公开(公告)号：EP3503151A1

公开(公告)日：2019-06-26

申请号：EP17209152.2

申请日：2017-12-20

Applicant: ABB Schweiz AG

Inventor： YE, Xiangyang ,  Galletti, Bernardo ,  Dhotre, Mahesh ,  Gotti, Manuel ,  Seeger, Martin

IPC: H01H33/70

Abstract: A circuit breaker (1) includes: first and second contacts (10, 20) moveable relative to each other along an axis (2) of the circuit breaker (1) between an open and closed configuration and defining an arcing region (3) in which an arc is formed during current breaking operation; a nozzle (30) directing a flow of quenching gas onto the arcing region (3) during current breaking operation, a diffusor (40) downstream of the nozzle (30) for further transporting the quenching gas within the arcing region (3) and/or downstream of the arcing region (3), and a mechanical swirling device (50) arranged downstream of the nozzle (30) and at least partially in the diffusor (40) for imparting a swirl onto the quenching gas flowing along the diffusor (40), the mechanical swirling device (50) having an axial overlap with the second contact (20) in the open configuration of the circuit breaker (1).

公开(公告)号：EP3588528A1

公开(公告)日：2020-01-01

申请号：EP19182780.7

申请日：2019-06-27

Applicant: ABB Schweiz AG

Inventor： Gotti, Manuel ,  Costyson, Johan Karl Filip ,  Florez, Javier Mantilla ,  Grob, Stephan

IPC: H01H33/70 ,  H01H71/16

Abstract: A gas-insulated high or medium voltage circuit breaker (100) comprising a first arcing contact (101) and a second arcing contact (103), wherein at least one of the two arcing contacts (101, 103) is axially movable along a switching axis (140), wherein during a breaking operation, an arc (130) between the first arcing contact (101) and the second arcing contact (103) is formed in an arcing region. An electrically conductive armature (120) radially surrounds at least part of a diffuser portion (114) of the nozzle (110); an electrically conductive ring-like element (116) is mounted to the diffuser portion (114) and is slideable relative to the armature (120), and the ring-like element (116) is radially outwardly biased such that an outer side of the ring-like element (116) is pressed against the armature (120).