EP 1644952 A1 20060412 - METHOD AND DEVICE FOR CURRENT LIMITATION WITH AN AUTOMATIC CURRENT LIMITER
Title (en)
METHOD AND DEVICE FOR CURRENT LIMITATION WITH AN AUTOMATIC CURRENT LIMITER
Title (de)
VERFAHREN UND VORRICHTUNG ZUR STROMBEGRENZUNG MIT EINEM SELBSTBETÄTIGTEN STROMBEGRENZER
Title (fr)
PROCEDE ET DISPOSITIF PERMETTANT DE LIMITER LE COURANT AU MOYEN D'UN LIMITEUR DE COURANT A ACTIONNEMENT AUTOMATIQUE
Publication
Application
Priority
- CH 2004000417 W 20040701
- EP 03405519 A 20030710
- EP 04738058 A 20040701
Abstract (en)
[origin: WO2005006373A1] The invention relates to a method and a device (1) for combined current limitation and power breaking and to a switchgear having said device (1). In a combined current limiter/power braker (1) according to the invention, a movable electrode (3, 3') is guided automatically along a resistance element (5) for the current limiting path (31) by an overcurrent-dependent force (Fmag) for the purpose of current limitation and brought to an insulator (8) in a serial arrangement for power breaking purposes. Examples of embodiments are, inter alia, the utilization of Lorenz force for automatic current limitation; movable electrodes (3, 3') realized by means of liquid metal (3) or a movable solid conductor (3'); an electrical resistance (RX) increasing non-linearly in the direction of movement (x) for smooth power limitation characteristics and a resistance element (5) in the form of a dielectric matrix (5) with several channels (3a) for the liquid metal (3). Amongst the advantages achieved are electric arc-free, reversible current limitation and power breaking, which is also suitable for high voltages and currents, rapid reaction times, little wear and easy maintenance.
IPC 1-7
IPC 8 full level
H01H 77/10 (2006.01); H01H 29/00 (2006.01); H01H 53/08 (2006.01)
CPC (source: EP KR US)
H01H 29/04 (2013.01 - KR); H01H 53/08 (2013.01 - KR); H01H 77/10 (2013.01 - EP US); H01H 29/006 (2013.01 - EP US); H01H 53/08 (2013.01 - EP US)
Citation (search report)
See references of WO 2005006373A1
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 2005006373 A1 20050120; AT E373871 T1 20071015; CN 100446152 C 20081224; CN 1820340 A 20060816; DE 502004005030 D1 20071031; EP 1644952 A1 20060412; EP 1644952 B1 20070919; KR 20060036448 A 20060428; PL 1644952 T3 20080229; US 2007041138 A1 20070222
DOCDB simple family (application)
CH 2004000417 W 20040701; AT 04738058 T 20040701; CN 200480019689 A 20040701; DE 502004005030 T 20040701; EP 04738058 A 20040701; KR 20067000626 A 20060110; PL 04738058 T 20040701; US 56403704 A 20040701