Detailed Introduction to 1.5mm²-2.5mm² Ultra Flexible LSZH Wire H07z1-K
I. From the Perspective of the Product Itself
(1) Specification Parameters
The specification parameters of the 1.5mm²-2.5mm² ultra flexible LSZH wire H07z1-K are carefully designed to fully meet the medium and low power electricity needs in different scenarios, providing a solid guarantee for the stable operation of equipment.
The conductor diameter of the 1.5mm² wire is approximately 1.38mm, which ensures good conductivity while providing excellent
Flexibility. At room temperature, its DC resistance does not exceed 12.1Ω/km. The low resistance value means less loss during current transmission, which can effectively improve the efficiency of power transmission. The current-carrying capacity of this specification wire can reach 16A, which can meet the
Internal Wiring needs of small motors, sensors, precision instruments and other equipment. These devices usually have low power and relatively stable current demand, and the 16A current-carrying capacity is sufficient to cope with the current load during their normal operation.
The conductor diameter of the 2.5mm² wire is about 1.78mm, which is thicker than that of the 1.5mm² wire, giving it more advantages in conductivity. Its DC resistance at room temperature does not exceed 7.41Ω/km, with a lower resistance value, further reducing the loss during power transmission. In terms of current-carrying capacity, the 2.5mm² wire can reach 25A, which can meet the electricity needs of medium-load scenarios such as office equipment clusters and medical instrument power supply. For example, in an office, when multiple devices such as computers, printers, and copiers work at the same time, the total current is relatively large. The 25A current-carrying capacity can ensure the stable operation of these devices, avoiding power outages or equipment damage caused by insufficient current-carrying capacity of the wire.
Both wires comply with the H07z1-K standard certification, which is a strong guarantee for their performance and quality. The rated voltage is 450/750V, which is much higher than the electricity demand of conventional low-voltage equipment. The working voltage of conventional low-voltage equipment is usually around 220V, and the rated voltage of 450/750V provides sufficient safety margin for voltage fluctuations. In actual electricity use, the grid voltage may fluctuate for various reasons. The higher rated voltage can ensure that the wire still maintains stable performance during voltage fluctuations, and the insulation layer will not be damaged due to overvoltage, thus ensuring the safe operation of the equipment.
In addition, the insulation thickness of the wire is also strictly regulated. The insulation thickness of the 1.5mm² wire is about 0.8mm, and that of the 2.5mm² wire is about 1.0mm. Appropriate insulation thickness can effectively block current and prevent electric leakage accidents. At the same time, the outer diameter of the wire varies with specifications. The outer diameter of the 1.5mm² wire is about 3.5mm, and that of the 2.5mm² wire is about 4.2mm. The small outer diameter makes it more flexible and convenient for wiring in narrow spaces.
In terms of temperature performance, the long-term allowable operating temperature of the wire is 90℃, which can meet the working environment requirements of most equipment. Even when the equipment runs for a long time and the temperature rises, the wire can maintain stable performance and will not age or be damaged due to high temperature. The maximum temperature during a short circuit (with a maximum duration of no more than 5 seconds) does not exceed 250℃. This parameter ensures that the wire will not be damaged quickly in special cases such as short circuits, buying time for fault handling.
(2) Characteristic Uses
The 1.5mm²-2.5mm² ultra flexible LSZH wire H07z1-K, with its characteristics of ultra flexibility, halogen-free and high certification, has a wide range of characteristic uses in many fields with strict requirements for safety and flexibility.
In the field of precision electronic equipment, 1.5mm² wires are widely used for internal wiring of small motors, sensors and precision instruments. These devices have narrow internal spaces and complex line layouts, so they have extremely high requirements for the flexibility of wires. The wire can withstand tens of thousands of bends without breaking the core, and the minimum bending radius is only 4 times the outer diameter of the cable, which can easily adapt to the complex wiring environment inside the equipment and ensure the stability and reliability of line connections. For example, there are a large number of motors and sensors that need to be connected inside industrial robots. During operation, the robot will make various complex movements, and the wires need to bend continuously with the movement of the robot. The 1.5mm² ultra
Flexible Wire can well meet this demand, avoiding robot failures caused by line breakage.
The 2.5mm² wire plays an important role in office equipment clusters. In modern offices, there are many office equipment such as computers, printers, scanners and projectors. These equipment are usually concentrated in one area and need a lot of wires for connection and power supply. The current-carrying capacity of the 2.5mm² wire can reach 25A, which can meet the current demand when multiple devices work at the same time. At the same time, its ultra flexible feature allows the wire to be flexibly arranged under the desk, in the corner and other narrow spaces, without being messy, which not only ensures the stability of power supply, but also keeps the office environment clean and tidy.
