Cross-sectional Size: The cross-sectional size of the cable ranges from 1.5mm² to 6mm². This range is set by fully considering the power requirements of different electrical equipment and lines. The 1.5mm² cable is relatively slender and suitable for low-power scenarios; the 6mm² cable is relatively thick and can meet the power supply needs of higher power. Cables with different cross-sectional sizes have obvious differences in appearance. The larger the cross-section, the thicker the outer diameter of the cable. Users can quickly identify its specification through visual observation, facilitating accurate selection according to the actual electrical load.
Current-carrying Capacity: Current-carrying capacity is one of the core performance parameters of the cable. Cables with different cross-sectional sizes have significantly different current-carrying capacities, which can meet diverse power demand. The 1.5mm² cable has a current-carrying capacity of about 14-20A, suitable for lighting circuits and power supply of small household appliances (such as desk lamps, TV sets, etc.). These devices have low power and low current demand; the 2.5mm² cable has a current-carrying capacity of 20-25A, which can be used for ordinary socket circuits and small power equipment (such as small blowers, grinders, etc.), and can meet the power demand of daily household and small industrial equipment; the 4mm² cable has a current-carrying capacity of about 25-32A, applicable to high-power household appliances such as air conditioners and electric water heaters, which require large current support during operation; the 6mm² cable has a current-carrying capacity of up to 32-40A, which can meet the power supply needs of medium-sized power equipment (such as medium-sized air compressors, water pumps, etc.) and main lines, ensuring stable operation of the lines under high load. At the same time, the current-carrying capacity is affected by factors such as ambient temperature and laying methods. In high-temperature environments or when using pipe laying, due to poor heat dissipation conditions, the current-carrying capacity needs to be appropriately reduced to ensure the safe operation of the cable.
Rated Voltage: The rated voltage of the cable is 450/750V, which conforms to the standards of low-voltage distribution systems and is compatible with most low-voltage electrical equipment and distribution systems. 450V represents the rated working voltage of the cable, and 750V represents the rated insulation voltage of the cable. The higher insulation voltage ensures that the cable can maintain stable insulation performance when the voltage fluctuates, and is suitable for various low-voltage distribution scenarios such as households, commercial buildings, and industrial plants.
Insulation Performance Parameters: The insulation resistance of the cable is ≥100MΩ·km, which ensures that the cable has excellent insulation performance, can effectively prevent current leakage, reduce power loss, and reduce the risk of short circuits and electric shocks. In addition, the cable has passed the 3000V voltage withstand test, with no breakdown occurring during the 1-minute test, fully verifying its insulation stability in high-voltage environments and providing a strong guarantee for the safe operation of the cable in complex electrical environments.
Fire Resistance Parameters: The fire resistance of the cable is one of its core advantages, which has passed the GB/T 19666 standard test. When burning in 950-1000℃ flame for 3 hours, the cable can still maintain the integrity of the circuit without short circuit or open circuit. This means that in the event of a fire, the cable can continue to supply power to key facilities such as emergency lighting and fire-fighting equipment, striving for valuable time for personnel evacuation and fire rescue. At the same time, the cable releases less smoke and toxic gases during combustion, meeting the environmental protection requirements of fire safety.
Operating Temperature Range: The operating temperature range of the cable is -15℃ to 70℃. In low-temperature environments, the cable will not become brittle and crack due to cold, and still maintain good Flexibility and electrical performance; in high-temperature environments, the material will not soften and deform, ensuring that the insulation performance and fire resistance are not affected. This wide temperature range characteristic enables the cable to adapt to different climate regions and complex working environments.
High-Rise Building Field:
Emergency Lighting System: In high-rise buildings, the emergency lighting system is an important guarantee for personnel evacuation in case of fire. This cable can be used as the Power Supply Cable for emergency lighting fixtures. In case of fire, even if the ambient temperature rises sharply, the cable can still maintain normal power supply, ensuring that emergency indicator lights, evacuation lights and other equipment work normally, guiding the evacuation direction for personnel.
