I. Product-Specific Information
(1) Specification Parameters
BV/BVR single-core PVC
Insulated Cables have rigorous and detailed settings in terms of specification parameters, which collectively ensure their stable performance and safe operation in building wiring.
In terms of voltage level, both types of cables have a rated voltage of 450/750V, where 450V represents the voltage between the conductor and the ground, and 500V represents the voltage between conductors. This voltage level makes them suitable for AC 50Hz or 60Hz low-voltage power distribution systems, capable of meeting the power needs of different electrical equipment in various buildings, whether residential buildings, commercial buildings, or auxiliary facilities of industrial plants, ensuring stable power supply.
In terms of cross-sectional area, a variety of specifications ranging from 0.75mm² to 25mm² are available to adapt to different power requirements. The 0.75mm² cable has a relatively small conductor diameter, approximately 0.97mm; while the 25mm² cable has a larger conductor diameter, approximately 5.6mm. Cables with different cross-sectional areas have significant differences in current-carrying capacity. At an ambient temperature of 30°C, the 0.75mm² BV/
BVR Cable can carry a continuous current of about 10A; the 1.5mm² cable has a current-carrying capacity of approximately 16A; the 2.5mm² cable can carry around 24A; the current-carrying capacity of cables from 4mm² to 10mm² ranges from 32A to 63A; the 16mm² cable can carry 80A; and the 25mm² cable can reach a current-carrying capacity of 100A. When the ambient temperature rises, the current-carrying capacity will decrease accordingly. For example, at 40°C, the current-carrying capacity of each specification cable will decrease by approximately 15% to ensure that the cable will not be damaged due to overheating.
BV Cables use a single solid
Pure Copper Conductor with a purity of over 99.95%. After annealing treatment, they have excellent conductivity with a conductivity of ≥58MS/m. At 20°C, their DC resistance does not exceed 19.5Ω/km for 0.75mm² and 0.727Ω/km for 25mm². BVR cables are multi-strand stranded pure
Copper Conductors, also with high purity, and their conductivity is equivalent to that of BV cables. The DC resistance also meets the corresponding standards, ensuring efficient current transmission.
In terms of insulation layer parameters, the insulation layers of both cables are made of high-quality PVC materials, with thickness increasing from 0.6mm for 0.75mm² to 1.6mm for 25mm² as the cross-sectional area increases. The insulation resistance is ≥100MΩ, which can effectively isolate current and prevent short-circuit accidents. At the same time, the insulation layer can withstand a 2kV power frequency withstand voltage test without breakdown, flashover, or other phenomena during the test, further verifying its good insulation performance.
In addition, BVR cables have better
Flexibility, with a minimum bending radius of 6 times the outer diameter of the cable, while BV cables, due to their single solid structure, have a relatively larger minimum bending radius of 10 times the outer diameter of the cable. This parameter difference determines their applicability in different wiring scenarios.
(2) Characteristic Uses
BV/BVR single-core PVC
Insulated Cables, relying on their respective characteristics, have extensive and targeted characteristic uses in the field of building wiring.
BV cables, due to their single solid pure copper conductor, have high mechanical strength and are suitable for fixed wiring scenarios. In residential buildings, a large number of BV cables are used for wall embedded wiring, such as lighting circuits and ordinary socket power supply lines in living rooms and bedrooms. Burying the cables in the wire grooves or pipes inside the walls can maintain stability for a long time and is not easy to be damaged by external forces. In public areas of commercial buildings, such as the wiring of lighting systems in corridors and halls, BV cables are often chosen. Their good fixity can ensure long-term safe operation. In auxiliary facilities of industrial plants, such as
Electrical Wiring in offices and rest rooms, the stability and durability of BV cables can also meet the needs.
BVR cables, as multi-strand stranded pure
Copper Conductors, have better flexibility and are suitable for scenarios that require frequent bending or have narrow wiring spaces. When wiring in the ceiling of a building, due to limited space and the need to bypass various pipes and structures, the good flexibility of BVR cables allows them to easily shuttle through and complete the wiring. Internal connection of equipment is also an important application scenario for BVR cables. For example, the line connection inside distribution boxes and control cabinets requires cables to bend multiple times in a narrow space, and BVR cables can well adapt to this environment. In places such as stage construction and temporary exhibition halls that require temporary wiring and may change frequently, the flexibility and ease of operation of BVR cables make them the first choice.
