Vacuum type switch gear device having L shaped stationary and movable conductors arrangement
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United States of America Patent
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Sep 14, 1999
Grant Date -
N/A
app pub date -
Jun 25, 1998
filing date -
Jun 27, 1997
priority date (Note) -
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Abstract
In a vacuum type switch gear device an L shaped stationary and movable conductors arrangement, a transitive portion from one spiral arc groove to a neighboring another spiral arc groove on the surface of a movable electrode defined by the terminating end portion of the one spiral groove, the starting end of the adjacent neighboring other spiral groove and the outer circumferential edge portion of the movable electrode is arranged in a substantially overlapping relationship in a vertical direction with the movable conductor. Thus an adverse effect of a current loop flowing through the movable conductor against an arc generated between movable and stationary electrodes is limited to thereby improve the circuit breaking performance.
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