Rotating arc electrical switch

Details Rotating arc electrical switch Rotating arc electrical switch

1990-05-24

1991-03-26

Macon, Robert S.

Electricity: circuit makers and breakers

Liquid contact

Time delay

200148B, H01H 3318

Patent

active

050031384

ABSTRACT:
A medium-voltage electrical switch comprises contacts actuated by a connecting rod and crank system. Parallel to the main contacts there is arranged an arcing circuit comprising a cylindrical electrode disposed inside a coil and whose internal surface cooperates with a movable arcing contact. The mechanical link connecting the main contact to the arcing contact comprises a crank and connecting rod system comprising a flexible part formed by an aperture and a spring providing the contact pressure of the arcing contacts. In the open position of the switch, the connecting rod extends perpendicular to the crank and the flexible part is neutralized so as to hold the movable arcing contact without clearance in the open position despite the electrodynamic forces acting on it.

REFERENCES:
patent: 3763340 (1973-10-01), Noack
patent: 4488023 (1984-12-01), Matsumoto et al.
patent: 4743719 (1988-05-01), Spooner

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