Patents by Inventor Fredrik Fälth

Fredrik Fälth 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).

  • Patent number: 11502498
    Abstract: A power cable termination system including: a power cable having a power cable conductor and a power cable insulation system configured to electrically insulate the power cable conductor, a termination cable having a termination cable conductor and a termination cable insulation system configured to electrically insulate the termination cable insulation system, wherein the termination cable is at least one order of magnitude shorter than the power cable, wherein the termination cable conductor has an electrical resistance which is lower than the electrical resistance of the power cable conductor and/or the termination cable insulation system has a higher insulation resistance per unit length than the power cable insulation system, a joint configured to join the power cable and the termination cable, and a cable termination device configured to terminate the termination cable.
    Type: Grant
    Filed: June 4, 2020
    Date of Patent: November 15, 2022
    Assignee: NKT HV Cables AB
    Inventor: Fredrik Fälth
  • Publication number: 20220200260
    Abstract: A power cable termination system including: a power cable having a power cable conductor and a power cable insulation system configured to electrically insulate the power cable conductor, a termination cable having a termination cable conductor and a termination cable insulation system configured to electrically insulate the termination cable insulation system, wherein the termination cable is at least one order of magnitude shorter than the power cable, wherein the termination cable conductor has an electrical resistance which is lower than the electrical resistance of the power cable conductor and/or the termination cable insulation system has a higher insulation resistance per unit length than the power cable insulation system, a joint configured to join the power cable and the termination cable, and a cable termination device configured to terminate the termination cable.
    Type: Application
    Filed: June 4, 2020
    Publication date: June 23, 2022
    Inventor: Fredrik Fälth
  • Patent number: 10193243
    Abstract: The present disclosure relates to a high voltage power cable joint device including: an elongated conductive connector having a first and second end faces, a field control body having a first semiconducting layer arranged circumferentially around the entire connector, and extending beyond the end faces, wherein the first and second end faces are provided with first and second bore sections which extend parallel with and are arranged offset from the central axis of the connector. The connector has an outer surface that has a first and second outer portions where the connector wall is generally the thinnest towards the first and second bore sections. Furthermore, the connector has a straight first through-opening which extends from the first outer surface portion to the first bore section, wherein a straight second through-opening is axially displaced from the first through-opening and extends from the second outer surface portion to the second bore section.
    Type: Grant
    Filed: November 15, 2016
    Date of Patent: January 29, 2019
    Assignee: NKT HV Cables GmbH
    Inventors: Markus Saltzer, Fredrik Fälth, Fredrik Axelsson
  • Patent number: 10158219
    Abstract: An electric field control device for a high voltage cable includes a stress cone and a field grading adapter, wherein the stress cone and the field grading adapter are chemically bonded by vulcanization. An electric installation includes a power cable and the electric field control device. A method for producing the electric field control device is also disclosed.
    Type: Grant
    Filed: August 22, 2014
    Date of Patent: December 18, 2018
    Assignee: ABB HV CABLES (SWITZERLAND) GMBH
    Inventors: Fredrik Fälth, Markus Saltzer, Santhosh Bvmp, Hossein Ghorbani
  • Publication number: 20180358714
    Abstract: The present disclosure relates to a high voltage power cable joint device including: an elongated conductive connector having a first and second end faces, a field control body having a first semiconducting layer arranged circumferentially around the entire connector, and extending beyond the end faces, wherein the first and second end faces are provided with first and second bore sections which extend parallel with and are arranged offset from the central axis of the connector. The connector has an outer surface that has a first and second outer portions where the connector wall is generally the thinnest towards the first and second bore sections. Furthermore, the connector has a straight first through-opening which extends from the first outer surface portion to the first bore section, wherein a straight second through-opening is axially displaced from the first through-opening and extends from the second outer surface portion to the second bore section.
    Type: Application
    Filed: November 15, 2016
    Publication date: December 13, 2018
    Inventors: Markus Saltzer, Fredrik Fälth, Fredrik Axelsson
  • Publication number: 20170244235
    Abstract: An electric field control device for a high voltage cable includes a stress cone and a field grading adapter, wherein the stress cone and the field grading adapter are chemically bonded by vulcanization. An electric installation includes a power cable and the electric field control device. A method for producing the electric field control device is also disclosed.
    Type: Application
    Filed: August 22, 2014
    Publication date: August 24, 2017
    Applicant: HV CABLES (SWITZERLAND) GMBH
    Inventors: Fredrik FÄLTH, Markus SALTZER, Santhosh BVMP, Hossein GHORBANI
  • 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
  • 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