PREFABRICATED CABLE JOINT FOR HIGH ELECTRIC AL STRESSES

摘要

The present invention relates to a jointing body (1) of an essentially elastic material, preferably for high-voltage cables with an extruded insulation, comprising an inner elongated cylindrical electrodes (2), of an electrically conductive material, forming a space (3), which is essentially free of electric field, for jointing together the conductors of the cables, an insulating casing (4) extending around and past the electrode (2) and an outer conductive layer (5), wherein the jointing body (1) exhibits a cylindrical hole (6) for the cables, the diameter of said hole being smaller than the diameter across the insulation of the cables which are to be jointed together, such that an active pressure arises at the boundaries towards the respective cable. The essential feature of the invention is that at least one part (7, 9) of the insulating casing (4) comprises an insulating material with increased permittivity, to control the electric field.