RVVP Shielded Cable 2/3/4/5/6/7/8/10 Cores Multi Core Flexible Copper PVC Insulated Control Cable​ RVVP shielded control cables, featuring 2 to 10 multi-core configurations with flexible copper conductors and PVC insulation, are engineered for reliable signal transmission in industrial control systems, automation setups, and building management networks. These cables combine robust shielding with durable construction to excel in environments where electromagnetic interference (EMI) and mechanical flexibility are critical.​ The tinned copper braid shielding effectively blocks EMI and radio frequency interference (RFI), ensuring signal integrity in noisy industrial settings with motors, transformers, or power lines. Flexible stranded copper conductors enhance maneuverability, allowing easy routing through tight spaces, around machinery, or in dynamic applications like robotic arms. PVC insulation and outer sheath provide resistance to oils, moisture, and abrasion, making them suitable for both indoor control panels and protected outdoor installations.​ Available in 2 to 10 cores, these cables accommodate diverse control needs—from simple on/off signals to complex multi-sensor data transmission. Their balance of flexibility, shielding, and cost-effectiveness makes them a preferred choice for engineers and contractors seeking consistent performance in automation, instrumentation, and building control systems.

The 21-core stranded polyvinyl chloride (PVC) control cable 300/500V copper core is a multi-core cable specially designed for complex electrical control systems, widely used in industrial automation, building intelligent control, mechanical equipment linkage and other scenarios. With high-purity copper as the conductor, PVC as the insulation and sheath material, combined with a multi-core stranded structure, it has both signal transmission stability, anti-interference and environmental adaptability, and is a key component for realizing accurate control command transmission.​ I. Core Specifications and Performance Parameters​ Conductor and Structural Characteristics​ Each conductor is made of high-purity electrolytic copper (purity ≥99.95%), with a single core cross-sectional area of 0.5mm² or 0.75mm². 21 conductors are precisely stranded to form a cable core, and the stranding pitch is controlled at 15-20 times the diameter of a single core, which not only ensures flexibility but also reduces mutual interference during signal transmission. At 20℃, the DC resistance of a single core conductor is ≤36.0Ω/km (0.5mm²) or ≤24.5Ω/km (0.75mm²), with excellent conductivity, ensuring efficient transmission of weak control signals.​ Insulation and Sheath Performance​ Each conductor is independently covered with a PVC insulation layer with a thickness of ≥0.2mm, and the insulation resistance is ≥100MΩ·km (20℃). It can withstand 500V AC voltage for 1 minute without breakdown, effectively isolating signal crosstalk between cores. The overall sheath is also made of flame-retardant PVC material with a thickness of ≥0.8mm, a temperature resistance range of -15℃ to 70℃, an oxygen index of ≥30, and passes the vertical burning test (self-extinguishing time ≤30 seconds), with good fire resistance. The surface of the sheath is smooth, and the outer diameter is about 8-12mm according to the number of cores and wire diameter. The bending radius is ≥6 times the outer diameter, which is convenient for flexible laying in equipment or pipelines.​ Safety and Environmental Adaptability​ The rated voltage is 300/500V, which meets the requirements of GB/T 9330 control cable standard and CCC certification. It has oil resistance and wear resistance. After being immersed in industrial oil environment for 24 hours, the insulation resistance retention rate is ≥80%. It has excellent anti-mechanical vibration performance. After vibration test at 10-500Hz frequency, the conductor connection is not loose, and the signal transmission is stable, which is suitable for vibration scenarios such as machine tools and production lines.​ II. Characteristic Applications and Scene Adaptation​ Industrial Automation Control​ In production lines such as automobile manufacturing and food processing, as the connection line between PLC (programmable logic controller) and sensors and actuators, the 21-core design can transmit multiple control signals at the same time (such as motor start-stop, valve switch, temperature monitoring, etc.), reducing wiring complexity. For example, in the automatic assembly line, the cable is used to realize the synchronous transmission of robotic arm action instructions, conveyor belt speed regulation and workpiece detection signals, with a response delay of ≤10ms, ensuring accurate linkage of the production process.​ Building Intelligent Systems​ It is suitable for building automation systems, connecting the central control room with air conditioning units, lighting modules, security equipment, etc. The 21-core cable can separately undertake the transmission tasks of temperature regulation signals, light switch instructions, infrared alarm signals, etc., supporting centralized control of multiple devices. In large shopping malls, it can simultaneously realize independent control of air conditioning temperature in different areas, linkage of emergency lighting and feedback of fire alarm signals, improving building management efficiency.