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US 4,831,214 AGranted
High voltage cable joint and method of making same, and high voltage cable termination
AssigneeRaychem Corporation
InventorManfred H. O. Wilck
Life of this patent
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AssigneeRaychem Corporation
InventorManfred H. O. Wilck
Estimating the term…
A joint between high voltage cables is formed by employing a connector having the same diameter as the cable dielectric. A layer of stress controlling material extends from the cable screen on one side of the joint, along the cable dielectric, across the connector, along the dielectric of the other cable and on to the screen of the other cable. A layer of conducting material extends on top of the stress controlling layer and longitudinally encompasses the conductor connector and overlaps the dielectric of both cables. An insulating layer encloses the conductive layer. Further layers of conductive and/or stress controlling material may be applied around the joint. In addition to being used in the formation of a joint between high voltage cables, a layer of stress controlling material with a layer of conducting material on its outer surface is employed in forming a termination of a high voltage cable.
A joint between two high voltage cables each of the type having a cable conductor, insulation around the cable conductor, a screen surrounding the insulation, and an outer jacket overlying the screen, wherein:
A terminated screened high voltage cable of the type having a cable conductor, insulation around the cable conductor, a screen surrounding the insulation, and an outer jacket overlying the screen wherein the outer jacket of the cable is removed to expose the underlying cable screen, the screen is removed to expose the underlying cable insulation, and the insulation is removed to expose the cable conductor;
A method of forming a joint between two high voltage cables each of the type having a cable conductor, insulation around the cable conductor, a screen surrounding the insulation, and an outer jacket overlying the screen, comprising the steps of removing the outer jacket of each cable to expose the underlying cable screen, removing the cable screen to expose the underlying cable insulation, removing the insulation to expose the underlying cable conductor, applying a connector to connect the conductors of the cables together, disposing a layer of electrical stress control material around the cables so as to enclose the connector, the insulation of each cable, and to overlap and contact the screen of each cable, and disposing a layer of conductive material around the stress control material so as to enclose the connector and to extend partway only along the insulation of each of the cables.
Dependencies are inferred from the claim text.