The structure of a medium-voltage power cable primarily consists of a conductor, an insulation layer, a shielding layer, and a sheath. Conductors are typically made of copper or aluminum; aluminum-core cables, in particular, are widely used due to their lighter weight and lower cost, offering greater economic advantages-especially in long-distance power transmission.
Regarding insulation materials, cross-linked polyethylene (XLPE) is currently the mainstream choice for medium-voltage cables. It offers excellent electrical and thermal properties, effectively ensuring the reliability of the cable during long-term operation. While different brands may vary in their insulation processes, conductor stranding methods, or shielding designs, such differences essentially relate to the level of manufacturing precision and quality control.
