I. From the Perspective of the Product Itself
(1) Specification Parameters
The 35mm² stranded
Copper PVC insulated cable is a high-
Performance Cable specially designed for the field of power distribution. It has rigorous and detailed settings in terms of specification parameters, fully meeting the stringent requirements of power transmission.
The rated voltage of this cable is 450/750V, and this voltage level enables it to work stably in various power distribution scenarios, providing a reliable guarantee for efficient power transmission. It strictly complies with the IEC 60228 Class 2 standard, and adherence to this standard ensures the universality and standardization of the product in the international market.
In terms of conductor structure, it adopts a Class 2 stranded
Copper Conductor design, which is composed of multiple strands of fine
Copper Wires stranded according to specific rules. Specifically, the conductor of the 35mm² cable is composed of multiple fine copper wires with precise diameters. This stranding method is carefully calculated to ensure that the cross-sectional area of the conductor meets the 35mm² specification requirement while endowing the conductor with excellent performance.
The purity of the copper conductor is as high as 99.95% or more, and the excellent purity ensures excellent electrical conductivity. At 20°C, its DC resistance is controlled at a low level, and the specific value is strictly tested and controlled, which can efficiently transmit current, significantly reduce line loss, and ensure the efficiency of power distribution.
The insulation layer is made of polyvinyl chloride (PVC) material, with a precisely designed thickness. This thickness not only meets the requirements of insulation performance but also adapts to the overall structure and service environment of the cable. The withstand voltage strength of the
PVC Insulation layer is not less than 10kV/mm, which can reliably isolate current under the rated voltage of 450/750V and effectively prevent electric leakage accidents. At the same time, its temperature resistance range is -15°C to 70°C, which can adapt to temperature changes in most power distribution environments.
In addition, the cable also meets relevant flame retardant standards, which can effectively delay the spread of flames in vertical burning tests, buying valuable time for personnel evacuation and equipment protection in case of fire in the power distribution system.
(2) Characteristic Uses
With its unique performance and specifications, the 35mm²
Stranded Copper PVC Insulated Cable has extensive and important applications in the field of power distribution, showing significant characteristic uses.
In industrial plants, this cable is often used as the main power distribution line. There are many equipment in industrial plants with large power, which have high requirements for the stability and capacity of power transmission. The 35mm² specification can meet the power demand when a large number of equipment in the plant are running at the same time, ensuring that various production equipment such as machine tools, production lines, and large fans can obtain continuous and stable power supply, thus ensuring the smooth progress of industrial production. Whether it is a heavy industrial plant or a light processing workshop, this cable can be competent for the power transmission task of the main line.
The distribution trunk of large buildings is also an important application scenario for it. With the continuous development of urban construction, large buildings such as office buildings, shopping malls, and hotels are increasing. These buildings have dense electrical equipment and large power loads. As a distribution trunk, the 35mm² cable can efficiently distribute power from the main distribution room of the building to the distribution rooms on each floor and in each area, and then the distribution rooms transmit power to each electrical terminal. It can bear the power load of the entire building, ensuring the normal operation of lighting, air conditioning, elevators, fire-fighting equipment, etc., and providing reliable power guarantee for the work and life of people in the building.
The connection between medium-sized distribution cabinets is also inseparable from the 35mm² stranded
Copper PVC insulated cable. In the power distribution system, distribution cabinets are the core link of power distribution and control, and the connection between medium-sized distribution cabinets requires stable and reliable cables to transmit power. This cable can meet the demand for large current transmission between distribution cabinets, ensure the smooth distribution and switching of power between different distribution cabinets, and improve the operation efficiency and safety of the power system.
In addition to the above main application scenarios, the 35mm² cable also plays an important role in the power distribution systems of some large public facilities such as gymnasiums and exhibition halls. These places have large areas, many electrical equipment, and uneven power, and the cable can flexibly adapt to the power demand of different areas to ensure stable power supply.
Whether it is the construction of power systems in new projects or the upgrading of old power distribution lines, the 35mm² stranded copper PVC insulated cable can provide stable and reliable power transmission support, and is an indispensable important product in the field of power distribution.
