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.