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.