EP 1644949 A1 20060412 - METHOD AND DEVICE FOR POWER BRAKING WITH A FLUID-OPERATED LIQUID METAL CURRENT SWITCH
Title (en)
METHOD AND DEVICE FOR POWER BRAKING WITH A FLUID-OPERATED LIQUID METAL CURRENT SWITCH
Title (de)
VERFAHREN UND VORRICHTUNG ZUR STROMSCHALTUNG MIT EINEM FLUIDBETRIEBENEN FLÜSSIGMETALL-STROMSCHALTER
Title (fr)
PROCEDE ET DISPOSITIF PERMETTANT DE COUPER LE COURANT AU MOYEN D'UN INTERRUPTEUR DE COURANT A METAL LIQUIDE ACTIONNE PAR UN FLUIDE
Publication
Application
Priority
- CH 2004000418 W 20040701
- EP 03405520 A 20030710
- EP 03405521 A 20030710
- EP 04738059 A 20040701
Abstract (en)
[origin: WO2005006368A1] The invention relates to a method and a device (1) for current limitation and/or power braking and to a switchgear having said device (1). According to the invention, a liquid metal (3) is moved by a dielectric fluid drive mechanism (12) with a control device (11) between a first current path for a nominal current (I1), a second current path (31) for current limitation (12) and optionally a third current path (32) for power braking (i=0), wherein the working fluid (9) exerts a mechanical influence directly upon a surface (3b) of the liquid metal (3) with a predetermined drive pressure (p1, p2). Examples of embodiments are, inter alia, an insulating gas (9) or insulating fluid (9) as drive fluid (9); a pressure drive (12) with pressure vessels (121-124) and valves (10) or a piezo drive mechanism (12) for the working fluid (9); and design criteria for liquid metal array (3a, 4), drive pressure (p1, p2) and piezo drive mechanism (12). Amongst the advantages are reversible current limitation and power braking, which is also suitable for high currents and voltages, rapid reaction times, little wear and easy maintenance.
IPC 1-7
IPC 8 full level
H01H 29/28 (2006.01); H01H 33/16 (2006.01); H01H 71/12 (2006.01)
CPC (source: EP KR US)
H01H 29/00 (2013.01 - KR); H01H 29/28 (2013.01 - EP KR US); H01H 33/162 (2013.01 - EP US); H01H 71/127 (2013.01 - EP US)
Citation (search report)
See references of WO 2005006368A1
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PL PT RO SE SI SK TR
DOCDB simple family (publication)
WO 2005006368 A1 20050120; EP 1644949 A1 20060412; KR 20060036445 A 20060428; US 2006146466 A1 20060706; US 7151331 B2 20061219
DOCDB simple family (application)
CH 2004000418 W 20040701; EP 04738059 A 20040701; KR 20067000553 A 20060109; US 32816006 A 20060110