H - Electricity – 01 – H
Patent
H - Electricity
01
H
H01H 71/00 (2006.01) H01H 33/70 (2006.01) H01H 71/10 (2006.01)
Patent
CA 2191590
The invention concerns a compressed-gas circuit breaker with two coaxially disposed contacts (1, 2) at least one of which can be driven to move in the longitudinal direction, the two contacts delimiting in the break state a switch path (3). The circuit breaker also has a nozzle (4), made of insulating material, which is connected to the driven contact (2) and which surrounds at least part of the switch path (3). The invention calls for a high-strength plastic tube (9) lying coaxially against the outside of the insulating nozzle (4) in order to prevent said nozzle (4) from expanding radially as a result of an increase in quencher-gas pressure.
Interrupteur de puissance à gaz sous pression, comprenant deux pièces de contact (1, 2) disposées coaxialement, dont au moins l'une peut être entraînée en direction axiale, ces deux pièces de contact délimitant, à l'état de coupure, un parcours de commutation (3), et au moins une buse en matière isolante (4) reliée à la pièce de contact mobile (2) et entourant au moins une partie du parcours de commutation (3), caractérisé en ce qu'il est prévu un tube de matière plastique haute résistance (9) s'appliquant sur la périphérie de la buse isolante (4), coaxialement à celle-ci, en vue d'empêcher une expansion radiale de ladite buse (4) consécutivement à un accroissement de la pression du gaz de soufflage.
Lehmann Volker
Marin Heiner
Aktiengesellschaft Siemens
Fetherstonhaugh & Co.
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