35mm² Flexible Power Cable 450/750V Stranded Copper for Industrial Heating & Grounding

Detailed Introduction to 35mm² Flexible Power Cable 450/750V Stranded Copper Core for Industrial Heating & Grounding

I. From the Perspective of the Product Itself

1. Specification Parameters

• Wire Diameter Specification: The wire diameter of this cable is 35mm², which is determined through precise calculation and can meet the power transmission requirements of industrial heating equipment and grounding systems. The 35mm² wire diameter ensures a large current-carrying capacity while maintaining a certain degree of Flexibility, making it suitable for application in various industrial scenarios.

• Rated Voltage: The rated voltage is 450/750V, where 450V is the voltage between conductors, and 750V is the voltage between the conductor and the ground. This voltage level complies with the electricity standards for low-voltage equipment in the industrial field and can be safely used for power supply of industrial heating equipment and grounding systems.

• Conductor Structure: The conductor adopts a multi-strand Stranded Copper Core structure with 61 strands, and the diameter of each single wire is 0.8mm. This multi-strand stranded design increases the surface area of the conductor, which helps improve heat dissipation performance. At the same time, it enhances the flexibility of the cable, enabling it to be flexibly bent and laid in narrow spaces, and better withstand mechanical stress and vibration.

• Current-Carrying Capacity: At an ambient temperature of 30℃, the current-carrying capacity of this cable can reach 110A. This current-carrying capacity can meet the power transmission needs of high-power heating elements, such as industrial electric furnaces above 20kW, ensuring that the equipment can work stably when operating at high current.

• Insulation Layer Parameters: The insulation layer has a uniform thickness of not less than 1.2mm and is made of cross-linked polyethylene (XLPE) or silicone rubber material with a temperature resistance level of 105℃. Among them, the silicone rubber insulated version can work stably in the extreme temperature range of -60℃ to 180℃, and the XLPE Insulated version has excellent performance in moisture resistance and chemical corrosion resistance. The insulation layer has passed strict voltage withstand tests, with no breakdown when subjected to an AC voltage of 1500V for 5 minutes, which can effectively block current leakage and ensure electrical safety.

• Standard Compliance: The product complies with domestic and foreign standards such as GB/T 5023 and IEC 60228, and has passed various tests such as weather resistance, ozone resistance, and flame retardancy (optional UL94 V-0 grade), ensuring that its performance meets industry specifications and usage requirements.

2. Characteristic Uses

• Power Supply for Industrial Heating Equipment: In the field of industrial heating, this cable is an ideal choice for power supply. It can be used for wiring of high-temperature equipment such as industrial electric furnaces, heating furnaces, and hot air blowers. Due to its good temperature resistance and current-carrying capacity, it can stably transmit power to these equipment, ensuring the smooth progress of the heating process. For example, in large industrial electric furnaces, the cable can withstand the influence of high-temperature environments, continuously provide sufficient power for the electric furnace, and ensure that the electric furnace reaches the required heating temperature.

• Grounding System: In the grounding system, the low-impedance characteristic of this cable can quickly conduct fault current, ensuring the safety of equipment and personnel. Cooperated with the yellow-green 双色 insulation layer (special color for grounding), it is easy to identify and distinguish, ensuring the reliability of the grounding loop. In scenarios such as grounding of electrical equipment in factories and grounding of buildings, this cable can effectively introduce fault current into the ground, avoiding electric shock accidents and equipment damage.

• Power Supply for Mobile Equipment: For some industrial heating equipment that needs to be moved frequently, such as mobile hot air blowers and portable heating devices, the flexibility of this cable allows it to bend flexibly with the movement of the equipment, without being damaged due to frequent movement, ensuring the normal power supply of the equipment.

• Laying in Narrow Spaces: In places such as industrial workshops, the equipment layout is compact, and the wiring space is narrow. This cable can be directly passed through restricted spaces such as equipment interlayers and pipeline gaps without complex bending tools, reducing construction difficulty and improving wiring efficiency. For example, in the equipment gaps of large production lines, this cable can be easily laid to provide power for related equipment.

3. Material and Style

• Conductor Material: The conductor is made of high-purity electrolytic copper with a purity of more than 99.95%. High-purity electrolytic copper has excellent electrical conductivity, which can reduce resistance loss, reduce energy waste during current transmission, and improve power transmission efficiency. At the same time, electrolytic copper is soft, which is convenient for multi-strand stranding processing, ensuring the quality and performance stability of the conductor.

• Insulation Layer Material: There are two choices for the insulation layer: cross-linked polyethylene (XLPE) and silicone rubber. XLPE material has good insulation performance, aging resistance, and mechanical strength, with outstanding moisture resistance and chemical corrosion resistance, suitable for use in humid or slightly corrosive industrial environments. Silicone rubber material has better high and low temperature resistance, and can maintain stable insulation performance in the extreme temperature range of -60℃ to 180℃, suitable for wiring scenarios of high-temperature equipment.

• Outer Sheath Material: The outer sheath is made of oil-resistant polyvinyl chloride (PVC) or neoprene. The oil-resistant PVC Sheath has good wear resistance, ultraviolet resistance, and oil resistance, which can protect the internal structure of the cable from damage by the external environment and extend the service life of the cable in industrial workshops and other scenarios. The neoprene sheath has better weather resistance and elasticity, suitable for use in outdoor equipment and other environments.

