Details of 8mm² PVC Insulated Stranded Copper Wire (Compliant with Philippine PNS 189:2002 Standard)
I. From the Perspective of the Product Itself
(I) Specification Parameters
Conductor Specifications
The conductor of this 8mm² PVC insulated
Stranded Copper Wire adopts multi-strand stranded copper wires, and this design is not accidental. Solid
Copper Strands are prone to breaking when bent, while the multi-strand stranded structure can greatly enhance the
Flexibility of the wire. Specifically, the number of conductor strands is carefully designed. On the premise of ensuring an 8mm² cross-sectional area, each copper strand has a small diameter, enabling the entire conductor to easily handle various complex bending situations during wiring.
The purity of the
Copper Conductor is a key factor affecting conductivity. The copper used in this product has a purity of over 99.9%. High-purity copper can effectively reduce resistance. According to relevant test data, at 20°C, its conductor resistance does not exceed 2.19Ω/km, which is much lower than the industry average. This means that energy loss during current transmission will be significantly reduced.
Insulation Layer Parameters
The insulation layer is made of high-quality polyvinyl chloride (PVC) material, and its thickness strictly complies with the PNS 189:2002 standard. For 8mm² wires, the average thickness of the insulation layer is not less than 0.8mm, and the minimum thickness is not less than 0.6mm. This thickness design ensures good insulation performance, effectively isolating the conductor from the external environment and preventing electric leakage accidents.
The temperature resistance performance of the
PVC Insulation layer is also one of its important parameters. The insulation layer of this product is divided into two temperature resistance grades, 70°C and 90°C, to adapt to different electrical environments. With a temperature resistance grade of 70°C, the wire can work stably in an environment where the long-term temperature does not exceed 70°C; the wire with a 90°C temperature resistance grade can cope with higher temperature scenarios, meeting the needs of some special electrical equipment.
Overall Dimensions and Weight
The overall diameter of the wire (including the insulation layer) varies slightly according to different temperature resistance grades. The overall diameter of the wire with a 70°C temperature resistance grade is approximately 6.5mm, and that with a 90°C temperature resistance grade is approximately 6.8mm. In terms of weight per kilometer, the 70°C temperature resistance grade is approximately 102kg, and the 90°C temperature resistance grade is approximately 105kg. This weight parameter has important reference value for load calculation during transportation and installation.
Current-Carrying Capacity
Current-carrying capacity is the maximum current that a wire can carry under safe operation conditions. The current-carrying capacity of this 8mm² PVC insulated stranded copper wire varies in different environments. When laid in air at an ambient temperature of 30°C, the current-carrying capacity of the wire with a 70°C temperature resistance grade is approximately 45A, and that with a 90°C temperature resistance grade is approximately 55A; when laid underground with a soil temperature of 25°C, the current-carrying capacity of the 70°C temperature resistance grade is approximately 50A, and that of the 90°C temperature resistance grade is approximately 60A. These data provide an important basis for electrical designers in selecting wires.
(II) Characteristic Applications
Civil Building Field
In civil buildings, this wire has a wide range of applications. For high-power household appliances such as air conditioners, electric water heaters, and microwave ovens, which require a large current during operation, the 8mm² cross-sectional area can meet their power needs, ensuring the normal operation of these appliances. For example, a 3-horsepower air conditioner has a rated power of approximately 2.2kW, and under a voltage of 220V, the operating current is approximately 10A. The current-carrying capacity of this wire is much larger than this, which can provide stable power supply for the air conditioner.
In addition, this wire can also play an important role in the wiring from the main switch to each branch switch in the home. It can be used as the main line to distribute power from the main switch to each branch, ensuring the overall stability of household electricity use. At the same time, due to its good flexibility, during home decoration, it can easily pass through narrow spaces such as walls and floors, reducing construction difficulty.