Cables of different cross-sectional areas also have different focuses in use. The 0.75mm² cable is suitable for small lighting fixtures, such as wall lamps in corridors and mirror front lamps in bathrooms; the 1.5mm² cable can be used for general lighting circuits, such as the main lighting lines in rooms; the 2.5mm² cable meets the power supply of ordinary sockets and can be connected to commonly used electrical appliances such as TVs, computers, and microwave ovens; the 4mm² to 10mm² cables can carry high-power electrical appliances such as air conditioners, electric water heaters, and ovens to ensure their normal operation; the 16mm² and 25mm² cables are suitable for building main lines or power distribution systems, responsible for distributing power from the main distribution box to the distribution boxes on each floor or in each area, providing strong power support for the electrical system of the entire building.
(3) Material and Style
In terms of material selection and style design, BV/BVR single-core
PVC Insulated Cables fully consider the needs of building wiring, taking into account performance, safety, and practicality.
In terms of materials, the conductors of both cables are made of high-purity pure copper with a purity of over 99.95%. High-purity copper has excellent conductivity, which can reduce energy loss during current transmission and ensure efficient power transmission. At the same time, pure copper has good ductility and toughness. After annealing treatment, the single solid conductor of BV cables has higher mechanical strength, and the multi-strand
Stranded Conductor of BVR cables has better flexibility, which can meet the needs of different scenarios.
The insulation layer is made of high-quality PVC material, which has good insulation performance and can effectively isolate current to prevent short-circuit accidents. PVC material has good temperature resistance and can work stably in the temperature range of -15°C to 70°C, adapting to changes in various environmental temperatures in the building. In addition, PVC material also has certain wear resistance and chemical corrosion resistance, which can protect the internal conductor from external factors. More importantly, this PVC material complies with UL94 V-0 flame retardant standards. When encountering an open flame, it can inhibit combustion and self-extinguish within 30 seconds after the open flame is removed, greatly reducing the risk of fire spread and improving the safety of the cable. At the same time, because it complies with RoHS standards, the
Insulation Material does not contain harmful substances such as lead, cadmium, and mercury, which is more environmentally friendly and will not cause harm to human health and the environment.
In terms of style design, BV cables have a single solid structure, with a cylindrical appearance and simple lines. Due to their strong rigidity, they are easy to fix and straighten during wiring, suitable for long-distance straight-line wiring. BVR cables have a multi-strand stranded structure, also cylindrical, but feel softer, and are easier to bend and fold during wiring, able to adapt to complex wiring paths.
The surfaces of both cables are printed with clear marks, including specifications (such as 0.75mm², 2.5mm², etc.), voltage level (450/750V), RoHS certification mark, manufacturer, production date, and other information. These marks facilitate construction personnel to quickly identify the parameters and uses of the cables during installation and also provide convenience for later quality traceability. The cables come in various colors, such as red, blue, yellow, and green. Different colors are used to distinguish phase lines, neutral lines, and ground lines, in line with electrical specifications, reducing the possibility of wiring errors and improving construction efficiency and electrical safety.
(4) Production Process
The production process of BV/BVR single-core PVC insulated cables is rigorous and meticulous, with each link strictly controlled to ensure the quality and performance of the products.
For BV cables, the first step is the manufacturing of the conductor. High-purity copper materials are selected and made into copper rods through processes such as smelting and ingot casting. Then, the copper rods are drawn into single solid
Copper Wires through wire drawing equipment. During the wire drawing process, the drawing speed and mold precision must be accurately controlled to ensure that the diameter of the copper wires meets the requirements. After that, the copper wires are annealed, heated to a specific temperature (about 400-600°C), and then slowly cooled to eliminate internal stress, improve their ductility and flexibility, and enhance conductivity.
The conductor manufacturing process of BVR cables is different from that of BV cables. In the wire drawing stage, the copper rods are drawn into multiple strands of fine copper wires, and then the multiple strands of fine copper wires are stranded together according to a certain stranding process. During the stranding process, it is necessary to ensure that the tension of each strand of copper wire is uniform and the stranding pitch is reasonable to ensure the flexibility and conductivity of the conductor. After stranding, annealing treatment is also carried out to further improve the performance of the conductor.
Next is the extrusion process of the insulation layer, which is basically the same for BV and BVR cables. The processed conductor is fed into an extruder, and a layer of
PVC Insulation Material is wrapped around the conductor. During the extrusion process, the extrusion temperature (usually 160-180°C), speed, and pressure must be strictly controlled to ensure that the insulation layer has a uniform thickness, is closely combined with the conductor, and is free of bubbles, impurities, and other defects. At the same time, corresponding color masterbatches can be added to the PVC material as needed to make the cable present specified colors, such as red and blue, to distinguish different uses.