The medical equipment field has extremely high requirements for the safety and cleanliness of wires. The 1.5mm²-2.5mm² ultra flexible LSZH wire H07z1-K has an irreplaceable role in this field. In medical equipment such as ventilators and monitors, the internal wiring needs to have good flexibility to adapt to various movements and operations of the equipment. The ultra flexibility of the wire can avoid line wear during the movement of the equipment, ensuring the normal operation of the equipment. At the same time, its halogen-free characteristic ensures that no toxic and harmful gases will be released even if it burns accidentally during the use of the equipment, which meets the requirements of clean environments such as operating rooms and ensures the life safety of patients and medical staff. For example, during surgery, the monitor needs to monitor the patient's vital signs in real time, and the stability of its internal lines is crucial. The wire can provide reliable power and signal transmission guarantee for the monitor.
The rail transit field is also an important application scenario for this wire. The lighting and communication lines in subway carriages have strict requirements for the flexibility and safety of wires. The subway will generate frequent vibrations during operation, which requires the wires to withstand repeated bending and stretching. The ultra flexibility of the 1.5mm²-2.5mm² ultra flexible LSZH wire H07z1-K can adapt to the frequent bending caused by vehicle vibration, ensuring the smoothness of the lines. At the same time, in case of fire accidents, its low smoke and halogen-free characteristics can reduce the generation of smoke, avoiding smoke from hindering passengers' escape and rescuers' rescue work, providing a strong guarantee for passengers' life safety.
In the smart home system of high-end residences, this wire has also been widely used. The 1.5mm² wire can be hidden in narrow spaces such as furniture and wall gaps, used to connect various small devices such as smart sensors and smart switches, which does not affect the beauty of the home and can realize intelligent control of the devices. The 2.5mm² wire is used for power supply of devices with slightly higher power such as smart curtains and security equipment. Its current-carrying capacity can meet the electricity demand of these devices, and the ultra flexible feature makes the arrangement of wires more flexible, which can adapt to different installation environments.
In addition, because the wire has passed the H07z1-K certification and meets the access standards of international markets such as the European Union, it is suitable for supporting export-oriented equipment. In some exported electronic equipment, medical equipment, industrial equipment and other products, using this wire as internal wiring or power supply lines can meet the relevant standards and requirements of the target market and improve the competitiveness of the products.
(3) Material and Style
In terms of material selection and style design, the 1.5mm²-2.5mm² ultra flexible LSZH wire H07z1-K is fully combined with the performance requirements and application scenarios of the product, making it have the characteristics of ultra flexibility, halogen-free, safety and reliability.
In terms of materials, the conductor is made of stranded multi-strand fine
Copper Wires. Compared with ordinary wires, this wire has more strands of copper wires and finer copper wire diameter. The structure of stranded multi-strand fine copper wires endows the wire with excellent flexibility, enabling it to withstand frequent bending and flexing without breaking easily. At the same time, the high-purity copper material ensures that the wire has good conductivity, which can effectively reduce the loss during current transmission and improve the efficiency of power transmission. In order to further enhance the flexibility and ductility of the copper wire, a special annealing process is applied to the copper wire during the production process. Annealing treatment can eliminate the internal stress of the copper wire, make the crystal structure of the copper wire more uniform, thereby improving its flexibility and fatigue resistance, and ensuring that the wire maintains good performance during long-term use.
The insulation layer is made of low smoke zero halogen (LSZH) material, which is an environmentally friendly
Insulation Material. Compared with traditional halogen-containing insulation materials, LSZH materials do not contain halogen elements such as chlorine and bromine, and will not release toxic and harmful gases such as hydrogen chloride and hydrogen bromide when burned. These gases not only harm human health, but also corrode equipment. At the same time, LSZH materials produce extremely low smoke density when burned, with a light transmittance of ＞80%, which can maintain good visibility in case of fire, creating favorable conditions for personnel evacuation and rescue work. In addition, LSZH materials also have good aging resistance, chemical corrosion resistance and mechanical properties, which can ensure that the wire runs stably for a long time in various harsh environments.
