公开(公告)号：US10355470B2

公开(公告)日：2019-07-16

申请号：US15935724

申请日：2018-03-26

Applicant: ABB Schweiz AG

Inventor： Jan Czyzewski ,  Victoria Maurer ,  Radim Lichy ,  Torbjorn Sorqvist

IPC: H01B7/02 ,  H01R4/18 ,  H01R11/26 ,  H02G15/02 ,  H02G15/06 ,  H02G15/064 ,  H02G15/072

Abstract: A high-voltage cable fitting, typically a cable end termination or a cable joint, includes coaxially arranged around an axis a rigid conical insulator, an electrically insulating, elastomeric stress-relief cone matching the rigid conical insulator through a conical interface and an axially aligned current path. The current path connects a conductor of the cable to a high-voltage current terminal arranged on top of the rigid conical insulator and provided for connection to a high-voltage component. The rigid conical insulator is configured as a condenser core and includes a plurality of electrically conductive field-grading layers, which are arranged concentrically around the axis, and a rigid polymeric matrix which embeds the field-grading layers. In order to keep the size of the cable fitting small and to enable the fitting to carry high rated continuous currents a section of the cable conductor, which is stripped off the insulation of the cable, extends from the conical interface to the high-voltage current terminal and forms the axially aligned current path, and the condenser core comprises an axially aligned tubular duct which receives the stripped-off section of the cable conductor and which passes two opposing front faces of the condenser core.

公开(公告)号：US20180219369A1

公开(公告)日：2018-08-02

申请号：US15935724

申请日：2018-03-26

Applicant: ABB Schweiz AG

Inventor： Jan Czyzewski ,  Victoria Maurer ,  Radim Lichy ,  Torbjorn Sorqvist

IPC: H02G15/06 ,  H01B7/02

CPC classification number: H02G15/06 ,  H01B7/02 ,  H01R4/183 ,  H01R11/26 ,  H02G15/02 ,  H02G15/064 ,  H02G15/072

Abstract: A high-voltage cable fitting, typically a cable end termination or a cable joint, includes coaxially arranged around an axis a rigid conical insulator, an electrically insulating, elastomeric stress-relief cone matching the rigid conical insulator through a conical interface and an axially aligned current path. The current path connects a conductor of the cable to a high-voltage current terminal arranged on top of the rigid conical insulator and provided for connection to a high-voltage component. The rigid conical insulator is configured as a condenser core and includes a plurality of electrically conductive field-grading layers, which are arranged concentrically around the axis, and a rigid polymeric matrix which embeds the field-grading layers. In order to keep the size of the cable fitting small and to enable the fitting to carry high rated continuous currents a section of the cable conductor, which is stripped off the insulation of the cable, extends from the conical interface to the high-voltage current terminal and forms the axially aligned current path, and the condenser core comprises an axially aligned tubular duct which receives the stripped-off section of the cable conductor and which passes two opposing front faces of the condenser core.

公开(公告)号：US10141683B2

公开(公告)日：2018-11-27

申请号：US15935738

申请日：2018-03-26

Applicant: ABB Schweiz AG

Inventor： Jan Czyzewski ,  Victoria Maurer ,  Radim Lichy ,  Torbjörn Sörqvist

IPC: H01R13/58 ,  H01R13/53 ,  H01R13/52 ,  H02G15/107 ,  H02G15/007 ,  H01R13/59

Abstract: A high-voltage cable fitting with a rigid core insulator that has a first conical outer surface extending concentrically about a longitudinal axis. An elastomeric stress relief element has a first conical inner surface is designed for mating the first conical outer surface at an interface. A rigid member is provided for pressurizing the elastomeric stress relief element at the interface. The stress relief element is pressed onto the rigid core insulator. The rigid member has at least one pressure enhancing portion extending circumferential about the longitudinal axis for causing an additional axial expansion stress in a sleeve portion of the stress relief element extending along the first conical outer surface of the core insulator in an assembled state of the cable fitting.

公开(公告)号：US20180219323A1

公开(公告)日：2018-08-02

申请号：US15935738

申请日：2018-03-26

Applicant: ABB Schweiz AG

Inventor： Jan Czyzewski ,  Victoria Maurer ,  Radim Lichy ,  Torbjörn Söqvist

IPC: H01R13/53 ,  H01R13/52 ,  H01R13/59 ,  H02G15/007 ,  H02G15/107

CPC classification number: H01R13/53 ,  H01R13/5205 ,  H01R13/59 ,  H02G15/007 ,  H02G15/064 ,  H02G15/103 ,  H02G15/107

Abstract: A high-voltage cable fitting with a rigid core insulator that has a first conical outer surface extending concentrically about a longitudinal axis. An elastomeric stress relief element has a first conical inner surface is designed for mating the first conical outer surface at an interface. A rigid member is provided for pressurizing the elastomeric stress relief element at the interface. The stress relief element is pressed onto the rigid core insulator. The rigid member has at least one pressure enhancing portion extending circumferential about the longitudinal axis for causing an additional axial expansion stress in a sleeve portion of the stress relief element extending along the first conical outer surface of the core insulator in an assembled state of the cable fitting.