I. From the Perspective of the Product Itself
(1) Specification Parameters
The specification parameters of the H07z1-K LSZH cable are a key reflection of its performance and application range. They have undergone precise design and strict testing to ensure stable performance in various low-voltage electrical systems.
In terms of conductor specifications, the cable is available in two common cross-sectional areas: 1.5mm² and 2.5mm². The 1.5mm² conductor is formed by stranding multiple fine
Copper Wires with a diameter of approximately 0.15mm, with a total number of strands usually ranging from 50 to 60; the 2.5mm² conductor is stranded with more strands, generally 80 to 90. This stranded structure not only enhances the
Flexibility of the conductor but also improves its conductive efficiency. The DC resistance of the two specifications of conductors at 20°C is clearly limited: 1.5mm² is not greater than 12.1Ω/km, and 2.5mm² is not greater than 7.41Ω/km. The excellent conductivity can reduce energy loss during power transmission.
In terms of current-carrying capacity, the 1.5mm² cable has a current-carrying capacity of approximately 16-25A when laid in air, and slightly higher when laid underground, about 18-28A, which is suitable for light-load scenarios such as small electrical appliances and lighting circuits; the 2.5mm² cable has a current-carrying capacity of up to 24-32A in air and 26-35A when underground, which can meet the power supply needs of high-power equipment such as air conditioners and water heaters.
The voltage level is clearly 450/750V, where 450V is the phase-to-ground voltage and 750V is the phase-to-phase voltage. This parameter makes it suitable for low-voltage power distribution systems in industrial, commercial and civil buildings, and can be used as power, control or lighting cables.
The thickness of the insulation layer varies according to the conductor specifications. The insulation layer of the 1.5mm² cable is not less than 0.8mm, and that of the 2.5mm² cable is not less than 0.9mm. The insulation layer is made of LSZH material, with a dielectric strength exceeding 20kV/mm and an insulation resistance of not less than 100MΩ·km at 20°C, which can effectively block current and prevent leakage and short-circuit accidents.
The overall outer diameter of the cable also differs due to different specifications. The outer diameter of the 1.5mm² cable is approximately 5-6mm, and that of the 2.5mm² cable is approximately 6-7mm. The minimum bending radius is 4-6 times the outer diameter of the cable. The static bending radius of the 1.5mm² cable is not less than 20mm, and the dynamic bending radius is not less than 30mm; the static bending radius of the 2.5mm² cable is not less than 24mm, and the dynamic bending radius is not less than 36mm, ensuring installation flexibility in narrow spaces and frequent bending environments.
The temperature resistance performance is excellent. The long-term operating temperature range is -30°C to 90°C. It can maintain good flexibility in a low-temperature environment of -30°C, and the insulation layer performance is stable at a high temperature of 90°C; the short-term overload temperature can reach 130°C for no more than 5 seconds, which can cope with sudden overload situations.
In addition, the cable has passed a number of mechanical performance tests, such as a tensile strength of not less than 12MPa and an elongation at break of not less than 150%, with good toughness and tensile resistance, which can resist mechanical damage during installation and use.
(2) Characteristic Uses
With its unique combination of properties, the H07z1-K LSZH cable demonstrates irreplaceable characteristic uses in many fields, providing strong protection for the safe operation of electrical systems in different scenarios.
In the field of high-rise buildings, this cable is widely used. As urban buildings continue to develop upwards, high-rise buildings have dense electrical equipment and a large number of people, so fire safety is crucial. The low smoke and halogen-free characteristics of the cable can significantly reduce the generation of smoke and toxic gases in the event of a fire, buying valuable time for personnel evacuation and fire rescue. It can be seen in the lighting systems, elevator power supply circuits, and fire-fighting facility lines of high-rise buildings. For example, in high-rise residential buildings, it can be used to connect each household's distribution box with lighting fixtures and household appliances to ensure the safety of residents' electricity use; in high-rise office buildings, it can provide stable power supply for office air conditioners, computers, printers and other equipment, while ensuring the safety of personnel in emergency situations.
