Electricity: circuit makers and breakers – Liquid contact – Time delay
Patent
1992-11-17
1994-09-27
Pellinen, A. D.
Electricity: circuit makers and breakers
Liquid contact
Time delay
200145, H01H 3342, H01H 3352
Patent
active
053508920
ABSTRACT:
A multipole circuit-breaker for each pole has an insulating feedthrough including a cylindrical first portion containing a vacuum bottle. The vacuum bottle comprises an insulating case closed by first and second endplates. The first metal endplate carries a first terminal outside the case and a fixed contact inside the case. The second endplate has a moving metal rod passing therethrough in sealed manner and carries a moving contact. The second endplate is electrically connected to the second cylindrical portion having a metal tube disposed coaxially therein. The metal tube is mechanically connected to the vacuum bottle and is electrically connected to the moving rod. The tube comprises a drive rod connected to the moving metal rod. The insulating feedthroughs of each of the pole are connected to a common metal bar disposed substantially at the junction between the first and the second portions of each feedthrough. The bar contains a control shaft common to the poles and connected to a drive mechanism. The drive rod of each pole is mechanically connected to the shaft. The tube comprises an endpiece fixed thereto and constituting a second terminal.
REFERENCES:
patent: 2492490 (1949-12-01), Lindae
patent: 3864534 (1975-02-01), Goodwin, Jr. et al.
patent: 3970809 (1976-07-01), Mitchell
patent: 4038585 (1977-07-01), Wolski et al.
patent: 4521657 (1985-06-01), Thuries
patent: 4568804 (1986-02-01), Luehring
patent: 4654494 (1987-03-01), Wuthrich
patent: 5128502 (1992-07-01), Hux
Friedhofer Michael A.
GEC Alsthom SA
Pellinen A. D.
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