H - Electricity – 01 – H
Patent
H - Electricity
01
H
H01H 33/70 (2006.01) H01H 33/90 (2006.01)
Patent
CA 2334991
The invention concerns a circuit breaker comprising inside an interrupter chamber, a hollow arcing contact (3B) and an arcing contact in the form of a rod (5B) inserted in said hollow contact (3B) along an axial direction (A) when the circuit breaker is closed, and a blower tube (9) which is coaxial and integral with the hollow arcing (3B) and has a tube throat (9A) traversed by the rod-shaped arcing contact (5B), the hollow arcing contact (3B) and the blower tube (9) and the rod-shaped arcing contact (5B) being displaced along the axial direction (A) in opposite directions when the circuit breaker is opened. The invention is characterised in that the blower tube (9) is guided in translation along the rod-shaped arcing contact (5B) when the two arcing contacts (3B, 5B) move in opposite directions, thereby reducing the risk of contact or friction of the tube throat (9A) on the rod-shaped contact (5B), thus increasing the circuit breaker interrupting capacity.
The invention concerns a circuit breaker comprising inside an interrupter chamber, a hollow arcing contact (3B) and an arcing contact in the form of a rod (5B) inserted in said hollow contact (3B) along an axial direction (A) when the circuit breaker is closed, and a blower tube (9) which is coaxial and integral with the hollow arcing (3B) and has a tube throat (9A) traversed by the rod-shaped arcing contact (5B), the hollow arcing contact (3B) and the blower tube (9) and the rod-shaped arcing contact (5B) being displaced along the axial direction (A) in opposite directions when the circuit breaker is opened. The invention is characterised in that the blower tube (9) is guided in translation along the rod-shaped arcing contact {5B) when the two arcing contacts (3B, 5B) move in opposite directions, thereby reducing the risk of contact or friction of the tube throat {9A) on the rod-shaped contact (5B), thus increasing the circuit breaker interrupting capacity. Le disjoncteur comprend, à l'intérieur d'une chambre de coupure, un contact d'arc creux (3B) et un contact d'arc en forme de tige (5B) qui est inséré dans ledit contact creux (3B) suivant une direction axiale (A) lorsque le disjoncteur est fermé, et une buse de soufflage (9) qui est coaxiale et solidaire du contact d'arc creux (3B) et qui possède un col de buse (9A) traversé par le contact d'arc en forme de tige (5B), le contact d'arc creux (3B) et la buse de soufflage (9) d'une part, le contact d'arc en forme de tige (5B) d'autre part, étant déplacés suivant la direction axiale (A) en sens opposés lors de l'ouverture du disjoncteur. Selon l'invention, la buse de soufflage (9) est guidée en translation le long du contact d'arc en forme de tige (5B) lors du déplacement en sens opposés des deux contacts d'arc (3B, 5B), ce qui permet de réduire le risque d'un contact ou d'un frottement du.col de la buse (9A) sur le contact d'arc en forme de tige (5B). Il en résulte une augmentation de la capacité de coupure du disjoncteur.
Alstom Holdings
Perret Michel
Robic
LandOfFree
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