(3) Material and Style
The 35mm² stranded copper PVC insulated cable has been carefully considered in material selection and style design to ensure the high quality and practicability of the product and meet the special requirements of the power distribution field.
In terms of materials, the conductor is made of high-purity copper with a purity of more than 99.95%. High-purity copper has excellent electrical conductivity, which can reduce losses during current transmission and improve power transmission efficiency. This is crucial for the power distribution system, which can reduce energy waste and improve the economy of the overall system. At the same time, copper has good ductility and toughness, so that copper wires are not easy to break during stranding, ensuring the structural stability of the conductor, and can withstand various external forces during installation and use.
The insulation layer is made of polyvinyl chloride (PVC) material. PVC is an excellent synthetic material with good insulation performance, which can effectively isolate current, prevent electric leakage accidents, and ensure the safe operation of the power distribution system. It also has certain corrosion resistance and oil resistance, which can resist dust, moisture, and slight chemical erosion that may exist in the power distribution environment, ensuring the stable operation of the cable in various complex environments and extending the service life of the cable. In addition, PVC material has good processing performance, which is easy to be made into insulation layers that meet the specification requirements, and can accurately wrap the outside of the conductor to form a uniform and tight protective layer.
In terms of style, the cable adopts a stranded structure design. The 35mm² cable is made of multiple strands of fine copper wires stranded according to specific rules. This stranded style is not randomly designed but has undergone strict calculation and testing to ensure that the cross-sectional area of the conductor accurately reaches 35mm², while ensuring that the conductor has good
Flexibility and mechanical strength. The stranded structure makes the cable more convenient in bending and laying processes, and can adapt to different installation environments, such as inside walls and cable trays.
In terms of appearance, the insulation layer of the cable usually presents a uniform color, commonly black, gray, etc. These colors not only conform to the conventional aesthetics of electrical equipment but also have certain dirt resistance, which can maintain a relatively clean appearance during long-term use, facilitating maintenance and inspection. The overall structure of the cable is compact, with smooth lines, showing a professional and reliable quality.
(4) Production Process
The production process of 35mm² stranded copper PVC insulated cable strictly follows relevant standards and specifications, and adopts a series of advanced production processes to ensure that the quality and performance of the product meet the high requirements of the power distribution field.
In the conductor manufacturing link, first of all, the copper material should be strictly screened to ensure that its purity reaches more than 99.95%. Only high-purity copper materials can meet the requirements of good electrical conductivity of the cable. Then, the copper material is processed into fine copper wires of the required diameter through the wire drawing process. During the wire drawing process, it is necessary to accurately control the speed and tension of the wire drawing machine to ensure that the diameter of the copper wire is uniform and the surface is smooth, which is crucial for the subsequent stranding process. For the fine copper wires required for 35mm² cables, their diameters are accurately calculated to ensure that multiple strands of copper wires can reach a cross-sectional area of 35mm² after stranding.
Next is the stranding process, in which multiple fine copper wires are stranded according to specific rules. During the stranding process, special stranding equipment is needed to ensure that the tension of each copper wire is uniform and the stranding pitch meets the design requirements. The number of strands and stranding mode of the 35mm² cable are carefully designed to ensure that the conductor has good flexibility, mechanical strength, and electrical conductivity. This stranding process can make the conductor dissipate heat evenly when transmitting large currents, avoid local overheating, and enhance the tensile and vibration resistance of the conductor.
The extrusion process of the insulation layer is one of the key links in the production process. The polyvinyl chloride (PVC) material is heated and melted, and then uniformly coated on the surface of the
Stranded Conductor through an extruder to form an insulation layer. During the extrusion process, it is necessary to accurately control the temperature, pressure, and speed of the extruder to ensure that the thickness of the insulation layer is uniform, the surface is smooth, and it is closely combined with the conductor. The thickness of the insulation layer of the 35mm² cable is precisely designed to meet the requirements of its insulation performance and mechanical protection. During the extrusion process, it is also necessary to monitor the quality of the insulation layer in real-time to ensure that there are no defects such as bubbles, impurities, and cracks.
