H - Electricity – 01 – H
Patent
H - Electricity
01
H
306/215
H01H 71/12 (2006.01) H01H 33/666 (2006.01) H01H 71/44 (2006.01)
Patent
CA 1111882
ABSTRACT OF THE DISCLOSURE An electric circuit breaker includes means for providing a predetermined delay between the initiation of a command pulse and the mechanical operation of an element of the circuit breaker in response to the command pulse. In on- embodiment, the predetermined delay is provided between a tripping command pulse and the mechanical operation of the trip mechanism of a vacuum circuit breaker. In this embodiment, a translatable armature is coupled to the trip mechanism through mechanical linkage including a flywheel rotatably mounted on a shaft. The shaft is mechanically coupled to the trip mechanism wherein rotation of the shaft operates the trip mechanism. The translatable armature is mechanically coupled to the flywheel so that movement thereof causes the flywheel to rotate through a predetermined rotation. The flywheel includes impact imposing means extending outwardly from a major face thereof. The shaft includes impact receiving means ex- tending radially therefrom. In operation of this embodi- ment, following the tripping command pulse, the flywheel rotates through the predetermined rotation with a re- sulting predetermined delay. At the completion of this rotation, the impact imposing means of the flywheel force- fully engages the impact receiving means of the shaft. This causes the shaft to operate the trip mechanism, causing the circuit breaker contacts to open. Means are provided for varying the predetermined delay. Other embodiments are disclosed.
330885
Company General Electric
Eckersley Raymond A.
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