| 摘要 |
Circuit breaker comprising at least one cutoff chamber, for each phase, filled with a gas with good dielectric properties, a fixed assembly particularly comprising a main contact and an arc contact, and a moving subassembly driven by an operating rod, and particularly comprising a main contact, an arc contact, a blowing cylinder and a blowing piston, characterised in that it comprises means (20; 22) using the electrodynamic forces of the short-circuit current to exert a force on the moving subassembly tending to assist the opening operation. <IMAGE>
|
