I. Product-Specific Details
1. Specification Parameters
The RVV 2 core
Flexible Electric Cable is engineered with precise technical specifications to meet the rigorous demands of industrial environments, ensuring reliable performance, safety, and durability across diverse applications. These parameters, aligned with international standards, define its capabilities in power transmission, machinery interconnection, and control systems.
Conductor Specifications
At the core of the RVV cable are two stranded
Pure Copper Conductors, available in cross-sectional areas of 1.5mm², 2.5mm², and 4mm². The stranded design enhances
Flexibility, while the high-purity copper ensures optimal conductivity.
The copper used is 99.9% pure, delivering an electrical conductivity of 580 S/m—minimizing energy loss during transmission. The conductors exhibit a tensile strength of 220 N/mm² and an elongation at break of 15%, ensuring resistance to stretching during installation while allowing flexibility for dynamic movements.
Insulation and Jacket Properties
Each
Copper Conductor is individually insulated with PVC, and the pair is encased in an outer
PVC Jacket, providing dual-layer protection.
PVC Insulation: Thickness ranges from 0.5mm (1.5mm²) to 0.7mm (4mm²), with a dielectric strength of ≥15 kV/mm. It operates within a temperature range of -20°C to +70°C, with short-term tolerance up to +90°C for 5 seconds. The insulation is resistant to oils, coolants, and mild chemicals, preventing electrical leakage and short circuits.
Outer PVC Jacket: Available in black or white, with a thickness of 0.8mm (1.5mm²) to 1.0mm (4mm²). The black jacket contains UV stabilizers for enhanced resistance to sunlight, making it suitable for semi-outdoor use, while the white jacket offers better visibility in indoor settings. The jacket provides abrasion resistance (≥500 cycles per ISO 6722) and impact resistance, with a minimum crush resistance of 10kN/m.
The overall diameter of the cable varies by size: 4.0mm (1.5mm²), 5.0mm (2.5mm²), and 6.0mm (4mm²), ensuring compatibility with standard conduits and cable trays.
Mechanical and Safety Ratings
Bending Radius: 6× outer diameter for fixed installations (e.g., 24mm for 4.0mm diameter) and 10× for dynamic applications (e.g., 40mm for 4.0mm diameter), allowing flexibility in routing around machinery.
2. Unique Applications
The RVV 2
Core Cable’s flexibility, conductivity, and durability make it indispensable across a range of industrial applications, adapting to diverse environments and power requirements.
Power Transmission for Portable Equipment
The 1.5mm² and 2.5mm² cables are widely used to power portable industrial tools such as electric drills, grinders, and sanders. Their flexibility allows easy handling by workers, while the PVC jacket resists damage from drops and abrasion. In automotive repair shops, these cables connect corded tools to power outlets, withstanding exposure to oils and metal shavings.
Machinery Interconnection
In manufacturing lines, the 2.5mm² and 4mm² cables serve as interconnection links between machinery components. For example, they connect conveyor belt motors to control panels in logistics warehouses, ensuring seamless power flow. In packaging facilities, they link filling machines to sensors, enabling synchronized operation. The cable’s flexibility accommodates minor movements of machinery during operation, preventing strain on connections.
Control Systems
The 1.5mm² cable is ideal for low-power control circuits, such as those in PLC (Programmable Logic Controller) systems. It connects limit switches, solenoids, and proximity sensors to control panels in assembly lines, ensuring accurate signal transmission. Its dual insulation prevents interference between circuits, critical for maintaining precision in automated processes.
Semi-Outdoor Industrial Settings
The black-jacketed 4mm² cable is used in semi-outdoor applications, such as powering outdoor pumps in wastewater treatment plants or connecting machinery in open-air warehouses. Its UV resistance prevents degradation from sunlight, while the jacket’s moisture resistance protects against rain and dew. In construction sites, it temporarily connects portable generators to tools, withstanding harsh weather conditions.
Specialized Environments
Food Processing: The white-jacketed 2.5mm² cable is preferred for its visibility and resistance to cleaning agents (e.g., sodium hypochlorite), used to power mixers and packaging machines in hygienic zones.
3. Material and Design Features
The RVV cable’s performance is a result of carefully selected materials and intentional design, balancing flexibility, protection, and conductivity for industrial use.
