AC/DC current sensor for a circuit breaker
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United States of America Patent
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Mar 25, 1997
Grant Date -
N/A
app pub date -
May 30, 1995
filing date -
May 30, 1995
priority date (Note) -
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Abstract
A current sensor has a closed loop magnetic flux concentrating ferromagnetic core with a gap and a central aperture for receiving a conductor. A Hall generator is positioned in the gap and a secondary winding is positioned on a portion of the core. Current flow in the conductor creates magnetic flux in the core which energizes the secondary winding to provide a power output. Magnetic flux concentrated in the gap causes the Hall generator to output a sensing signal that is proportional to the magnetic flux which is proportional to the current flow in the conductor. The single core is used to simultaneously produce a sensing signal proportional to alternating or direct current flow in the conductor.
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