Conductor Material: The conductor of the cable is made of high-purity copper with a purity of more than 99.9%. High-purity copper has excellent electrical conductivity, which can reduce resistance, reduce energy loss during power transmission, and improve transmission efficiency. At the same time, pure copper has good ductility and toughness, so that the cable can adapt to a certain degree of bending and stretching during laying and installation, facilitating construction operations. Moreover, pure copper has good chemical stability and is not easy to be corroded, which can ensure the long-term stability of the conductive performance of the conductor.

Insulation layer material: The insulation layer is made of halogen-free materials, which do not contain halogen elements such as chlorine and bromine, and belong to environmentally friendly materials. When burned, it will not release toxic halogen gases, but only produce a small amount of low-toxic smoke, which greatly reduces the harm in fire. At the same time, halogen-free Insulation Materials also have good temperature resistance. The long-term service temperature can reach 90℃, and the maximum temperature can reach 250℃ in case of short circuit, which can maintain stable insulation performance in a higher temperature environment. In addition, it has high mechanical strength, good impact resistance and tear resistance, and can effectively protect the conductor from external mechanical damage.

Sheath material: The sheath is also made of halogen-free materials, which matches the insulation layer material, further enhancing the environmental protection and safety performance of the cable. The halogen-free sheath has good corrosion resistance, which can resist the erosion of chemical substances, moisture, sunlight and other external factors in the soil, and prolong the service life of the cable. At the same time, the sheath also has high mechanical strength, which can protect the internal structure of the cable from external extrusion, collision and other damages, ensuring the stable overall performance of the cable.

Style design: The cable is cylindrical as a whole with a compact structure. The four cores are twisted together, and the outside is wrapped with a halogen-free sheath to form a whole. From the appearance, the color of the cable is usually black, which has good dirt resistance and concealment, and can maintain a good appearance in different laying environments. At the same time, black is also helpful to absorb heat and reduce the impact of temperature changes on cable performance. The surface of the cable is smooth and flat, without obvious defects and bulges, which is convenient for passing through pipes, bridges and other facilities during laying.

Conductor production: First, high-purity copper ingots are smelted to remove impurities, so as to obtain copper water that meets the purity requirements. Then, the copper water is cast into copper rods through continuous casting process, and the diameter of the copper rods is adjusted according to the specifications of the Cable Conductor. Next, the copper rod is drawn into Copper Wires of the required diameter by wire drawing process. During the wire drawing process, it is necessary to control the wire drawing speed, temperature and lubrication conditions to ensure the dimensional accuracy and mechanical properties of the copper wire. For 120mm² and 70mm² conductors, multiple copper 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 improve the conductive performance.

Insulation layer extrusion: The extrusion molding process is used to wrap the halogen-free insulation layer outside each conductor. First, halogen-free insulation material particles are added into the hopper of the extruder. After being heated and melted, the molten material is transported to the mold through the screw of the extruder. The size of the mold is designed according to the specifications of the cable to ensure the uniform thickness of the insulation layer. During the extrusion process, it is necessary to accurately control the extrusion temperature (usually between 130-190℃), extrusion speed and pressure, so that the molten halogen-free material can evenly coat the surface of the conductor to form a continuous insulation layer. After extrusion, the insulation layer is cooled and solidified to set its shape. The extrusion process of halogen-free insulation materials has high requirements, and various parameters need to be strictly controlled to ensure the quality of the insulation layer.

Cabling process: Three 120mm² insulated phase wires and one 70mm² insulated neutral wire are cabled. First, the four cores are twisted according to a certain twisting direction and pitch. The size of the twisting pitch will affect the flexibility and structural stability of the cable. During the twisting process, in order to ensure the roundness and filling rate of the cable, halogen-free filling materials, such as halogen-free ropes, will be filled between the four cores. The filling material can also play a role in buffering and protecting the cores, reducing mutual friction and extrusion between the cores during laying and use.

Sheath extrusion: A halogen-free sheath is extruded on the outer layer of the cabled cable. The sheath extrusion process is similar to the insulation layer extrusion. The halogen-free sheath material is heated and melted, and then evenly coated on the outer layer of the cabled cable through the extruder mold. Control the extrusion parameters to ensure that the thickness of the sheath is uniform, the surface is smooth, and it is closely combined with the internal structure without defects such as bubbles and impurities. The extrusion of the halogen-free sheath can further enhance the protective performance of the cable and improve the overall strength and corrosion resistance of the cable.

Quality inspection: Strict quality inspection shall be carried out in each link of the production process. For the conductor, its diameter, resistivity, tensile strength and other parameters are tested; for the insulation layer, its thickness, insulation resistance, voltage resistance, combustion performance, etc. are tested, especially to check whether its halogen content meets the halogen-free standard; for the cabling and sheath links, their appearance, size, roundness, mechanical properties, etc. are tested. The finished cable also needs to undergo partial discharge test, aging test, tensile test, etc. to ensure that the product meets the relevant standards and technical requirements. Only the cables that pass all tests can leave the factory for sale.

Packaging materials: Freetox Halogen-Free N2xoh 0.6/1kV 3X120+1X70 multipolar cable is usually packaged with wooden cable reels or steel cable reels. Wooden cable reels are made of high-quality hardwood, which has certain strength and toughness, can bear the weight of the cable, and has relatively low cost, so it is suitable for transportation and storage in general occasions. Steel cable reels are made of steel by welding, which have higher strength and stronger bearing capacity, and are suitable for long-distance transportation, packaging of large-length cables and multiple turnover uses.

