High-voltage switches with arc preventing or extinguishing devic – Arc preventing or extinguishing devices – Air-current blowout
Patent
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
Asai Yoshihito
Daimon Goro
Ishikawa Kogi
Kashimura Kastuichi
Koyanagi Osamu
Friedhofer Michael A.
Gellner Michael L.
Hitachi , Ltd.
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