35mm² Green Yellow Earth Wire Flexible Stranded Copper

Wire Diameter Specification: The total cross-sectional area of the 35mm² green-yellow earth wire is 35mm². This specification is precisely designed according to the grounding requirements of electrical systems and can meet the fault current conduction needs of scenarios such as large industrial equipment and power distribution systems. Its conductor is stranded by 70 high-purity electrolytic Copper Wires with a diameter of 0.8mm. This multi-strand stranded structure greatly improves the Flexibility of the cable while ensuring the cross-sectional area.

Rated Current-Carrying Capacity: At an ambient temperature of 30℃, the current-carrying capacity of this earth wire can reach 135A. The high current-carrying capacity ensures that when equipment fails, a large amount of fault current can be quickly conducted into the ground, avoiding electric shock to personnel or damage to equipment caused by electrified equipment shells, and providing an important guarantee for the safe operation of the electrical system.

Insulation Layer Parameters: The insulation layer has a uniform thickness of not less than 1.2mm and is made of polyvinyl chloride (PVC) or cross-linked polyethylene (XLPE) material with a temperature resistance level of 105℃. Among them, PVC material has good mechanical properties and insulation performance, and the cost is relatively low; XLPE material has more advantages in terms of temperature resistance, aging resistance and chemical stability, and can adapt to harsher environments. The volume resistivity of the insulation layer is ≥1×10¹⁴Ω・cm, with excellent insulation performance, which can effectively prevent the grounding loop from accidentally contacting other conductors.

Voltage Withstand Performance: The insulation layer has passed strict voltage withstand tests, with no breakdown phenomenon when subjected to AC 2000V voltage for 5 minutes, ensuring safety in complex electrical environments and avoiding grounding faults caused by insulation failure.

Mechanical Properties: The earth wire has excellent mechanical properties, with a tensile strength of ≥12MPa and an elongation at break of ≥150%. This enables the cable to withstand certain stretching and friction during wiring, and is not prone to conductor breakage or insulation layer damage, ensuring the integrity and reliability of the grounding system.

Bending Radius: The minimum bending radius is 6 times the outer diameter of the cable. The small bending radius makes the cable have good flexibility, which can easily adapt to various complex wiring environments, especially in equipment-intensive areas and narrow spaces, reducing construction difficulty and improving installation efficiency.

Flame Retardant Performance: The flame retardant performance reaches UL 94 V-2 level. When encountering an open flame, it can inhibit combustion and reduce smoke generation, reducing safety hazards in case of fire and gaining time for personnel evacuation and fire fighting.

Temperature Resistance Range: It can maintain stable performance in the temperature range of -40℃ to 105℃. Whether in the cold winter in the north or in high-temperature industrial plants, it can work normally, adapting to the use needs of different regions and environments.

Service Life: The service life is as long as 15 years or more. Thanks to its high-quality material selection and exquisite production technology, it can resist the erosion of various environmental factors during long-term use, maintain stable performance, and reduce the cost of replacement and maintenance.

Implementation Standards: It strictly follows relevant domestic and foreign standards such as GB 50169 and IEC 60445. These standards clearly stipulate the materials, performance, testing methods of the Ground Wire, ensuring the quality and safety of the product, and enabling it to be widely used in various domestic and foreign electrical systems.

Equipment Grounding in Industrial Plants: In industrial plants, large motors, transformers and other equipment may have leakage due to insulation damage during operation. The 35mm² green-yellow earth wire can connect the shells of these equipment to the ground. When the equipment fails, the fault current can be quickly conducted into the ground through the earth wire, thereby reducing the ground voltage of the equipment shell and avoiding electric shock accidents when operators touch the equipment. For example, in the rolling mill workshop of a steel plant, the shell grounding of large rolling mill motors is inseparable from this earth wire, which provides an important guarantee for the safe operation of the motor and the life safety of operators.

Grounding Trunk Line in Commercial Buildings: Commercial buildings such as large shopping malls and office buildings have complex electrical systems, and the grounding system is crucial. This earth wire can be used to connect the main grounding terminal box of commercial buildings with the grounding electrode, constructing the grounding trunk line of the entire building. Through this trunk line, the grounding branches of various electrical equipment in the building are connected to form a unified grounding network, ensuring that the grounding resistance of all equipment meets the requirements and improving the safety and stability of the building's electrical system.

