Ключевые слова:
Pressure testing|Acidity|Mineral oils|Quality control|Liquid electrical insulating materials|Type testing|Liquid-level indicators|Kinematic viscosity|Electrical equipment|Oil-filled electrical equipment|Breakdown voltage|Protected electrical equipment|Type o protected electrical equipment|Flash point|Pour point|Performance|Pressure regulators|Fire point (temperature)|Temperature|Oil-immersed transformers|Explosive atmospheres|Electrical resistivity|Insulating oils