Fire Pump Power Supply: Fire pumps are the core equipment for fire fighting and rescue, and their normal operation is directly related to the effect of fire fighting. This cable can be used for the power supply circuit of fire pumps, continuously providing power to the pumps during the fire, ensuring that the pumps can start and operate normally, extinguishing the fire in time, and controlling the spread of the fire.
Smoke Exhaust Fan Power Supply: Smoke exhaust fans can effectively remove the thick smoke generated by the fire, improving the evacuation and fire fighting environment. This cable supplies power to the smoke exhaust fan, ensuring that the smoke exhaust fan can work continuously in case of fire, reducing the harm of smoke to personnel, and creating favorable conditions for rescue work.
Elevator Emergency Power Supply Circuit: Elevators in high-rise buildings need to have the emergency landing function in case of fire. This cable can be used for the elevator emergency power supply circuit, ensuring that the elevator can land safely according to the preset program in case of fire, avoiding personnel being trapped.
Crowded Places:
Hospitals: Hospitals are crowded places with many vulnerable groups, and have extremely high requirements for the reliability and safety of power supply. This cable can be used for the main distribution lines of hospitals, emergency power supplies in operating rooms, power supply circuits of intensive care unit equipment, etc., ensuring that key medical equipment can continue to operate in emergency situations such as fires, and protecting the lives of patients.
Shopping Malls: Shopping malls have a large flow of people and many flammable items, so the fire risk is high. This cable can be used for the power supply lines of emergency lighting, fire alarm systems, automatic sprinkler systems, etc. in shopping malls. In case of fire, it ensures that these systems work normally, sends out alarm signals in time, starts fire-fighting equipment, and guides personnel to evacuate.
Stations and Airports: Stations and airports are transportation hubs with frequent personnel flow. Once a fire occurs, the consequences are serious. This cable can be used for the emergency lighting in waiting halls and 候机 halls, broadcasting systems, emergency power supply circuits of security inspection equipment, etc., ensuring that in emergency situations, it can provide clear evacuation guidance and necessary information broadcast for passengers.
Industrial Plants:
High-Temperature Environment Control Circuits: In some industrial plants (such as metallurgy, chemical industry, etc.), there are local high-temperature environments, which ordinary cables cannot withstand. This cable is suitable for control circuits in these environments, such as temperature control and pressure control circuits of equipment, which can resist the impact of local high temperature on the cable and ensure the stable transmission of control signals.
Power Lines: Medium-sized power equipment in industrial plants (such as conveyors, mixers, etc.) need stable power supply. This cable can be used as its power line, which can still maintain the short-term operation of the equipment in case of sudden situations such as fire, facilitating personnel to carry out emergency treatment and reducing equipment damage and production losses.
Enclosed Spaces:
Subways: Subways are in underground enclosed environments, so it is difficult to evacuate and rescue in case of fire. This cable can be used for the traction power supply auxiliary circuits, emergency lighting, power supply lines of ventilation systems, etc. of subways. In case of fire, it ensures the normal operation of key systems, striving for time for passenger evacuation and train dispatching.
Tunnels: The space in tunnels is narrow and the ventilation conditions are poor, so the fire spreads quickly. This cable can be used for the lighting systems in tunnels, power supply circuits of fire-fighting facilities, etc. In case of fire, it ensures that the lighting and fire-fighting equipment work normally, providing protection for the evacuation of vehicles and personnel.
Conductor Material: The conductor is made of high-purity electrolytic copper with a purity of more than 99.95%. High-purity copper has extremely low resistivity, which can reduce energy loss during current transmission and improve power transmission efficiency. At the same time, high-purity copper has good mechanical properties, with high ductility and toughness, and is easy to be processed into single-strand or multi-strand stranded structures. The single-strand conductor has a simple structure and high mechanical strength, suitable for fixed laying scenarios that are not easy to bend; the multi-strand stranded structure enhances the flexibility of the conductor, making it easy to bend and lay in complex wiring environments, such as in narrow spaces such as wall gaps and inside equipment, and can also reduce conductor fatigue damage caused by vibration, prolonging the service life of the cable.
