EP 0458236 B1 19950104 - Medium high voltage circuit breaker.
Title (en)
Medium high voltage circuit breaker.
Title (de)
Mittelspannungsschalter.
Title (fr)
Disjoncteur à moyenne tension.
Publication
Application
Priority
FR 9006458 A 19900523
Abstract (en)
[origin: EP0458236A1] Medium-voltage circuit-breaker comprising a leaktight insulating envelope (1) filled with a gas with good dielectric properties, a semi-fixed arc contact (3) connected electrically to a first current intake (2) and a moving contact (10) connected to an operating mechanism and connected up electrically to a second current intake (11), characterised in that the semi-fixed arc contact (3) is linked to a piston (4) which can move in a blast volume (VI) delimited in particular by the inner wall of an insulating cylinder (8) inside the said envelope and a first face (7A) of a blast nozzle (7), the said piston being thrust by a spring (9) kept taut when the circuit-breaker is in the engaged position, the said circuit-breaker comprising a thermal expansion volume (V2) delimited in particular by the inner wall of the said insulating cylinder (8), a second face (7B) of the nozzle and a transverse partition (11) through which the moving contact (10) slides, means being provided so that when a high-intensity current is cut, the piston (4), after having accomplished its travel in the direction of compression of the blast volume (V1), cannot move in the opposite direction. <IMAGE>
IPC 1-7
IPC 8 full level
H01H 33/91 (2006.01); H01H 33/90 (2006.01); H01H 33/915 (2006.01)
CPC (source: EP US)
H01H 33/901 (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 0458236 A1 19911127; EP 0458236 B1 19950104; AT E116764 T1 19950115; BR 9102093 A 19911224; CA 2043025 A1 19911124; CA 2043025 C 19941122; CN 1023737 C 19940209; CN 1056371 A 19911120; DE 69106436 D1 19950216; DE 69106436 T2 19950511; DK 0458236 T3 19950522; ES 2067796 T3 19950401; FR 2662540 A1 19911129; FR 2662540 B1 19920731; GR 3015385 T3 19950630; JP 2563856 B2 19961218; JP H04280016 A 19921006; US 5155313 A 19921013
DOCDB simple family (application)
EP 91108128 A 19910521; AT 91108128 T 19910521; BR 9102093 A 19910521; CA 2043025 A 19910522; CN 91103020 A 19910510; DE 69106436 T 19910521; DK 91108128 T 19910521; ES 91108128 T 19910521; FR 9006458 A 19900523; GR 950400538 T 19950313; JP 11628191 A 19910521; US 69187491 A 19910426