Polyphase interrupter responsive to single phase fault
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United States of America Patent
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-
Feb 21, 1989
Grant Date -
N/A
app pub date -
May 16, 1988
filing date -
May 16, 1988
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A polyphase interrupter includes an electric fuse in series with each phase, a phase grounding conductor electrically connected with each phase and movably mounted adjacent and electrically connected with a terminal of each fuse, biasing means arranged to impart individual grounding movement to each phase grounding conductor, latch means normally in engagement with each phase grounding conductor for preventing grounding movement thereof, actuating means associated with each of said fuses and movable into releasing engagement with the associated latch means in response to current interrupting operation of the associated fuse, and coupling means interconnecting all of said latch means for imparting simultaneous releasing movement thereby to effect grounding and interruption of all phases in response to interruption in one phase.
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