Commercial Venue Field
In commercial venues, such as small supermarkets, convenience stores, offices, etc., this wire can be used as the power supply line for small power equipment. Equipment such as small shelf elevators, air conditioner outdoor units, and water dispensers can all use this wire for power supply. In offices, a large number of office equipment such as computers, printers, and copiers are used centrally, requiring stable power supply. This wire can meet the simultaneous operation needs of these equipment, avoiding tripping and other problems caused by insufficient wire capacity.
This wire can also be used in the lighting systems of commercial venues. For some high-power lighting fixtures, such as spotlights and chandeliers, using this wire can ensure their normal lighting and reduce damage to the fixtures caused by line problems.
Industrial Field
In the industrial field, this wire can be used for power transmission in control circuits or auxiliary equipment. In the control circuits of some small mechanical equipment, it is necessary to transmit control signals and a small amount of power. The insulation and conductivity of this wire can meet this requirement, ensuring the accurate transmission of control commands.
At the same time, for some auxiliary equipment, such as small water pumps, fans, conveyors, etc., this wire can be used as their power supply line to provide stable power for these equipment, ensuring the normal operation of industrial production. In some industrial environments with high requirements for wire flexibility, such as where the wiring of the production line needs to be frequently bent and moved, the multi-strand stranded design of this wire can well adapt to this situation, extending the service life of the line.
(III) Material and Style
Conductor Material
The conductor is made of high-purity electrolytic copper, which is pure copper obtained through electrolytic refining and has excellent electrical and mechanical properties. Compared with other copper alloys, electrolytic copper has higher conductivity, which reduces energy loss during current transmission. At the same time, electrolytic copper has good ductility and plasticity, which is convenient for stranding processing, ensuring the tight combination between multiple copper strands and improving the overall strength of the conductor.
Insulation Layer Material
The PVC material used in the insulation layer is a specially formulated and modified polyvinyl chloride. This modified PVC material not only has good insulation performance but also has certain oil resistance and chemical corrosion resistance. In environments that may come into contact with oil stains or a small amount of chemical substances, such as kitchens and small factory workshops, the insulation layer can maintain stable performance and is not easily corroded and damaged.
In addition, this PVC material also has good flame retardancy. When encountering an open flame, it can self-extinguish and will not continue to burn, thereby reducing the risk of fire spread. This characteristic is of great significance for ensuring the safety of electrical equipment and personnel.
Style Design
The wire has a variety of appearance colors, commonly including black, white, gray, etc. Users can choose the appropriate color according to different usage scenarios and wiring needs. Color differentiation helps identify wires of different circuits during wiring, facilitating later maintenance and repair.
The wire also has various packaging forms, including coil and reel packaging. Coiled wires are usually suitable for large-scale engineering construction, with each coil having a length of 100 meters or 500 meters; reel wires are more suitable for small-scale maintenance and home decoration, with each reel having a length of 10 meters, 20 meters, or 50 meters. Different packaging styles provide users with more choices to meet the needs of different scenarios.
(IV) Production Process
Copper Wire Stranding Process
Copper wire stranding is one of the key links in the production process, using advanced bunch stranding technology. First, multiple small-diameter copper wires are arranged according to a certain stranding direction and pitch, and then they are stranded together by a stranding machine. The selection of stranding pitch is very important. An appropriate pitch can ensure that the
Stranded Conductor has good flexibility and roundness.
During the stranding process, it is necessary to strictly control the stranding tension to ensure that each copper wire is subjected to uniform tension, avoiding copper wire breakage or loose conductor structure due to uneven tension. At the same time, the stranded conductor needs to undergo appearance inspection and size measurement to ensure that it meets relevant standard requirements.
Insulation Layer Extrusion Process
The insulation layer is extruded using an advanced extruder. First, PVC raw materials are added to the hopper of the extruder, heated and melted, and then the melted PVC material is pushed by the screw to the surface of the conductor to form a uniform insulation layer.
