Patent ID: 9306382
Filing Date: 2016-04-05
CPC Classification: H02G,Y10T

Claim Text:
1. A method of jointing two high voltage impregnated cables, each comprising a conductive core, made of a conductor wrapped in an inner semiconducting layer, a cable insulation layer, impregnated with a first viscous compound, radially external to the conductive core, an outer semiconducting layer radially external to the cable insulation layer, and at least one protecting layer radially external to the outer semiconducting layer, the method comprising: exposing a length of the impregnated cable insulation layer of each cable end by removing the at least one protecting layer and the outer semiconducting layer; exposing a terminal length of the conductor of each cable end by cutting essentially perpendicularly to a longitudinal axis of each cable a portion of the impregnated cable insulation layer and by removing the inner semiconducting layer; mechanically and electrically connecting the conductors; filling at least in part a space left by the removed impregnated cable insulation layer with a conductive insert; providing an intermediate semiconducting layer to surround the conductive insert and abutting on portions of cable insulation layers adjacent to the conductive insert; applying a stratified insulation, impregnated with a second viscous compound, longitudinally overlapping the exposed length of the impregnated cable insulation layer of each cable end and covering the intermediate semiconducting layer; electrically screening the conductors; and tightly containing the first viscous compound, the second viscous compound, or the first and second viscous compounds.