Hitachi Energy Ltd

Abb Schweiz Ag

Hitachi Energy Switzerland Ag

Abb Power Grids Switzerland Ag

Abb Research Ltd.

Nils Lavesson

Joachim Schiessling

Jan Czyzewski

Roger Hedlund

Cecilia Forssen

Harald Martini

Peter Sjöberg

Tor Laneryd

Olof Hjortstam

Sebastian Seier

Johan Dahlgren

Håkan Faleke

Jens Rocks

Mats Sandberg

Lukasz Matysiak

Staffan Nordlinder

David Emilsson

Mats Berglund

Henrik Hillborg

Julia Viertel

Erik Wedin

Peter Dyreklev

Ylva Granbom

Henrik Lofas

Mats Dahlund

Lars Walfridsson

Jonas Birgerson

Magnus Svanberg

Francisco Penayo

Peter SJÖBERG

Peter Sidenvall

Peter ÅStrand

An electric device includes a tank and a cable box connected to the tank, the tank and the cable box being filled with an insulating liquid electric connection system for connecting a power cable through the cable box to the tank and a current measuring device for measuring electric current in the electric connection system, wherein the current measuring device is located adjacent to a housing of the cable box.

Electric device comprising liquidfilled tank and cable box with current measuring device

The present disclosure relates to a wound electrical component comprising a wound body comprising a plurality of wound layers of a web of an electrically insulating material around a longitudinal axis of the body. The wound body comprises a plurality of electrically conducting layers of an electrically conducting material, each printed onto a respective separate area of the web in the wound body. An edge zone of at least one of the plurality of electrically conducting layers is connected to a printed high permittivity layer of a high permittivity material along said edge zone such that at least a part of the high permittivity layer extends, printed on the web, beyond the edge zone.

Wound electrical component with layers of a high permittivity material

An insulator for electrically insulating an electrical conductor. The insulator includes a roll defining a central longitudinal through hole along a longitudinal axis of the insulator. The through hole is arranged for allowing an electrical conductor to pass there through. The insulator also includes at least one shed arranged on an outer surface of the roll. The shed includes a shed tip having an outer non-flat curvature defined by a plurality of different radii of curvature and including a most distal point of the shed. An end radius of curvature at the most distal point of the curvature is larger than a first radius of curvature at one side of the most distal point and a second radius of curvature at the other side of the most distal point.

Insulator shed having non-circular tip

Provided is a static electric induction arrangement including: a static electric induction device arranged in a static electric induction device tank; an accessory tank including at least one opening configured to receive an accessory therein; the static electric induction device tank and the accessory tank are intended to be filled with dielectric fluid and are connected via a fluid connection, an upper portion of a cross section of the fluid connection, is located at a first height, the arrangement comprises a heat exchanger connected to the device tank, the device tank includes an outlet that is arranged to lead the dielectric fluid to the heat exchanger and an inlet that is arranged to return the dielectric fluid from the heat exchanger.

Static electric induction arrangement

A composite insulator includes an insulating elongated core, a protective layer surrounding the elongated core, the protective layer including an outer surface with a shed profile and an adhesive primer layer disposed between the elongated core and the protective layer for adhering the protective layer to the elongated core, the adhesive primer layer including a coupling agent and particles of a low resistivity material. The method for producing a composite insulator includes preparing a first solution including a solvent, a coupling agent and particles of a low resistivity material, applying the first solution on at least a part of an envelope surface of an insulating elongated core and thus forming one or more first adhesive primer layers and applying a protective layer onto the first adhesive primer layer on the elongated core, wherein the protective layer includes an outer surface with a shed profile.

Insulator with resistivity gradient

A method for producing an electrical power device having an insulator. The method includes, by means of additive manufacturing, applying a polymeric insulating material forming part of the device. The method also includes, in a subsequent consolidation step, subjecting the insulator to elevated temperature and pressure during a predetermined time period to consolidate the insulator.

Producing power bushing condenser core by additive manufacturing

A high voltage capacitive device having: a non-impregnatable film having a plurality of physically separated regions each defined by a conductive coating provided on the non-impregnatable film, wherein the non-impregnatable film is wound in a plurality of turns to form a plurality of layers, wherein the regions are arranged in overlapping layers in the radial direction, wherein the non-impregnatable film forms a dielectric between adjacent layers of the regions, and wherein the conductive coating of at least some of the regions is provided with a plurality of first radial openings extending through the conductive coating to the non-impregnatable film, which delimits a radial extension of each first radial opening.

High voltage capacitive device

The method relates to an electric device comprising at least two electrodes which are separated by dielectric part. At least one of said electrodes is arranged to be at a floating potential. The dielectric part comprises at least one turn of at least one non-impregnatable electrically insulating film between two neighboring electrodes. The electrodes are bonded to adjacent turns of non-impregnatable insulating film, and adjacent turns of non-impregnatable insulating film, if any, are bonded to each other, so that the turns of non-impregnatable insulating film and the electrodes form a solid body. The invention further relates to a method of manufacturing an electric device, where bonding of at least one turn is performed upon forming of said turn, so that the bonding of said turn to the turn/electrode underneath will commence before said turn has been completely covered by the next turn.

High voltage device and a method of manufacturing a high voltage device

Growing community of inventors

Västerås, Sweden

Nils Lavesson