EP 1428303 A2 20040616 - DETECTION OF ARCING IN DC ELECTRICAL SYSTEMS
Title (en)
DETECTION OF ARCING IN DC ELECTRICAL SYSTEMS
Title (de)
ERKENNUNG DER BOGENBILDUNG IN ELEKTRISCHEN GLEICHSTROMSYSTEMEN
Title (fr)
DETECTION DE PRODUCTION D'ARC ELECTRIQUE DANS DES SYSTEMES ELECTRIQUES C.C.
Publication
Application
Priority
- US 0146929 W 20011109
- US 24816200 P 20001113
Abstract (en)
[origin: WO0239561A2] Arcing faults in dc electric power systems are detected by apparatus which responds to a predetermined drop either in voltage across, or current drawn by, a dc load. The voltage and current drops can be measured values or scaled to the source voltage. In another arrangement, the load current is interrupted momentarily when a step decrease in current is detected. If the dc current does not return, within a predetermined margin, to the decreased value before interruption, arcing is indicated. In a third embodiment, drift of the load current following detection of a step decrease, either upward toward a short or downward toward an open circuit, is taken as an indication of arcing.
IPC 1-7
IPC 8 full level
H02H 3/10 (2006.01); H02H 1/00 (2006.01); H02H 3/28 (2006.01); H02H 3/32 (2006.01); H02H 3/44 (2006.01)
CPC (source: EP KR)
H02H 1/0015 (2013.01 - EP); H02H 3/50 (2013.01 - KR); H02H 3/445 (2013.01 - EP)
Citation (search report)
See references of WO 0239561A2
Designated contracting state (EPC)
AT BE CH CY DE ES FR GB IT LI
DOCDB simple family (publication)
WO 0239561 A2 20020516; WO 0239561 A3 20040401; AU 3064902 A 20020521; CA 2426901 A1 20020516; CN 1529929 A 20040915; EP 1428303 A2 20040616; JP 2005503743 A 20050203; JP 3864381 B2 20061227; KR 20040028684 A 20040403; MX PA03004171 A 20030922
DOCDB simple family (application)
US 0146929 W 20011109; AU 3064902 A 20011109; CA 2426901 A 20011109; CN 01818720 A 20011109; EP 01990886 A 20011109; JP 2002541770 A 20011109; KR 20037006498 A 20030513; MX PA03004171 A 20011109