EP 3338289 A1 20180627 - ELECTRICAL SWITCHING DEVICE AND PROCESS FOR COOLING A SWITCHING MEDIUM IN AN ELECTRICAL SWITCHING DEVICE
Title (en)
ELECTRICAL SWITCHING DEVICE AND PROCESS FOR COOLING A SWITCHING MEDIUM IN AN ELECTRICAL SWITCHING DEVICE
Title (de)
ELEKTRISCHE SCHALTVORRICHTUNG UND VERFAHREN ZUM KÜHLEN EINES SCHALTMEDIUMS IN EINER ELEKTRISCHEN SCHALTVORRICHTUNG
Title (fr)
DISPOSITIF DE COMMUTATION ÉLECTRIQUE ET PROCÉDÉ DE REFROIDISSEMENT D'UN MILIEU DE COMMUTATION DANS UN DISPOSITIF DE COMMUTATION ÉLECTRIQUE
Publication
Application
Priority
- EP 2015069286 W 20150821
- EP 2016069538 W 20160817
Abstract (en)
[origin: WO2017032667A1] The invention relates to an electrical switching device with a switching chamber (10), which comprises at least two arcing contacts (192, 192) movable in relation to each other and defining an arcing region (22) in which an arc (20) is formed during a current breaking operation, with the switching chamber (10) being filled with a switching medium (20) for arc quenching and for dielectrical insulation. The switching chamber (10) further comprises an exhaust volume (40, 62) fluidically connected to the arcing region (22) to allow the switching medium heated by the arc (20) to flow out of the arcing region (22) to the exhaust volume (40, 62), thereby transferring heat to a surface area of a metal component of the switching chamber (10). The device is characterized in that at least a portion of a surface contained in the switching chamber (10) is covered with a porous layer (72).
IPC 8 full level
H01H 9/30 (2006.01); H01H 9/52 (2006.01); H01H 33/22 (2006.01); H01H 33/58 (2006.01)
CPC (source: EP)
H01H 9/302 (2013.01); H01H 9/52 (2013.01); H01H 33/7015 (2013.01); H01H 33/22 (2013.01); H01H 33/58 (2013.01); H01H 2009/305 (2013.01); H01H 2009/526 (2013.01); H01H 2033/888 (2013.01)
Citation (search report)
See references of WO 2017032667A1
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
DOCDB simple family (publication)
WO 2017032667 A1 20170302; CN 108140501 A 20180608; CN 108140501 B 20191001; EP 3338289 A1 20180627
DOCDB simple family (application)
EP 2016069538 W 20160817; CN 201680061757 A 20160817; EP 16753384 A 20160817