EP 1665487 A1 20060607 - METHOD FOR CONTROLLING AN ELECTRONIC OVERCURRENT TRIP FOR LOW-VOLTAGE CIRCUIT BREAKERS
Title (en)
METHOD FOR CONTROLLING AN ELECTRONIC OVERCURRENT TRIP FOR LOW-VOLTAGE CIRCUIT BREAKERS
Title (de)
VERFAHREN ZUR STEUERUNG EINES ELEKTRONISCHEN BERSTROMAUSLÖSERS FÜR NIEDERSPANNUNGS-LEISTUNGSSCHALTER
Title (fr)
PROCEDE POUR COMMANDER UN DISCONTACTEUR ELECTRONIQUE POUR DISJONCTEUR DE PUISSANCE BASSE TENSION
Publication
Application
Priority
- DE 2004001909 W 20040824
- DE 10343350 A 20030912
Abstract (en)
[origin: WO2005027292A1] The invention relates to a method for controlling an electronic overcurrent trip for low-voltage circuit breakers, according to which digitized signals for the electricity values are generated and evaluated, and a tripping device providing short-circuit protection is activated when an overcurrent event is assumed to take place based on the evaluation. According to the inventive method, signals whose electricity value does not lie between the electricity values of the previous signal and the subsequent signal, or whose electricity value does not correspond to the electricity values of the previous signal or the subsequent signal, are rated as potentially erroneous signals and are tested by means of additional criteria.
IPC 1-7
IPC 8 full level
G01R 31/327 (2006.01); H02H 1/00 (2006.01); H02H 3/08 (2006.01)
CPC (source: EP US)
G01R 31/3278 (2013.01 - EP US); H02H 1/0007 (2013.01 - EP US); H02H 3/08 (2013.01 - EP US)
Citation (search report)
See references of WO 2005027292A1
Designated contracting state (EPC)
DE FR GB IT
DOCDB simple family (publication)
WO 2005027292 A1 20050324; CN 1849734 A 20061018; DE 10343350 A1 20050421; EP 1665487 A1 20060607; US 2007086139 A1 20070419; US 7724488 B2 20100525
DOCDB simple family (application)
DE 2004001909 W 20040824; CN 200480026390 A 20040824; DE 10343350 A 20030912; EP 04786191 A 20040824; US 57156204 A 20040824