General
Insulating liquids in electrical engineering - General presentation

Insulating liquids are used as impregnants for solid insulation or as fillers for a wide range of electrical equipment: transformers (power, distribution, traction, furnace, measurement, etc.), reactors, capacitors, cables, bushings, circuit breakers, tap changers, etc. [8] .

Their main role is to remove air and other gases to improve the dielectric strength of the insulation (the dielectric strength of liquids is much higher than that of gases