EP 0374384 A3 19910619 - SINGLE-PRESSURE SWITCH WITH SF6
Title (en)
SINGLE-PRESSURE SWITCH WITH SF6
Publication
Application
Priority
DE 3843406 A 19881223
Abstract (en)
[origin: EP0374384A2] The invention relates to improving a switch in accordance with the Main Patent P 38 10 091. In this switch, low-current arcs are blown via a compression device, it being the case that for high-current arcs a sealing element (8) seals the compression device and self-blowing takes place via a gas storage chamber (9) and a pressure chamber (3). In this switch, after the interruption of a high-current arc, hot gas of low density is present in front of the arc gap. This is disadvantageous for renewed arc blowing. Provision of cold arc-extinguishing gas is effected even in such a switching position when a valve opens upon connection and thereby creates a connection between the pressure chamber (3) and the compression compartment (11), the result being that fresh arc-extinguishing gas is sucked out of the switching chamber into the pressure chamber (3) and is available for renewed arc blowing. <IMAGE>
IPC 1-7
IPC 8 full level
H01H 33/90 (2006.01)
CPC (source: EP)
H01H 33/901 (2013.01); H01H 2033/908 (2013.01)
Citation (search report)
- [A] FR 2575323 A1 19860627 - ALSTHOM ATLANTIQUE [FR]
- [A] DE 3132825 A1 19830113 - SPRECHER & SCHUH AG [CH]
- [A] EP 0239068 A1 19870930 - ALSTHOM [FR]
- [A] CH 568649 A5 19751031 - SPRECHER & SCHUH AG
Designated contracting state (EPC)
CH DE FR LI SE
DOCDB simple family (publication)
EP 0374384 A2 19900627; EP 0374384 A3 19910619; EP 0374384 B1 19941228; DE 58908837 D1 19950209
DOCDB simple family (application)
EP 89117724 A 19890926; DE 58908837 T 19890926