I. From the Perspective of the Product Itself
(I) Specification Parameters
Conductor Specifications
The conductor of the H07z-K LSZH cable (25mm²) is made of multi-strand stranded
Copper Wires, consisting of 84 copper wires with a diameter of 0.6mm. Through precise calculation and arrangement, the cross-sectional area of the conductor reaches 25mm². This multi-strand stranded design endows the conductor with excellent
Flexibility, enabling it to easily handle various bending and pipe-passing needs in industrial installations.
The purity of the
Copper Conductor is as high as 99.95% or more, which makes its conductivity extremely excellent. At 20°C, the DC resistance of the conductor does not exceed 0.73Ω/km, which is much lower than the industry standard. It can effectively reduce energy loss during current transmission and ensure the efficient operation of industrial equipment. Meanwhile, the breaking force of the conductor is not less than 12kN, with strong mechanical strength, which can withstand slight stretching and vibration during installation and use.
Insulation Layer and Sheath Specifications
Both the insulation layer and the sheath are made of low smoke zero halogen (LSZH) materials. The thickness of the insulation layer is 1.2mm, and the thickness of the sheath is 1.4mm. This thickness design not only provides good insulation performance but also effectively protects the conductor from the external environment.
This material has excellent temperature resistance, with a long-term operating temperature range of -40°C to 90°C, and can withstand high temperatures of 105°C for a short time, which can adapt to large temperature changes in industrial environments. In addition, the withstand voltage strength of the insulation layer and the sheath is not less than 10kV/mm. When used under the rated voltage of 450/750V, it can ensure the safety and stability of power transmission.
Overall Specifications
The overall diameter of the cable (including the insulation layer and sheath) is 12.5mm, and the weight per kilometer is about 380kg. This size and weight make the cable more convenient during transportation, installation, and storage, and also meet the requirements of industrial places for cable space occupation.
In terms of current-carrying capacity, when the cable is laid in air with an ambient temperature of 30°C, the current-carrying capacity is about 85A; when laid underground with a soil temperature of 25°C, the current-carrying capacity is about 95A. Sufficient current-carrying capacity ensures that the cable can provide stable power support for industrial equipment.
Environmental Protection and Safety Parameters
The cable is fully compliant with IEC 60754-1 and IEC 61034 standards. Among them, the release amount of halogen acid gas is ≤5mg/g, which is much lower than the standard limit, and can effectively reduce the generation of toxic gases in case of fire; the light transmittance of smoke density is ≥60%, which can maintain good visibility in case of fire, buying time for personnel evacuation and fire rescue.
In addition, the flame retardant performance of the cable meets the requirements of class B bunched combustion test in GB/T 18380.3-2008. Under the specified test conditions, the combustion spread length of the cable does not exceed 2.5m, and it can self-extinguish within a certain time, greatly reducing the risk of fire spread.
(II) Characteristic Applications
Automobile Manufacturing Workshop
In automobile manufacturing workshops, various high-power equipment such as welding equipment and assembly machinery need stable power supply. The current-carrying capacity of the H07z-K LSZH cable (25mm²) can meet the power needs of these equipment, and its low smoke zero halogen characteristics are particularly important in such an environment with dense personnel and numerous equipment. In case of fire, it will not release a large amount of toxic gases and thick smoke, which can reduce harm to workers and damage to equipment, providing guarantee for the safe production of the workshop.
At the same time, there is a lot of oil pollution in the workshop, and the oil resistance of the cable enables it to work stably for a long time in such an environment, and it is not easy to have performance degradation due to oil erosion.
Chemical Plant
There are various chemical reagents and corrosive gases in chemical plants, which have extremely high requirements on the chemical corrosion resistance of cables. The LSZH material of the H07z-K LSZH cable (25mm²) has good chemical corrosion resistance, which can resist the erosion of common chemical reagents and ensure the normal operation of the cable.