Copper is chosen for its high electrical conductivity, ensuring minimal energy loss—critical for long cable runs in factories. The stranded design, with multiple thin strands twisted helically, enhances flexibility compared to solid cores. This structure allows the cable to bend repeatedly without cracking, a key advantage in dynamic environments where machinery moves or cables are frequently repositioned. The 99.9% pure copper minimizes oxidation, ensuring consistent conductivity over time, even in humid conditions.
PVC Insulation
The individual PVC insulation on each conductor is formulated with plasticizers to enhance flexibility and heat stabilizers (calcium-zinc compounds) to resist thermal degradation. This insulation acts as a barrier against electrical leakage, with its high dielectric strength preventing short circuits when the cable comes into contact with metal surfaces or other conductors. It is also resistant to oils and greases, ensuring stability in automotive and manufacturing environments.
PVC Outer Jacket
The outer jacket is a heavy-duty PVC compound, with additives tailored to jacket color:
The jacket bonds tightly to the inner insulation, preventing moisture ingress and providing mechanical protection against abrasion, impact, and crushing—critical for cables routed through industrial workspaces with heavy foot or equipment traffic.
Structural Design
The cable’s compact, round profile allows easy installation in conduits and cable trays, while the two-core design simplifies wiring for single-phase power or control circuits. The
Stranded Conductors and flexible insulation/jacket work in tandem to ensure a minimum bending radius that supports tight routing around machinery, reducing the need for excessive slack and optimizing space in control panels.
4. Manufacturing Process
The production of RVV
2 Core Cables adheres to strict quality controls, following standards such as IEC 60227 and GB 5023.5. The process involves several precision stages to ensure consistency and reliability.
Conductor Formation
High-purity copper cathodes are melted and cast into 8mm diameter rods. These rods are drawn through diamond dies to form thin strands (0.25mm–0.32mm diameter), with the number of strands varying by cable size. The strands are then twisted together in a stranding machine at a controlled pitch (10–15× strand diameter) to enhance flexibility. This twisting process is computer-monitored to ensure uniform tension, preventing strand breakage.
Insulation Extrusion
Each stranded conductor is fed into an extrusion line, where molten PVC (heated to 180–200°C) is applied uniformly around it. The extrusion die is calibrated to achieve precise insulation thickness, with online laser gauges verifying dimensions. The
Insulated Conductors are cooled in a water bath to solidify the PVC, ensuring a smooth, consistent surface.
Pairing and Jacketing
The two insulated conductors are twisted together to form a pair, reducing electromagnetic interference. This pair is then fed into a second extrusion line, where the outer PVC jacket is applied. The jacket material is heated to 170–190°C and extruded over the paired conductors, with the die size determining the final cable diameter. The cable is cooled, and a printing machine applies markings (size, voltage rating, standard compliance) along its length for identification.
Quality Testing
Each batch undergoes rigorous testing:
Cables that pass all tests are spooled onto reels for distribution.
II. General Product Information
1. Packaging
The RVV 2 core cables are packaged to protect against damage during storage, transportation, and handling, while facilitating efficient use in industrial settings.
Reel Packaging
Cables are wound onto sturdy plastic or wooden reels, available in lengths of 100m, 200m, and 500m. Smaller reels (100m) for 1.5mm² and 2.5mm² cables weigh 5kg–10kg, suitable for manual handling. Larger reels (500m) for 4mm² cables weigh 25kg–30kg and feature a steel core for compatibility with mechanical unwinding equipment. Each reel has flanges (150mm–300mm diameter) to prevent the cable from slipping off during transport.
Protective Wrapping
Reels are wrapped in a thick polyethylene film to shield the cable from dust, moisture, and UV light. For outdoor storage, an additional layer of waterproof kraft paper is applied, secured with steel bands. Each reel is labeled with a barcode, product code, cable size, length, voltage rating, manufacturing date, and compliance certifications (e.g., CE, CCC).
Bulk Packaging
For large industrial orders, cables are supplied in 1000m coils on steel-reinforced wooden drums. These drums have a diameter of 600mm–1000mm and are fitted with lifting eyes for handling by cranes or forklifts. Bulk packaging reduces packaging waste and lowers transportation costs for high-volume buyers.
2. Transportation
The transportation of RVV cables is managed to ensure they reach industrial customers in optimal condition, with protocols for different modes of transport.
