公开(公告)号：EP4485720A1

公开(公告)日：2025-01-01

申请号：EP23182654.6

申请日：2023-06-30

Applicant: ABB SCHWEIZ AG

Inventor： THINGSTAD PETTERSEN, Terje ,  BJERKELY, Magnus ,  LINDQVIST, Björn

IPC: H02B13/045

Abstract: The present invention relates to a metal enclosure (100) for electrical switchgear (170), the metal enclosure is configured to be pressurized above atmospheric pressure, the metal enclosure comprising: metal walls (102, 104, 106, 108, 110, 111) sealing a volume (124) for accommodating the electrical switchgear, the metal walls including a first metal wall (102) arranged opposite a second metal wall (110), wherein the second metal wall comprises elongated pockets (112) on the inside face (140) of the second metal wall, and metal beams (120) arranged and attached in the elongated pockets, the metal beams are configured to strengthen the structural integrity of the second metal wall, a plane of the inside face (140) of the second metal wall is substantially aligned with a plane of a surface (142) of the metal beams that faces inside the metal enclosure.

公开(公告)号：EP3671993A1

公开(公告)日：2020-06-24

申请号：EP18214294.3

申请日：2018-12-20

Applicant: ABB Schweiz AG

Inventor： SINGH, Shailendra ,  SUBBIAH THEVAR, Dukkaiappan ,  SKRYTEN, Pal ,  KRISTOFFERSEN, Martin ,  LINDQVIST, Björn ,  PETTERSEN, Terje

IPC: H02B13/025 ,  H02G5/00

Abstract: An electrical arc absorber system (100) for a switchgear, controlling a current, is described. The arc absorber system includes an impedance reduction system (110) for reducing the impedance of an electrical arc appearing in the switchgear between the current phases or the current phases and the ground. The impedance reduction system reduces the impedance for the electrical arc compared to the impedance of the electrical arc in the medium present in the switchgear. Further, the impedance reduction system (110) comprising at least one arc catcher (111; 112; 113) for the current phases of the current. Also, a switchgear including an arc absorber system and a method for operating a switchgear is described.

公开(公告)号：EP3671783A1

公开(公告)日：2020-06-24

申请号：EP18214507.8

申请日：2018-12-20

Applicant: ABB Schweiz AG

Inventor： HOMAYONIFAR, Pouria ,  LINDQVIST, Björn ,  WELDEAB, Mussie

IPC: H01H3/22

Abstract: A contact assembly (1) configured for a load break switch (7), a load break switch (7) including the contact assembly (1), and a method for closing a circuit path of a contact assembly (1). The contact assembly (1) includes a stationary contact unit (10) and a movable contact unit (20), wherein
the movable contact unit (20) is configured to move between an open position and a closed position via an intermediate position, and
the stationary contact unit (10) is configured, in the intermediate position or closed position, to generate an electromagnetic closing force (50) acting on the movable contact unit (20) with the electromagnetic closing force (50) being directed at least partly in the direction of the closed position.