Patent ID: 8609987
Filing Date: 2013-12-17
Classification: H02G

Abstract:
1. A direct current cable termination apparatus for terminating a high voltage direct current cable, the apparatus comprises a current-carrying device comprising a terminal portion of the direct current cable, the cable at least comprising an electrical conductor, a circumferential electrically insulating layer located outside of the electrical conductor, and a circumferential conductive shield located outside of the insulating layer and the electrical conductor, a housing comprising a tubular outer shell with an inner periphery the outer shell defining a longitudinal axis and being formed by an electrically insulating and polymer-containing material, the current-carrying device being adapted to extend in the axial direction of the outer shell, along at least a part of the axial extension of the current-carrying device the outer shell extends axially with a space between its inner periphery and the current-carrying device, the housing is adapted to separate the space from an atmosphere outside the outer shell, and the space is filled with an electrically insulating fluid the outer shell has a first end portion and a second end portion, characterized in that the conductive shield terminates inside the outer shell, in that a geometric field control body formed by an electrically insulating and polymer-containing material is provided inside the outer shell, in that the geometric field control body is positioned around the current-carrying device and extends axially along at least a part of the axial extension of the current-carrying device, in that the geometric field control body adjoins the termination of the conductive shield and contributes to separate the termination of the conductive shield from the space, in that along at least a part of the axial extension of the geometric field control body the outer shell extends axially with a gap between its inner periphery, and the geometric field control body, in that the geometric field control body forms an end portion in the direction toward the second end portion of the outer shell, the end portion of the geometric field control body being fitted into a tubular deflector shell made of an electrically conducting material, and in that the termination of the conductive shield is enclosed by the geometric field control body, the tubular deflector shell and the electrically insulating layer of the terminal portion of the cable.