High voltage power circuit breaker with an insulation nozzle

Details High voltage power circuit breaker with an insulation nozzle High voltage power circuit breaker with an insulation nozzle

H - Electricity

01

H

H01H 33/91 (2006.01) H01H 33/24 (2006.01) H01H 33/98 (2006.01) H01H 33/70 (2006.01)

Patent

CA 2321714

The invention relates to a high voltage power circuit breaker with two arcing contacts (1, 2) situated coaxially opposite each other and an insulation nozzle which is dammed by the first arcing contact (1) when switched on. The first arcing contact (1) has a shaft (8) with an enlarged diameter and an end piece (7) with a reduced diameter. Said shaft (8) dams a through channel (6) of the insulation body (3). The through channel (6) is cylindrical in form over a shorter length than the length of the end piece (7). The stream of arc extinguishing gas is therefore introduced when the end piece (7) is drawn back into the through channel (6).

L'invention concerne un sectionneur de puissance haute tension comportant deux contacts d'arc (1, 2) situés coaxialement l'un en regard de l'autre, et une buse isolante qui est protégée par le premier contact d'arc (1) à l'état actionné. Ce premier contact d'arc (1) possède une tige (8) de diamètre agrandi et une pièce terminale (7) de diamètre réduit. Ladite tige (8) protège un canal débouchant (6) du corps d'isolation (3). Ce canal débouchant (6) est de forme cylindrique sur une longueur plus courte que la longueur de la pièce terminale (7). Le flux de gaz d'extinction d'arc est donc introduit lorsque la pièce terminale (7) est rétractée à l'intérieur du canal débouchant (6).

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