In terms of style, the wire adopts a single-core structure, with a layer of uniform LSZH insulation layer wrapped around the outer layer. The single-core structure makes the wire more flexible, facilitating wiring and installation in narrow spaces. The color of the insulation layer is usually black or gray, which are not only beautiful and elegant, but also have good light resistance and are not easy to fade. The surface of the wire is smooth and flat, without burrs and protrusions, which not only helps reduce friction resistance during wiring, avoids damage to the insulation layer, but also facilitates cutting and connection during installation.
In addition, the surface of the wire is printed with clear marks, including product model, specification, rated voltage, certification mark, manufacturer, production date and other information. These marks are not only convenient for users to identify and select products, but also can provide a basis for product quality traceability. At the same time, the marks are printed with wear-resistant printing technology to ensure that they will not be blurred or fall off during long-term use.
(4) Production Process
The production process of the 1.5mm²-2.5mm² ultra flexible LSZH wire H07z1-K is complex and rigorous, and each link is subject to strict quality control to ensure that the product has excellent performance and reliable quality.
The first step is the preparation of copper wires. High-purity electrolytic copper is selected as the raw material, and copper rods are made through smelting, ingot casting and other processes. The copper rod is drawn on a wire drawing machine, and through a series of dies of different specifications, the copper rod is drawn into copper wires with extremely fine diameters. During the wire drawing process, it is necessary to accurately control the drawing speed, temperature and die size to ensure that the diameter of the copper wire is uniform and the surface is smooth without defects. The drawn copper wire also needs to be annealed. The copper wire is heated to a certain temperature and kept for a period of time, then slowly cooled. Annealing treatment can eliminate the internal stress of the copper wire, improve its flexibility and ductility, and prepare for the subsequent stranding process.
Next is the stranding of copper wires. Multiple strands of annealed fine copper wires are stranded according to a certain stranding method and pitch to form a conductor. During the stranding process, it is necessary to ensure that the tension of each strand of copper wire is uniform and arranged neatly to ensure the roundness and conductivity of the conductor. The size of the stranding pitch will affect the flexibility of the conductor. By reasonably designing the stranding pitch, the flexibility of the conductor can be further improved, enabling the wire to withstand more bends.
Then is the extrusion molding of the insulation layer. LSZH material particles are added to the extruder and heated to melt into a molten melt. At the die head of the extruder, the molten LSZH melt is evenly extruded and wrapped around the
Stranded Conductor to form an insulation layer. During the extrusion process, it is necessary to accurately control the extrusion temperature, extrusion speed and die size to ensure that the insulation layer has uniform thickness, smooth surface, and is closely combined with the conductor without defects such as bubbles and impurities. The thickness of the insulation layer varies according to the specifications of the wire. The insulation layer thickness of the 1.5mm² wire is about 0.8mm, and that of the 2.5mm² wire is about 1.0mm. Appropriate insulation layer thickness can effectively ensure the insulation performance of the wire.
The wire after extrusion molding needs to be cooled, usually by water cooling. During the cooling process, the wire is introduced into the cooling water tank, and through the rapid cooling effect of cold water, the insulation layer is quickly solidified and shaped to ensure the dimensional stability and performance stability of the wire. The cooled wire is tested by a spark tester, and through high-voltage electrical testing, it is checked whether the insulation layer has defects such as pinholes and damage to ensure that the insulation performance of the insulation layer meets the requirements. If defective wires are found, they need to be marked and repaired or scrapped.
Subsequently, the wire enters the traction and take-up process. The traction machine pulls the wire at a constant speed to ensure uniform tension of the wire, avoiding the wire being stretched or damaged due to excessive tension. The take-up machine neatly winds the wire on the reel for transportation and storage. During the take-up process, it is necessary to control the take-up speed and tension to ensure that the wire is arranged tightly and neatly on the reel without looseness or entanglement.
During the production process, sampling tests are also required on various properties of the wire, including the DC resistance of the conductor, the thickness of the insulation layer, voltage resistance performance, flame retardant performance, low smoke zero halogen performance, flexibility, etc. These tests can timely find problems in the production process and take corresponding measures for rectification to ensure the stability and consistency of product quality. At the same time, the environment of the production workshop also needs to be strictly controlled to keep the workshop clean and hygienic, avoiding the impact of dust, impurities, etc. on product quality.
II. From the Perspective of General Product Information
(1) Packaging
The packaging design of the 1.5mm²-2.5mm² ultra flexible LSZH wire H07z1-K fully considers the needs of product protection, transportation and storage, ensuring that the wire remains in good condition before reaching the user.
