Low Cost Aluminum Power Cable 50mm² 70mm² 145mm² XLPE Insulated

Wire Diameter Specifications: This series of low-cost aluminum Power Cables includes three wire diameter specifications: 50mm², 70mm², and 145mm². The 50mm² wire diameter is relatively moderate and can meet power transmission needs within a certain range; the 70mm² wire diameter is slightly larger, capable of handling higher-power power transmission; the 145mm² wire diameter is larger, mainly used in high-current and large-scale power transmission scenarios. These three wire diameter specifications have been accurately calculated to adapt to different power transmission scales and environments.

Conductor Structure: All adopt a multi-strand stranded Aluminum Conductor structure. The 50mm² conductor is formed by stranding multiple small-diameter Aluminum Wires, usually 37 Aluminum Wires with a diameter of 1.33mm; the 70mm² conductor is generally composed of 37 aluminum wires with a diameter of 1.68mm; the 145mm² conductor is made by stranding 61 aluminum wires with a diameter of 1.99mm. The multi-strand stranded structure greatly enhances the Flexibility of the cable, making it less likely to be damaged during long-distance transportation, bending and laying, and easy to install in complex environments.

Current-Carrying Capacity: There are significant differences in the current-carrying capacity of cables with different wire diameters. The continuous current-carrying capacity of the 50mm² cable is approximately 150A. At an ambient temperature of 25℃, it can stably transmit power of the corresponding power, suitable for scenarios such as branch power supply in industrial parks; the 70mm² Cable has a current-carrying capacity of about 185A, which can meet medium-scale power transmission needs such as outgoing circuits of small and medium-sized substations; the 145mm² cable has a current-carrying capacity of more than 300A, capable of undertaking high-current transmission tasks such as main lines of urban distribution networks or power connections of large industrial equipment.

Insulation Layer Parameters: The insulation layer is made of cross-linked polyethylene (XLPE) material, and its thickness varies according to the wire diameter and rated voltage. For 50mm² and 70mm² cables with a rated voltage of 10kV, the insulation layer thickness is usually not less than 3.4mm; for 145mm² cables with a rated voltage of 35kV, the insulation layer thickness is not less than 7.0mm. The XLPE insulation layer has a small dielectric loss tangent value, which is not greater than 0.0025 under normal operating conditions (at 90℃), and high insulation resistance, which can effectively block current and ensure the safety of power transmission.

Rated Voltage: The rated voltage of the product covers medium and high voltage levels such as 10kV and 35kV. 50mm² and 70mm² cables are mainly suitable for power transmission at 10kV voltage level; 145mm² cables can be used for power transmission at 35kV voltage level. These rated voltages comply with national power industry standards and international general specifications, and can meet the requirements of medium and high-voltage power transmission.

Temperature Resistance Performance: The XLPE insulation layer has excellent temperature resistance performance. Its long-term operating temperature can reach 90℃, and in case of a short circuit, the withstand temperature is as high as 250℃, and it can maintain stable performance for a certain period at this temperature without being quickly damaged due to a sudden temperature rise, ensuring the safety of power transmission in abnormal situations such as sudden short circuits.

50mm² Specification: Suitable for branch power supply in industrial parks, it can provide stable power support for various small and medium-sized enterprises in the park, meeting the needs of their production equipment and office electricity. At the same time, it can also be used in branch lines of urban distribution networks, playing an important connecting role in urban power distribution to ensure that power can be smoothly transmitted to various regions. In addition, in the internal power distribution system of some large buildings, 50mm² cables can be used as branches of the main power distribution lines to supply power to different regions and equipment.

70mm² Specification: Can meet the needs of outgoing circuits of small and medium-sized substations, transmitting the power output by the substation to various power consumption areas. In the workshop power distribution of large factories, 70mm² cables can provide power for large production equipment in the workshop, ensuring the normal progress of production. At the same time, it is also applicable to main power distribution lines of some important public facilities in cities, such as large shopping malls and hospitals, to ensure stable and reliable power supply in these places.

