Transformer hydrogen indicator
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United States of America Patent
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Apr 7, 2015
Grant Date -
Nov 6, 2014
app pub date -
Apr 16, 2014
filing date -
May 3, 2013
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A reliable, low cost device for determining when dangerous levels of hydrogen gas have been generated in a transformer is disclosed. The hydrogen indicator is defined by a module assembly that threads into either the headspace or into the oil-filled body of a transformer. The module has an open interior that contains a film that incorporates a hydrogen-sensitive chemochromic indicator. The indicator film is visible through a lens. When the film has been exposed to hydrogen, chemical changes in the chemochromic indicator cause the film to change color—the color change is immediately visible through the lens.
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