For short-length wires, plastic reels are usually used for packaging. The plastic reels are made of high-strength polyethylene material, which has the characteristics of light weight, high strength and corrosion resistance. When the wire is wound on the plastic reel, it is arranged neatly and tightly to avoid mutual extrusion and wear. The length of the wire wound on each plastic reel varies according to specifications, generally 100 meters or 200 meters. A layer of transparent plastic film is 套在 the outside of the reel, which can play the role of moisture-proof, dust-proof and anti-pollution, protecting the insulation layer of the wire from the influence of the external environment. The side of the plastic reel is printed with clear product information, including product model, specification, length, rated voltage, certification mark, manufacturer, etc., which is convenient for users to identify and accept.
For long-length wires, wooden cable reels are used for packaging. The wooden cable reels are made of high-quality solid wood, which has been dried and anti-corrosion treated, and has high strength and stability. The size of the cable reel is designed according to the length and specification of the wire, and the diameter is usually between 0.5 meters and 1.2 meters. When the wire is wound on the wooden cable reel, a mechanical winding method is adopted to ensure that it is arranged neatly and tightly with uniform tension. The outside of the cable reel is wrapped with a layer of linen or woven bag to further enhance the protection of the wire and prevent damage caused by collision and friction during transportation. The side of the wooden cable reel is also printed with detailed product information and warning signs, such as "Do not press heavily" and "Moisture-proof and sun-proof".
In addition, in order to meet the packaging requirements of exported products, the packaging materials also need to comply with relevant international transportation standards. For example, wooden cable reels need to be fumigated to prevent carrying pests and meet the quarantine requirements of importing countries. The marks on the packaging need to be in both Chinese and English, clearly indicating various information of the product.
In terms of packaging environmental protection, we try to choose recyclable and degradable packaging materials to reduce environmental pollution. Plastic reels and plastic films are made of recyclable polyethylene materials, and the wood source of wooden cable reels meets the requirements of sustainable development. At the same time, in the packaging process, excessive packaging is avoided to save packaging materials and reduce packaging costs.
(2) Transportation
The transportation process of the 1.5mm²-2.5mm² ultra flexible LSZH wire H07z1-K needs to strictly abide by relevant regulations and operating procedures to ensure that the product is not damaged during transportation and arrives at the destination safely.
In terms of choosing the transportation method, road transport, railway transport, or air transport can be selected based on the transport distance, quantity, and customer requirements. Road transport has the characteristics of high flexibility, fast transport speed, and door-to-door service, making it suitable for short-distance transport and small-batch goods. For medium and long-distance transport and large quantities of goods, railway transport is a more economical choice, with advantages such as large transport capacity, low cost, and little impact from weather. Air transport is suitable for urgent orders and goods with strict requirements on transport time. Although the transport cost is high, the transport speed is fast, ensuring that the products are delivered in a timely manner.
Before transport, the packaged wires need to be properly fixed. For short-length wires packaged with plastic reels, when loading into transport vehicles, they should be neatly stacked in the carriage and separated and fixed with partitions or ropes to prevent shaking, collision, and extrusion during transport. For long-length wires packaged with wooden cable reels, steel wires or chains should be used to firmly fix the cable reels on the flatbed of the transport vehicle to ensure that the cable reels do not roll or tip over during transport. When fixing, attention should be paid to uniform force to avoid damaging the cable reels.
During transport, effective protective measures should be taken to prevent the wires from direct sunlight, rain, snow, and high-temperature exposure. Direct sunlight and high-temperature exposure can cause the temperature of the wires to rise, which may affect the performance of the insulation layer; rain and snow can make the wires damp, reducing their insulation performance and service life. Therefore, during transport, the wires should be covered with tarpaulins or other materials to protect them from harsh weather. At the same time, the wires should be kept away from sharp objects and corrosive substances to prevent the insulation layer from being scratched or corroded.
Transport vehicles must abide by traffic rules during driving, maintain stable driving, and avoid sudden braking, sharp turns, overspeeding, and other behaviors to reduce impact and vibration on the wires. For wires transported over long distances, the fixing of the wires and the integrity of the packaging should be checked regularly, and problems should be handled in a timely manner. During transport, fire prevention and anti-theft measures should also be taken to ensure the safety of the goods.
When loading and unloading goods, professional loading and unloading equipment such as forklifts and cranes should be used. It is strictly forbidden to manually drag or roll cable reels or plastic reels at will to avoid damage to the wires or casualties. During loading and unloading, goods should be handled with care to avoid severe impact and collision on the wires.