​ Mechanical Equipment Linkage​ As the internal control line of CNC machine tools, packaging machinery and other equipment, it is used to connect the operation panel with servo systems, encoders and other components. Its multi-core structure can integrate signals such as spindle speed regulation, tool feed control and position feedback. The stranded design reduces electromagnetic interference during equipment operation, ensuring processing accuracy. In injection molding machines, it can stably transmit key signals such as barrel temperature control and mold clamping force adjustment, ensuring product molding quality.​ III. Material Technology and Advantages​ Material Advantages: High-purity copper conductors reduce signal attenuation, ensuring signal integrity for long-distance transmission (≤100 meters); PVC insulation and sheath do not contain halogen, and the smoke toxicity is low during combustion, meeting environmental protection requirements, with excellent anti-aging performance and a service life of ≥10 years.​ Process Characteristics: The conductor is annealed to improve flexibility, the insulation layer is uniformly coated by extrusion molding process, the stranding process ensures the core wires are arranged neatly through precision equipment, and antioxidants are added during sheath extrusion to enhance weather resistance. The surface of each meter of cable is printed with clear marks (specifications, meters, certification information), which is convenient for construction cutting.​ Practical Value: The multi-core integrated design reduces the number of cables, lowers wiring costs and difficulty in troubleshooting; it has both signal and weak power transmission capabilities (can carry ≤1A current), adapts to various control scenarios, and is an efficient and reliable control transmission solution in industrial and construction fields.

The 10 Core 1.5mm² Flexible Control Cable 300/500V is a signal transmission and control cable specifically designed for industrial automation systems and mechanical equipment. Leveraging its multi-core structure, excellent flexibility, weather resistance, and compatibility with a rated voltage of 300/500V, it serves as a key component connecting sensors, actuators, controllers, and mechanical equipment. Its core value lies in meeting the requirements of high-frequency bending, complex wiring, and stable signal transmission in industrial scenarios. It is widely used in CNC machine tools, robotic production lines, intelligent warehousing equipment, textile machinery, printing machinery, and other fields, providing reliable "neural conduction" support for the precise operation and efficient collaboration of industrial automation equipment. It is a mainstream cable option in the current industrial control field that combines practicality and durability.​ In terms of specifications and parameters, the cable's design accurately matches the technical needs of industrial control scenarios: the 10-core multi-core structure adopts a four-layer composite design of "conductor + insulation layer + shielding layer + sheath". Each conductor has a cross-sectional area of 1.5mm², and the long-term safe current-carrying capacity of a single core is approximately 8-12A (when laid in air at an ambient temperature of 30℃). When 10 cores transmit in parallel, they can simultaneously carry multiple sets of control signals and low-voltage power, adapting to the signal transmission of sensors (such as photoelectric sensors and proximity switches) in industrial equipment (current usually ≤5A), the transmission of control commands for actuators (such as small relays and solenoid valves), and the power supply for low-voltage components inside the equipment (such as indicator lights and small motors). Its rated voltage is 300/500V (complying with GB/T 5023 or IEC 60227 standards), which not only meets the low-voltage requirements of industrial control circuits (most control signal voltages are 24V DC or 220V AC) but also resists transient voltage fluctuations in the industrial power grid, avoiding signal interference or cable damage. In addition, the DC resistance of the cable conductor is strictly controlled at ≤12.1Ω/km (at 20℃, single-core copper conductor), which is much lower than the industry average, effectively reducing signal attenuation during transmission and ensuring the accurate delivery of control commands and data signals; at the same time, the insulation resistance is ≥100MΩ·km (at 20℃), and the voltage resistance performance reaches 1500V AC/1min without breakdown, further ensuring electrical safety in industrial environments.​ In terms of application scenarios, the "flexible" characteristics and multi-core structure of the cable give it strong scenario adaptability: in the CNC machine tool field, it can be used for the control signal transmission of spindle motors and feed axis motors, as well as the sensor signal connection of the turret tool change mechanism. CNC machine tools need to perform frequent axis movements during operation, and the cable must bend at high frequencies with the mechanical arm or slide (the number of bends can reach more than 1 million times, and the bending radius is 6-8 times the cable outer diameter). The flexible structure of this cable can avoid conductor breakage or insulation layer cracking caused by bending fatigue; in the industrial robot field, it is suitable for wiring at the robot joints. Robot joints rotate 360° and swing at multiple angles during operation, so the cable must have excellent torsion resistance (torsion angle ±180°/m). Its multi-core stranding process and elastic sheath material can reduce stress concentration during torsion, ensuring uninterrupted