| 摘要 |
<p>PURPOSE:To obtain a gas-blast circuit-breaker, in which the phase direction is reduced to simplify the structure, by supporting three phase circuit-breaker parts with an insulating barrier, and positioning plate-like intermediate plate parts of the insulating barrier at a phase-to-phase of each phase breaker part. CONSTITUTION:An operation unit 4 is arranged on one surface of a fitting plate 2, and a back surface part 1G of an insulating barrier 1 is fitted to the other surface of the fitting plate 2. Intermediate plate-like parts 1C, 1D standing from the back surface part 1G to the opposite side of the fitting plate 2 are formed at phase-to-phase parts of a breaker part of the insulating barrier 1 to shield the phase-to-phase of each phase breaker part with these plate-like parts 1C, 1D. With this structure, since the hot gas generated at the time of cutting current can be shielded by the intermediate plate-like parts 1C, 1D under the condition that three phase breaker parts are arranged on the same surface in parallel with each other by the insulating barrier 1, the three phase breaker parts can be arranged close to each other to reduce the phase direction.</p> |