(3) Shipment
The shipment process of the 1.5mm²-2.5mm² ultra flexible LSZH wire H07z1-K is standardized and efficient, aiming to ensure that products are delivered to customers accurately and on time.
After receiving an order, the sales team immediately communicates with the warehouse and production departments to confirm the inventory status. If the required specifications are in stock, the warehouse will arrange for picking and inspection within 24 hours; if customization or production is needed, the production department will formulate a detailed production plan based on the order quantity and specifications, with a guaranteed delivery cycle of 3-7 working days for conventional models.
Before shipment, warehouse personnel conduct a comprehensive inspection of each batch of wires. This includes verifying that the model, specification, length, and quantity match the order, checking the integrity of the packaging (such as whether the plastic film is intact and the wooden cable reel is firm), and randomly sampling to test key performance indicators like insulation thickness and conductor resistance to ensure compliance with H07z1-K standards. Only products that pass all inspections are affixed with a qualified label and scheduled for shipment.
For shipment arrangement, the logistics department selects appropriate transport vehicles based on the order volume. Small batches (less than 500 meters) are usually shipped via express or dedicated logistics vehicles, with door-to-door delivery; large batches are transported by railway or long-haul trucks, with real-time tracking of the shipment status. The warehouse provides the logistics company with detailed documents, including the packing list, product certificate, and inspection report, which are enclosed with the goods for the customer's reference.
Once the goods are dispatched, the customer service team sends a shipment notice to the customer via email or SMS, including the waybill number, logistics company contact information, and estimated arrival time. For international orders, additional customs clearance documents such as commercial invoices and packing lists in English are provided to ensure smooth customs clearance.
In case of urgent orders (e.g., medical equipment manufacturers in need of emergency replenishment), the company activates an emergency response mechanism, prioritizing production and arranging special vehicles for transport to shorten the delivery time by 50% compared to the conventional cycle.
(4) Samples
To help customers better understand the performance of the 1.5mm²-2.5mm² ultra flexible LSZH wire H07z1-K, the company offers a convenient sample service.
Customers can apply for samples through the official website, email, or phone. The application requires providing basic information such as the company name, contact person, and required specifications (1.5mm² or 2.5mm²). For new customers, samples of up to 5 meters per specification are provided free of charge, with the customer only responsible for the freight; for long-term cooperative customers, both the sample and freight are waived.
The sample preparation cycle is 1-2 working days. Each sample is labeled with detailed information (model, specification, production date) and accompanied by a sample test report, which includes data on flexibility (number of bending tests), flame retardancy (IEC 60332-1-2 test results), and smoke density (light transmittance value). The samples are packaged in small plastic reels with a protective box to prevent damage during transport.
After the customer receives the sample, the technical support team proactively follows up within 3 working days to answer questions about the sample's performance and application. If the customer needs further tests (such as halogen content detection), the company can provide a third-party test report upon request to assist in making purchasing decisions.
(5) After-sales Service
The company provides a comprehensive after-sales service system for the 1.5mm²-2.5mm² ultra flexible LSZH wire H07z1-K to solve customer concerns.
Quality Guarantee: All wires come with a 5-year quality warranty. If there is a quality problem (such as insulation cracking or conductor oxidation) under normal use conditions within the warranty period, the company will provide free replacement after verifying the problem through photos or samples provided by the customer. For non-quality issues caused by improper use, the company offers paid maintenance services.
Technical Support: A dedicated after-sales technical team is available 24/7 to provide professional advice. Customers can consult on wiring methods, bending radius requirements, and temperature resistance limits via phone or online platforms. For large-scale projects, the company can dispatch technicians to the site for guidance on installation and laying to ensure compliance with the wire's performance characteristics.
Complaint Handling: The company has a 48-hour complaint response mechanism. After receiving a customer complaint, a dedicated person is assigned to follow up, conduct an investigation, and propose a solution within 2 working days. For example, if the received goods have specification errors, the company will arrange for replacement within 3 days and bear the round-trip freight.
Regular Follow-up: For key customers, the company conducts quarterly follow-up visits to understand the wire's usage status, collect feedback on product improvement, and provide maintenance tips (such as avoiding contact with oil and chemicals) to extend the wire's service life.
In addition, the company has established a complete after-sales service file system, recording each customer's purchase information, after-sales records, and feedback to continuously improve service quality and product performance.
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