Puffer type gas circuit breaker

Details Puffer type gas circuit breaker Puffer type gas circuit breaker

1996-01-31

1998-09-29

Gellner, Michael L.

High-voltage switches with arc preventing or extinguishing devic

Arc preventing or extinguishing devices

Air-current blowout

218 78, H01H 3388

Patent

active

058147810

ABSTRACT:
A puffer type gas-blast circuit breaker includes a guide section arranged at a coupler section between a shaft section of a puffer cylinder and a dielectric operating rod, for guiding both in the axis direction of a current interruption section and in the radial direction thereof, thereby to suppress or eliminate the occurrence of misalignment of center axis between movable components and fixed ones thus causing a gap to remain constant between a dielectric nozzle and a fixed arc contact. With such an arrangement, the gap between the nozzle and the contact can be kept uniform even when the pole-to-pole distance is increased with an increase in the high withstanding voltage of the breaker. This ensures that the surface-creeping electric field on the inner surface of the dielectric nozzle can be at a desired design value, thus enabling to provide a stable pole-to-pole insulation characteristic during current interruption operations.

REFERENCES:
patent: 4211904 (1980-07-01), Karrenbauer
patent: 4412115 (1983-10-01), Okuno
patent: 4459447 (1984-07-01), Arimoto

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