Electric-wire protection device
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United States of America Patent
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Apr 17, 2018
Grant Date -
Nov 26, 2015
app pub date -
May 8, 2015
filing date -
May 22, 2014
priority date (Note) -
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status (Latency Note)
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Abstract
An electric-wire protection device protects at least one electric wire among an electric-wire bundle that bundles a plurality of electric wires that are used to supply power to a plurality of loads from a power source Ba. Calculation circuit calculates an increased temperature of the electric wire from an initial temperature at the time that the estimate begins, based on a load current Is that has been detected and a thermal characteristic of the electric wire, and estimates the temperature of the electric wire by adding the increased temperature to the initial temperature. Current flow information supply portion supplies to the calculation circuit current flow information related to current flow to a load other than a subject load. Calculation circuit corrects the initial temperature by a correction value that corresponds to the current flow information that exists at the time the estimate begins.
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