High-temperature environments may exist in the production process of the factory, and the temperature resistance of the cable enables it to work stably under such conditions. Moreover, chemical plants have extremely strict safety requirements, and the flame retardant performance and environmental protection characteristics of the cable meet the safety standards of the factory, which can reduce fire risks and environmental pollution.
Data Center Computer Room
The data center computer room is an important information processing center, which stores a large number of servers and network equipment, and these equipment need continuous and stable power supply. The high conductivity of the H07z-K LSZH cable (25mm²) can ensure efficient power transmission, reduce energy loss, and ensure the normal operation of the equipment.
The computer room is enclosed with dense personnel. In case of fire, the low smoke zero halogen cable can reduce the generation of thick smoke and toxic gases, buying time for personnel evacuation and equipment rescue. Its flame retardant performance can also reduce the damage of fire to the computer room equipment and protect important data and information.
Metallurgical Production Line
High temperature and dust will be generated during metallurgical production. The temperature resistance and dustproof performance of the H07z-K LSZH cable (25mm²) enable it to work normally in such harsh environments. The cable has high mechanical strength, which can withstand vibration and impact during the operation of the production line, ensuring continuous power supply.
The equipment on the metallurgical production line has high power, and the current-carrying capacity of the cable can meet the power needs of the equipment, ensuring the continuous and stable production of the production line. At the same time, its environmental protection characteristics also meet the requirements of the metallurgical industry for environmental protection.
Outdoor Industrial Areas
In some outdoor industrial areas, such as power supply for open-pit mining equipment and temporary power supply for large construction sites, the ultraviolet resistance of the H07z-K LSZH cable (25mm²) enables it to be used in outdoor environments without additional protection, resisting aging caused by direct sunlight and prolonging the service life of the cable.
Outdoor environments may encounter wind and rain. The insulation layer and sheath of the cable can effectively prevent moisture from infiltrating, ensuring the insulation performance of the cable and the safety of power transmission.
(III) Material and Style
Conductor Material
The conductor is made of high-purity electrolytic copper, which has been processed by electrolytic refining technology to remove impurities, with a purity of more than 99.95%. This high-purity copper has excellent conductivity, which can reduce energy loss during current transmission and improve power transmission efficiency.
At the same time, electrolytic copper has good ductility and plasticity, which is convenient for multi-strand stranding processing, ensuring that the
Stranded Conductor has a compact and uniform structure, and improving the mechanical strength and flexibility of the conductor.
Insulation Layer and Sheath Material
Both the insulation layer and the sheath are made of low smoke zero halogen (LSZH) materials, which are mainly composed of polyolefins, flame retardants, etc., and do not contain halogens (such as chlorine, bromine, etc.). Compared with traditional PVC materials, LSZH materials do not release toxic hydrogen halide gases when burned, and produce little smoke, with good environmental protection and safety performance.
This material also has good weather resistance, oil resistance, and chemical corrosion resistance, and can adapt to different industrial environments. Its mechanical properties are also excellent, with certain tensile strength and elongation at break, which can withstand external forces during installation and use.
Style Design
The cable has a black appearance, with a smooth and flat surface, and no obvious bubbles, cracks, bulges, or other defects. The black appearance makes it not easy to get dirty in industrial environments, which is convenient for maintenance and management.
The structure of the cable is reasonably designed, and the conductor, insulation layer, and sheath are closely combined with good integrity. During wiring, there will be no delamination, cracking, etc., which can ensure the stable performance of the cable. In addition, the length of the cable can be customized according to the user's needs, with common lengths of 100 meters, 200 meters, 500 meters, etc., to meet the needs of different industrial installation scenarios.
(IV) Production Process
Conductor Stranding Process
First, the copper wires are strictly screened and inspected to ensure that the diameter, purity, and other indicators of the copper wires meet the requirements. Then, 84 copper wires with a diameter of 0.6mm are put into the stranding machine and stranded according to a certain stranding pitch and direction. The stranding pitch is controlled between 30-40mm, which can ensure that the flexibility and mechanical strength of the conductor reach the best state.