Grounding Grid in Power Substations: Power substations are important components of the power system, and the performance of their grounding grids directly affects the safe operation of the power system. The 35mm² green-yellow earth wire can be used for the grounding grid wiring of substations, connecting various equipment and structures in the substation with the grounding electrode to form an efficient fault current shunting network. When a short-circuit fault occurs, a large amount of fault current can quickly spread to the ground through the grounding grid, reducing the ground potential rise and protecting the safety of substation equipment and personnel.

Safety Grounding of New Energy Charging Piles: With the popularization of new energy vehicles, the number of new energy charging piles is increasing. If there is a leakage in the charging pile during charging, it may be dangerous to the charging personnel. This earth wire can be used for the safety grounding of the charging pile, connecting the metal shell of the charging pile to the ground. When leakage occurs, the leakage current is conducted into the ground through the earth wire, triggering the action of the leakage protection device to cut off the power supply, ensuring the safety of personnel during charging.

Laying in Narrow Spaces: Due to its good flexibility and small bending radius, the earth wire is particularly suitable for laying in equipment-intensive areas and narrow spaces. For example, in the internal grounding of switch cabinets, the space inside the switch cabinet is small and there are many equipment. The earth wire needs to be shuttled and connected, and its flexible characteristics enable it to easily complete the wiring; in the grounding branch in the bridge, it can also be flexibly arranged, simplifying the construction process and improving the installation efficiency of the grounding system.

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, reduce energy loss during current transmission, and ensure that fault current can be quickly and smoothly conducted into the ground. At the same time, electrolytic copper has good ductility and toughness, which is convenient for wire drawing and stranding processing, ensuring the quality and performance stability of the conductor.

Insulation Layer Material: There are two choices for the insulation layer: polyvinyl chloride (PVC) and cross-linked polyethylene (XLPE). PVC material has good insulation performance, mechanical strength and processing performance, and the price is relatively low, suitable for general industrial and commercial environments; after cross-linking treatment, XLPE material forms a three-dimensional network structure in its molecular structure, which has higher temperature resistance, aging resistance and chemical stability, and can be used in harsher environments, such as high temperature, humidity and places with chemical corrosion.

Color Style: The insulation layer adopts a green-yellow two-color design, which is the color standard for dedicated Grounding Wires specified in international electrical specifications. The combination of green and yellow makes it highly recognizable, which can be quickly distinguished from phase wires and neutral wires, avoiding misconnection during construction and maintenance, and greatly improving the reliability and safety of the grounding system. This clear color identification also facilitates electrical personnel to inspect and maintain the system.

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 thin copper wires with a diameter of 0.8mm through a wire drawing machine. During the wire drawing process, it is necessary to strictly control the drawing speed, temperature and lubrication conditions to ensure that the diameter of the copper wire is uniform, the surface is smooth, and avoid cracks, scratches and other defects. The drawn copper wire also needs to be annealed to eliminate internal stress and improve the flexibility and conductivity of the copper wire.

Conductor Stranding: 70 strands of annealed 0.8mm copper wires are stranded according to a specific stranding direction and pitch to form a conductor with a total cross-sectional area of 35mm². The stranding process is carried out on special stranding equipment, which can accurately control the stranding pitch and tension to ensure that each strand of copper wire is evenly stressed and tightly stranded. A reasonable stranding pitch can not only enhance the flexibility of the conductor, but also improve the mechanical strength and fatigue resistance of the conductor, making it not easy to break in bending and vibration environments.

Insulation Layer Extrusion: According to the selected Insulation Material (PVC or XLPE), the corresponding extrusion process is used to coat the insulation layer on the surface of the Stranded Conductor. For the PVC Insulation layer, after heating and melting the PVC particles, it is evenly coated on the conductor through the die of the extruder to form an insulation layer with a thickness of not less than 1.2mm; for the XLPE insulation layer, it is necessary to first heat and melt the XLPE material, then perform extrusion coating, and then carry out cross-linking treatment. By heating, the XLPE molecules undergo a cross-linking reaction to form a three-dimensional network structure, so as to improve its temperature resistance and mechanical properties. During the extrusion process, it is necessary to strictly control the extrusion temperature, pressure and speed to ensure that the insulation layer has a uniform thickness, a smooth surface and is closely combined with the conductor.

