Ключевые слова:
Liquid electrical insulating materials, Insulating oils, Dielectric materials, Solid electrical insulating materials, Electrical insulating materials, Chemical analysis and testing, Determination of content, Water content determination, Volumetric analysis, Coulometric methods, Karl Fischer method, Automatic, Impregnated materials, Paper, Pressboard, Board (paper), Concentration (chemical), Chemical composition, Test equipment, Reproducibility, Test specimens, Specimen preparation