145mm² Specification: Mainly used to undertake the main lines of urban distribution networks, it is an important channel for urban power transmission, capable of efficiently transmitting power from substations to all corners of the city. In the connection lines from power plants to substations, 145mm² cables can realize large-capacity power transmission, ensuring the stable operation of the power system. In addition, in new energy projects, such as collector lines of wind power and photovoltaic Power Stations, 145mm² cables can centrally transmit scattered electric energy, improving energy utilization efficiency.

Common Application Scenarios: All three specifications of cables are widely used in municipal engineering, such as urban road lighting lines and power supporting facilities for underground pipe networks. In rural power grid upgrading and transformation projects, due to their low-cost characteristics, they can meet the power transmission needs of rural areas within a limited budget and improve rural power consumption conditions. At the same time, in some temporary large-scale power projects, such as temporary power supply lines for large-scale events, appropriate specifications of cables can be selected for temporary laying according to power needs.

Conductor Material: The conductor is made of high-purity aluminum material with a purity of more than 99.5%. High-purity aluminum has good electrical conductivity. Although its conductivity is slightly lower than that of copper, it has obvious advantages in cost, especially in large-section cables, with extremely high cost performance. Aluminum material also has the characteristics of light weight, making the overall weight of the cable relatively light, which is convenient for transportation and installation.

Insulation Layer Material: The insulation layer is made of cross-linked polyethylene (XLPE) material. After cross-linking treatment, the molecular structure of XLPE material forms a three-dimensional network structure, making it have excellent temperature resistance, aging resistance and mechanical properties. Compared with traditional polyvinyl chloride (PVC) Insulation Materials, XLPE materials are not easy to soften and deform at high temperatures, have strong chemical stability, can resist the erosion of various chemical substances, and greatly extend the service life of the cable.

Outer Protection Material: All three specifications of cables use Steel Tape armoring or polyethylene sheathing as outer protection. Steel tape armoring has high mechanical strength and can effectively protect the cable from damage by external mechanical forces, such as stretching, extrusion and impact, and is suitable for scenarios such as buried laying that are easily affected by external forces. Polyethylene sheathing has good corrosion resistance and moisture resistance, can protect the internal structure of the cable from moisture, acid and alkali substances in the soil, etc., and also has certain anti-rat and anti-ant properties, reducing the impact of biological damage on the cable.

Style Design: The cable has an overall circular structure with a smooth and flat surface. This design is not only convenient for cable winding, storage and transportation, but also can reduce friction with other objects during laying, reducing the risk of damage. The design of multi-strand Stranded Conductors and multi-layer structures (conductor, insulation layer, outer protection) enables the cable to have good overall performance and work stably in various complex environments.

Aluminum Wire Drawing: First, high-purity aluminum ingots are made into aluminum rods through smelting, casting and other processes, and then the aluminum rods are drawn into aluminum wires of the required diameter through a wire drawing machine. During the drawing process, it is necessary to strictly control the drawing speed, temperature and lubrication conditions to ensure that the diameter of the aluminum wire is uniform, the surface is smooth, and defects such as cracks and scratches are avoided. The diameter of aluminum wires required for cables of different specifications is different and needs to be adjusted according to specific specifications.

Conductor Stranding: Multiple drawn aluminum wires are stranded according to a certain stranding direction and pitch to form a conductor. During the stranding process, precision stranding equipment is used to ensure that the aluminum wires are evenly distributed and tightly stranded to improve the electrical conductivity and mechanical strength of the conductor. The size of the stranding pitch will affect the flexibility and stability of the conductor, and needs to be accurately set according to the specifications and use requirements of the cable.

Insulation Layer Extrusion and Cross-Linking: An extruder is used to evenly coat XLPE material on the surface of the stranded conductor to form an insulation layer. During the extrusion process, it is necessary to strictly control the extrusion temperature, pressure and speed to ensure that the insulation layer has uniform thickness, smooth surface and is closely combined with the conductor. After that, the cable coated with the insulation layer is cross-linked, usually by dry cross-linking or warm water cross-linking, so that the molecular structure of the XLPE material undergoes a cross-linking reaction to form a stable three-dimensional network structure, thereby obtaining excellent performance.