signal transmission; in the intelligent warehousing equipment field (such as stackers and AGV unmanned carts), it can be used for the control signal and positioning signal transmission of the equipment's walking mechanism. The wiring space in the warehousing environment is narrow, and the cable must be frequently dragged with the equipment movement. The lightweight design of this cable (weight per kilometer is about 18-22kg) and wear-resistant sheath (wear resistance complies with IEC 60811-2-1 standards) can reduce drag resistance, reduce sheath wear, and extend service life; in the continuous production machinery field such as textile and printing machinery, it can be used for signal transmission such as tension control and speed regulation of the equipment. Such machinery usually operates continuously for 24 hours, and the cable must withstand an ambient temperature of 80-100℃ (short-term overload temperature can reach 120℃). Its high-temperature resistant insulation material and sheath can ensure long-term stable operation, avoiding signal interruption caused by high-temperature aging.​ Material characteristics are the core support for the cable to adapt to industrial scenarios: the conductor is made of high-purity oxygen-free copper (purity ≥99.99%), using a multi-strand fine copper wire stranding process (each copper wire has a diameter of about 0.15mm, and a single core is composed of 70-80 strands of fine copper wire). Compared with single-strand hard conductors, the multi-strand stranding structure greatly improves the flexibility and fatigue resistance of the cable, which can withstand high-frequency bending and torsion without breaking; at the same time, oxygen-free copper has excellent electrical conductivity (conductivity ≥101%IACS), which can reduce loss and interference during signal transmission. The insulation layer wrapped around each conductor is made of temperature-resistant polyvinyl chloride (PVC) or cross-linked polyethylene (XLPE) material, with a temperature resistance grade of 80℃ or 105℃. The insulation thickness is uniformly controlled at 0.6-0.8mm, which not only ensures insulation performance but also avoids reducing cable flexibility due to excessive thickness. Some high-end models are also equipped with tinned copper wire braided shielding layers (shielding density ≥85%), which can effectively resist electromagnetic interference in industrial environments (such as electromagnetic radiation generated by frequency converters and high-power motors), ensure the signal-to-noise ratio of control signals, and avoid equipment misoperation caused by signal interference. For example, in a robotic production line, multiple devices operate simultaneously, creating a complex electromagnetic environment. The shielding layer can attenuate interference signals by ≥40dB, ensuring accurate signal transmission between sensors and controllers. The outer sheath is made of flexible polyvinyl chloride (PVC) or thermoplastic elastomer (TPE) material. The TPE material version has better flexibility (Shore hardness 60-70A) and is oil-resistant and chemical corrosion-resistant (can withstand the erosion of engine oil, cutting fluid, and weak acid-base solutions), suitable for scenarios with more oil pollution such as machine tool cutting and automobile manufacturing; the PVC material version has better cost-effectiveness, suitable for dry and clean automated workshop environments.​ In addition, the cable also has a number of industrial-grade value-added characteristics: first, strong weather resistance, which can work stably in an ambient temperature range of -20℃ to 80℃ (the TPE sheath version can be extended to -40℃ to 105℃), adapting to temperature and humidity changes in industrial plants in different regions; second, compliant flame retardancy, the insulation layer and sheath are made of flame-retardant materials, meeting the flame retardant grade (ZC grade) in GB/T 18380.1-2008, which can self-extinguish quickly when exposed to fire without producing toxic and harmful gases, providing a guarantee for the fire safety of industrial plants; third, convenient wiring, the cable outer diameter is about 8-10mm (slightly different depending on the sheath material and the presence of a shielding layer), which can be easily threaded into the wire pipes or wire troughs inside the equipment, adapting to the compact internal structure of industrial equipment; fourth, clear identification, the cable surface is printed with continuous product information (model, number of cores, cross-sectional area, rated voltage, execution standard, production batch number), using wear-resistant ink, which remains clearly visible after oil pollution and friction in industrial environments, facilitating construction personnel to check and maintain.​ Overall, the 10 Core 1.5mm² Flexible Control Cable 300/500V solves the core pain points of "unstable signal transmission, easy damage due to high-frequency bending, and difficulty adapting to complex environments" in the industrial automation and machinery field through precise specification design, material selection suitable for multiple scenarios, and industrial-grade durability. Whether it is the precise control of high-precision CNC machine tools or the flexible operation of high-flexibility industrial robots, this cable can serve as a reliable control signal carrier, helping industrial equipment achieve efficient, stable, and safe operation, and providing a basic guarantee for the intelligent manufacturing upgrade in the Industry 4.0 era.