During the stranding process, by precisely controlling the rotation speed and tension of the stranding machine, each copper wire is evenly stressed to avoid copper wire breakage, looseness, etc. After stranding, the conductor is subject to appearance inspection and size measurement to ensure that the cross-sectional area and roundness of the conductor meet the standard requirements. At the same time, the DC resistance test of the conductor will also be carried out to ensure that its conductivity meets the standard.
Insulation Layer Extrusion Process
A special extruder is used for extrusion of the insulation layer. First, the LSZH
Insulation Material is dried to remove moisture in the material to prevent bubbles during extrusion. Then, the dried material is added to the hopper of the extruder. After being heated, melted, and plasticized in the extruder, it is evenly extruded and coated on the surface of the conductor through a mold to form an insulation layer with a thickness of 1.2mm.
During the extrusion process, the extrusion temperature is strictly controlled between 160-180°C, and the extrusion speed is matched with the traction speed to ensure the uniform thickness of the insulation layer. The extruded cable is cooled in a cooling water tank to quickly solidify and form the insulation layer. After cooling, the insulation layer is subject to appearance inspection, thickness measurement, and voltage resistance test to ensure that the quality of the insulation layer meets the requirements.
Sheath Extrusion Process
The sheath extrusion process is similar to the insulation layer extrusion process, but the molds and materials used are different. After the LSZH sheath material is dried, it is added to another extruder. After being heated, melted, and plasticized, it is extruded and coated on the conductor that has been coated with the insulation layer to form a sheath with a thickness of 1.4mm.
During the extrusion process, the extrusion temperature is controlled between 170-190°C to ensure that the sheath material is closely combined with the insulation layer. The extruded cable is cooled again in a cooling water tank, and then subjected to appearance inspection, thickness measurement, and mechanical performance tests, such as tensile strength and elongation at break, to ensure that the quality of the sheath meets the standard.
Finished Product Inspection Process
Finished product inspection is the last process to ensure cable quality. First, a comprehensive inspection of the cable's appearance is carried out, including whether the surface is smooth, whether there are bubbles, cracks, bulges, and other defects, and whether the color is uniform. Then, the overall diameter of the cable, the thickness of the insulation layer, the thickness of the sheath, and other dimensions are measured to ensure that they meet the standard requirements.
Electrical performance inspection includes voltage resistance test, insulation resistance test, etc. In the voltage resistance test, the cable is put into water, and a voltage of 1500V is applied between the conductor of the cable and the water for 1 minute. It is qualified if no breakdown occurs. The insulation resistance test uses an insulation resistance tester to measure the insulation resistance of the cable under a voltage of 500V, which should be not less than 100MΩ·km.
In addition, flame retardant performance test, halogen acid gas release test, and smoke density test will be carried out on the cable to ensure that the cable meets the requirements of IEC 60754-1 and IEC 61034 standards. Only cables that pass all inspection items can be judged as qualified products and allowed to leave the factory.
II. From the Perspective of General Product Information
(I) Packaging
Packaging Materials
For cables with lengths of 100 meters and 200 meters, plastic reels are used for packaging. The plastic reels are made of high-strength polyethylene material, which has the characteristics of compression resistance, impact resistance, corrosion resistance, etc., and can effectively protect the cables from damage during transportation and storage. The diameter of the reel depends on the length of the cable. The diameter of the 100-meter reel is 600mm, and the diameter of the 200-meter reel is 800mm.
For cables with a length of 500 meters, wooden reels are used for packaging. The wooden reels are made of high-quality pine, which has been dried and anti-corrosion treated, with high strength and good stability. Both sides of the reel are equipped with metal flanges, which are convenient for handling and fixing the cable.
Whether it is a plastic reel or a wooden reel, after the cable is wound, the reel and the cable will be wrapped with a plastic film as a whole. The thickness of the plastic film is not less than 0.05mm to play a role in moisture-proof and dust-proof. Outside the plastic film, a paper protective cover is also put on, which is printed with relevant product information, such as product name, specification, length, manufacturer, etc.
