11kv 70mm² Al/Sc/XLPE/Sc/Cut/PVC 3+1 Aerial Bundled Conductor Cable Abstract​ 1. Product Overview​ The 11kv 70mm² Al/Sc/XLPE/Sc/Cut/PVC 3+1 Aerial Bundled Conductor Cable is a high-performance cable designed for overhead power distribution. The "3+1" configuration indicates three phase conductors and one neutral conductor, each with a cross-sectional area of 70mm². It adheres to strict industry standards, ensuring reliable power transmission in various environments. This cable integrates advanced materials and structural design to meet the demands of medium-voltage power distribution systems.​ 2. Structural Composition​ 2.1 Conductors​ The conductors are made of high-purity aluminum (Al), which offers excellent electrical conductivity and lightweight properties. The 70mm² cross-sectional area ensures a high current-carrying capacity, making it suitable for medium-voltage applications. The aluminum conductors are stranded to enhance flexibility, facilitating easy installation and reducing the risk of breakage under mechanical stress.​ 2.2 Insulation and Layers​ Semiconductor Layers (Sc): There are inner and outer semiconductor layers. The inner layer, in contact with the conductor, ensures a smooth transition of electrical stress, preventing partial discharges. The outer semiconductor layer, covering the insulation, balances the electrical field and bonds with the metallic screen.​ XLPE Insulation: Cross-linked polyethylene (XLPE) is used as the main insulation material. It provides superior dielectric strength, high temperature resistance (up to 90°C continuously), and excellent resistance to moisture and chemicals, ensuring reliable insulation performance.​ Metallic Screen (Cut): A metallic screen, typically copper tape or braid, surrounds the outer semiconductor layer. It acts as an electromagnetic shield to reduce interference and serves as a fault current path, enhancing safety.​ PVC Outer Sheath: The outermost layer is made of polyvinyl chloride (PVC), which offers good mechanical protection, flame retardancy, and resistance to weathering. It safeguards the internal components from external damage, extending the cable's service life.​ 3. Performance Characteristics​ 3.1 Electrical Performance​ Voltage Rating: Designed for 11kv systems, it can withstand the electrical stress of medium-voltage power transmission.​ Current-Carrying Capacity: With 70mm² conductors, it has a high current-carrying capacity, typically around 200-250A depending on installation conditions, ensuring efficient power delivery.​ Low Losses: The high-purity aluminum conductors and XLPE insulation minimize power losses, improving the overall efficiency of the power distribution system.​ 3.2 Mechanical and Environmental Performance​ Mechanical Strength: The stranded conductors and multi-layered structure provide good tensile strength and flexibility, allowing for easy installation and withstanding the stresses of overhead suspension.​ Weather Resistance: The PVC outer sheath and XLPE insulation make the cable resistant to UV radiation, moisture, and temperature variations (-40°C to +70°C), ensuring stable operation in diverse climatic conditions.​ Flame Retardancy: The PVC sheath offers flame-retardant properties, reducing the risk of fire spread in case of accidents.​ 4. Application Scenarios​ Urban Power Distribution: Suitable for distributing power in urban areas, connecting substations to residential and commercial districts. Its compact design and reliable performance make it ideal for crowded urban environments.​ Rural Electrification: Perfect for rural areas with complex terrains, providing efficient power transmission to villages and remote settlements. Its durability and weather resistance ensure long-term operation in harsh rural conditions.​ Industrial Zones: Used in industrial parks to supply power to factories and manufacturing facilities, handling the medium-voltage power requirements of industrial equipment.​ 5. Conclusion​ The 11kv 70mm² Al/Sc/XLPE/Sc/Cut/PVC 3+1 Aerial Bundled Conductor Cable is a reliable and efficient solution for medium-voltage overhead power distribution. Its advanced structural design, high-quality materials, and excellent performance characteristics make it suitable for various applications, ensuring safe and stable power transmission.

11kv 70mm² Al/Sc/XLPE/Sc/Cut/PVC 3+1 Aerial Bundled Conductor Cable Abstract​ 1. Product Overview​ The 11kv 70mm² Al/Sc/XLPE/Sc/Cut/PVC 3+1 Aerial Bundled Conductor Cable is a high-performance overhead power cable designed for medium-voltage distribution networks. The "3+1" configuration indicates three 70mm² phase conductors and one neutral conductor, while the material code "Al/Sc/XLPE/Sc/Cut/PVC" details its layered structure: aluminum conductors, semiconducting layers, cross-linked polyethylene (XLPE) insulation, copper tape shielding, and a PVC outer sheath. This cable integrates multiple functional layers to ensure safe, efficient power transmission in overhead applications across urban, rural, and industrial areas.​ 2. Structural Composition​ 2.1 Conductors and Core Layers​ The three phase conductors and one neutral conductor are made of high-purity aluminum (1350 series) with 61% IACS conductivity, stranded for flexibility. Each conductor is wrapped in an inner semiconducting (Sc) layer to ensure uniform electric field distribution. The main insulation consists of 1.4-1.8mm thick XLPE, providing excellent dielectric strength and thermal resistance, critical for 11kV operation.​ 2.2 Shielding and Sheath​ An outer semiconducting layer covers the XLPE insulation, followed by a copper tape (Cut) shield to contain electromagnetic interference. The entire bundle is encased in a 1.2-1.5mm thick PVC sheath, offering UV resistance, moisture protection, and mechanical durability. This layered structure balances electrical performance with environmental resilience.​ 3. Performance Characteristics​ 3.1 Electrical Performance​ Voltage and Current Handling: Rated for 11kV, with each 70mm² conductor carrying 220-250A continuously (30°C ambient), suitable for medium-voltage distribution loads.​ Dielectric Strength: XLPE insulation provides >25kV/mm strength, withstanding 30kV AC for 10 minutes in withstand tests.​ Shielding Effectiveness: Copper tape shield reduces electromagnetic interference by >90%, ensuring signal integrity in nearby communication lines.​ 3.2 Mechanical and Environmental Performance​ Tensile Strength: Stranded aluminum conductors and PVC sheath enable spans up to 80 meters, with a breaking load of 8-10kN.​ Temperature Resistance: Operates reliably at -40°C to +90°C, with XLPE retaining properties under short-term overloads up to 130°C.​ Weather Resistance: UV-stabilized PVC sheath resists sunlight degradation, while moisture barriers prevent water ingress, ensuring 30+ years of service life.​ 4. Application Scenarios​ Urban Distribution: Connecting substations to commercial and residential areas, where its compact design reduces visual impact.​ Rural Networks: Withstanding harsh weather in remote areas, minimizing maintenance needs over long spans.​ Industrial Zones: Powering factories and industrial parks, where shielding protects against electrical noise from machinery.​ Renewable Energy Links: Transmitting power from wind or solar farms to the grid, adapting to outdoor conditions.​ 5. Conclusion​ This 11kV aerial bundled cable combines advanced materials and engineering to deliver reliable medium-voltage power transmission. Its layered structure—from aluminum conductors to PVC sheath—ensures electrical efficiency, mechanical robustness, and environmental resistance, making it a versatile solution for modern distribution networks.