EP 0431306 B1 19941012 - Overvoltage limiting circuit breaker.
Title (en)
Overvoltage limiting circuit breaker.
Title (de)
Überspannungsbegrenzender Schalter.
Title (fr)
Disjoncteur limiteur de surtensions.
Publication
Application
Priority
FR 8914433 A 19891103
Abstract (en)
[origin: EP0431306A1] The subject of the invention is an overvoltage limiting circuit-breaker comprising for each phase at least one disconnection chamber consisting of a sealed insulating envelope filled with a gas of high dielectric strength and comprising fixed and moving main contacts and fixed and moving arc contacts, and a means of driving the moving contacts, characterised in that the said envelope (1) encloses a varistor (20) and means of insertion (32, 42) in order: - on the opening of the circuit-breaker, to insert the varistor (20), in parallel with the contacts, on separation of the main contacts (3, 9) and to disconnect the varistor before the end of opening travel of the moving arc contact (11) - on the closing of the circuit-breaker, to insert the varistor, in parallel with the contacts, before the contacting of the arc contacts (6, 11) and to short-circuit the varistor on contacting of the main contacts (3, 9). <IMAGE>
IPC 1-7
IPC 8 full level
H01H 33/91 (2006.01); H01H 33/16 (2006.01)
CPC (source: EP US)
H01H 33/161 (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 0431306 A1 19910612; EP 0431306 B1 19941012; AT E112888 T1 19941015; BR 9005573 A 19910917; CA 2028592 A1 19910504; CA 2028592 C 19940719; CN 1022594 C 19931027; CN 1051454 A 19910515; DE 69013300 D1 19941117; DE 69013300 T2 19950216; ES 2063226 T3 19950101; FR 2654251 A1 19910510; JP H03179626 A 19910805; US 5262605 A 19931116
DOCDB simple family (application)
EP 90120718 A 19901029; AT 90120718 T 19901029; BR 9005573 A 19901101; CA 2028592 A 19901102; CN 90108832 A 19901103; DE 69013300 T 19901029; ES 90120718 T 19901029; FR 8914433 A 19891103; JP 29705190 A 19901101; US 60732990 A 19901031