EP 1388191 A1 20040211 - BYPASS CIRCUIT FOR THE OVERCURRENT TRIP OF A LOW-VOLTAGE POWER CIRCUIT BREAKER
Title (en)
BYPASS CIRCUIT FOR THE OVERCURRENT TRIP OF A LOW-VOLTAGE POWER CIRCUIT BREAKER
Title (de)
UMGEHUNGSSCHALTUNG FÜR DEN ÜBERSTROMAUSLÖSER EINES NIEDERSPANNUNGS-LEISTUNGSSCHALTERS
Title (fr)
CIRCUIT DE PONTAGE POUR LE DECLENCHEUR A SURINTENSITE D'UN DISJONCTEUR DE PUISSANCE A BASSE TENSION
Publication
Application
Priority
- DE 0201347 W 20020405
- DE 10125051 A 20010514
Abstract (en)
[origin: WO02093709A1] According to the invention, a bypass circuit (4) trips a power circuit breaker, independently of an existing electronic overcurrent trip (2), as instantaneously as possible when a short-circuit occurs. To achieve this, the bypass circuit (4) is supplied by its own current sensor (3) that is configured as a current transformer in order to charge a capacitor (C), until a threshold value circuit (5) responds. The charge of the capacitor (C) is then fed to a separate tripping magnet (F2) or to a combined tripping magnet (F3) comprising separate coils for the two tripping paths.
IPC 1-7
IPC 8 full level
H02H 3/08 (2006.01); H01H 83/02 (2006.01); H02H 3/05 (2006.01)
CPC (source: EP US)
Citation (search report)
See references of WO 02093709A1
Designated contracting state (EPC)
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR
DOCDB simple family (publication)
WO 02093709 A1 20021121; DE 10125051 A1 20021121; EP 1388191 A1 20040211; JP 2004531999 A 20041014; US 2004145844 A1 20040729
DOCDB simple family (application)
DE 0201347 W 20020405; DE 10125051 A 20010514; EP 02726078 A 20020405; JP 2002590472 A 20020405; US 47769903 A 20031114