High voltage circuit interrupting device operating mechanism inc

High-voltage switches with arc preventing or extinguishing devic – Arc preventing or extinguishing devices – Operating mechanism structure or arrangement

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Details

74 2, 200400, 335171, H01H 3342, H01H 920

Patent

active

055084877

ABSTRACT:
A circuit switching mechanism for use in a high voltage circuit breaker is disclosed. The disclosed mechanism comprises a charging system (12); trip latch mechanism (14); an opening spring (16); a closing spring (18) positioned coaxially with the opening spring; a support structure (22) supporting the open and closing springs; and a first rod member (24) operatively associated with a circuit interrupter, the first rod member being operatively coupled to the open and closing springs such that discharging of the opening spring effects the movement of the first rod member in a first direction and discharging of the closing spring effects the movement of the first rod member in a second direction. The trip latch mechanism (14) comprises a hammer; a trip link; a first pin through the hammer and trip link; a second pin attached to the trip link, the second pin positioned such that the hammer, upon a predetermined amount of rotation about the first pin, bears against the second pin; a trip finger; and a third pin through the trip link and trip finger, the trip finger bearing against the support structure to hold at least one of the springs in a charged state.

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