Insulation Layer Material: The insulation layer is made of flame-retardant PVC material with special fire-resistant additives. This material not only has good insulation performance, but also has excellent flame-retardant and fire-resistant properties. When encountering an open flame, it can inhibit the spread of the flame and slow down the burning speed of the cable. At the same time, it has strong moisture resistance, and will not reduce its insulation performance due to moisture in humid environments (such as basements, bathrooms, etc.), and can maintain a stable insulation effect for a long time. In addition, the insulation layer also has certain chemical corrosion resistance, which can resist the erosion of mild oil stains, acid mist and other chemical substances, protect the conductor from damage, and ensure the stable operation of the cable in complex environments.
Outer Sheath Material and Color: The outer sheath is made of red or black fire-resistant PVC material. These colors have obvious identification, which is convenient for users to identify the type and purpose of the cable. Red is usually used to identify fire-fighting related cables, and black is a more general color. In addition to fire resistance, the outer sheath material also has good wear resistance and aging resistance, which can protect the internal insulation layer and conductor from external mechanical damage and environmental factors. During long-term use, it is not easy to crack, fade, etc., prolonging the service life of the cable. The outer sheath surface is printed with clear model (NHBV), specification (1.5-6mm²), rated voltage (450/750V), fire-resistant logo, manufacturer, production date and other information. These information are convenient for users to identify the parameters and sources of the cable, and also conducive to product traceability and quality control.
Style: The cable has an overall circular structure, which has many advantages. The circular structure makes the thickness of the insulation layer and outer sheath of the cable uniform, and the physical properties and electrical properties in all directions are consistent, avoiding local weak links caused by irregular shapes, and improving the overall stability and reliability of the cable. During laying, circular cables are easier to be laid through pipes, cable trays or open laying, which can adapt to different installation methods and improve construction efficiency. At the same time, the circular style is also convenient for winding and storing the cable, saving storage space and facilitating transportation and management.
Copper Purification: First, high-quality copper raw materials (such as electrolytic copper ingots) are selected for purification. Through electrolytic refining process, impurities in copper (such as iron, lead, zinc, sulfur, etc.) are removed, so that the purity of copper reaches more than 99.95%. High-purity copper is the key to ensuring the conductivity of the cable. This step requires precise control of electrolytic current, temperature, time and other parameters to ensure the purification effect. The purified copper material has uniform texture and excellent conductivity, laying a good foundation for subsequent processing.
Precision Wire Drawing: The purified copper material is heated to an appropriate temperature and drawn into Copper Wires with the required diameter through a wire drawing machine for multiple drawing processes. During the wire drawing process, it is necessary to strictly control the drawing speed, mold size and cooling method to ensure that the copper wire has uniform diameter, smooth surface, and no cracks, scratches, burrs and other defects. For multi-strand Stranded Conductors, multiple copper wires need to be drawn into the same diameter to ensure uniform structure and stable performance of the stranded conductor.
Conductor Stranding (for Multi-Strand Structure): For multi-strand Stranded Conductors, precision stranding equipment is used for stranding according to a certain pitch. During stranding, the tension of each strand of copper wire needs to be strictly controlled to ensure that the stranded conductor has high roundness and tight structure. The size of the stranding pitch will affect the flexibility and mechanical strength of the conductor, which needs to be reasonably designed according to the specification and purpose of the cable. The stranded conductor not only has good flexibility, but also can bear certain mechanical stress, adapting to different laying environments.
Fire-Resistant Insulation Layer Extrusion: A fire-resistant insulation layer is extruded outside the conductor, using flame-retardant PVC with fire-resistant additives. First, PVC particles and fire-resistant additives are mixed uniformly in a certain proportion and dried to remove moisture in the material to prevent bubbles in the insulation layer. Then, the dried mixture is put into an extruder for heating and melting, and the molten material is evenly wrapped on the surface of the conductor through an extrusion die. During the extrusion process, it is necessary to strictly control the extrusion temperature (usually 160-190℃), speed and pressure to ensure that the insulation layer has uniform thickness, smooth surface, and is closely combined with the conductor, without defects such as bubbles, wrinkles and depressions. The thickness of the insulation layer depends on the specification of the cable to ensure that its insulation performance and fire resistance meet the design requirements.