Hospitals are places with high requirements for electrical safety and the environment, and the H07z1-K LSZH cable plays an important role here. In the operating room, various precision medical equipment requires stable power supply. The low smoke and halogen-free characteristics of the cable can avoid the impact of toxic gases generated by cable combustion on the surgical environment and patient recovery; in the intensive care unit, if the power supply lines of life monitoring equipment use this cable, it can reduce the risk of equipment damage due to corrosion and ensure the safety of patients' lives. In addition, in areas such as hospital pharmacies and laboratories, where various chemical drugs are stored, the chemical corrosion resistance of the cable can also meet its usage needs.
In subway and rail transit systems, the space is enclosed and densely populated, so the requirements for cable safety and reliability are strict. The cable can be used for power transmission in lighting, ventilation, communication and other systems of subway stations. Its low smoke and halogen-free characteristics can effectively reduce smoke concentration in the event of a fire in the tunnel, facilitating personnel evacuation and rescue work. At the same time, the flexible structure of the cable enables it to adapt to the vibration environment of subway vehicles and track equipment, ensuring the stability of power transmission and the normal operation of rail transit.
In educational places such as schools and kindergartens, where there are dense personnel, mostly minors, safety is particularly important. Using this cable in classroom lighting lines and power supply lines of multimedia teaching equipment can reduce the risk of electrical fires. In laboratories, due to possible chemical experiments, the chemical corrosion resistance and low smoke and halogen-free properties of the cable can ensure the safety of the experimental environment and avoid accidents caused by cable problems.
This cable is also increasingly used in the new energy field. In solar photovoltaic power plants, it can be used to connect photovoltaic panels with inverters and other equipment, and its temperature resistance can adapt to outdoor high and low temperature environments; the
Internal Wiring of wind power generation equipment can also use this cable. Its flexible structure is convenient for laying in the complex space inside the equipment, and its low smoke and halogen-free characteristics meet the environmental protection requirements of the new energy industry.
Data centers, as core places for information storage and processing, have extremely high requirements for the stability and safety of electrical systems. The H07z1-K LSZH cable can be used for power supply lines and control lines in server rooms. Its stable electrical performance can ensure the continuous operation of servers, and its low smoke and halogen-free characteristics can reduce damage to equipment in the event of a fire and reduce the risk of data loss.
In ships and marine engineering, the environment is humid and there is salt spray corrosion. The wear resistance, oil resistance and chemical corrosion resistance of the cable enable it to adapt to such harsh environments. It can be used for lighting, power, communication and other systems of ships, providing power guarantee for the navigation safety of ships, and its low smoke and halogen-free characteristics also meet ship safety specifications.
(3) Material and Style
Material
The material selection of the H07z1-K LSZH cable is the core guarantee of its excellent performance. Each material has undergone strict screening and testing to ensure the quality and reliability of the cable.
The conductor is made of high-purity electrolytic copper with a purity of more than 99.95%. High-purity copper has excellent conductivity, which can efficiently transmit electricity and reduce energy loss. At the same time, copper has good ductility and flexibility, which is convenient for processing into fine copper wires for multi-strand stranding, making the conductor have excellent flexibility to meet the installation needs in complex environments. In addition, copper has good corrosion resistance, is not easy to be oxidized in normal use environments, can maintain stable conductivity for a long time, and extend the service life of the cable.
Both the insulation layer and the sheath layer are made of low smoke zero halogen (LSZH) materials, which are environmentally friendly materials that do not contain halogens (fluorine, chlorine, bromine, iodine, astatine). This material will not release toxic halogen gases such as chlorine and bromine when burned. These gases will not only cause serious damage to the human respiratory tract but also corrode surrounding equipment and building structures. At the same time, it produces very little smoke when burned, with low smoke density and high light transmittance, which can reduce the difficulty of evacuation caused by smoke blocking the line of sight in a fire, creating favorable conditions for personnel escape and rescue work.