Road Transport
Cables are transported by trucks with enclosed trailers to protect against weather damage. Reels are secured using ratchet straps and wooden blocks to prevent movement during transit. For large drums, flatbed trucks with side rails are used, with drums anchored using chains. Drivers receive training to handle heavy loads, with weight distribution checked to avoid overloading axles.
Sea and Air Transport
International shipments use 20ft or 40ft shipping containers. Reels are stacked vertically to maximize space, with dunnage (wooden blocks) between them to prevent friction. Desiccants (1kg per 10m³) are added to absorb moisture, and temperature loggers monitor conditions (maintained between -5°C and +35°C). Air freight is used for urgent orders, with small reels (100m–200m) packed into crates weighing ≤30kg to meet airline restrictions.
Handling Guidelines
Upon delivery, customers are advised to inspect reels for damage (e.g., cracked flanges, torn wrapping). Cables should be stored in a dry, covered area, with reels elevated on pallets to prevent contact with moisture. When unwinding, reels should be mounted on a stand to avoid twisting the cable, which could damage the jacket or conductors. Handling equipment (e.g., forklifts) must use appropriate attachments to avoid reel damage.
3. Shipping and Delivery
The company offers flexible shipping options for industrial customers, ensuring timely delivery to meet production schedules.
Order Processing
Wholesale orders are processed within 24 hours of receipt, with a dedicated account manager assigned to coordinate production and shipping. For custom orders (e.g., specific lengths, jacket colors), lead times are 5–7 business days. Customers receive a confirmation email with order details, estimated delivery date, and tracking number.
Delivery Timeframes
Expedited shipping is available for a 30% premium, with domestic delivery within 24–48 hours and international air freight within 48–72 hours.
Shipping Costs
Costs are calculated based on reel weight, destination, and shipping method. Domestic trucking for 100m reels starts at \(40, while 1000m drums cost \)150–\(300 depending on distance. International sea freight averages \)800–\(1500 per container, with air freight rates at \)3–$5 per kg. Customers with annual orders exceeding 10,000m qualify for free shipping.
4. Sample Provision
The company provides free samples to industrial customers, allowing them to evaluate quality before placing large orders.
Sample Request Process
Customers can request samples via email, phone, or the company website, specifying cable size (1.5mm²–4mm²), length (up to 5m), and jacket color. Samples are processed within 24 hours, with a nominal shipping fee (\(20–\)50) charged, which is refundable on the first order.
Sample Contents
Each sample package includes:
Samples are shipped via express courier (DHL, FedEx) with tracking information provided.
5. After-Sales Service
The company offers comprehensive after-sales support to industrial customers, ensuring satisfaction and minimizing downtime.
Technical Support
A team of industrial electrical engineers is available 24/7 to provide guidance on installation, termination, and troubleshooting. They assist with selecting the correct cable size for specific applications, ensuring compliance with industrial standards (e.g., IEC 60364 for electrical installations). On-site support can be arranged for large projects, with engineers training staff on proper handling and testing.
Warranty Coverage
The RVV cable is backed by a 10-year warranty against manufacturing defects, including:
The warranty does not cover damage from improper installation, excessive bending, or exposure to chemicals beyond the cable’s resistance limits.
Claims Process
To file a claim, customers provide photos of the defect, proof of purchase, and installation details. Claims are reviewed within 48 hours, with a replacement or refund issued if approved. For urgent cases (e.g., production line shutdowns), replacement cables are shipped within 24 hours at no additional cost.
Feedback and Continuous Improvement
The company actively seeks customer feedback through surveys and account manager check-ins. Feedback is used to refine manufacturing processes, with recent improvements including enhanced UV resistance in black jackets and better flexibility in 4mm² cables.
Conclusion
The RVV 2 core flexible electric cable is a high-performance solution for industrial applications, combining pure copper conductivity, durable PVC insulation/jacketing, and flexibility to adapt to dynamic environments. Its range of sizes, compliance with international standards, and robust packaging make it a reliable choice for power transmission, machinery interconnection, and control systems in factories, warehouses, and manufacturing facilities. Supported by efficient shipping, sample provision, and comprehensive after-sales service, the cable delivers long-term value, ensuring industrial operations run smoothly and safely. Whether powering portable tools or connecting automated machinery, the RVV cable stands as an indispensable component in industrial electrical infrastructure.
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