发明名称 |
Puffer type gas circuit breaker |
摘要 |
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.
|
申请公布号 |
US5814781(A) |
申请公布日期 |
1998.09.29 |
申请号 |
US19960594491 |
申请日期 |
1996.01.31 |
申请人 |
HITACHI, LTD. |
发明人 |
KOYANAGI, OSAMU;KASHIMURA, KASTUICHI;ASAI, YOSHIHITO;KUROSAWA, YUKIO;DAIMON, GORO;TSUCHIYA, KENJI;MIZUFUNE, EISAKU;ISHIKAWA, KOGI |
分类号 |
H01H33/91;H01H33/42;H01H33/90;(IPC1-7):H01H33/88 |
主分类号 |
H01H33/91 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|