PT - JOURNAL ARTICLE AU - Gutten, Miroslav AU - Kudelcik, Jozef TI - Methods of Humidityanalysis in Transformer Oil DP - 2010 Jun 30 TA - Communications - Scientific Letters of the University of Zilina PG - 49--52 VI - 12 IP - 2 AID - 10.26552/com.C.2010.2.49-52 IS - 13354205 AB - To prevent failure states of transformer, we performed different types of measurements. We made measurements of a frequency dependence of capacity of test transformer immersed in tank with transformer oil. The capacity illustrates a momentary state of the measured equipment and its variations to indicate the changes in the transformer oil. Water content in the transformer oil causes deterioration of its insulation and, finally, thermal defect of solid insulation.