LSZH materials also have good temperature resistance, can maintain stable physical and chemical properties in the temperature range of -30°C to 90°C, are not easy to age and crack in high and low temperature environments, and ensure the insulation and protection effect of the cable. In addition, this material has certain wear resistance, oil resistance and chemical corrosion resistance, which can resist mechanical friction, oil erosion and slight chemical contact in daily use, and protect the internal conductor from damage.
Style
The cable is a single-core
Flexible Cable style, that is, each cable has only one conductor formed by stranding multiple fine copper wires inside, wrapped with a layer of LSZH insulation layer, and some specifications are also wrapped with a layer of LSZH sheath outside the insulation layer.
The single-core design makes the cable structure simple, with higher flexibility during laying, and can easily pass through narrow pipes, trunking and small spaces inside equipment, suitable for complex wiring environments. For example, in the internal wiring of mechanical equipment, single-
Core Cables can flexibly bypass various components, reducing installation difficulty.
Flexibility is a prominent feature of this cable style. The stranded structure of multiple fine copper wires endows the cable with excellent bending performance, enabling it to withstand frequent bending and movement without being damaged. This feature makes it very suitable for equipment that needs to be moved or bent frequently, such as portable electrical appliances and power supply lines of robotic arms.
The cable has a circular appearance with a smooth surface, usually black or gray in color, and some products are available in other colors according to customer needs. The surface of the cable clearly prints model, specification, rated voltage, manufacturer, certification mark and other information, such as "H07z1-K 1.5mm² 450/750V", which is convenient for installers to quickly identify and select, and conforms to internationally accepted cable marking standards.
In addition, the cable has a small outer diameter and light weight. Compared with traditional
Rigid Cables, it is more convenient for transportation, handling and installation, which can reduce the labor intensity of construction personnel and improve installation efficiency.
(4) Production Process
The production process of the H07z1-K LSZH cable is complex and rigorous. From raw material processing to finished product inspection, each link has strict quality control to ensure that the cable performance meets relevant standards and requirements.
The production process of the conductor starts with the drawing of copper rods. High-purity electrolytic copper rods are drawn through a wire drawing machine for multiple passes to make fine copper wires with a diameter of about 0.15mm. During the drawing process, it is necessary to accurately control the drawing speed, tension and die size to ensure that the diameter of the copper wire is uniform, the surface is smooth, and there are no burrs, scratches and other defects. The drawn copper wire also needs to be annealed. The copper wire is heated to 300-500°C, kept for a certain period of time and then slowly cooled to eliminate the internal stress generated during the drawing process, improve the flexibility and ductility of the copper wire, and prepare for the subsequent stranding process.
Copper wire stranding is a key link in conductor production. According to different cable specifications, a corresponding number of fine copper wires are stranded by a stranding machine to form 1.5mm² or 2.5mm² 24f1e1384b3a93dc71c3887b126f2c5
4 Conductors. During the stranding process, it is necessary to strictly control the stranding pitch. Too small a pitch will increase the hardness of the conductor and affect flexibility; too large a pitch will reduce the structural stability and conductivity of the conductor. Usually, the stranding pitch is 10-15 times the outer diameter of the conductor to ensure that the conductor has good flexibility and stable performance. The
Stranded Conductor needs to undergo appearance and size inspection to ensure that its roundness and cross-sectional area meet the requirements.
The extrusion molding of the insulation layer is an important step in the production process. LSZH
Insulation Material particles are added into the hopper of the extruder, heated and melted, and then evenly extruded and wrapped around the copper conductor through an extrusion die to form an insulation layer. During the extrusion process, it is necessary to accurately control the extrusion temperature, extrusion speed and die pressure. The extrusion temperature is generally controlled at 160-190°C. Different types of LSZH materials may need to fine-tune the temperature parameters to ensure that the material is fully melted without decomposition; the extrusion speed should match the traction speed of the conductor to ensure uniform thickness of the insulation layer; the stability of the die pressure can ensure that the insulation layer is tightly combined with the conductor, avoiding defects such as bubbles and eccentricity. The extruded cable immediately enters the cooling water tank for cooling to quickly solidify and shape the insulation layer.
