High Voltage Direct Current Cable Termination Apparatus

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 out-side the outer shell, characterized
• in that the apparatus comprises a partition which separates the space into a first chamber and a second chamber,
• in that the first chamber is filled with an electrically insulating first fluid and the second chamber is filled with an electrically insulating second fluid other than the first fluid,
• in that the first fluid comprises an electrically insulating gas, and in that the second fluid comprises a liquid filler,
• in that the conductive shield terminates inside the second chamber, and
• in that at least one electric field control member is located within the second chamber in the proximity of the termination of the conductive shield.