Outer Protection Production: According to the use scenario and requirements of the cable, steel tape armoring or polyethylene sheathing is made outside the insulation layer. For steel tape armoring, the steel tape is wound around the cable insulation layer at a certain angle and welded or 咬合处理 to ensure that the armoring layer is firm and reliable. The polyethylene sheathing is formed by extrusion on the outer layer of the cable through an extruder, and the extrusion parameters also need to be controlled to ensure that the sheathing has uniform thickness and good sealing performance.

Quality Inspection: Strict quality inspection is carried out in all links of the production process. In the aluminum wire drawing stage, indicators such as the diameter and tensile strength of the aluminum wire are tested; in the conductor stranding stage, parameters such as the stranding quality and outer diameter of the conductor are checked; in the insulation layer extrusion and cross-linking stage, properties such as the thickness, cross-linking degree and dielectric loss of the insulation layer are tested; in the outer protection production stage, the firmness of the armoring layer, the thickness and sealing performance of the sheathing are inspected. The finished cable also needs to undergo overall performance tests, such as pressure resistance test, partial discharge test, thermal extension test, aging test, etc., to ensure that each batch of products meets relevant standards and quality requirements.

Packaging Method: For the convenience of transportation and storage, all three specifications of cables adopt a coil packaging method. Under normal circumstances, the length of each coil of cable is 500 meters, and different lengths such as 200 meters and 1000 meters can also be customized according to the special requirements of customers. When coiling, the cable is neatly wound on a steel or wooden reel. The size of the reel is designed according to the diameter and length of the cable to ensure that the cable will not be excessively squeezed or stretched during winding, protecting the Structure and Performance of the cable.

Packaging Materials: The reel is made of high-strength steel or wooden materials. Steel reels have strong bearing capacity, are firm and durable, and are suitable for long-distance transportation and packaging of large cables; wooden reels have relatively low cost, light weight, are easy to handle, and are suitable for medium and short-distance transportation and packaging of small and medium-sized cables. On the outside of the reel, a layer of plastic film or linen is wrapped to play a moisture-proof and dust-proof role, avoiding contamination and damage to the cable during transportation and storage. At the same time, firm baffles are installed on the reel to prevent the cable from falling off the reel.

Identification Information: Each reel is affixed with a detailed identification label, which contains information such as the product name, specification parameters (such as wire diameter, rated voltage, length, etc.), execution standards, production batch number, production date, shelf life, manufacturer's name, address, and contact information. In addition, information such as the weight, gross weight, and net weight of the cable will also be marked to facilitate the management of transportation and warehousing links. These identification information are clear and easy for users to quickly identify the basic situation of the product, and also conducive to product quality traceability.

Transportation Methods: According to the order quantity, cable specifications and the customer's geographical location, different transportation methods can be selected. For small batches and short-distance transportation, automobile transportation can be used, such as direct truck transportation, which is flexible and convenient, and can quickly deliver products to customers. For large batches and long-distance transportation, railway transportation or long-distance road transportation is usually used. Railway transportation has large carrying capacity and good stability, suitable for large-scale cable transportation; long-distance road transportation can cover a wider range and can directly reach some remote areas. For exported products, sea transportation is also used, and the products are transported through containers to ensure that the products arrive at the destination safely.

Transportation Precautions: During transportation, the cable should be avoided from severe collision, extrusion, exposure to the sun and rain. When loading cables, a certain distance should be maintained between reels to avoid mutual friction and collision, and wooden pads or partitions can be used for isolation. For long-distance transportation, the reels should be firmly fixed on the transport vehicle to prevent displacement, rolling or falling during transportation. The transport vehicle should be kept clean and dry to avoid contamination of the cable by oil, chemical substances, etc. During loading and unloading, special hoisting equipment such as cranes and forklifts should be used, and rough loading and unloading is strictly prohibited to prevent reel deformation or cable damage. At the same time, attention should be paid to the stacking direction of the cable to avoid excessive inversion or inclination of the reel.

Transportation Time: The transportation time varies according to the transportation method and distance. Automobile transportation can usually be delivered within 1-2 days for short distances (such as within 100 kilometers); medium and long-distance road transportation (such as 500-1000 kilometers) generally takes 3-5 days; railway transportation takes a relatively long time, usually 5-10 days depending on the distance; sea transportation takes even longer, which may take 15-30 days or more depending on the destination. Before transportation, the manufacturer will communicate with the transportation company to estimate the transportation time and inform the customer in time so that the customer can prepare for receipt.