For cables that require a sheath layer, after the insulation layer is cooled and solidified, the sheath layer is extruded. The sheath layer is also made of LSZH material, and the extrusion process is similar to that of the insulation layer, but the process parameters need to be adjusted according to the thickness and performance requirements of the sheath layer. The main function of the sheath layer is to enhance the mechanical protection performance of the cable and improve the cable's wear resistance, oil resistance and chemical corrosion resistance.
The cooled cable needs to be printed. The model, specification, rated voltage, manufacturer, certification mark and other information are clearly printed on the surface of the cable through a printing machine. Wear-resistant ink is used for printing to ensure that the information is clearly visible during the service life of the cable.
Finished product inspection is the final link of the production process, including appearance inspection, size measurement, electrical performance testing and mechanical performance testing. Appearance inspection mainly checks whether the cable surface has scratches, bubbles, depressions and other defects; size measurement includes conductor diameter, insulation layer thickness, sheath layer thickness and cable outer diameter, etc., to ensure compliance with design requirements; electrical performance testing includes insulation resistance testing, dielectric strength testing and DC resistance testing, etc., to verify whether the electrical performance of the cable meets the standards; mechanical performance testing includes tensile strength testing, elongation at break testing and bending testing, etc., to check whether the mechanical performance of the cable meets the use requirements. In addition, the cable will also undergo LSZH performance testing, such as smoke density testing and toxicity index testing, to ensure that it meets relevant standards.
Cables that pass the strict inspection are cut and wound according to the specified length, and then enter the finished product warehouse waiting for delivery.
II. From the Perspective of General Product Information
(1) Packaging
The packaging design of the H07z1-K LSZH cable fully considers the needs of protecting the cable, facilitating transportation and storage, and adopts a scientific and reasonable packaging method to ensure that the cable is not damaged during the entire circulation process.
For long-length cables, cable reels are usually used for packaging. There are two types of cable reels: wooden and steel. The appropriate cable reel is selected according to the specification and weight of the cable. Since 1.5mm² and 2.5mm² cables have small cross-sectional areas and relatively light weights, wooden cable reels are generally used, which have low cost and light weight, convenient for handling and transportation. The diameter of the cable reel is usually 600-800mm, and the width of the reel is 200-300mm, which can hold a certain length of cable. The common length per reel is 100 meters, 200 meters or 500 meters.
When packaging, the cable is neatly wound on the cable reel, and appropriate tension is maintained during winding to avoid loosening or twisting of the cable. To prevent the cable from slipping off the cable reel during transportation, baffles are installed on both sides of the cable reel, and the height of the baffles is not less than twice the diameter of the cable. After winding, a layer of plastic film is wrapped around the outer layer of the cable. The plastic film has good moisture-proof and dust-proof performance, which can effectively prevent the cable from being polluted by moisture, dust and other impurities during storage and transportation, and protect the insulation layer and sheath layer of the cable from damage.
For short-length cables, such as samples or retail short-section cables (usually 1 meter, 5 meters, 10 meters, etc.), coil packaging is adopted. The cable is wound into a coil with a diameter of 200-300mm and fixed with plastic straps at multiple positions to prevent the coil from loosening. Then the coil is put into a sealed plastic packaging bag, which is printed with clear product information, including model, specification, length, rated voltage, manufacturer, etc., convenient for customers to identify and use. For a large number of short-length cables, multiple coils are put into cartons, and the inside of the cartons is separated by foam or cardboard to avoid collisions and abrasions between the cables.
Whether it is a cable reel or a coiled cable, product labels are firmly affixed to the packaging. The labels detail the cable's model, specification, length, rated voltage, production date, batch number, execution standard, manufacturer's name and contact information, etc., facilitating customers to check during receipt and acceptance. At the same time, some warning information is marked on the label, such as "Do not stack heavily", "Moisture-proof and sun-proof", "Handle with care", etc., to remind transportation and handling personnel to operate correctly.
(2) Transportation
The transportation process of the H07z1-K LSZH cable needs to strictly abide by relevant regulations and operating procedures to ensure the quality and safety of the cable.
