Patents by Inventor Christian Sonehag

Christian Sonehag has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Power cable termination device for gas-insulated switchgear
    Patent number: 9912140
    Abstract: A power cable termination device for a high voltage direct current gas-insulated switchgear including: an outer housing made of an electrically conducting material, connectable to the switchgear; a terminal portion of a power cable, the power cable including an electrical conductor, a circumferential electrically insulating layer, and a circumferential conductive shield which is stripped off along a first part of the power cable; an electric field grading system including a resistive field grading material layer arranged circumferentially around the power cable to axially cover the edge of the conductive shield where the conductive shield is terminated, the resistive field grading material layer being in electrical contact therewith, and a connection device connectable to the gas-insulated switchgear and arranged to provide mechanical support and electrical contact with the gas-insulated switchgear.
    Type: Grant
    Filed: February 19, 2014
    Date of Patent: March 6, 2018
    Assignee: ABB HV Cables (Switzerland) GmbH
    Inventors: Fredrick Fälth, Markus Saltzer, Christian Sonehag, Tomas Ahlberg, Linus Adolfsen, Anders Lindgren
  • Power Cable Termination Device For Gas-Insulated Switchgear
    Publication number: 20170093143
    Abstract: A power cable termination device for a high voltage direct current gas-insulated switchgear including: an outer housing made of an electrically conducting material, connectable to the switchgear; a terminal portion of a power cable, the power cable including an electrical conductor, a circumferential electrically insulating layer, and a circumferential conductive shield which is stripped off along a first part of the power cable; an electric field grading system including a resistive field grading material layer arranged circumferentially around the power cable to axially cover the edge of the conductive shield where the conductive shield is terminated, the resistive field grading material layer being in electrical contact therewith, and a connection device connectable to the gas-insulated switchgear and arranged to provide mechanical support and electrical contact with the gas-insulated switchgear.
    Type: Application
    Filed: February 19, 2014
    Publication date: March 30, 2017
    Inventors: Fredrik Fälth, Markus Saltzer, Christian Sonehag, Tomas Ahlberg, Linus Adolfsen, Anders Lindgren
  • Power cable termination device for gas-insulated switchgear
    Patent number: RE48918
    Abstract: A power cable termination device for a high voltage direct current gas-insulated switchgear including: an outer housing made of an electrically conducting material, connectable to the switchgear; a terminal portion of a power cable, the power cable including an electrical conductor, a circumferential electrically insulating layer, and a circumferential conductive shield which is stripped off along a first part of the power cable; an electric field grading system including a resistive field grading material layer arranged circumferentially around the power cable to axially cover the edge of the conductive shield where the conductive shield is terminated, the resistive field grading material layer being in electrical contact therewith, and a connection device connectable to the gas-insulated switchgear and arranged to provide mechanical support and electrical contact with the gas-insulated switchgear.
    Type: Grant
    Filed: March 6, 2020
    Date of Patent: February 1, 2022
    Assignee: NKT HV Cables AB
    Inventors: Fredrik Fälth, Markus Saltzer, Christian Sonehag, Tomas Ahlberg, Linus Adolfsen, Anders Lindgren