Arrangement for overvoltage protection of subsea electrical apparatus

    公开(公告)号:US11705274B2

    公开(公告)日:2023-07-18

    申请号:US17356669

    申请日:2021-06-24

    申请人: ABB Schweiz AG

    摘要: An arrangement for an overvoltage protection of a subsea electrical apparatus and a method for operating it. The arrangement includes a tank submersible below a water surface level, an electrical apparatus accommodated in the tank, and a surge arrester arrangement accommodated in the tank and coupled to a power supply of the electrical apparatus in the tank for providing the overvoltage protection of the electrical apparatus. The arrangement further includes a controllable grounding switch for connecting the surge arrester arrangement to a ground point in response to a control of the grounding switch to a closed state and for disconnecting the surge arrester arrangement from the ground point in response to a control of the grounding switch to an open state.

    Heat exchanging arrangement and subsea electronic system

    公开(公告)号:US11419241B2

    公开(公告)日:2022-08-16

    申请号:US16604476

    申请日:2018-04-04

    申请人: ABB Schweiz AG

    IPC分类号: H05K7/20 F28F1/40 H01L23/473

    摘要: A heat exchanging arrangement for a subsea electronic system, the heat exchanging arrangement including: at least one pipe having an external surface; and at least one heat exchanging element arranged inside the at least one pipe and defining at least one internal passage for conducting a dielectric fluid through the at least one pipe; wherein the at least one heat exchanging element is arranged to press laterally outwards against an internal surface of the at least one pipe to establish a heat transfer bond between the at least one heat exchanging element and the at least one pipe. A subsea electronic system including the heat exchanging arrangement is also provided.

    Power capacitor unit for high pressure applications

    公开(公告)号:US10276304B2

    公开(公告)日:2019-04-30

    申请号:US15781344

    申请日:2016-10-10

    申请人: ABB Schweiz AG

    摘要: A power capacitor unit for high-pressure applications is provided. The power capacitor unit includes a housing, a plurality of capacitor elements connected to each other and arranged inside the housing, a dielectric liquid (L), a solid electrical insulation system arranged to electrically insulate each capacitor element, a busbar, a plurality of fuse wires, each fuse wire having a first end connected to a respective capacitor element and a second end connected to the busbar (B), wherein the capacitor elements, the solid electrical insulation system, and the fuse wires are immersed in the dielectric liquid (L). Each fuse wire has a plurality of first sections that are in physical contact with the electrical insulation system, and wherein each fuse wire has a plurality of second sections without physical contact with the solid electrical insulation system.