EP 0290950 B1 19930414 - PRESSURIZED-GAS CIRCUIT BREAKER
Title (en)
PRESSURIZED-GAS CIRCUIT BREAKER
Publication
Application
Priority
CH 184087 A 19870513
Abstract (en)
[origin: US4798924A] The compressed-gas breaker exhibits two contact members (3; 11, 12, 13), of which one (11, 12, 13) is constructed as a nozzle, and an insulating nozzle (5) and a heating volume (8) for storing switching-arc-generated compressed gas. This breaker is intended to be distinguished by a high pressure buildup in the heating volume (8) and a great thermal quenching capacity. This is achieved by a multi-part construction of the contact member (11, 12, 13) acting as a nozzle. In particular, this contact member (11, 12, 13) exhibits a tubular body (13), which is axially displaceably conducted in a contact carrier (11), of erosion-resistant contact material, which, during interruption, forms the nozzle constriction (19) of this contact member (11, 12, 13) while under the action of a spring (15).
IPC 1-7
IPC 8 full level
H01H 33/91 (2006.01); H01H 33/70 (2006.01); H01H 33/915 (2006.01); H01H 33/98 (2006.01); H01H 33/985 (2006.01)
CPC (source: EP US)
H01H 33/7023 (2013.01 - EP US); H01H 33/98 (2013.01 - EP US)
Designated contracting state (EPC)
CH DE FR IT LI
DOCDB simple family (publication)
EP 0290950 A1 19881117; EP 0290950 B1 19930414; DE 3880190 D1 19930519; JP S63292538 A 19881129; US 4798924 A 19890117
DOCDB simple family (application)
EP 88107191 A 19880505; DE 3880190 T 19880505; JP 11371888 A 19880512; US 19401988 A 19880512