In the production process, a series of quality inspection processes are also required. For example, test the DC resistance of the conductor to ensure that it meets relevant standards and design requirements; detect the voltage resistance performance of the insulation layer to verify its insulation effect and ensure that there is no breakdown phenomenon under the rated voltage; check the overall structure and size of the cable to ensure product consistency and accuracy. In addition, it is also necessary to sample test the flame retardant performance of the cable to ensure that it meets relevant flame retardant standards.
Finally, after cooling, traction, take-up and other process links, the produced cables are sorted and wound to prepare for subsequent packaging and transportation. The entire production process is strictly controlled to ensure that every meter of cable has reliable quality and performance.
II. From the Perspective of General Product Information
(1) Packaging
In order to ensure that the 35mm² stranded copper PVC insulated cable is not damaged during transportation and storage, the product packaging adopts a scientific and reasonable way, fully considering the characteristics of the cable and the requirements of the transportation environment.
Cables are usually packaged in rolls, and the length of each roll varies according to customer needs and actual application scenarios, with common specifications such as 50 meters, 100 meters, and 200 meters. For larger 规格 cables such as 35mm², due to their large weight and volume, the length of each roll will be reasonably set according to the actual situation to facilitate transportation and handling.
In terms of packaging materials, the outer layer is made of tough plastic woven bags or thick plastic films. This material has good moisture-proof, dust-proof, and wear-resistant properties, which can effectively protect the cable from the influence of the external environment, such as preventing rainwater and dust from entering the cable and avoiding scratches and wear on the cable surface. For each roll of cable, a wooden or metal reel is used inside for support. The size and strength of the reel are designed according to the specifications and length of the cable to prevent the cable from being deformed or loose during transportation and ensure the structural integrity of the cable.
In the packaging process, each roll of cable will be strictly sealed. The opening of the plastic woven bag or plastic film is sealed firmly by means of heat sealing, binding, etc., to ensure that it will not be invaded by moisture, dust, and other impurities during storage and transportation. At the same time, relevant information of the product will be clearly marked on the package, such as specification model (35mm² stranded copper PVC insulated cable), rated voltage (450/750V), execution standard (IEC 60228 Class 2), length, production date, manufacturer, contact information, etc. This information not only facilitates customers to identify and check during receiving and using but also facilitates product traceability and quality tracking.
For products transported in batches, pallets are used for centralized packaging. Multiple rolls of cables are neatly stacked on the pallet, and partitions or buffer materials are used between the cable rolls to prevent damage caused by mutual collision and friction. Then, the entire pallet of cables is tightly wrapped and fixed with stretch film to enhance stability during transportation and reduce the risk of damage during handling. In addition, packaging will also take into account environmental protection requirements, and try to use recyclable and degradable materials, in line with the pursuit of green environmental protection in modern society.
(2) Transportation
The transportation process of 35mm² stranded copper PVC insulated cable needs to strictly follow relevant regulations and operating procedures to ensure that the products are delivered to the destination safely and timely, and meet the customer's project schedule requirements.
In terms of transportation mode selection, according to different transportation distances, quantities, and customer needs, various modes such as road transportation, railway transportation, and waterway transportation can be adopted. Road transportation has the characteristics of high flexibility and door-to-door service, and is suitable for short and medium-distance transportation and small-batch goods transportation. For cables of 35mm² specification, road transportation is convenient for loading, unloading, and flexible scheduling during transportation, and can quickly respond to customer needs. Railway transportation is suitable for long-distance and large-batch goods transportation, with the advantages of large transportation capacity, relatively low cost, and good stability, and is suitable for transportation in cross-regional large-scale engineering projects. Waterway transportation is suitable for cross-regional and transnational goods transportation, especially for large quantities of goods, which can effectively reduce transportation costs, but the transportation time is relatively long, suitable for orders with no particularly urgent delivery time requirements.
During transportation, the cables need to be properly fixed and protected. For cables packaged with reels, it is necessary to ensure that the reels are firmly fixed on the transport tools. Usually, ropes, iron chains, etc. are used to closely connect the reels with the carriage or container of the transport vehicle to prevent rolling or collision during transportation. A certain distance should be maintained between the reels to avoid mutual extrusion. For pallet-packaged goods, ropes or other fixing devices should be used to closely connect the pallets with the transport tools to avoid displacement during driving.
