POWER CABLE

The present invention relates to a power cable and, particularly, to an extra-high voltage underground or submarine cable. Particularly, the present invention relates to a power cable in which an insulation layer, itself, has high dielectric strength, an electric field to be applied to the insulation layer is effectively buffered, degradation of the insulation layer can be prevented during a cable connection step such that the life of the power cable is extended and simultaneously, the thickness of the insulation layer is minimized such that an outer diameter of the cable is reduced, thereby enabling flexibility, ease of installation, workability and the like of the cable to be improved.