Fire-Resistant Outer Sheath Extrusion: A fire-resistant outer sheath is extruded outside the insulation layer, using fire-resistant PVC as the material. The color of the outer sheath (red or black) is determined according to product standards and customer requirements. The extrusion process is similar to that of the insulation layer, and various parameters need to be accurately controlled to ensure uniform thickness, consistent color of the outer sheath, and close combination with the insulation layer. The outer sheath not only protects the insulation layer and conductor, but also has an identification function, and the printed information on its surface needs to be clear and firm.
High-Temperature Curing: The cable after extruding the outer sheath needs to be subjected to high-temperature curing treatment. It is put into a curing furnace and heated at a certain temperature (usually 80-100℃) for a certain time. High-temperature curing can make the PVC material fully cross-link, improve its mechanical properties, heat resistance and fire resistance, and ensure stable performance of the cable during long-term use.
Quality Inspection: Each batch of cables undergoes multiple strict quality inspection procedures during production to ensure that the product quality meets the standards. The main inspection items include:
Conductor resistance test: Detect the DC resistance of the conductor to ensure its conductivity meets the requirements.
Insulation resistance test: Measure the insulation resistance of the insulation layer to verify its insulation performance.
Voltage withstand test: Test under specified voltage to check the voltage withstand capacity of the cable.
Fire resistance test: According to GB/T 19666 standard, test the fire resistance time and circuit integrity of the cable in a simulated fire environment (950-1000℃ flame).
Measurement of insulation layer and outer sheath thickness: Ensure that their thickness meets the design standards.
Appearance quality inspection: Check whether the surface of the cable is smooth, whether there is damage, and whether the printing is clear.
Printing Identification: The outer sheath surface of the cable is printed with product model, specification, rated voltage, fire-resistant logo, manufacturer, production date, execution standard and other information. Printing uses special printing equipment and wear-resistant ink to ensure that the handwriting is clear, firm and not easy to fall off, which is convenient for users to identify and trace product information.
Packaging Materials: According to the specification and length of the cable, different packaging materials are used. For small-section, short-length cables (such as 1.5mm², 2.5mm² with length below 100 meters), hard cardboard boxes are usually used for packaging. Hard cardboard boxes have certain strength and toughness, which can protect the cables from slight extrusion and collision. Meanwhile, they are light in weight, facilitating handling and transportation. For large-section, long-length cables (such as 4mm², 6mm² with length 100 meters and above), wooden reels are adopted for packaging. The wooden reels are made of high-quality hardwood, which has undergone drying treatment, featuring high strength and stability. They can bear the weight of the cables and prevent deformation due to extrusion during transportation and storage. The edges of the reels are equipped with metal edge protectors to enhance the impact resistance of the reels and avoid damage during handling. In addition, whether it is carton or wooden reel packaging, the outer layer of the cable will be wrapped with a moisture-proof and wear-resistant plastic film to prevent the cable from being damaged by dust, moisture and mechanical factors.
Packaging Methods:
Carton Packaging: The cables are neatly wound into coils, and the length of each coil is determined according to customer requirements and industry practices (such as 50 meters, 100 meters, etc.). During the winding process, the winding tension is controlled to ensure that the cables are arranged tightly and neatly without distortion or overlapping. Then, the coiled cables are put into hard cardboard boxes, and buffer materials (such as foam, paper scraps, etc.) are filled in the boxes to prevent the cables from shaking inside the boxes. Finally, the cartons are sealed, and labels are pasted on the surface of the cartons.
Wooden Reel Packaging: The cables are neatly wound on wooden reels according to the specified length. During the winding process, the tension is also controlled to ensure that the cables are arranged in order. After winding, the reels and cables are wrapped with plastic film as a whole to ensure good sealing. Labels are fixed on the side of the reels, indicating relevant product information. For multiple reels of cables transported together, the reels are neatly stacked on pallets and firmly fixed with strapping to prevent shaking and collision during transportation.
