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    A METHOD FOR PRODUCING A TRANSFORMER
    1.
    发明公开
    A METHOD FOR PRODUCING A TRANSFORMER 审中-公开

    公开(公告)号：EP4372773A1

    公开(公告)日：2024-05-22

    申请号：EP22208680.3

    申请日：2022-11-21

    Applicant: ABB Schweiz AG

    Inventor： Banaszczyk, Jedrzej ,  Michalik, Adam ,  Rzepecki, Michal

    IPC: H01F41/12 ,  H01F27/32 ,  H01B3/47

    CPC classification number: H01F41/127 ,  H01F27/327 ,  H01B3/47 ,  H01B3/40 ,  H01B3/46

    Abstract: A method for producing a transformer (1), in particular a medium voltage instrument transformer, comprising the steps of winding (101) a coil of a transformer (1) with an insulation material (2) comprising capsules (3) with a chemical initiator (4), preparing (102) an active part of the transformer (1), wherein the active part comprises the wound coil, casting (103) the active part of the transformer (1) with an impregnation material (7), wherein the impregnation material (7) is an epoxy resin or a silicone; increasing (105) a temperature of the active part of the transformer (1) to release chemical initiator (4) from the capsules (3) to allow cross-linking, while the cross-linking is carried out until curing of the impregnation material (7); and cooling (106) the transformer (1). Further, after the step of casting (103) the active part of the transformer (1) and before the step of increasing (105) the temperature of said active part to allow cross-linking, a temperature of the active part of the transformer (1) is increased (104) to reduce the viscosity of the impregnation material (7), and said cross-linking is initiated by a temperature higher than the activation temperature of the chemical initiator (4) to release the chemical initiator (4) from the capsules (3). Furthermore, the insulation material (2) is poly(ethylene terephthalate) non-woven porous fabric, polypropylene non-woven fabric, fiberglass or crepe paper. The insulation material (2) has distributed on its surface the chemical initiator (4) encapsulated in capsules (3). The capsules (3) are adapted to release the chemical initiator (4) in a temperature higher than an activation temperature of the chemical initiator (4).

    COOLING APPARATUS FOR A MEDIUM VOLTAGE OR HIGH VOLTAGE SWITCHGEAR
    2.
    发明公开
    COOLING APPARATUS FOR A MEDIUM VOLTAGE OR HIGH VOLTAGE SWITCHGEAR 审中-公开

    公开(公告)号：EP3742461A1

    公开(公告)日：2020-11-25

    申请号：EP19175434.0

    申请日：2019-05-20

    Applicant: ABB Schweiz AG

    Inventor： Keßler, Michael ,  Sologubenko, Oleksandr ,  Hemrle, Jaroslav ,  Rybak, Andrzej ,  Michalik, Adam

    IPC: H01H9/52 ,  H02G5/10 ,  H02B1/56 ,  H01H1/62

    Abstract: The present invention relates to a cooling apparatus for a medium voltage or high voltage switchgear, the cooling apparatus comprising:
    - an evaporator section;
    - a fluid conduit; and
    - a condenser section.
    The evaporator section is configured to surround at least part of a current carrying contact. The fluid conduit fluidly connects the evaporator section to the condenser section. A section of the fluid conduit is formed within the evaporator section and is electrically insulating and is configured such that fluid can contact an outer surface of the current carrying contact. The cooling apparatus is configured such that in use a working fluid in the evaporator section is heated to a vapour state, and the vapour is transferred by the fluid conduit to the condenser section. The vapour in the condenser section is condensed to the working fluid. The condensed working fluid is passively returned via the fluid conduit to the evaporator section.

    AN ATMOSPHERIC CORROSION SENSOR
    4.
    发明公开
    AN ATMOSPHERIC CORROSION SENSOR 审中-公开

    公开(公告)号：EP4545939A1

    公开(公告)日：2025-04-30

    申请号：EP23205862.8

    申请日：2023-10-25

    Applicant: ABB Schweiz AG

    Inventor： Pypec, Stefan ,  Wawrzola, Grzegorz Piotr ,  Michalik, Adam ,  Siwek, Artur

    IPC: G01N17/00 ,  G01N17/02 ,  G01N27/26

    Abstract: The invention reveals an atmospheric corrosion sensor (1) for detecting corrosion of electrical equipment due to corrosive gas comprising at least one atmospheric corrosion sensing structure (2) placed on at least one insulated corrosion sensor substrate (3) wherein said atmospheric corrosion sensor (1) comprises at least one gas permeable layer (4) placed on the corrosion sensing structure (2) wherein said gas permeable layer (4) allows for transferring the molecules of corrosive gases present in the atmosphere to the surface of the sensing structure (2), opposite to insulated corrosion sensor substrate (3), causing it to corrode.

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