Before transportation, a comprehensive inspection of the cable packaging is required to confirm whether the cable reel is firm, the cable is neatly wound, the plastic film is intact, and the label information is clear and complete. For wooden cable reels, check for damage, deformation, and whether the baffles are firm; for coiled cables, check whether the plastic packaging bags are sealed and the cartons are intact. If damaged packaging or abnormal cables are found, they must be handled or replaced in a timely manner to avoid damage to the cables during transportation.
According to the quantity, length and transportation distance of the cables, select appropriate transport vehicles and transportation methods. Ordinary trucks can be used for short-distance transportation, while closed trucks or containers are more suitable for long-distance transportation to prevent the cables from being exposed to direct sunlight, rain and collisions with external objects. For large quantities of cables, pallets can be used for fixing. Multiple cable reels are neatly placed on the pallets and fixed with strapping to prevent sliding and collision during transportation.
When loading and unloading cables, special lifting equipment such as forklifts and cranes must be used. It is strictly forbidden to manually drag or roll the cable reels at will. When using a crane for loading and unloading, the slings should be firmly tied to the shaft holes on both sides of the cable reel to ensure balanced lifting and avoid tilting or falling of the cable reel. The lifting and lowering processes should be operated slowly to avoid damage to the cable reel and cables due to excessive impact. When using a forklift for loading and unloading, the forks of the forklift should be inserted into the bottom of the cable reel to keep the cable reel stable, and it is strictly forbidden to lift with a single fork. For coiled cables, they should be handled with care during loading and unloading to avoid extrusion and throwing.
During transportation, the cables should avoid direct sunlight, rain and high-temperature exposure. Direct sunlight and high temperatures will accelerate the aging of the cable's insulation and sheath layers, affecting the service life of the cable; rain may cause the cables to get damp and reduce their insulation performance. Therefore, transport vehicles should be covered with tarpaulins to provide effective protection for the cables. At the same time, the cables should be kept away from heat sources and corrosive substances such as engine oil and acid-base solutions to prevent the cables from being damaged by high temperatures and chemical corrosion.
The transport vehicle should drive smoothly during driving, avoiding sudden braking, sharp turns and severe bumps to prevent the cables from sliding and colliding in the vehicle. There should be a certain gap between the cable reels, and they should be fixed with wooden wedges or other items to prevent mutual collision. For long-distance transportation, the condition of the cables should be checked regularly. If any abnormality is found, the vehicle should be stopped for treatment in time.
After arriving at the destination, the cables should be unloaded to a flat, dry and well-ventilated place, away from fire sources and flammable and explosive materials. The unloading process also requires the use of special equipment and correct operating methods to avoid damage to the cables. After unloading, the appearance of the cables should be checked, and they can be stored only after confirming that there is no damage.
(3) Delivery
The delivery process of the H07z1-K LSZH cable is standardized and orderly, aiming to ensure that the goods can be delivered to customers accurately and on time.
After a customer places an order, the sales department will immediately review the order to confirm the accuracy of the order information, including the cable's model, specification, quantity, delivery address, delivery time, contact information, etc. After verification, the order information is transmitted to the production department and the warehousing department. If it is a stock product, the warehousing department will prepare the goods directly according to the order requirements; if production is needed, the production department will arrange the production plan according to the order to ensure that the production is completed within the specified delivery period.
After receiving the delivery notice, the warehousing department will retrieve the corresponding cables from the warehouse according to the order information. During the retrieval process, the model, specification, quantity, production date, etc. of the cable should be rechecked to ensure consistency with the order. At the same time, check the packaging and appearance quality of the cable. If problems such as damaged packaging and scratches on the cable surface are found, they should be replaced in time to ensure that the cables sent to customers are intact.
After preparing the goods, the warehousing department will contact the logistics company, arrange appropriate transport vehicles, and sign a transport contract with the logistics company to clarify the rights and obligations of both parties, including transport time, transport route, cargo insurance, freight settlement, etc. For customers with special transport requirements, such as urgent transport and designated transport methods, the warehousing department will negotiate with the logistics company to try to meet the customer's needs.
