| 摘要 |
High-density sulphur hexafluoride circuit breaker. Sulphur hexafluoride circuit breaker comprising, in a leaktight enclosure, a fixed assembly including a fixed contact 6 inside an insulating nozzle 5, and a moving assembly comprising a moving contact 12 associated with operating means, characterised in that it comprises a fixed chamber 8 of constant volume constituting an overpressure chamber filled with liquid SF6, the overpressure being created by the energy of the arc when opening the circuit breaker on a short-circuit current and provoking a blasting of the arc through the insulating nozzle 5. <IMAGE>
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