Aggregate current transformer
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United States of America Patent
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Nov 19, 1996
Grant Date -
N/A
app pub date -
Jul 6, 1995
filing date -
Jul 6, 1994
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A sum current transformer that acts on a protective switch via an amplifier has a core of a solid metallic material composed of an alloy having more than 40% nickel, so that it can be implemented mechanically solid even given small dimensions. The temperature dependency of the arrangement caused by the ohmic resistance of the winding is compensated by the diminishing eddy currents in the core given increasing temperature, so that the smallest dimensions can be realized for the aggregate current transformer.
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