Delivery Time: For products in stock, the manufacturer will arrange delivery within 48 hours after the customer places an order. If the product needs to be customized according to the customer's special requirements, such as specific length and special packaging, the delivery time will be determined according to the production cycle. Generally speaking, the production cycle of customized products is 10-20 days, and the specific time will be adjusted according to the complexity of customization and the order quantity. After the order is confirmed, the manufacturer will timely communicate the production progress and expected delivery time with the customer, so that the customer can understand the production situation of the product.

Delivery Process: After the customer places an order, the sales staff will enter the order information into the system and transfer it to the production department and warehouse. If production is needed, the production department will organize production according to the order requirements; the warehouse will check the spot products, including specifications, quantity, packaging, etc. After the products are ready, the warehouse staff will conduct outgoing inspection to ensure that the product quality is qualified and the packaging is intact. After passing the inspection, arrange transport vehicles for loading, and go through relevant transportation procedures such as waybills and insurance policies. At the same time, a logistics tracking number is generated and fed back to the customer in time by the sales staff, facilitating the customer to check the transportation status of the goods.

Delivery Notification: After the goods are shipped, the manufacturer will send a delivery notification to the customer via SMS, email or phone call, which includes information such as the logistics tracking number, transportation method, estimated arrival time, and contact information of the carrier. Let the customer prepare for receipt in advance, such as arranging personnel to receive the goods and preparing a storage site, to ensure that the goods can be delivered and signed for smoothly.

Sample Provision: In order for customers to fully understand the quality and performance of the product before mass purchase, the manufacturer can provide free samples. The specifications and length of the samples can be provided according to the customer's requirements. Usually, the sample length is 1-3 meters, which can meet the customer's testing needs for the appearance, size, flexibility, insulation layer thickness, etc. of the cable. Customers only need to bear the transportation cost of the samples. For long-term cooperative customers or potential customers with large orders, the manufacturer can also bear the transportation cost of the samples.

Sample Application Process: Customers can apply for samples from the manufacturer by phone, email, online customer service, etc., stating the specifications, quantity, purpose and other information of the required samples. After receiving the application, the manufacturer will review the application within 2-3 working days, and arrange the preparation and delivery of samples after approval. After sending the samples, the express tracking number of the samples will be informed to the customer, facilitating the customer to check the transportation status of the samples.

Sample Feedback: After receiving the samples, customers can conduct various performance tests and evaluations on the samples. If satisfied with the samples, they can further negotiate with the manufacturer on mass purchase matters, and the manufacturer will provide detailed quotations and supply plans according to the customer's needs. If the customer has any questions or suggestions about the samples, the manufacturer will arrange professional technical personnel to communicate with the customer, answer the customer's questions, and make improvements and optimizations according to the customer's feedback to meet the customer's needs.

Quality Assurance: The manufacturer promises that the produced low-cost Aluminum Power Cables meet national

After-Sales Service Process: If customers encounter any problems during use, they can call the manufacturer's after-sales service hotline or contact the after-sales service department via email, online customer service, etc. at any time. After-sales service personnel will respond to customers' needs within 24 hours and understand the specific situation of the problem. For simple problems, they will provide customers with technical guidance and solutions via phone or email; for complex problems that require on-site maintenance, the manufacturer will arrange professional technical personnel to arrive at the site for handling within 48 hours (except for remote areas) to ensure that the problem is solved in a timely manner.

Customer Feedback Handling: The manufacturer attaches great importance to customers' feedback and has established special customer feedback channels and handling mechanisms. Customers can put forward their opinions and suggestions through the after-sales service hotline, email, online messages, etc. The manufacturer will classify, sort out, analyze and study customers' feedback. For reasonable opinions and suggestions, they will be promptly adopted and applied to product production and services to continuously improve product quality and service levels. At the same time, the manufacturer will conduct regular return visits to customers to understand the use of products and customer satisfaction, and establish long-term and stable cooperative relationships.