During the extrusion process, it is necessary to strictly control parameters such as extrusion temperature, extrusion speed, and traction speed. Excessively high extrusion temperature will cause decomposition of the PVC material, affecting the performance of the insulation layer; excessively low extrusion temperature will lead to poor plasticization of the PVC material and an unsmooth surface of the insulation layer. The matching of extrusion speed and traction speed is also very important, as they directly affect the thickness uniformity of the insulation layer.
The extruded wire needs to be cooled in a cooling water tank to quickly solidify and shape the insulation layer. After cooling, the wire also needs to undergo insulation layer thickness measurement, appearance inspection, and voltage resistance testing to ensure that the quality of the insulation layer meets standard requirements.
Finished Product Inspection Process
Finished product inspection is the last checkpoint to ensure product quality. First, a comprehensive inspection of the wire's appearance is carried out to check for defects such as insulation layer damage, exposed conductors, and surface scratches. Then, the dimensions of the wire are measured, including conductor cross-sectional area, insulation layer thickness, and overall diameter, to ensure they are within the allowable range of the standard.
Next, electrical performance tests are conducted, mainly including conductor resistance test and voltage resistance test. The conductor resistance test is carried out using a DC bridge to measure the DC resistance of the wire, ensuring it meets relevant standard requirements. The voltage resistance test involves placing the wire under a certain voltage for a certain period of time to observe if there is a breakdown phenomenon, so as to test the voltage resistance performance of the insulation layer.
In addition, mechanical performance tests such as tensile test and bending test are also required. The tensile test is used to test the tensile strength and elongation at break of the wire, and the bending test is used to test the flexibility and bending resistance of the wire. Only wires that pass all inspection items can be judged as qualified products and allowed to leave the factory.
II. From the Perspective of General Product Information
(I) Packaging
Packaging Materials
To ensure that the product is not damaged during transportation and storage, the wire uses high-quality packaging materials. The reels for coiled wires are made of high-strength wood or plastic materials, which have good pressure resistance and wear resistance. The surface of the reel is treated to be smooth and burr-free, which can avoid scratching the insulation layer of the wire during handling.
Reel wires are packaged using plastic reels and plastic packaging bags. Plastic reels are lightweight and durable, which can protect the wire from damage during winding; plastic packaging bags have good moisture-proof and dust-proof properties, which can prevent the wire from being affected by moisture and dust during storage.
Packaging Methods
Coiled wires are packaged by neatly winding the wire on the reel, then wrapping the entire reel and wire with plastic film to play a moisture-proof and dust-proof role. Outside the plastic film, a paper or plastic protective cover is also placed to further enhance the protective performance of the packaging. Handles for easy handling are installed on both sides of the reel, facilitating loading, unloading, and transportation.
Reel wires are packaged by winding the wire on a plastic reel and then putting it into a plastic packaging bag for sealed packaging. For small-sized reel wires, multiple reel wires can be placed in a carton, and the inside of the carton is padded with buffer materials such as foam plastic or bubble film to prevent the wires from colliding with each other and being damaged during transportation.
Packaging Labels
Each package is printed with clear and standardized labels, including product name, specification model, length, production date, production batch number, implementation standard, manufacturer's name, address, contact information, etc. These labels not only facilitate users to identify and purchase products but also provide an important basis for product traceability.
On the packaging of products exported to the Philippines, in addition to the above information, there will be labels and text descriptions that meet local requirements in the Philippines, such as the PNS 189:2002 certification mark, to ensure that the products can smoothly enter the Philippine market.
(II) Transportation
Transportation Methods
According to the quantity of products, transportation distance, and customer requirements, the wire can be transported by various means. For short-distance domestic transportation or small batches of goods, road transportation is usually adopted, which has the characteristics of high flexibility and fast transportation speed, and can deliver products to customers in a timely manner.
For long-distance transportation or large batches of goods, railway transportation can be used. Railway transportation has the advantages of large transportation capacity, low cost, and good stability, and is suitable for long-distance transportation. For products exported to the Philippines, sea transportation is mainly used. Although sea transportation takes a long time, it has large transportation capacity and low cost, which can meet the needs of large-scale exports.
