Leakage current protection device
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United States of America Patent
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Mar 23, 2010
Grant Date -
Sep 25, 2008
app pub date -
Mar 20, 2008
filing date -
Mar 21, 2007
priority date (Note) -
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Abstract
A leakage current protection device with a single laminated magnetic core transformer that is formed by punch pressing an amorphous metal material, or a nanocrystalline soft metal material, in a high punch velocity press to form the ring laminations for the magnetic core. In a ground fault circuit interrupter, the single laminated magnetic core transformer serves as the input sensor for both the current imbalance detection circuitry and the low impedance ground fault protection circuitry.
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