Packaging Methods
First, the cable is neatly wound on the reel, and appropriate tension is maintained during winding to avoid loose or excessive stretching of the cable. After winding, the end of the cable is fixed on the reel with tape to prevent the cable from loosening.
Then, the reel and cable are wrapped tightly with plastic film to ensure no gaps to prevent moisture and dust from entering. For wooden reels, buffer materials such as foam boards will be added to the edges and corners to reduce collision and impact during transportation.
Finally, a clear label is pasted on the outside of the package, indicating the product name, specification, length, production date, production batch number, implementation standard, manufacturer's name, address, contact information, etc. For exported products, English labels and relevant certification marks will be added.
Packaging Labels
The packaging labels are printed with wear-resistant and water-resistant ink to ensure that they are not easy to blur or fall off during transportation and storage. The label is prominently placed, usually on the side of the reel and the front of the protective cover.
In addition to the basic information of the product, the label content also includes transportation and storage precautions, such as "handle with care", "moisture-proof and sun-proof", "keep away from fire source", etc. These labels can remind transportation and storage personnel to handle the cable correctly to ensure that the quality of the cable is not affected.
(II) Transportation
Transportation Methods
According to the transportation distance and customer needs, different transportation methods can be selected. For domestic short-distance transportation (distance within 500 kilometers), road transportation is usually adopted, using van trucks. The van truck has good sealing and protection performance, which can effectively protect the cable from the external environment, and the transportation is flexible and fast, which can deliver the goods to the customer in time.
For long-distance transportation or large quantities of goods, railway transportation can be used. Railway transportation has large capacity, low cost, and good stability, and is suitable for long-distance transportation. During transportation, the cable reels are fixed on the cargo space of the railway freight car to prevent the reels from moving and colliding.
For exported products, sea transportation is mainly used. The cables are loaded into containers, and the specifications of the containers depend on the quantity and size of the goods. Although sea transportation takes a long time, it has large capacity and low cost, which can meet the needs of large-scale exports. During the container loading process, the placement of cables is reasonably arranged to ensure that the goods are stable and avoid damage during transportation.
Transportation Precautions
During transportation, the cable should be avoided from severe impact, extrusion, and exposure to the sun. When loading goods, the cable reels should be placed neatly, and avoid stacking too high to prevent the bottom cables from being crushed. For wooden reels, attention should be paid to protecting their edges and flanges to avoid collision and deformation.
Moisture-proof measures should be taken during transportation, especially when transporting in the rainy season or humid environment, to ensure that the packaging is intact and prevent the cable from getting damp. At the same time, the cable should be avoided from being exposed to the sun for a long time to prevent aging and deterioration of the sheath and insulation layer.
Transport vehicles or ships should be kept clean, dry, and free of corrosive substances. During transportation, the packaging of the cable should be checked regularly. If the packaging is damaged or the cable is damaged, remedial measures should be taken in time. For exported products, it is also necessary to comply with relevant international trade transportation regulations and customs requirements to ensure that the goods pass customs smoothly.
(III) Shipping
Shipping Process
After the customer places an order, the sales department will promptly transmit the order information to the production department and the warehouse department. The production department organizes production according to the order requirements to ensure that the products are completed on time. After receiving the warehousing notice from the production department, the warehouse department conducts strict acceptance of the products, including appearance inspection, size measurement, performance testing, etc., and goes through the warehousing procedures after passing the acceptance.
The warehouse department prepares goods according to the order requirements. During the preparation process, it carefully checks the specifications, quantity, length and other information of the products to ensure consistency with the order. After the goods are prepared, the logistics department is notified to arrange transport vehicles and provide detailed shipping information, such as the shipping address, contact person, and contact information.
After receiving the notification, the logistics department coordinates with the warehouse department on the time and method of goods delivery. When the goods are delivered from the warehouse, the warehouse management personnel and logistics personnel jointly count and inspect the goods, and sign for handover after confirmation. Then, the goods are loaded onto the transport vehicle, fixed firmly, and the delivery procedures are completed.
