Classification under subheading 850431 as a transformer is excluded, as although the construction of the article is that of a transformer, it cannot transform an alternating current into a different alternating current.
Kuigi toote ehitus on sama nagu trafol, ei või toodet klassifitseerida alamrubriiki 850431, kuna see ei muunda vahelduvvoolu teistsuguseks vahelduvvooluks.