Packaging method: The cable is neatly wound on the cable reel. During winding, it is necessary to ensure that the cable is arranged tightly and flatly without distortion, crossing and overlapping, so as to prevent the cable from being damaged during transportation and storage. A layer of plastic film is wrapped around the outer layer of the cable, which has the functions of moisture-proof and dust-proof, and can protect the cable from pollution by the external environment. For wooden cable reels, baffles are added on the side of the cable reel to prevent the cable from sliding off from the side. A shaft sleeve is installed at the central shaft hole of the cable reel to facilitate the handling and installation of the cable reel. At the same time, the end of the cable is fixed on the cable reel to avoid cable loosening.

Packaging marks: The relevant information of the product is clearly marked on the side and end face of the cable reel, including product name, model specification (Freetox Halogen-Free N2xoh 0.6/1kV 3X120+1X70), length, rated voltage, execution standard, production date, production batch number, manufacturer's name, address, contact information, etc. These marks should be clear and firm, not easy to fall off, so as to facilitate users to identify and check product information, and also conducive to product traceability and management.

Transportation mode: Different transportation modes can be selected according to the quantity of cables, transportation distance and customer requirements. Road transportation has the characteristics of high flexibility and door-to-door service, which is suitable for medium and short-distance transportation and small-batch cable transportation. Railway transportation has large transport capacity, low cost and good stability, which is suitable for long-distance transportation and large-batch cable transportation. For urgent orders or small batches of samples, air transportation can also be used to shorten the transportation time, but the cost of air transportation is relatively high.

Transportation precautions: Before transportation, check the packaging of the cable to ensure that the packaging is intact and firm, and the cable reel is not damaged. During transportation, the cable reel should be placed horizontally to avoid tilting, inverting or stacking, so as to prevent the cable reel from rolling and colliding, which may cause damage to the cable. The transport vehicle should drive smoothly, avoid violent actions such as sudden braking and sharp turning, and reduce the shaking of the cable reel. At the same time, measures should be taken to prevent rain, sun and moisture, so as to avoid the cable being soaked by rain, exposed to the sun or damp. When loading and unloading cables, special lifting equipment, such as cranes and forklifts, should be used. During loading and unloading, light loading and unloading should be carried out to avoid impact and damage to the cable and cable reel.

Transportation fixation: In order to prevent the cable reel from moving and rolling during transportation, it is necessary to fix it. Steel wire ropes, iron chains, etc. can be used to 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 to ensure firm and reliable fixation. For long-distance transportation, buffer materials, such as wooden boards and rubber pads, can be placed between the cable reels to reduce mutual collision.

Delivery process: After the customer places an order and pays, the sales department will transmit the order information to the warehouse and production department. Warehouse personnel prepare goods according to the order information. If they are stock products, they need to check whether the model specification and quantity of the products are consistent with the order; if they are customized products, after the production department completes the production, the quality inspection department will inspect them, and then transfer them to the warehouse after passing the inspection. After packaging the products, the warehouse personnel contact the transportation company to determine the transport vehicle 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 informed to the customer to facilitate the customer to prepare for receiving the goods.

Delivery time: For the cables of this model in stock, delivery is generally completed within 1-3 working days after receiving the order and confirming payment. If it is a cable that needs to be produced according to the special requirements of customers, 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 to ensure that the customer knows the progress of the goods.

Delivery tracking: After the cable is delivered, the company will track the transportation status of the goods. Keep close contact with the transportation company to timely understand the location and transportation progress of the goods. If there are abnormal situations during transportation, such as traffic jams and weather effects, which lead to transportation delays, the customer will be informed in a timely manner, and active coordination will be made to solve the problem to ensure that the goods can be delivered to the customer as soon as possible.

Sample provision: In order to enable customers to better understand the quality and performance of Freetox Halogen-Free N2xoh 0.6/1kV 3X120+1X70 multipolar cable, the company can provide samples for customers. Customers can apply for samples according to their own needs. The length of the sample is generally 1-2 meters, which can meet the customer's inspection of the appearance, structure, material, halogen-free characteristics, etc. of the cable.

Sample cost: The sample itself is provided free of charge, but the customer needs to bear the express fee of the sample. For large customers with clear cooperation intention or long-term partners, the company can reduce or exempt the express fee of the sample according to the actual situation to promote the cooperation.

Sample delivery: After receiving the customer's sample demand, the company will prepare the sample within 1-2 working days and properly package the sample to prevent damage during transportation. The model specification of the sample will be marked on the package, and then it will be sent to the customer by a reliable express method. The express tracking number will be promptly informed to the customer to facilitate the customer to check the transportation status of the sample.

Quality assurance: The company promises that the Freetox Halogen-Free N2xoh 0.6/1kV 3X120+1X70 multipolar 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, conductor breakage, sheath damage, etc., the company will provide free repair or replacement services for customers.

Technical support: The company has a professional technical team to provide customers with comprehensive technical support. If customers encounter technical problems during the installation and laying of cables, they can consult at any time by phone, email, etc., and the technical personnel will give timely answers and guidance. For complex technical problems, the company can arrange technical personnel to go to the site for guidance and assistance to ensure the installation quality 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 notice, the company will respond within 24 hours, arrange professional personnel to understand the fault situation, and formulate a solution. For faults that need on-site handling, personnel will be arranged to rush to the site for repair or replacement as soon as possible to minimize the customer's losses.

Customer feedback: The company attaches great importance to customers' feedback and has set up special customer feedback channels, such as customer service phone, email, online message, etc. Customers can feedback any problems or suggestions encountered during the use of the product through these channels. The company will timely handle and reply to customers' feedback, and continuously improve product quality and service level according to customers' feedback.