Packaging Marks: The marks on the packaging are clear and standardized, containing rich product information and warning contents. The labels indicate the product model (NHBV), specification (1.5-6mm²), rated voltage (450/750V), length, production date, batch number, manufacturer, execution standard and other information. At the same time, some important warning signs are printed, such as "Fireproof and Moisture-proof", "Handle with Care", "Do Not Stack Heavily", "Keep Away from Fire Sources", etc., reminding transportation, storage and use personnel to pay attention to relevant matters and avoid damaging the cables due to improper operation. For export products, the packaging marks will also add corresponding language descriptions and certification marks according to the requirements of the destination country.
Transportation Methods: According to the customer's geographical location, order quantity and delivery time limit, appropriate transportation methods are selected.
Road Transportation: Suitable for domestic short-distance transportation (such as within a radius of 500 kilometers). Large trucks (such as semi-trailers) are used for transportation. Road transportation has the advantages of high flexibility and being able to reach the destination directly, which is suitable for small batches and urgent orders.
Railway Transportation: Suitable for long-distance transportation or large-volume orders. Transported by railway freight cars, it has the characteristics of large transportation volume, relatively low cost and good stability.
Sea Transportation: Suitable for export orders with large quantities. Transported by containers, it has low cost but long transportation time.
Air Transportation: Suitable for urgent export orders. It is fast and can deliver products to customers quickly, but the cost is relatively high.
Transportation Precautions:
During loading and unloading, professional loading and unloading equipment (such as forklifts, cranes) must be used, and operated by professional personnel. When loading and unloading, handle with care to avoid severe impact, extrusion and dragging of the cable reels or cartons, so as to prevent damage to the reels, cartons and rupture of the cable outer sheath. When using forklifts to load and unload wooden reels, the fork teeth should be inserted into the center hole of the reel to ensure the stability of the loading and unloading process.
During transportation, the cable reels or cartons must be firmly fixed on the transport tool to prevent rolling, collision and falling during driving. For multiple reels or cartons stacked for transportation, buffer materials (such as rubber pads, cardboard) should be placed between layers to avoid friction and collision between them.
The transport vehicle or container should be kept clean and dry to prevent the cable from being contaminated by oil, moisture, etc. At the same time, sun protection and rain protection measures should be taken. Tarpaulins can be used to cover the cables to prevent them from being exposed to direct sunlight for a long time or getting wet by rain, which may affect the performance of the cables.
During transportation, the cables should be kept away from flammable, explosive and corrosive substances to avoid chemical reactions that may damage the cables.
The driver should drive carefully, avoid sudden braking, sharp turning and other operations, and reduce the impact on the cables. For long-distance transportation, the transport personnel should regularly check the condition of the cables and packaging. If any damage or abnormality is found, they should take timely measures and report to the company.
Transportation Tracking: The company has established a sound transportation tracking system. Customers can query the transportation status of the cables through the company's official website, mobile APP or by calling the customer service hotline. The system will display the real-time location of the goods, the transportation progress, the estimated arrival time and other information. The customer service personnel will also actively feedback the transportation information to the customer according to the transportation schedule, so that the customer can know the dynamics of the goods in time and make receiving preparations.
Shipment Procedures:
Order Review: After receiving the customer's order, the sales department will review the order details, including product model, specification, quantity, delivery address, delivery time, payment status, etc., to ensure that the order information is accurate and complete.
Inventory Check: The warehouse department will check the inventory according to the order requirements. If the inventory is sufficient, it will arrange the goods preparation work; if the inventory is insufficient, it will promptly notify the production department to arrange production, and the production department will formulate a production plan according to the order priority to ensure delivery on time.
Product Picking and Inspection: The warehouse staff will pick the corresponding cables according to the order. After picking, the quality inspection personnel will conduct random inspection on the picked products, including checking the appearance, specification, length, packaging, etc. of the cables, and sampling some products for performance tests (such as insulation resistance test, flame retardant test) to ensure that the products meet the quality standards and order requirements.
Packaging and Labeling: The qualified products will be packaged according to the specified packaging methods, and the labels will be pasted correctly to ensure that the information on the labels is consistent with the product and order information.
