top of page
MOISTURE DETECTION MEASUREMENT (DFR)
The moisture detection measurement (DFR – Dielectric Frequency Response) is an advanced diagnostic to determine the moisture present in both insulating materials and in the insulating fluid.
In DFR measurement, a voltage at variable frequencies (from fractions of a Hertz up to several thousand Hertz) is applied between the parts of the transformer to be analyzed.
The current response is then recorded for each frequency. The measurement provides a complete dielectric profile that shows how the insulating material responds to different frequencies.
DFR measurement is considered one of the most reliable methodologies for insulation analysis in transformers.
bottom of page