EP 0388323 A1 19900919 - Autoexpansion electric circuit breaker with insulating gas.
Title (en)
Autoexpansion electric circuit breaker with insulating gas.
Title (de)
Elektrischer Autoexpansionsschalter mit Isoliergas.
Title (fr)
Disjoncteur électrique à auto-expansion et à gaz isolant.
Publication
Application
Priority
FR 8903642 A 19890317
Abstract (en)
The inside of the tubular contacts (20,24) of an autoexpansion, SF6 gas circuit-breaker comprises guide ribs (56,58) arranged so as to oppose any vortex-effect swirling gas flow between the first disconnection chamber (26) and the second expansion chamber. The presence of these ribs improves the dielectric strength of the circuit-breaker and prevents any refiring of the arc inside the contacts. <IMAGE>
IPC 1-7
IPC 8 full level
H01H 33/18 (2006.01); H01H 33/70 (2006.01); H01H 33/98 (2006.01); H01H 33/985 (2006.01)
CPC (source: EP US)
H01H 33/7046 (2013.01 - EP US); H01H 33/982 (2013.01 - EP US)
Citation (search report)
- [YD] EP 0298809 A1 19890111 - MERLIN GERIN [FR]
- [Y] EP 0075668 A2 19830406 - SPRECHER & SCHUH AG [CH]
- [A] EP 0042456 A1 19811230 - BBC BROWN BOVERI & CIE [CH]
- [A] EP 0080690 A2 19830608 - INST PRUEFFELD ELEKT [DD]
- [A] DE 1891058 U 19640416 - BBC BROWN BOVERI & CIE [CH]
- [A] DE 812088 C 19510827 - SCHOPPE & FAESER
Designated contracting state (EPC)
BE CH DE ES GB IT LI
DOCDB simple family (publication)
EP 0388323 A1 19900919; EP 0388323 B1 19940601; DE 69009253 D1 19940707; FR 2644624 A1 19900921; FR 2644624 B1 19960322; JP H02281522 A 19901119; US 5057655 A 19911015
DOCDB simple family (application)
EP 90420100 A 19900226; DE 69009253 T 19900226; FR 8903642 A 19890317; JP 5630190 A 19900307; US 49376890 A 19900315