Before delivery, the delivery information, such as the name of the transportation company, license plate number, waybill number, estimated arrival time, etc., is promptly informed to the customer to facilitate the customer's preparation for receiving the goods.
Delivery Time
For regular specification cables in stock, delivery will generally be completed within 1-3 working days after receiving the customer's order and confirming payment. For cables that need to be produced according to the customer's special requirements, the delivery time will be determined according to the production cycle, usually 7-15 working days. The specific delivery time will be communicated and confirmed with the customer in advance, so that the customer can clearly understand the production progress and estimated delivery time of the goods.
Delivery Tracking
After the cable is delivered, the company will track the transportation status of the goods throughout the process. By maintaining close contact with the transportation company, timely obtain information such as the location and transportation progress of the goods. If there are abnormal situations during transportation, such as traffic jams, bad weather, etc., which cause transportation delays, the customer will be notified immediately, and active coordination with the transportation company will be made to try to shorten the delay time and
ensure that the goods can be delivered to the customer as soon as possible.
(IV) Samples
Sample Provision
To allow customers to better understand the quality, performance, and appearance of Nayy-J -O Al PVC PVC 0.6/1kv underground cables, the company can provide samples of the four specifications. Customers can choose samples of the corresponding specifications according to their own needs. The length of the samples is generally 1-2 meters, which can meet the customers' inspection of the conductor material, insulation layer and sheath quality, and structural design of the cable.
Sample Cost
The samples themselves are provided to customers free of charge, but customers need to bear the express fee for the samples. For large customers with clear cooperation intentions or long-term partners, the company will reduce or exempt the express fee for the samples according to the actual situation to promote cooperation between the two parties.
Sample Delivery
After receiving the customer's sample request, the company will prepare the samples within 1-2 working days and package them properly. During packaging, the specification parameters and other information will be clearly marked on the samples to prevent damage or confusion during transportation. Then, the samples will be sent to the customer via a reliable express method, and the express tracking number will be promptly informed to the customer to facilitate them to check the transportation status of the samples.
(V) After-sales Service
Quality Assurance
The company promises that the Nayy-J -O Al PVC PVC 0.6/1kv underground cables produced and sold comply with relevant national standards and industry norms, with a product quality guarantee period of 1-3 years. During the quality guarantee period, if the cable has quality problems caused by non-human factors, such as aging of the insulation layer, sheath damage, conductor breakage, etc., the company will provide customers with free repair or replacement services.
Technical Support
The company has a professional technical team to provide customers with comprehensive technical support. Customers can contact technical personnel at any time through phone calls, emails, online consultations, etc. when encountering any technical problems during the installation, laying, and use of the cable. Technical personnel will give detailed answers and professional guidance in a timely manner. For some complex technical issues, the company can arrange technical personnel to go to the site for guidance and assistance to ensure the installation quality and normal use of the cable.
Fault Handling
If customers find that the cable is faulty during use, they should notify the company in a timely manner. After receiving the notification, the company will respond within 24 hours, arrange professional personnel to communicate with the customer to understand the specific situation of the fault, analyze the cause according to the fault phenomenon, and formulate a solution. For faults that require on-site handling, technical personnel will be arranged to rush to the site for repair or replacement as soon as possible to minimize the losses caused by cable faults to customers.
Customer Feedback
The company attaches great importance to customers' feedback and has set up various customer feedback channels, such as customer service hotlines, emails, and online message boards. Any problems encountered or suggestions put forward by customers during the use of the product can be fed back to the company through these channels. The company will arrange special personnel to sort out, analyze, and handle customers' feedback and reply to customers within a specified time. At the same time, the company will continuously improve product quality and service levels according to customers' feedback to improve customer satisfaction.
In summary, the four specifications of Nayy-J -O Al PVC PVC 0.6/1kv underground cables, 16mm², 25mm², 50mm², and 70mm², have their own advantages in terms of specification parameters, characteristic uses, material styles, and production processes, and can meet the needs of different underground distribution scenarios. At the same time, perfect general information services such as packaging, transportation, delivery, samples, and after-sales provide customers with all-round guarantees, making it a reliable and cost-effective choice in underground low-voltage distribution systems.
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