EP 3840005 B1 20220921 - TWO WAY PISTON INTERRUPTER
Title (en)
TWO WAY PISTON INTERRUPTER
Title (de)
ZWEIWEGE-KOLBENUNTERBRECHER
Title (fr)
INTERRUPTEUR À PISTON À DEUX VOIES
Publication
Application
Priority
EP 19218993 A 20191220
Abstract (en)
[origin: EP3840005A1] A high-voltage self-blast circuit breaker, comprising:an enclosure filled with an interrupting and insulation medium;a contact arrangement held in said enclosure, having first and second contact members being movable relative to each other along an axis during a switching operation, the first contact member comprising a first arcing contact, the second contact member comprising a second arcing contact, the first and second arcing contacts defining an arcing zone therebetween,the first contact member further comprising a heating volume and a nozzle defining a heating channel between the heating volume and the arcing zone;a secondary compression volume configured for being expanded during an opening operation of the high-voltage circuit breaker, and for being compressed during a closing operation of the high-voltage circuit breaker;an inlet check valve arranged between an enclosure volume within the enclosure and the secondary compression volume for allowing a forward flow of the interrupting and insulation medium from the enclosure volume through the inlet check valve into the secondary compression volume during the opening operation of the high-voltage circuit breaker, and for blocking a reverse flow from the secondary compression volume into the enclosure volume during the closing operation of the high-voltage circuit breaker;an outlet check valve arranged between the secondary compression volume and the heating volume for allowing a forward flow of the interrupting and insulation medium from the secondary compression volume through the outlet check valve into the heating volume during the closing operation of the high-voltage circuit breaker, and for blocking a reverse flow from the heating volume into the secondary compression volume during the opening operation of the high-voltage circuit breaker.
IPC 8 full level
H01H 33/90 (2006.01)
CPC (source: EP)
H01H 33/90 (2013.01); H01H 33/91 (2013.01); H01H 2033/906 (2013.01); H01H 2033/907 (2013.01); H01H 2033/908 (2013.01)
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
DOCDB simple family (publication)
DOCDB simple family (application)
EP 19218993 A 20191220