Transportation Precautions
During transportation, the following points need to be noted: First, avoid severe impact and extrusion on the wire to prevent reel deformation, damage to the wire insulation layer, or conductor breakage. When loading goods, the wires should be placed neatly and fixed with ropes or other fixing devices to prevent movement and collision during transportation.
Second, pay attention to moisture, sun protection, and high temperature prevention. During transportation, the wire should be avoided from getting wet or soaked in water to prevent damage to the insulation layer due to moisture. At the same time, the wire should be avoided from being exposed to sunlight for a long time or in a high-temperature environment to prevent aging and deterioration of the PVC insulation layer.
Finally, during transportation, good product identification and recording work should be done to ensure that the products can be delivered to customers accurately. For exported products, customs declaration, inspection, and other procedures must be handled in accordance with relevant regulations to ensure that the products can pass customs smoothly.
(III) Shipping
Shipping Process
After the customer places an order, the company's sales department will promptly transmit the order information to the production department and the warehouse department. The production department will organize production according to the order requirements to ensure that the products can be produced on time. The warehouse department will inspect and store the produced products and prepare goods according to the order requirements.
After the goods are prepared, the warehouse department will feed back the product information to the sales department, and the sales department will confirm the shipping time, location, transportation method, and other information with the customer. Then, the warehouse department will arrange for the delivery and transportation of the goods and promptly notify the customer of the shipping information, including the waybill number, contact information of the transportation company, etc., to facilitate the customer to query the transportation status of the goods.
Shipping Time
For products in stock, they can usually be shipped within 1-3 working days after the customer places the order. For customized products, the shipping time depends on the production cycle of the product, which is generally 7-15 working days. The company will try its best to shorten the production cycle to ensure that the products can be shipped as soon as possible to meet customer needs.
Before shipping, the company will re-inspect the products to ensure that the product quality is qualified. At the same time, the packaging and labeling work will be done in accordance with customer requirements to provide protection for the smooth transportation of the products.
(IV) Samples
Sample Provision
To facilitate customers to understand the performance and quality of the product, the company can provide free samples for customers. Customers only need to submit a sample request to the company's sales department and provide detailed contact information and address, and the company will send the samples within 1-3 working days.
The specifications and styles of the samples are consistent with those of mass-produced products, which can truly reflect the quality and performance of the products. After receiving the samples, customers can conduct relevant tests and inspections, such as testing the conductivity of the conductor and the voltage resistance of the insulation layer, to determine whether the product meets their needs.
Sample Fees and Refunds
For samples of ordinary specifications, the company usually provides them for free, but customers need to bear the transportation costs of the samples. For samples of special specifications or customized samples, the company may charge a certain sample fee, and the specific fee depends on the specifications and quantity of the samples. If the customer's subsequent order reaches a certain quantity, the company will refund the sample fee to the customer.
Sample Feedback
After receiving the samples and conducting tests, if customers have any opinions or suggestions on the samples, they can promptly feedback to the company's sales department. The company will carefully listen to customers' feedback and make improvements and adjustments according to customers' needs to improve product quality and applicability.
(V) After-Sales Service
Quality Assurance
The company provides quality assurance for this 8mm² PVC insulated stranded copper wire, with a warranty period of 18 months from the date of product delivery. During the warranty period, if the product has quality problems caused by non-human factors, the company will be responsible for replacing the product or repairing it for free.
After-Sales Service Response
If customers encounter any problems during the use of the product, they can contact the company's after-sales service department by phone, email, online customer service, etc. The after-sales service department will respond within 24 hours after receiving the customer's feedback and provide solutions according to the specific situation of the problem.
For some simple problems, after-sales service personnel will provide guidance and answers to customers by phone or email; for more complex problems, the company will arrange professional technical personnel to handle them on-site to ensure that the problems can be solved in a timely manner.
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