Title :
Moisture Equilibrium Charts for Transformer Insulation Drying Practice
Author_Institution :
Westinghouse Electric Corporation Transformer Divisions
Abstract :
A set of moisture equilibrium charts applicable to transformer insulation is presented. These may be used for the estimation of dryness levels in transformer insulation during the preparative and operational stages, and also during storage. A critique on the well known Piper chart is provided. Techniques to construct equilibrium curves for the combined paper-oil system from indirect measurements are outlined, and the interpretation of these curves for practical situations is discussed.
Keywords :
Aging; Dielectrics and electrical insulation; Filling; Manufacturing; Moisture measurement; Oil insulation; Petroleum; Power transformer insulation; Pressure measurement; Voltage transformers;
Journal_Title :
Power Apparatus and Systems, IEEE Transactions on
DOI :
10.1109/TPAS.1984.318326