After shipment, the sales department will promptly inform the customer of the shipping information, including the transportation method, the license plate number of the transport vehicle, the waybill number, and the estimated arrival time, to facilitate the customer to track the transportation status of the goods.
Shipping Time
For products in stock, they can generally be shipped within 1-3 working days after the customer places an order and pays for the goods. For products with customized lengths or special requirements, the production cycle is 7-10 working days, and they will be shipped in a timely manner after production is completed.
Before shipment, in case of special circumstances such as raw material shortage or equipment failure that may cause shipment delay, the sales department will communicate with the customer in a timely manner, explain the reasons, and negotiate a solution to ensure that the customer's interests are not affected.
(IV) Samples
Provision of Samples
To allow customers to better understand the performance and quality of the product, the company can provide free samples for customers. Customers can request samples from the company through phone calls, emails, online customer service, etc., stating the specifications, quantity and other information of the required samples, and providing detailed delivery address and contact information.
The company will send out the samples within 1-3 working days after receiving the sample request. The specifications and quality of the samples are consistent with those of mass-produced products, which can truly reflect the performance and characteristics of the products. The length of the samples is usually 1-2 meters. If customers have special needs, the sample length can be appropriately increased, but additional fees may be required.
Sample Fees and Refunds
For samples of ordinary specifications, the company provides them free of charge, but the customer shall bear the transportation cost of the samples. Customers can choose to pay the freight by cash on delivery or pay the freight to the company in advance, and the company will arrange the transportation on their behalf.
For specially customized samples, such as those with special lengths or colors, the company will charge a certain sample fee according to the production cost of the samples, and the specific fee can be negotiated with the customer. If the customer places an order for purchase after receiving the sample and the order amount reaches a certain quantity (such as more than 100,000 yuan), the company will refund the sample fee to the customer.
Sample Feedback
After receiving the sample, if the customer has any opinions or suggestions on the quality and performance of the sample, they can timely feedback to the company's sales department. The company will carefully listen to the customer's feedback, analyze and improve the problems existing in the sample.
If the customer is satisfied with the sample and intends to make a bulk purchase, the sales department will promptly provide the customer with a detailed quotation and supply plan to assist the customer in completing the purchase process.
(V) After-sales Service
Quality Assurance
The company provides a 2-year quality guarantee for the H07z-K LSZH cable (25mm²), starting from the date of ex-factory. During the quality guarantee period, if the product fails due to its own quality problems, the company will replace the product or repair it free of charge for the customer.
After-sales Service Response
If customers encounter any problems during the use of the product, they can contact the company's after-sales service department through various means such as phone calls, emails, and online customer service. After receiving the customer's help request, the after-sales service department will give an initial response within 2 hours to understand the specific situation of the problem. For simple problems, a solution will be provided to the customer within 24 hours; for complex problems, professional technical personnel will be arranged to conduct on-site investigation and handling to ensure that the problem is solved in a timely manner.
Product Return and Exchange
If the received product has quality problems or does not conform to the order requirements, and the product is unused and the packaging is intact, the customer can apply for return or exchange within 7 working days after receiving the product. The company will verify within 3 working days after receiving the customer's return or exchange application, and handle the return or exchange procedures for the customer after confirmation. The transportation costs incurred during the return or exchange process shall be borne by the company.
Technical Support
The after-sales service department of the company also provides professional technical support for customers. It can provide consulting services on product installation guidance, use and maintenance suggestions, etc. At the same time, the company will regularly organize technical training activities and invite customers to participate to improve customers' ability to use and maintain the products.
In conclusion, the H07z-K LSZH cable (25mm²) has significant advantages in terms of specification parameters, characteristic applications, material styles, and production processes of the product itself. At the same time, it also has a complete service system in terms of general information such as packaging, transportation, shipping, samples, and after-sales service, which can provide customers with high-quality products and excellent services. It is an ideal choice for industrial installations that require high safety, environmental protection, and reliability.
English
Español
Portugues
Français
العربية
ไทย
Türk dili
Indonesia
Tiếng Việt
телефон
почтовый ящик