Power cables with copper conductor, XLPE insulation, corrugated aluminum sheath for rated voltage of 290/500kV is a key high-performance cable product in ultra-high voltage (UHV) transmission systems, designed for long-distance, high-capacity power transmission. This cable utilizes a high-conductivity copper conductor combined with a cross-linked polyethylene (XLPE) insulation layer, offering excellent dielectric and heat resistance. It can operate stably and long-term at a rated temperature of 90°C and withstand transient shocks up to 250°C under short-circuit conditions.
The outer sheath utilizes a corrugated aluminum sheath structure, which not only enhances mechanical strength and flexibility but also resists moisture, corrosion, and electromagnetic interference, ensuring long-term, safe operation in complex environments, including underground and tunnels. Compared to traditional oil-impregnated paper-insulated cables, this product offers lower dielectric loss, higher transmission capacity, easier installation, and is environmentally friendly and maintenance-free. With the advantages of safe and reliable ultra-high voltage, ultra-large capacity transmission, and durable protection, this cable is widely used in ultra-high voltage transmission lines, cross-regional power grid projects, key substations and large-scale industrial power supply systems. It is the preferred high-voltage cable to ensure stable, efficient and safe operation of the power grid.