After extrusion, the cable enters a cooling water tank for cooling and shaping, so that the
PVC Insulation layer can be quickly solidified and maintain a stable shape and performance. During the cooling process, the water temperature must be controlled to avoid cracks in the insulation layer caused by sudden temperature changes. The cooled cable is pulled to the take-up machine through traction equipment, and the take-up machine neatly winds the cable on the reel. During the winding process, the tension must be controlled to avoid excessive stretching or loosening of the cable.
During the production process, a number of quality inspections are required. In the conductor manufacturing stage, parameters such as the diameter and resistance of the copper wire are tested; after the insulation layer is extruded, the thickness and voltage resistance of the insulation layer are tested; the finished cable also undergoes overall appearance inspection, length measurement, bending performance test, etc. For meeting the requirements of RoHS standards, strict testing is carried out in raw material procurement and production processes to ensure that the content of harmful substances in insulation materials and conductors does not exceed the specified standards.
Finally, qualified products are packaged and prepared for delivery. The entire production process follows a strict quality control system to ensure that each batch of BV/BVR cables meets relevant standards and requirements, providing reliable products for building wiring.
II. General Product Information
(1) Packaging
The packaging design of BV/BVR single-core PVC insulated cables fully considers the product's protection, storage, and transportation needs, ensuring that the cables are in good condition when they reach users.
For coiled cables, hard paper tubes or plastic reels are usually used as inner cores, and the cables are neatly wound on the reels. When winding, the winding tension must be controlled to avoid excessive stretching or loosening of the cable, preventing twisting and knotting. Both ends of the reel are equipped with circular baffles, the diameter of which is larger than that of the cable coil, which can effectively prevent the cable from slipping off the reel. Then, the outside of the cable coil is wrapped with a moisture-proof and wear-resistant plastic film, which should be closely attached to the cable and the reel to play the role of moisture-proof, dust-proof, and wear-resistant. For long-length cable coils (such as 100 meters, 200 meters, 500 meters), wooden boxes are used for reinforced packaging. The size of the wooden box is customized according to the size of the cable coil, and buffer materials (such as foam, paper scraps, etc.) are filled inside to further protect the cable from damage during transportation.
For small-length cables (such as 1 meter, 5 meters, 10 meters), they are usually packaged in sealed plastic bags or cartons. The plastic bags or cartons are clearly printed with product specifications, length, model, manufacturer, RoHS certification mark, and other information, which is convenient for users to identify and purchase. This small packaging method not only facilitates users to carry and use but also avoids the cable from being affected by the external environment during storage.
The identification information on the packaging is complete and clear. In addition to the above-mentioned content, it also includes product name (BV/BVR single-core PVC insulated cable), rated voltage (450/750V), implementation standards (such as GB 5023, IEC 60227, etc.), production date, shelf life, etc. These marks comply with relevant packaging specifications and standards, providing users with comprehensive product information and facilitating users to understand and use the products.
(2) Transportation
The transportation process of BV/BVR single-core PVC insulated cables needs to strictly abide by relevant regulations to ensure that the products are delivered to the destination safely and timely.
In terms of transportation mode selection, according to factors such as transportation distance, quantity, and time requirements, road transportation, railway transportation, water transportation, or air transportation can be adopted. For short-distance transportation or small batches of goods, road transportation has the advantages of high flexibility and strong timeliness, and trucks can be chosen for transportation; for long-distance transportation or large quantities of goods, railway transportation and water transportation are more economical, suitable for long-distance and large-scale cargo transportation; for urgent orders or international transportation, air transportation is a better choice, which can quickly deliver products but has a relatively high cost.
During transportation, it is necessary to avoid severe collision, extrusion, and vibration of the cable. The interior of the transport vehicle or transport tool should be kept clean and dry, without corrosive substances and sharp objects, to prevent damage to the cable packaging and sheath. Cable coils should be placed neatly and fixed firmly with ropes or other fixing devices to prevent rolling, collision, or dumping during transportation. For small packaged cables, avoid stacking too high to prevent crushing.
At the same time, attention should be paid to the environmental conditions during transportation. Cables should be avoided from being transported in extreme temperature environments, such as high-temperature exposure and low-temperature freezing, so as not to affect the performance of the cables. In high-temperature environments, the PVC insulation layer may soften, leading to cable adhesion; in low-temperature environments, the PVC material may become brittle, affecting the flexibility of the cable. When transporting in rainy or humid environments, moisture-proof measures should be taken to ensure that the packaging is intact and prevent rainwater from seeping into the cable.
