| 摘要 |
<p>The circuit breaker includes an envelope (1) which is filled with dielectric gas and contains two contacts (3A,7A). The moving contact (7A) is fixed to the end of a tube (7), surrounded by a second coaxial tube (8) and connected to it by a crown (9). There is an expansion chamber (17), closed off by a blower bus (10) and a compression chamber (18) linking with the blower chamber and closed off by a fixed piston (11). A supplementary chamber slides on a third tube (4) between the others to which is fixed the piston. The supplementary chamber is divided into two by a sliding heavy piece (19), pushed against the annular end piece (8C) by a spring (20) whose force is less than that created by the gas pressure on arcing.</p> |