Printing Identification: After the extrusion of the insulation layer is completed, relevant identification information such as wire diameter specification, implementation standard, production batch number, production date, etc. is printed on the cable surface through a printing machine. This identification information is clear and firm, facilitating product identification, traceability and quality control.

Quality Inspection: Strict quality inspection is required in all links of the production process. The diameter, purity, tensile strength of the copper wire are inspected; the cross-sectional area and resistance of the stranded conductor are tested; the thickness, voltage withstand performance, temperature resistance performance of the insulation layer are inspected. The finished cable also needs to undergo overall performance tests, such as conductor resistance test, insulation resistance test, flame retardant performance test, vibration resistance test, damp heat resistance test, etc., to ensure that each batch of products meets relevant standards and requirements. Only products that pass all quality inspections can leave the factory.

Packaging Method: The 35mm² green-yellow earth wire is usually packaged in reels. There are two types of reels: wooden reels and steel reels. The appropriate reel is selected according to the length and weight of the cable. Generally, the length of each reel of cable is 100 meters, and different lengths can also be customized according to the special needs of customers. The cable is neatly wound on the reel to avoid extrusion, distortion or wear of the cable during the packaging process.

Packaging Materials: The reel is made of high-strength wood or steel, with sufficient bearing capacity, which can protect the cable from damage during transportation and storage. The wood is selected from solid wood that is hard and not easy to deform, which is processed after drying to prevent the reel from getting damp and mildewy; the steel is made of high-quality low-carbon steel, which has good corrosion resistance and strength after welding, spraying and other processes. After the cable is wound, the outer side of the reel will be wrapped with a layer of plastic film to play a role in moisture-proof and dust-proof, and protect the surface of the cable from pollution.

Identification Information: Clear identification labels will be pasted on the side or end face of the reel. The labels include product name (35mm² green-yellow earth wire), specification parameters (35mm², temperature resistance level 105℃, etc.), implementation standard, production batch number, production date, length, weight, manufacturer name, address, contact information and other information. This identification information is convenient for users to quickly understand the basic situation of the product, and is also conducive to product quality traceability and after-sales service.

Protective Measures: In order to further protect the cable, baffles will be installed at both ends of the reel to prevent the cable from slipping off the reel during transportation and storage. For export products or products transported over long distances, wooden boxes will also be used for reinforced packaging to enhance the compressive capacity and impact resistance of the packaging, ensuring the safety of the cable during transportation.

Transportation Methods: Different transportation methods can be selected according to the transportation distance, order quantity and customer needs. For short-distance transportation (such as within 100 kilometers), road transportation is usually adopted, using trucks to directly deliver the cable to the customer's designated location. This transportation method is flexible and convenient, and can quickly respond to customer needs. For medium and long-distance transportation (such as 100-1000 kilometers), road transportation is also the main method, and large freight vehicles can be selected for transportation to improve transportation efficiency. For long-distance transportation (such as more than 1000 kilometers) or export products, railway transportation or sea transportation can be selected. Railway transportation has the characteristics of large carrying capacity and good stability, and is suitable for the transportation of large quantities of cables; sea transportation is suitable for long-distance international transportation, with relatively low cost but long transportation time.

Transportation Precautions: During transportation, the cable should be protected from severe collision, extrusion, exposure to the sun and rain. When loading cables, the reels should be placed stably with a certain gap between them to avoid mutual friction and collision. For wooden reels, prevent the reels from getting damp and deformed; for steel reels, avoid the reels from rusting. The compartment of the transport vehicle should be kept clean and dry, and the cable should be avoided from contact with oil, chemical substances, etc. to prevent the cable from being corroded. During transportation, the cable should be fixed to prevent the reel from rolling or shifting during the vehicle's travel. For long-distance transportation, it is also necessary to regularly check the condition of the cable to ensure that it is intact.

Loading and Unloading Requirements: When loading and unloading cables, special lifting equipment (such as cranes, forklifts, etc.) should be used, and rough loading and unloading is strictly prohibited. When hoisting the reel, appropriate slings should be used, which should match the center hole of the reel to avoid damage to the reel due to uneven force. During loading and unloading, it should be lifted and placed gently to prevent the cable from being impacted and vibrated, and to avoid damage to the insulation layer and conductor.