At the same time, during transportation, attention should be paid to avoiding the cable from being affected by extreme environments such as direct sunlight, rain, high temperature, and severe cold. In high temperature in summer, sunshade measures should be taken, such as using sunshades or covering with sunshade cloth, to prevent the cable from affecting its performance due to excessive temperature and avoid the PVC insulation layer from softening and deformation due to high temperature. In severe cold in winter, attention should be paid to keeping warm.
Insulation Materials can be used to cover the cable to avoid the insulation layer from becoming brittle and breaking due to low temperature, which affects the insulation performance of the cable. In addition, transport vehicles should drive smoothly, avoiding sudden braking, sharp turning and other operations to prevent the cable from being damaged by severe vibration to the conductor or insulation layer.
Before transportation, the logistics company shall conduct a detailed inspection and verification of the goods to ensure that the specifications, quantity, and packaging of the products meet the order requirements. Check whether the reel is intact and whether the cable is exposed or damaged. During transportation, tracking records shall be made, and the position and transportation status of the goods shall be monitored in real-time through GPS and other positioning systems, and the transportation information of the goods shall be fed back to the customer in a timely manner. After the goods arrive at the destination, they shall be inspected together with the customer, and the handover procedures shall be completed only after confirming that the products are intact. If the goods are found to be damaged, they shall communicate with the relevant parties in a timely manner to negotiate solutions.
(3) Delivery
The delivery process of 35mm² stranded copper PVC insulated cable is rigorous and standardized, aiming to ensure that the products can be accurately and timely sent to customers and ensure that the customer's project progress is not affected.
After the customer places an order, the sales department of the enterprise will promptly transmit the order information to the warehouse and production department. The order information includes the product specification, quantity, delivery date, receiving address, contact person, and contact information. The warehouse department will check the inventory according to the order requirements. If the inventory is sufficient, it will immediately arrange the sorting and packaging of the goods; if the inventory is insufficient, the production department will organize production as soon as possible and formulate a detailed production plan to ensure that the production task is completed within the specified delivery period.
In the process of goods sorting, warehouse staff will strictly select according to the specifications, quantity, and other information on the order to ensure that the delivered goods are consistent with the order requirements. For 35mm² cables, it is necessary to carefully check the length, reel number, and other information of each roll of cable to avoid wrong delivery or missing delivery. After sorting, the goods will be rechecked by a specially assigned person to ensure the accuracy of sorting.
After packaging, the warehouse department will input the goods information into the logistics management system, including product name, specification, quantity, receiving address, contact person, logistics company name, waybill number, etc., to realize the whole-process tracking management of the goods. At the same time, select a suitable logistics company for cooperation. According to factors such as transportation distance, quantity of goods, and the urgency of customers, comprehensively consider the reputation, transportation capacity, and price of the logistics company to ensure that the goods can be delivered safely and timely.
After signing the transportation contract with the logistics company, the goods will be delivered to the logistics company, and relevant transportation procedures will be handled, such as filling in the waybill and handover list. Before delivering the goods, it is necessary to check the goods together with the logistics company to confirm that the packaging of the goods is intact and the quantity is accurate.
At the same time, the enterprise will promptly inform the customer of the delivery information, including the name of the logistics company, waybill number, estimated arrival time, etc., so that the customer can check the transportation status of the goods at any time. Customers can be notified by phone, SMS, email, etc., to ensure that customers can receive relevant information in a timely manner. In case of special circumstances leading to delivery delay during the delivery process, such as bad weather, traffic jams, or production delays, the enterprise will communicate with customers in a timely manner, explain the reasons, and negotiate solutions, such as adjusting the delivery date or giving priority to arranging other batches of goods, to gain the customer's understanding and support.
In addition, the enterprise will track the entire delivery process and maintain close contact with the logistics company to keep abreast of the transportation status of the goods. If any abnormal conditions occur during transportation, such as goods detention or damage, timely measures will be taken to handle them to ensure that the goods can be delivered to customers as soon as possible. For some urgent orders, the enterprise will give priority to production and delivery, mobilize various resources to ensure that the goods are shipped in the shortest possible time to meet the customer's urgent needs.
