On-load tap changer for dry transformers and dry transformer
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United States of America Patent
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Sep 19, 2017
Issued Date -
Feb 4, 2016
app pub date -
Jul 24, 2015
filing date -
Aug 1, 2014
priority date (Note) -
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status (Latency Note)
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Abstract
An on-load tap-changer for dry transformers, having an electric insulating hollow casing extending around a virtual axis, wherein several electric contact sections are foreseen along a path on the inner surface of the hollow casing, which are electrically joined through the wall of the hollow casing and a selector contact in the inner of the cylinder which is moveable along the path and that's outer end is selectively connectable with one of the contact sections by a respective movement. Respective cables are foreseen to electrically connect the contact sections from the radial outer side of the hollow casing, wherein at least some of the cables have a respective surrounding outer insulation at least at their respective connected end.
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