Self-blow-arcing high-voltage circuit breaker

Details Self-blow-arcing high-voltage circuit breaker Self-blow-arcing high-voltage circuit breaker

H - Electricity

01

H

H01H 33/60 (2006.01) H01H 33/90 (2006.01)

Patent

CA 2210371

Gas-insulated high-voltage blow-arcing circuit breaker comprising a fixed main terminal (3) and fixed arcing terminal (5-5A) and a mobile assembly comprising a main terminal (3), an arcing terminal (10), a compression space (V2) operating in conjunction with a fixed piston (19) and in relation with a blow space (V1) feeding a blow nozzle (14), the said compression space being fitted with a one-way valve (17) to prevent movement of the gas from the blow space to the compression space, with the following features: the piston has passages for exhausting gas from the compression space when the circuit is opened, the said passages being associated with means (22, 22') for keeping them closed between the beginning of the compression of the compression space (V1) and the closing of the one-way valve (17) and for opening them when the one-way valve (17) closes.

Disjoncteur à haute tension à isolation gazeuse à soufflage d'arc comprenant un contact principal fixe (3) et un contact d'arc fixe (5- 5A) et un ensemble mobile comprenant un contact principal (3), un contact d'arc (10), un volume de compression (V2) coopérant avec un piston fixe (19) et en liaison avec un volume de soufflage (V1) débouchant sur une buse de soufflage (14), ledit volume de compression étant muni d'un clapet (17) interdisant le passage du gaz du volume de soufflage vers le volume de compression, caractérisé en ce que le piston comprend des ouvertures permettant d'évacuer le gaz du volume de compression, lors d'une opération de déclenchement, lesdites ouvertures étant associées à des moyens (22, 22') permettant de les maintenir fermées entre le début de la compression du volume de compression (V1) et la fermeture du clapet (17) et de les ouvrir à la fermeture du clapet (17).

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