Fault current limiter
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United States of America Patent
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Sep 27, 2011
Grant Date -
Nov 25, 2010
app pub date -
Apr 3, 2009
filing date -
Apr 3, 2008
priority date (Note) -
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Abstract
A fault current limiter (FCL) includes a series of high permeability posts (1) for collectively define a core for the FCL. A DC coil (2), for the purposes of saturating a portion of the high permeability posts (1), surrounds the complete structure outside of an enclosure in the form of a vessel (3). The vessel (3) contains a dielectric insulation medium (4). AC coils (5), for transporting AC current, are wound on insulating formers (6) and electrically interconnected to each other in a manner such that the senses of the magnetic field produced by each AC coil (5) in the corresponding high permeability core are opposing. There are insulation barriers (7) between phases to improve dielectric withstand properties of the dielectric medium.
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