Ключевые слова:
Oil-filled electrical equipment, Electrical equipment, Gases, Dissolved gases, Insulating oils, Mineral oils, Oil-immersed transformers, Transformers, Power transformers, Instrument transformers, Bushes (mechanical components), Switches, Switchgear, Solid electrical insulating materials, Paper, Pressboard, Defects, Gas analysis, Concentration (chemical), Degradation