Electricity: circuit makers and breakers – Liquid contact – Time delay
Patent
1975-02-10
1976-07-20
Macon, Robert S.
Electricity: circuit makers and breakers
Liquid contact
Time delay
200145, H01H 3366
Patent
active
039708098
ABSTRACT:
This electric circuit breaker comprises a plurality of vacuum-type circuit interrupters electrically connected in parallel with each other and means for opening the interrupters substantially simultaneously during circuit interruption. Each interrupter comprises an evacuated envelope and a pair of relatively-movable contacts located within said envelope that are separable to provide an inter-contact gap across which arcing usually occurs during circuit interruption. The envelope comprises a tubular metal wall portion surrounding the inter-contact gap and a radially-extending opening within this tubular metal wall portion. The metal wall portions of the two interrupters are located in closely adjacent side-by-side relationship, and a short metal tube provides a passage between said openings for conveying arcing products from any inter-contact gap that is then arcing to any that is not then arcing, thereby promoting concurrent arcing at said gaps during high current interruptions.
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Freedman William
General Electric Company
Haubner J. Wesley
Macon Robert S.
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