High voltage sulfur hexafluoride circuit-breaker capable of operating at low outside temperatures
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United States of America Patent
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Apr 19, 1988
Grant Date -
N/A
app pub date -
Feb 5, 1987
filing date -
Feb 5, 1986
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A high voltage sulfur hexafluoride circuit-breaker capable of operating at low outside temperatures and comprising at least one current-interrupting chamber comprising a sealed insulating enclosure containing a fixed contact inside a blast nozzle and a set of moving contacts associated with an operating member, the circuit-breaker including the improvement of means for maintaining a quantity of liquefied gas in the vicinity of the contact separation zone while the circuit-breaker is in the closed position.
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