During transportation, it is necessary to track and manage the goods and keep abreast of the transportation status of the goods. The shipper should sign a detailed transportation contract with the carrier, clarifying the rights and obligations of both parties, and formulate corresponding compensation clauses for possible damage or loss of goods during transportation. After the goods arrive at the destination, the receiver should promptly inspect the goods to confirm whether the packaging is intact and whether the cable is damaged. If there is any problem, they should promptly communicate with the shipper and the carrier to solve it.
(3) Shipping
The shipping process of BV/BVR single-core PVC insulated cables is standardized and orderly, aiming to provide customers with efficient and convenient services.
After receiving the customer's order, the sales department will promptly review the order information, including product specifications, quantity, delivery address, delivery time, etc., to ensure that the order information is accurate. After passing the review, the sales department will transmit the order information to the warehouse department, and the warehouse staff will prepare the goods according to the order requirements.
During the goods preparation process, the warehouse department will conduct strict outgoing inspection on the products, checking whether the packaging is intact, the marks are clear, and the quantity is accurate. Only products that pass the inspection can be arranged for delivery. When leaving the warehouse, the warehouse staff will fill out a delivery note, which records in detail the product name, specifications, quantity, delivery date, and other information.
For goods that need to be transported, the warehouse department will choose an appropriate packaging method according to the transportation method and the quantity of goods, and contact the cooperative transportation company to arrange transportation. Information about the transportation company (such as name, contact information, transportation vehicle information, etc.) will be promptly fed back to the customer to facilitate the customer to track the transportation status of the goods.
After the shipment is completed, the sales department will promptly notify the customer of the shipment information (such as shipment date, transportation company, waybill number, etc.) and send relevant documents (such as invoices, delivery notes, transportation documents, etc.) to the customer. At the same time, the sales department will record and file the shipping situation for subsequent query and statistics.
If customers have special requirements during the shipping process (such as expedited shipping, designated transportation companies, etc.), the sales department will try its best to coordinate to meet the customers' needs. For problems arising during the shipping process such as delayed delivery or damaged goods, the sales department will communicate promptly with the logistics company to assist customers in resolving issues and ensure their rights are protected.
(4) Samples
To help customers better understand the performance and quality of BV/BVR single-core PVC insulated cables, the company offers sample services.
Customers can request samples through the official website, customer service hotline, or email. When applying, customers need to provide detailed contact information (name, company name, address, phone number, email) and specify the required cable specifications and quantities. The sales team will review the application and arrange sample delivery within 1-3 working days upon approval.
Samples are identical to formal products, accurately reflecting their performance and quality. Typically 1-2 meters in length, samples are packaged in sealed plastic bags with attached specifications, including technical parameters, performance features, RoHS compliance certificates, and usage guidelines.
Sample delivery costs are generally covered by the company, with no additional charges for customers. For international clients, sample delivery may take longer, and the sales team will provide real-time updates on shipment status.
Upon receiving samples, customers can conduct comprehensive tests—including appearance inspection, conductor resistance measurement, insulation performance evaluation, and flexibility testing—to verify suitability. Satisfied customers can proceed to discuss cooperation, while any questions or suggestions will be addressed promptly by technical experts.
(5) After-Sales Service
The after-sales service system for BV/BVR cables is comprehensive, providing full-cycle support to customers.
Warranty Coverage
The company offers a 1-2 year warranty (starting from the production date) for manufacturing defects, such as conductor breakage, insulation cracking, or sheath damage caused by non-human factors. During this period, free repairs or replacements will be provided.
Technical Support
Customers encountering installation difficulties or performance issues can contact the after-sales team via hotline, email, or online chat. Technical specialists will respond within 24 hours with professional solutions, including wiring diagrams and compatibility guidance.
On-Site Services
Bulk purchasers can request on-site assistance, such as installation supervision and quality inspections. Technicians will assess on-site conditions, offer tailored usage recommendations, and ensure optimal cable performance.
Feedback Mechanism
Regular customer follow up its are conducted to gather usage feedback, which is used to improve product design and service quality. For unsatisfactory products, return procedures will be processed promptly under eligible conditions (e.g., unopened packaging), safeguarding customer rights.
Compliance Assistance
The after-sales team provides documentation support, including RoHS test reports, certification documents, and material safety data sheets (MSDS), to assist customers in meeting regulatory requirements for building projects.
In summary, BV/BVR single-core PVC insulated cables combine rigorous manufacturing standards, eco-friendly materials, and versatile performance to meet diverse building wiring needs. Backed by reliable packaging, efficient logistics, and responsive after-sales service, they remain a trusted choice for safe, durable, and environmentally responsible electrical installations.
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