• Color Style: The cable provides a variety of color options, including basic colors such as black and gray, and yellow-green 双色 (special for grounding). The basic colors are convenient for distinguishing from other cables in the industrial system, and the yellow-green 双色 clearly identifies its function for the grounding system, facilitating construction personnel to identify and manage, and reducing the risk of misoperation.

4. Production Process

• Copper Wire Drawing: First, high-purity electrolytic copper ingots are made into copper rods through smelting, casting, and other processes, and then the copper rods are drawn into fine copper wires with a diameter of 0.8mm through a wire drawing machine. During the drawing process, the drawing speed, temperature, and lubrication conditions are strictly controlled to ensure that the diameter of the copper wire is uniform, the surface is smooth, and defects such as cracks and scratches are avoided, ensuring the quality of the copper wire.

• Conductor Stranding: 61 drawn copper wires are stranded according to a specific stranding direction and pitch to form a 35mm² conductor. During the stranding process, precision stranding equipment is used to ensure that each copper wire is evenly stressed and tightly stranded, so as to improve the electrical conductivity and mechanical strength of the conductor. The size of the stranding pitch is optimally designed to enhance the flexibility and fatigue resistance of the conductor.

• Insulation Layer Extrusion: Corresponding extrusion processes are selected according to different Insulation Materials. For the XLPE insulation layer, after heating and melting the XLPE material, it is evenly coated on the surface of the Stranded Conductor through an extruder to form an insulation layer with a thickness of not less than 1.2mm. For the silicone rubber insulation layer, special extrusion equipment and processes are used to ensure that the silicone rubber material is evenly coated on the conductor and tightly combined with the conductor. During the extrusion process, the extrusion temperature, pressure, and speed are strictly controlled to ensure that the insulation layer has a uniform thickness and a smooth surface.

• Cross-Linking Treatment (for XLPE Insulation): For the insulation layer made of XLPE material, cross-linking treatment is required. The XLPE molecular structure is cross-linked by heating to form a three-dimensional network structure, thereby improving the temperature resistance, aging resistance, and mechanical properties of XLPE. The temperature and time of cross-linking treatment are strictly controlled in accordance with process requirements to ensure that the cross-linking degree meets the standards.

• Sheath Extrusion: The outer sheath is extruded outside the insulation layer. After heating and melting the oil-resistant PVC or neoprene material, it is evenly coated on the surface of the insulation layer through an extruder to form an outer protection. During the extrusion process, the extrusion parameters are controlled to ensure that the sheath has a uniform thickness, good sealing performance, and is tightly combined with the insulation layer, playing a good protective role.

• Quality Inspection: Strict quality inspection is carried out in all links of the production process. The diameter, purity, and surface quality of the copper wire are inspected; the stranding quality and resistance of the conductor are tested; the thickness, voltage withstand performance, and temperature resistance performance of the insulation layer are inspected; the thickness and wear resistance of the outer sheath are checked. The finished cable also needs to undergo overall performance tests, such as testing of conductor resistance, insulation resistance, partial discharge, flame retardancy, and other indicators, to ensure that each batch of products has stable and reliable quality.

II. From the Perspective of General Product Information

1. Packaging

• Packaging Method: The cable is packaged in a coiled manner, with a conventional length of 100 meters per coil, and can also be custom-cut according to customer needs. When coiling, the cable is neatly wound on a sturdy reel. The reel can be made of wood or steel, selected according to the weight of the cable and transportation requirements. The size of the reel is designed to ensure that the cable is not excessively squeezed or stretched during winding, protecting the Structure and Performance of the cable.

• Packaging Materials: The reel is made of high-strength wood or steel, which has sufficient bearing capacity and can protect the cable from damage during transportation and storage. The outer layer of the cable is wrapped with a layer of plastic film to play a moisture-proof and dust-proof role, avoiding contamination of the cable. For exported products or products transported over long distances, wooden boxes are also used for reinforced packaging to further protect the cable.

• Identification Information: Each reel is affixed with a clear identification label, which contains information such as product name, specification parameters (wire diameter 35mm², rated voltage 450/750V, etc.), execution standards, production batch number, production date, shelf life, manufacturer's name, address, and contact information. This information is convenient for users to identify the basic situation of the product and is also conducive to the traceability of product quality.

2. Transportation

• Transportation Methods: According to the order quantity, transportation distance, and customer requirements, different transportation methods can be selected. For small batches and short-distance transportation, automobile transportation is adopted, 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 can be selected. Railway transportation has a large carrying capacity and good stability, suitable for large-scale cable transportation; long-distance road transportation can cover a wider area and can directly reach some remote areas. For exported products, sea or air transportation is adopted, 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 are 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; air transportation is faster, usually 1-3 days, but the cost is relatively high. 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.

3. Delivery

• 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 color, the delivery time will be determined according to the production cycle. Generally speaking, the production cycle of customized products is 7-15 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.

4. Samples

• 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 length of the sample is usually 1-5 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.

5. After-Sales Service

• Quality Assurance: The manufacturer promises that the produced 35mm² Flexible Power Cable meets relevant industry standards and international standards, with a product warranty period of 10 years. Within the warranty period, if the cable fails to function normally due to its own quality problems (such as conductor breakage, insulation layer damage, substandard performance, etc.), the manufacturer will provide free repair or replacement services. For faults caused by non-product quality issues, such as man-made damage or improper installation, the manufacturer can also provide repair services but will charge corresponding cost fees.

• 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.