NF C 33-226 Hta Cis 12/20kv 3X240mm Mv CableAbstract​ 1. Product Overview​ The NF C 33-226 Hta Cis 12/20kv 3X240mm Mv Cable is a high-performance medium-voltage power cable designed in compliance with the French standard NF C 33-226. The "12/20kV" rating indicates it operates at 12kV phase-to-ground and 20kV phase-to-phase, while "3X240mm" denotes three 240mm² conductors. The "Hta Cis" designation highlights its heat-resistant properties and suitability for industrial and infrastructure applications, making it a reliable choice for medium-voltage power transmission in demanding environments.​ 2. Structural Composition​ 2.1 Conductors​ The cable features three 240mm² conductors made of high-purity copper or aluminum, ensuring excellent electrical conductivity. Copper conductors offer 100% IACS conductivity, while aluminum options provide 61% IACS, both stranded to enhance flexibility for installation. The stranded design also improves tensile strength, allowing the cable to withstand mechanical stresses during deployment.​ 2.2 Insulation and Sheathing​ Each conductor is insulated with cross-linked polyethylene (XLPE), a material known for its high dielectric strength (>25kV/mm) and thermal resistance. This insulation layer, typically 2.0-2.5mm thick, is wrapped in a semiconducting layer to ensure uniform electric field distribution. The cable is further protected by a galvanized steel tape armor and a PVC or PE outer sheath, offering resistance to moisture, abrasion, and environmental contaminants.​ 3. Performance Characteristics​ 3.1 Electrical Performance​ Voltage and Current Handling: Rated for 12/20kV, with each 240mm² conductor carrying 400-450A continuously (30°C ambient), suitable for heavy-duty medium-voltage applications.​ Dielectric Strength: XLPE insulation withstands 45kV AC for 10 minutes in withstand tests, ensuring reliable operation under high-voltage conditions.​ Low Losses: Minimal conductor and dielectric losses, with AC resistance at 50Hz around 0.085Ω/km per conductor, optimizing energy efficiency.​ 3.2 Mechanical and Environiciency.​ 3.2 Mechanical and Environmental Performance​ Tensile Strength: Steel armor provides a breaking load of 15-20kN, enabling installation in underground or duct environments with spans up to 60 meters.​ Temperature Resistance: Operates reliably at -40°C to +90°C, with short-term overload capability up to 130°C, adapting to varying thermal conditions.​ Durability: Resistant to UV radiation, chemicals, and corrosion, ensuring a service life of 30+ years in industrial, urban, and underground settings.​ 4. Application Scenarios​ Industrial Facilities: Powering factories, refineries, and manufacturing plants with high power demands, where reliability and heat resistance are critical.​ Urban Distribution Networks: Connecting substations to commercial districts and high-rise buildings, withstanding urban environmental stresses.​ Infrastructure Projects: Supporting power transmission in airports, railways, and large-scale construction sites, compatible with underground and duct installations.​ Renewable Energy Plants: Transmitting power from solar farms and wind parks to the grid, enduring outdoor and remote conditions.​ 5. Conclusion​ The NF C 33-226 Hta Cis 12/20kv 3X240mm Mv Cable combines compliance with strict French standards, robust construction, and high performance. Its XLPE insulation, strong conductors, and protective sheathing make it an ideal solution for reliable medium-voltage power transmission in industrial, urban, and infrastructure applications.