Furan Analysis (IEC 61198 Modified)
As the cellulose insulation breaks down, one of the by-products which dissolves in the oil are Furans. We look at the
five distinct furans 2-furfural (2FAL), 2-furfurylalcohol (2FOL), 2-acetyl furan (2ACF), 5-methyl-2-furfural (2MEF)
and 5-hydroxymethyl-2-furfural (2HMF). Together with Dissolved Gas Analysis this analysis gives a very good guide
to cellulose Insulation Degradation, which will tell us more detail on life expectancy of the transformer.