Sealed relay device

Details Sealed relay device Sealed relay device

H - Electricity

01

H

H01H 1/66 (2006.01) H01H 3/00 (2006.01) H01H 9/30 (2006.01) H01H 9/44 (2006.01) H01H 33/00 (2006.01) H01H 51/00 (2006.01) H01H 51/22 (2006.01) H01H 33/59 (2006.01) H01H 50/02 (2006.01)

Patent

CA 2184829

A sealed relay (1) of the high-vacuum type, or which may be backfilled with a dielectric gas such as hydrogen-nitrogen mixture for improved arc suppression when switching high-voltage DC currents. The relay (1) uses controlled fixed contacts (22) which enable use of a reduced diameter disk-shaped movable contact (21), thus permitting optimal placement of external arc-supporting permanent magnets (30) on a ceramic relay housing (3) in close proximity to the enclosed fixed and movable contacts (21, 22). A staggered or offset position of the fixed contacts (22) makes the relay polarity insensitive for bidirectional switching of high-voltage DC currents.

Relais étanche (1) du type à vide poussé, ou pouvant être rempli d'un gaz diélectrique tel qu'un mélange hydrogène/azote afin d'améliorer les aptitudes d'extinction d'arc lors de la commutation de courants continus haute tension. Ce relais (1) fait intervenir des contacts fixes commandés (22) qui permettent d'utiliser un contact mobile en forme de disque de diamètre réduit (21), assurant ainsi le positionnement optimal d'aimants permanents de support d'arc externes (30), sur un boîtier de relais en céramique (3), en étroite proximité avec les contacts fixes et mobiles enfermés (21, 22). Le positionnement décalé ou échelonné des contacts fixes (22) permet au relais de fonctionner indépendamment de la polarité, ce qui assure la commutation bidirectionnelle de courants continus haute tension.

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