EP 1644951 A2 20060412 - METHOD AND DEVICE FOR LIMITING THE CURRENT IN A LIQUID METAL CURRENT LIMITER
Title (en)
METHOD AND DEVICE FOR LIMITING THE CURRENT IN A LIQUID METAL CURRENT LIMITER
Title (de)
VERFAHREN UND VORRICHTUNG ZUR STROMBEGRENZUNG MIT EINEM FLÜSSIGMETALL-STROMBEGRENZER
Title (fr)
PROCEDE ET DISPOSITIF PERMETTANT DE LIMITER LE COURANT AU MOYEN D'UN LIMITEUR DE COURANT A METAL LIQUIDE
Publication
Application
Priority
- CH 2004000416 W 20040701
- EP 03405518 A 20030710
- EP 04738057 A 20040701
Abstract (en)
[origin: WO2005006375A2] The invention relates to a current limiting method, a current limiting device (1), and a switchgear comprising such a device (1). According to the invention, liquid metal (3) is directed along a resistor element (5) for the current limiting path (31) so as to obtain arc-free current limitation for mains-related fault currents (i(t)). Examples of embodiments include, among other things: an electrical resistance (Rx) that increases in a non-linear manner in the direction of movement (x) of the liquid metal (3) for a smooth current limiting characteristic; a resistor element (5) in the form of a dielectric matrix (5) comprising channels (3a) for the liquid metal (3), and a combined current limiter-circuit breaker (1). Advantages include, among other things: arc-free, reversible current limitation and optional power shutdown; suitable also for high voltages and currents; fast reaction times; reduced wear; and maintenance-friendly.
IPC 1-7
IPC 8 full level
H01H 77/10 (2006.01); H01H 29/00 (2006.01); H01H 29/22 (2006.01); H01H 53/08 (2006.01)
CPC (source: EP KR US)
H01H 29/00 (2013.01 - KR); H01H 29/28 (2013.01 - KR); H01H 33/04 (2013.01 - KR); H01H 77/10 (2013.01 - EP US); H01H 29/00 (2013.01 - EP US); H01H 29/22 (2013.01 - EP US); H01H 53/08 (2013.01 - EP US)
Citation (search report)
See references of WO 2005006375A2
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 2005006375 A2 20050120; WO 2005006375 A3 20050922; AT E373870 T1 20071015; CN 100442423 C 20081210; CN 1820341 A 20060816; DE 502004005029 D1 20071031; EP 1644951 A2 20060412; EP 1644951 B1 20070919; KR 20060036446 A 20060428; PL 1644951 T3 20080229; US 2006171089 A1 20060803; US 7139158 B2 20061121
DOCDB simple family (application)
CH 2004000416 W 20040701; AT 04738057 T 20040701; CN 200480019691 A 20040701; DE 502004005029 T 20040701; EP 04738057 A 20040701; KR 20067000556 A 20060109; PL 04738057 T 20040701; US 32818106 A 20060110