FIELD: measuring equipment.
SUBSTANCE: invention relates to measurement of absolute humidity of paper in coil insulation of high-voltage oil-filled equipment. A preset number of paper samples used as internal insulation of equipment is impregnated with transformer oil. Several capacitors are assembled next to each other, in each of which an insulation layer is made of one of paper samples. The assembly is calibrated, while it is immersed into transformer oil with the known humidity. The assembly is immersed into a tank with transformer oil of high-voltage oil-filled equipment. Electrical capacity of each assembly capacitor is measured. Humidity of a specific paper sample is determined by the measurement results and calibration data.
EFFECT: increase in the reliability and efficiency of determination of absolute actual humidity of paper insulation of oil-filled electrical devices.
12 cl, 7 dwg
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