Delivery Time: For the in-stock 35mm² green-yellow earth wire, delivery will be arranged within 24-48 hours after the customer places an order and confirms the order information. If the cable specification required by the customer is special or the quantity is large, production scheduling is required, and the delivery time will be determined according to the production cycle. Generally, the production cycle of conventional specifications of cables is 5-7 days, and the production cycle of special specifications of cables may be extended to 10-15 days. The manufacturer will communicate the production progress and estimated delivery time with the customer in a timely manner after the order is confirmed, so that the customer can prepare for receipt.

Delivery Process: After the customer places an order, the sales staff will enter the order information into the company's management system, and the system will automatically transmit the order information to the warehouse and production department. The warehouse department first reviews the order to confirm whether there is stock. If there is stock, the warehouse management personnel will prepare the goods according to the order requirements, check the specification, model, quantity, length and other information of the cable to ensure consistency with the order. After the goods are prepared, outbound inspection is carried out to check whether the packaging of the cable is intact, whether the identification is clear, and whether the product has quality problems. After passing the inspection, arrange transport vehicles for loading, and go through relevant transportation procedures (such as waybill, insurance, etc.). At the same time, the delivery information (such as transportation method, license plate number, driver's contact information, estimated arrival time, etc.) is fed back to the customer in a timely manner, facilitating the customer to track the transportation status of the goods.

Delivery Notification: After the cable is shipped, the manufacturer will send a delivery notification to the customer via SMS, phone call or email. The notification includes the order number, product information, transportation information, estimated arrival time and other contents. After receiving the notification, the customer can prepare for receipt in advance, such as arranging personnel to receive and preparing storage space.

Sample Provision: In order to allow 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 inspection needs for the appearance, size, flexibility, insulation layer thickness, color and other aspects of the cable. The customer only needs to bear the transportation cost of the sample. For long-term cooperative customers or customers with large order intentions, the manufacturer can bear the transportation cost of the sample.

Sample Application Process: Customers can apply for samples from the manufacturer by phone, email, online customer service, etc., stating the specification, quantity, purpose and other information of the required sample. After receiving the sample application, the manufacturer will review it within 1-2 working days. After approval, arrange the preparation and delivery of the sample. After the sample is shipped, the manufacturer will promptly inform the customer of the express tracking number to facilitate the customer to query the transportation status of the sample.

Sample Feedback: After receiving the sample, the customer can conduct various performance tests and evaluations on the sample. If satisfied with the sample, they can further negotiate with the manufacturer on mass purchase matters, and the manufacturer will provide a detailed quotation and supply plan based on the customer's needs. If the customer has any questions or suggestions about the sample, the manufacturer will arrange professional technical personnel to communicate with the customer, answer the customer's questions, and improve and optimize according to the customer's feedback to meet the customer's needs.

Quality Assurance: The manufacturer promises that the 35mm² green-yellow earth wire produced meets relevant national standards and industry standards, and the product quality is reliable. The product has a warranty period of 10 years. During the warranty period, if the cable cannot be used normally due to its own quality problems (such as conductor breakage, insulation layer damage, performance failure, etc.), the manufacturer will provide free repair or replacement services. For cable damage caused by human factors (such as improper installation, intentional damage, etc.), the manufacturer can provide repair services, but the corresponding cost will be charged.

After-Sales Response: Customers can contact the after-sales department through the manufacturer's after-sales hotline, email, online customer service, etc. if they encounter any problems during use. After-sales personnel will respond to the customer's needs within 24 hours, understand the specific situation of the problem, and give preliminary solutions. For simple problems, customers can be guided to solve them by phone or email; for complex problems, the manufacturer will arrange professional technical personnel to go to the site for processing to ensure that the problem is solved in a timely manner.

Technical Support: The manufacturer provides professional technical support services for customers, including cable selection guidance, installation suggestions, grounding system design consultation, etc. Customers can consult the manufacturer's technical personnel about technical problems encountered during installation and use, and the technical personnel will provide professional solutions according to the customer's actual situation to ensure that the cable can be used correctly and safely.

Customer Feedback Handling: The manufacturer attaches great importance to customers' feedback and has established a sound customer feedback handling mechanism. For the opinions and suggestions put forward by customers, the manufacturer will conduct serious analysis and research, adopt reasonable suggestions in a timely manner, and continuously improve product quality and service level. At the same time, the manufacturer will conduct regular return visits to customers to understand the use of cables and customer satisfaction, and establish long-term and stable cooperative relations.