Before delivery, the warehousing department will sort out the product certificate, inspection report, packing list and other materials of the cable, which will be sent together with the goods. These materials are important basis for customers to accept the cable, and their authenticity and integrity must be guaranteed. At the same time, the customer's name, order number, delivery address and other information will be marked in the obvious position of the goods to facilitate identification by the logistics company and the customer.
After the goods are delivered, the sales department will promptly inform the customer of the delivery information, including the name of the logistics company, the license plate number of the transport vehicle, the waybill number, the estimated arrival time, etc., so that the customer can prepare for receipt. The sales department will also track the transport status of the goods, and understand the location and transport status of the goods in real time through the logistics information system of the logistics company. If any abnormality is found, it will communicate with the logistics company in time to solve it, ensuring that the goods can be delivered to the customer on time and safely.
After the customer receives the goods, the sales department will make a return visit to confirm the customer's satisfaction with the goods, understand the acceptance of the cable, and deal with and feedback the problems raised by the customer in a timely manner.
(4) Samples
In order to allow customers to better understand the performance and quality of the H07z1-K LSZH cable, the company provides sample services, and customers can apply for samples according to their own needs.
When applying for samples, customers can contact the sales department through various channels such as the company's official website, telephone, email, and online customer service. Customers need to provide detailed information, including the model, specification, quantity of the required samples, as well as the customer's name, contact person, contact number, and delivery address.
After receiving the sample application, the sales department will confirm the relevant information with the customer within 1-2 working days and inform the customer of the sample policy, such as whether the sample is free, the method of freight payment, etc. Generally, for small quantities of samples (usually 1-3 meters), the company provides them free of charge, but the customer needs to bear the freight. For large quantities or long-length samples, the company will charge a certain fee according to the cost, and the specific fee can be negotiated with the customer.
The production and packaging of samples are carried out in accordance with the standards of bulk products to ensure that the performance and quality of the samples are consistent with the bulk products. The sample packaging is marked with the sample's model, specification, production batch number and other information, and is accompanied by relevant materials such as product instructions and inspection reports to facilitate customers' testing and inspection.
Samples are usually delivered by express. After the samples are sent, the sales department will promptly inform the customer of the express tracking number so that the customer can track the logistics information of the samples. If the customer has any questions about the samples after receiving them, the sales department will arrange professional and technical personnel to answer them in a timely manner and provide relevant technical support.
(5) After-sales Service
The company provides comprehensive after-sales service for the H07z1-K LSZH cable to protect the legitimate rights and interests of customers and improve customer satisfaction.
In terms of product quality assurance, the company promises that the produced cables meet relevant national standards and industry specifications, and the product quality warranty period is 12 months from the date of product delivery. During the warranty period, if the cable is damaged or has performance failures due to its own quality problems, customers can apply for warranty services to the company with product certificates, purchase vouchers, etc. The company will respond within 24 hours after receiving the customer's warranty application and arrange professional and technical personnel to conduct testing and evaluation. If it is confirmed to be a quality problem, the company will provide customers with free repair, replacement or return services according to the actual situation.
For technical problems encountered by customers during installation and use, the company's after-sales service team will provide professional technical support. Customers can seek help from the after-sales service team through phone calls, emails, online consultations, etc. After-sales service personnel will promptly answer customers' questions and provide suggestions and solutions for installation guidance, troubleshooting, etc. If on-site technical support is needed, the company will arrange technical personnel to provide on-site services according to the customer's needs and actual situation, and the cost of on-site services will be negotiated separately according to specific circumstances.
The company has established a sound customer feedback mechanism and attaches great importance to customers' opinions and suggestions. If customers have any opinions or suggestions on product quality, service, etc. during the use of the product, they can feedback to the company at any time. The company will promptly handle and reply to them and continuously improve product and service quality according to customers' feedback.
In addition, the company will also conduct regular return visits to customers to understand the use of the cables and customers' needs, provide customers with necessary maintenance suggestions, help customers extend the service life of the cables, and ensure the safe and stable operation of the cables.
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