EP 2115759 A1 20091111 - PROTECTIVE DEVICE AND METHOD FOR ITS OPERATION
Title (en)
PROTECTIVE DEVICE AND METHOD FOR ITS OPERATION
Title (de)
SCHUTZEINRICHTUNG UND VERFAHREN ZU DEREN BETRIEB
Title (fr)
DISPOSITIF DE PROTECTION ET SON PROCÉDÉ DE FONCTIONNEMENT
Publication
Application
Priority
DE 2007000230 W 20070207
Abstract (en)
[origin: WO2008095454A1] The invention specifies a protective device (12) for combination with an electrical switching device (10) comprising a main current line (14) or for integration in such a switching device (10), with a switching element (18) and a switching apparatus (16), which is provided for the actuation of said switching element and is influenced by a current flow through the main current line (14), wherein, in order to influence the switching apparatus (16), a current transformer (26) is integrated in the main current line (14) and an electrical resistance of a secondary winding surrounded by the current transformer (26) can be measured, and a method for operating a protective device (12) according to the invention, wherein the switching apparatus (16) is triggered so as to actuate the switching element (18) if the measured resistance reaches or exceeds a predetermined or predeterminable threshold value.
IPC 8 full level
H01H 71/12 (2006.01)
CPC (source: EP KR US)
H01H 71/12 (2013.01 - KR); H01H 71/125 (2013.01 - EP US)
Citation (search report)
See references of WO 2008095454A1
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR
Designated extension state (EPC)
AL BA HR MK RS
DOCDB simple family (publication)
WO 2008095454 A1 20080814; CN 101601112 A 20091209; CN 101601112 B 20130904; DE 112007003443 A5 20100121; EP 2115759 A1 20091111; EP 2115759 B1 20131225; ES 2446091 T3 20140306; KR 101315935 B1 20131008; KR 20100014930 A 20100211; US 2010002350 A1 20100107; US 8243409 B2 20120814
DOCDB simple family (application)
DE 2007000230 W 20070207; CN 200780051072 A 20070207; DE 112007003443 T 20070207; EP 07721899 A 20070207; ES 07721899 T 20070207; KR 20097018655 A 20070207; US 44939907 A 20070207