Shipping Documentation: The logistics department will prepare the shipping documents, including waybill, commercial invoice, packing list, product certificate of conformity, quality inspection report, etc. These documents are complete and accurate to ensure smooth customs clearance and customer acceptance.
Logistics Arrangement: The logistics department will contact the cooperative logistics company to confirm the transportation method, vehicle, shipping time and other details, and arrange for the goods to be delivered to the designated location of the logistics company.
Information Notification: After the goods are shipped, the sales department will notify the customer of the shipment information (including waybill number, logistics company, estimated arrival time, etc.) via SMS, email or phone call within 24 hours, so that the customer can track the goods in time.
Shipment Time: For products in stock, shipment will be completed within 2-3 working days after the order is confirmed and the payment is received; for products that need to be produced, the shipment time will be determined according to the production cycle, which is generally 7-15 working days. For urgent orders, the company will start the emergency production mechanism, give priority to arranging raw material procurement and production, and shorten the production cycle as much as possible to meet the customer's urgent needs.
Sample Application: Customers can apply for samples through the company's official website, email, phone call or online customer service. When applying, customers need to provide basic information such as company name, contact person, contact information, required sample model and specification, and application purpose. The company's sales staff will reply to the customer within 1-2 working days after receiving the sample application, confirm the relevant information, and inform the customer of the sample fee, freight and other matters.
Sample Provision: For standard models (1.5mm², 2.5mm², 4mm², 6mm²), the company can provide samples free of charge, but the customer needs to bear the freight. For special specifications or customized samples, the company will charge a certain sample fee (which can be deducted from the subsequent bulk order payment), and the customer also needs to bear the freight. The length of the sample is usually 1-5 meters, which is convenient for customers to conduct performance tests and appearance inspection.
Sample Delivery: After the customer confirms the sample details and pays the relevant fees (if any), the company will ship the samples within 3-5 working days. The samples are packaged in small cartons, and the shipping documents (such as sample confirmation form) are attached. The customer can track the sample logistics information through the waybill number provided by the company.
Sample Feedback: After receiving the samples, if the customer has any questions about the samples' performance, quality, etc., they can contact the company's technical staff or sales staff. The company will provide professional technical support and answers to help customers better understand the product.
Quality Guarantee Period: The quality guarantee period of the fire-resistant PVC cable NHBV 1.5-6mm² - 450/750V is 12 months from the date of delivery. During the guarantee period, if the product has quality problems (such as insulation failure, conductor damage, etc.) due to manufacturing defects, the company will provide free replacement or repair services.
Technical Support: The company has a professional technical team to provide customers with technical support, including product selection guidance, installation suggestions, use precautions, fault diagnosis, etc. Customers can consult the technical team through phone calls, emails or on-site visits, and the technical team will reply and solve the problem within 24 hours.
Complaint Handling: If the customer has any complaints about the product quality, delivery, service, etc., they can feedback to the company's after-sales service department through the complaint hotline or email. The after-sales service department will record the complaint content and conduct an investigation. A handling result will be given to the customer within 3-5 working days, and corresponding solutions will be formulated according to the investigation result to ensure customer satisfaction.
Return and Exchange Policy: If the product has quality problems that cannot be repaired during the quality guarantee period, or if the product model, specification, etc. do not match the order requirements due to the company's reasons, the customer can apply for return or exchange. The company will arrange for the return or exchange of the product after confirming the situation, and bear the relevant freight. For returns or exchanges caused by the customer's own reasons (such as wrong model selection, over-order), the customer needs to bear the freight and a certain handling fee, and the product must be in an unused and undamaged state.
Regular Follow-up: After the customer receives the product, the company's after-sales service personnel will conduct regular follow-up visits (1 month, 3 months, 6 months after delivery) to understand the product's use status and customer's opinions and suggestions. For problems found during the follow-up, the company will actively deal with them to improve customer satisfaction.
Hongtai Cable Technology Co., Ltd
Электронная почта: export@qlcables.com
sales@qlcables.com
Тел/WhatsApp:+86-18032066271
Добавить ： Зона промышленного развития Сяоку, округ Нинджин, Сингтай -Сити ， провинция Хэбей, Китай
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