| 摘要 |
In a gas-blast switch with a compression device (14) with a compression piston (9) and a compression cylinder (8), at least one of which can be moved by the drive (7) during the cut-off process, starting from a cut-in position (16), reducing a compression space (12) delimited by them, the initial quenching gas pressure is increased in that the compression piston (9) is moved toward the compression cylinder (8) in advance. In order to take advantage of the magnetic effect of the break current, an armature (20) which can be moved by the magnetic field of a stator (26) which can be excited by the break current is provided, producing a pressure influence causing the advance movement of the compression piston (8) via a compression chamber (30).
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