(4) Samples
To enable customers to fully understand the performance and quality of 35mm² stranded copper PVC
Insulated Cables before mass purchase, the enterprise provides sample services for customers to test and evaluate, helping them make more informed purchasing decisions.
Customers can apply for samples by phone, email, online consultation, etc., specifying the specifications, quantity, and purpose of the required samples. For 35mm² cables, customers may need to know indicators such as conductivity, insulation performance, flexibility, and mechanical strength, and the enterprise will provide corresponding samples according to the customer's needs.
After receiving the sample application, the enterprise will review it in a timely manner. If it meets the conditions for providing samples, it will arrange the preparation and delivery of samples within the specified time. The sample preparation process is the same as that of formal products to ensure that the samples can accurately reflect the actual quality and performance of the products. The length of the sample is usually determined according to customer needs, generally ranging from 1 to 5 meters. For 35mm² cables, this length is sufficient for customers to conduct various performance tests, such as cutting part of the conductor for purity and resistance tests, and testing the insulation layer for voltage resistance and temperature resistance.
The packaging of samples is similar to that of formal products, but the word "sample" will be marked on the packaging for customers to identify. At the same time, the samples will be accompanied by detailed product information, such as product manuals, test reports, and specification parameter tables, to help customers better understand the various performance indicators and usage methods of the products. The test reports include the purity test of the conductor, DC resistance test, voltage resistance test of the insulation layer, flame retardant performance test, etc., allowing customers to have a more intuitive understanding of the product quality.
Samples are usually sent by express delivery. The enterprise will choose reputable and fast courier companies to ensure that the samples can be delivered to customers as soon as possible. For some remote areas, it will communicate with customers in advance to explain the possible transportation time. In terms of sample fees, for some regular sample applications, the enterprise may provide them free of charge, but customers need to bear the transportation cost of the samples; for some samples with special specifications or customized ones, the enterprise may charge a certain sample fee, which will be reduced or exempted according to the situation when customers make mass purchases later.
After receiving the samples, if customers have any questions about the products or need further technical support, the enterprise's technical personnel will provide help and answers in a timely manner. Through sample services, customers can fully understand and evaluate the products before purchasing, thus increasing their confidence in the products.
(5) After-sales Service
The after-sales service system for 35mm² stranded copper
PVC Insulated Cables is well-developed, aiming to provide customers with comprehensive support and protection and solve various problems encountered by customers during use.
The enterprise promises that within the product quality guarantee period, if the product has quality problems caused by non-human factors, it will provide customers with free return and exchange services. The quality guarantee period is usually determined according to the service environment and service life of the product, generally ranging from 1 to 5 years. During the quality guarantee period, if a customer finds quality problems with the product, they can apply for after-sales service with the purchase certificate. The enterprise will arrange professional personnel to verify. If it is confirmed to be a quality problem after verification, the customer will be handled with return and exchange procedures in a timely manner, and the relevant transportation costs will be borne.
At the same time, the enterprise also provides professional technical support services. When customers encounter any technical problems during product installation, use, and maintenance, they can seek help from the enterprise's technical personnel by phone, email, online consultation, etc. Technical personnel will provide detailed solutions and guidance according to the customer's problems to ensure that customers can use the product correctly and give full play to the product's performance. For example, if customers have questions about the installation methods of 35mm² cables in complex environments, technical personnel can provide on-site guidance or detailed installation drawings.
In addition, the enterprise has established a sound customer feedback mechanism and attaches great importance to customers' opinions and suggestions. If customers have any dissatisfaction or suggestions on products or services, they can feedback to the enterprise in a timely manner. The enterprise will take every feedback information seriously, handle and improve it in a timely manner, and continuously improve product quality and service level.
For some large engineering projects, the enterprise can also provide on-site services, sending professional personnel to the site for guidance and assistance to ensure that the installation and use of cables meet the requirements. This includes checking the installation quality of cables, troubleshooting possible problems, and providing relevant technical training for the customer's staff.
In short, the enterprise's after-sales service team will provide customers with all-round support with a professional, efficient, and enthusiastic attitude, so that customers have no worries in the process of purchasing and using 35mm² stranded copper PVC insulated cables.