Vacuum circuit interrupter with disc-shaped beryllium contacts

Details Vacuum circuit interrupter with disc-shaped beryllium contacts Vacuum circuit interrupter with disc-shaped beryllium contacts

H - Electricity

01

H

306/216

H01H 33/66 (2006.01) H01H 1/02 (2006.01)

Patent

CA 1084094

ABSTRACT OF THE DISCLOSURE This vacuum-type circuit interrupter in a high current interrupter rated for interrupting currents of 35,000 amperes r.m.s. or higher. Despite this high current interrupting requirement, each of its disc-shaped contacts can be made from an exceptionally small and thin blank because these contacts are of beryllium and each has a flat surface, without the usual central recess, extending from its center to a perimeter located radially between the outer periphery of the contact and the outer periphery of the inner and of the associated contact rod. On this flat surface of beryllium, contact-engagement occurs and arcs are initiated during interruption. Each contact rod is joined to its associated beryllium contact by means of brazed joint, a portion of which is accommodated in a very shallow recess on the back surface of the contact.

273775

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