Method for interrupting a current-carrying path
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United States of America Patent
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Dec 9, 2003
Issued Date -
N/A
app pub date -
Sep 30, 1999
filing date -
Dec 22, 1998
priority date (Note) -
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status (Latency Note)
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Abstract
A method for interrupting current is provided wherein substantially all current is conveyed through a first current carrying path in a circuit interrupter. A movable element is displaced for interruption of the current, and current is directed through both the first current carrying path and a second current carrying path in parallel with the first path The second current carrying path includes at least one variable or controllable resistance element. Both current carrying paths conduct current during interruption, with resistance of the paths driving the current to a null level. Current through the first current carrying path may be terminated prior to current through the second path. The variable resistance element draws current into the second current carrying path once an arc in the first path reaches a resistance sufficient to transition a portion of the current to both paths.
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