Mechanically operated gas blast circuit interrupter having gastight enclosures
AssigneeMerlin Gerin
InventorsCesar Castelli, Eugene Vincent
Life of this patent
Estimating the term…
Abstract
Gas-blast circuit interrupter of the puffer type comprising sealed compressed-gas filled arc-extinguishing chambers and support insulators. The enclosures of the chambers and of the support insulator thereof are traversed by control rods which operate the contacts and which are assembled in situ through a door managed in a junction housing which secures the enclosures together and accomodates the confronting end portions of the rods. The junction housing is gastight and may be filled with the same gas as the enclosures so as to avoid pressure differentials across the seals causing leakage of gas. A fluid communication is established between the enclosures after mounting thereof on the junction housing.
Claims7
A gastight gas-blast circuit interrupter of the puffer-type comprising:
- at least one arc-extinguishing chamber having a gastight separable contact means containing enclosure filled with an arc-extinguishing gas under a pressure above atmospheric pressure, a seal in the wall of said enclosure, and a movable contact-operating rod traversing said wall in a gastight manner through said seal;
- hollow insulating support means to support said chamber an appropriate distance from ground potential and having a gastight enclosure containing the same gas under a pressure above atmospheric pressure as the enclosure of said chamber, a seal in the wall of said enclosure of said support means, and a movable control rod traversing said wall of said enclosure of said support means in a gastight manner through the seal thereof,
- said contact-operating rod and said control rod having confronting end portions extending externally of said enclosures and adapted to be coupled together in motion-transmitting relation to permit operation of said contact-operating rod by actuation of said control rod;
- a gastight hollow junction housing joining said enclosures and accommodating said end portions,
- said seals being disposed in the partition wall portions common to said housing and to said enclosures, respectively, said housing having removable wall means permitting the coupling and uncoupling of said end portions therethrough from the outside of said housing, and means for filling said housing with said gas under a pressure above atmospheric pressure.
Dependencies are inferred from the claim text.