EP 0380907 B1 19940309 - High and medium voltage gas blast circuit breaker.
Title (en)
High and medium voltage gas blast circuit breaker.
Title (de)
Druckgasschalter für Hoch- und Mittelspannung.
Title (fr)
Disjoncteur à haute et moyenne tension à gaz de soufflage.
Publication
Application
Priority
FR 8900009 A 19890102
Abstract (en)
[origin: EP0380907A1] High and medium voltage gas-blast circuit-breaker comprising a pressurised dielectric gas-filled cylindrical insulating surround, a main stationary contact (2), a stationary arc contact (3) and a movable gadget connected to an operating member comprising a main moving contact (5A), a moving arc contact (4A) and a blast cylinder (5) associated with a blast nozzle (6) and co-operating with a first piston (13), a second piston (14) integral with the movable gadget and sliding in a second stationary cylinder (8B), characterised in that the second piston (14) has a large cross-section in relation to the cross-section of the blast cylinder, the said second piston being associated with means (15) of low charge loss communication with the arc zone, the said second piston being drilled with calibrated orifices (14C) in order to limit the pressure on that face of the said piston receiving the gases heated by the arc. <??>Applications to high and medium voltage circuit-breakers. <IMAGE>
IPC 1-7
IPC 8 full level
H01H 33/90 (2006.01); H01H 33/91 (2006.01); H01H 33/915 (2006.01); H01H 33/95 (2006.01)
CPC (source: EP US)
H01H 33/903 (2013.01 - EP US); H01H 2033/908 (2013.01 - EP US)
Designated contracting state (EPC)
AT BE CH DE DK ES FR GB GR IT LI LU NL SE
DOCDB simple family (publication)
EP 0380907 A1 19900808; EP 0380907 B1 19940309; EP 0380907 B2 19961211; AT E102741 T1 19940315; BR 9000007 A 19901009; CA 2006934 A1 19900702; CA 2006934 C 19940426; CN 1016548 B 19920506; CN 1044008 A 19900718; DE 69007136 D1 19940414; DE 69007136 T2 19940616; DE 69007136 T3 19970306; FR 2641409 A1 19900706; FR 2641409 B1 19960426; JP 2655733 B2 19970924; JP H02230625 A 19900913; US 4983789 A 19910108
DOCDB simple family (application)
EP 90100019 A 19900102; AT 90100019 T 19900102; BR 9000007 A 19900102; CA 2006934 A 19891229; CN 89109654 A 19891231; DE 69007136 T 19900102; FR 8900009 A 19890102; JP 34512589 A 19891228; US 45989390 A 19900102