Switchgear light arc quenching appts. - has additional electrode parallel to contact point with each electrode assembly consisting of two electrodes

The quenching device is intended for low voltage a.c. contactors of high rated current. It has at least one contact point with a parallel auxiliary electrode system and an associated semi-conductor device. The latter disconnects the current flowing across the auxiliary electrode system during zero p...

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Bibliographic Details
Main Author THOMAS KOLPIN
Format Patent
LanguageEnglish
French
Published 21.08.1981
Subjects
BASIC ELECTRIC ELEMENTS
ELECTRIC SWITCHES
ELECTRICITY
EMERGENCY PROTECTIVE DEVICES
RELAYS
SELECTORS
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Summary:The quenching device is intended for low voltage a.c. contactors of high rated current. It has at least one contact point with a parallel auxiliary electrode system and an associated semi-conductor device. The latter disconnects the current flowing across the auxiliary electrode system during zero passage. Parallel to the contact point is additionally provided a further auxiliary electrode system, both these systems consisting of two auxiliary electrodes each. The light arc is driven to one or the other auxiliary electrode system by a magnetic direct field according to the polarity. The semiconductor rectifier is connected in series with the auxiliary electrodes of each system. Preferably auxiliary electrodes for identical load current polarity are interconnected by rectifiers operated in forward direction for this polarity. L'INVENTION CONCERNE UN DISPOSITIF POUR ETEINDRE L'ARC D'APPAREILS ELECTRIQUES DE COMMUTATION.DANS CE DISPOSITIF COMPORTANT UN PREMIER DISPOSITIF D'ELECTRODES SECONDAIRES 10, 11, MONTE EN PARALLELE AVEC UN POINT DE CONTACT FORME DE DEUX CONTACTS 2, 3, IL EST PREVU EN PARALLELE AVEC LE POINT DE CONTACT UN AUTRE DISPOSITIF D'ELECTRODES SECONDAIRES 10A, 20 ET IL EST PREVU DES MOYENS PRODUISANT UN CHAMP MAGNETIQUE CONTINU 9 ATTIRANT L'ARC ELECTRIQUE 8 SE FORMANT AU POINT DE CONTACT, ENTRE LES ELECTRODES 10, 11; 10A, 20 ET, EN SERIE AVEC CHAQUE DISPOSITIF D'ELECTRODES SECONDAIRES, UN DISPOSITIF A SEMI-CONDUCTEURS 16, 21 SERVANT DE REDRESSEUR.APPLICATION NOTAMMENT AUX DISJONCTEURS DE PUISSANCE.
Bibliography:Application Number: FR19810002986