Contact of vacuum interrupter and manufacturing process therefor

Details Contact of vacuum interrupter and manufacturing process therefor Contact of vacuum interrupter and manufacturing process therefor

1984-09-07

1985-11-19

Macon, Robert S.

Electricity: circuit makers and breakers

Liquid contact

Time delay

200262, 200265, 200266, H01H 3366

Patent

active

045544255

ABSTRACT:
A contact of a vacuum interrupter and a manufacturing process therefor are disclosed. The contact can greatly reduce the chopping current of the interrupter, can greatly increase the dielectric strength thereof and can improve the large- and small-current interrupting capabilities thereof. The contact is made of a material containing 29 to 74 weight % copper, 15 to 60 weight % chromium, 10 to 35 weight % iron, 0.5 to 15 weight % carbon and 0.5 to 15 weight % silicon. The process contains the steps of producing a porous matrix by sintering a mixture of all of the elements except copper under a nonoxidizing atmosphere, impregnating the matrix with copper and machining the resultant material.

REFERENCES:
patent: 3246979 (1966-04-01), Lafferty
patent: 3596927 (1927-07-01), Okutomi

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