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1. (WO2017178735) SYSTEM FOR DETECTING AN OVERLOAD AND ELECTRICAL DIFFERENTIAL PROTECTION DEVICE FOR AN ELECTRICAL LINE

Pub. No.:    WO/2017/178735    International Application No.:    PCT/FR2017/050828
Publication Date: Fri Oct 20 01:59:59 CEST 2017 International Filing Date: Fri Apr 07 01:59:59 CEST 2017
IPC: H02H 3/08
H02H 3/33
H02H 3/347
H01H 85/048
Applicants: HAGER-ELECTRO SAS
Inventors: CHAMAGNE, Alexandre
KOENIG, Emmanuel
CHARLES, Benjamin
MARINHO, Georges
WERNER, Dominique
BLAESS, Gérard
FRITSCH, Pascal
Title: SYSTEM FOR DETECTING AN OVERLOAD AND ELECTRICAL DIFFERENTIAL PROTECTION DEVICE FOR AN ELECTRICAL LINE
Abstract:
The present invention relates to an overload detection system (10) on an electrical line (N, P) comprising at least one conductor, said system (10) comprising: a measurement torus (2), a current shunt branch (4) through which a shunt current can flow and which can be connected in parallel on the electrical line, an actuator (3) controlled in response to an increase in current passing through said electrical line (N, P) in order to connect, directly or indirectly, in the event of overload, the shunt branch (4) to the electrical line, characterised in that the shunt branch (4) and the electrical line form a shunt loop when the actuator is activated in the case of overload, and in that the measurement torus (2) is intended to directly or indirectly detect the shunt current of the shunt loop. The invention also relates to a electrical differential device (8) placed on an electrical line (N, P) and characterised in that it comprises such a detection system (10).