H - Electricity – 02 – H
Patent
H - Electricity
02
H
334/6
H02H 7/16 (2006.01)
Patent
CA 1110723
ABSTRACT OF THE DISCLOSURE A circuit interrupter is provided for an electrical capacitor, wherein an increase in internal pressure causes bulging of the capacitor cover, which is used to break internal electrical connections. Each of a pair of spaced terminals mounted on the cover has an electrical stud projecting through an aperture in an insulating bridge member positioned under the cover and spanning a pair of indentations in the cover. Connection tabs from a capacitor section project upwardly and are welded to the terminal studs at the underside of the bridge member in such a manner that the tabs can not pass through the apertures. When the cover bulges upward because of an internal pressure increase, the terminals move upward and become spaced from and slightly rotated with respect to the capacitor section. Also, the connections of the tabs to the terminal studs cause the bulging cover to flex the bridge member upward. The stresses in the weld connections are greatly increased because of both the upward movement of the terminals and the rotation of the terminals. At a predetermined increase in pressure the combined tension and rotation stresses in the welds cause both welds to rupture, and the bridge member springs back into essentially a level position. At this level position the tabs and the studs are kept well separated to prevent remake of the circuit or striking of an arc at a broken connection.
299983
Company General Electric
Eckersley Raymond A.
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