EP 2289137 A1 20110302 - METHOD AND ARRANGEMENT FOR GENERATING AN ERROR SIGNAL
Title (en)
METHOD AND ARRANGEMENT FOR GENERATING AN ERROR SIGNAL
Title (de)
ANORDNUNG UND VERFAHREN ZUM ERZEUGEN EINES FEHLERSIGNALS
Title (fr)
ENSEMBLE ET PROCÉDÉ POUR PRODUIRE UN SIGNAL D ERREUR
Publication
Application
Priority
EP 2008005212 W 20080618
Abstract (en)
[origin: WO2009152841A1] The invention relates to a method for generating an error signal (T) characterizing a ground fault on a conductor between to conductor ends, wherein a differential value is formed and the error signal is generated when the differential value meets a prescribed initiating condition. According to the invention, a first comparison value (VI1, VU1) is determined for a selectable location (xw) on the conductor (11) using at least one measured current and voltage value (Ia, Ua) taken at a prescribed measurement point in time at one end of the conductor (12), said comparison value indicating the current or the voltage that should flow or be present at the selectable location in an error-free state, and a second comparison value (VI2, VU2) is determined for the selectable location on the conductor using at least one measured current or voltage value (Ib, Ub) taken at the prescribed measurement point in time at the other end of the conductor (15), and the two comparison values are subjected to difference formation, forming the differential value (D).
IPC 8 full level
H02H 3/30 (2006.01)
CPC (source: EP US)
H02H 3/305 (2013.01 - EP US)
Citation (search report)
See references of WO 2009152841A1
Citation (examination)
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MT NL NO PL PT RO SE SI SK TR
Designated extension state (EPC)
AL BA MK RS
DOCDB simple family (publication)
WO 2009152841 A1 20091223; CN 102067403 A 20110518; CN 102067403 B 20140910; EP 2289137 A1 20110302; US 2011098951 A1 20110428
DOCDB simple family (application)
EP 2008005212 W 20080618; CN 200880129943 A 20080618; EP 08773689 A 20080618; US 200813000084 A 20080618