Contact arrangement for vacuum switches with axial magnetic fiel

Details Contact arrangement for vacuum switches with axial magnetic fiel Contact arrangement for vacuum switches with axial magnetic fiel

1987-03-23

1987-09-22

Macon, Robert S.

Electricity: circuit makers and breakers

Liquid contact

Time delay

H01H 3366

Patent

active

046956875

ABSTRACT:
Contact pieces for vacuum switches with axial magnetic field are designed, for example, as pot type contacts with codirectional slotting which contain in each instance a disk-shaped contact body of contact material and have an arrangement for the suppression of eddy currents. Conventional techniques for this purpose typically involves the cutting of radial slots in the contact bodies. In accordance with the invention, each contact piece (10, 110, 210) comprises a plurality of discrete elements (11, 111, 211) which are so arranged on the concrete carrier (2) that their edges (12, 13; 112, 113; 212, 213) form joints (25, 125, 225) and thereby define conductivity jumps for the suppression of the eddy currents. Specifically the discrete segments (111, 211) are produced by reshaping a cylindrical blank (100) of circular cross section into a semi-finished product of circular sectorial cross section.

REFERENCES:
patent: 4246458 (1981-01-01), Yanabu
patent: 4430536 (1984-02-01), Kurosawa et al.
patent: 4532391 (1985-07-01), Bernt
patent: 4588879 (1986-05-01), Noda et al.

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