EP 0664551 A3 19950830 -
Publication
Application
Priority
DE 4402121 A 19940121
Abstract (en)
[origin: EP0664551A2] An electrical high voltage power switch has a pair of switching contacts (1, 2) that are hollow for the passage of extinguishing gas. An arcing space (4) connects with a heating volume (8) and the extinguishing gas is heated and passes through a gap. The drive side has a compression arrangement (12, 13) and a second compression arrangement (16, 17) is on the other side. During switching the compression piston (17) moves to reduce the volume and extinguishing gas is forced through a channel (20) and into the heating volume to provide the required action.
IPC 1-7
IPC 8 full level
H01H 33/90 (2006.01); H01H 33/91 (2006.01); H01H 33/915 (2006.01); H01H 33/985 (2006.01)
CPC (source: EP)
H01H 33/90 (2013.01); H01H 33/901 (2013.01); H01H 33/91 (2013.01); H01H 2033/907 (2013.01); H01H 2033/908 (2013.01)
Citation (search report)
- [Y] WO 9214255 A1 19920820 - SIEMENS AG [DE]
- [Y] DE 3124075 A1 19820916 - SLAMECKA ERNST
- [Y] EP 0019806 A1 19801210 - MITSUBISHI ELECTRIC CORP [JP]
- [A] CH 524886 A 19720630 - BBC BROWN BOVERI & CIE [CH]
- [A] FR 2352386 A1 19771216 - MERLIN GERIN [FR]
- [A] PATENT ABSTRACTS OF JAPAN vol. 016, no. 037 (E - 1160) 29 January 1992 (1992-01-29)
Designated contracting state (EPC)
AT CH DE FR GB IT LI NL SE
DOCDB simple family (publication)
EP 0664551 A2 19950726; EP 0664551 A3 19950830; DE 4402121 A1 19950727
DOCDB simple family (application)
EP 94250300 A 19941221; DE 4402121 A 19940121