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1. (WO1979000105) PROTECTIVE CIRCUIT-BREAKER OPERATED BY LEAKAGE CURRENT
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/1979/000105 International Application No.: PCT/EP1978/000012
Publication Date: 08.03.1979 International Filing Date: 18.08.1978
IPC:
H01H 83/14 (2006.01)
H ELECTRICITY
01
BASIC ELECTRIC ELEMENTS
H
ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
83
Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current
14
operated by unbalance of two or more currents or voltages, e.g. for differential protection
Applicants:
Inventors:
Priority Data:
7801222.08.1977LU
Title (EN) PROTECTIVE CIRCUIT-BREAKER OPERATED BY LEAKAGE CURRENT
(FR) DISJONCTEUR DE PROTECTION A DECLENCHEMENT PAR COURANT DE FUITE
Abstract:
(EN) The lead (8) of a working current is associated to a core (3) of which the magnetic induction flux causes, in case of leakage of current, the operation of a circuit-breaker. In this case, an armature (4) of the breaker drops because of the interference of a permanent magnetic field (11) with a field of the magnetic circuit of the breaker produced by the leakage current. The core (3) is wound with several coils around the lead (8) of the working current; this core is also a part of the magnetic circuit (1) of the breaker.
(FR) Le conducteur (8) du courant de service est associe a un noyau (3) dont le flux d"induction magnetique provoque, en cas de fuite de courant, la mise en action d"un declencheur. En ce cas, une armature (4) du declencheur tombe en raison de l"interference d"un champ magnetique permanent (11) avec un champ du circuit magnetique du declencheur produit par le courant de fuite. Le noyau (3) est enroule en plusieurs spires autour du conducteur (8) du courant de service; il forme en outre une partie du circuit magnetique (1) du declencheur.
Designated States:
Publication Language: German (DE)
Filing Language: German (DE)