This International Standard is applicable to the procedure to be used for insulating liquids in
delivery containers and in electrical equipment such as power and instrument transformers,
reactors, bushings, oil-filled cables, oil-filled tank-type capacitors, switchgear and load tap
changers (LTCs).
This standard applies to liquids the viscosity of which at the sampling temperature is less than
1 500 mm2/s (or cSt). It applies to mineral oils and non-mineral oils (such as synthetic esters,
natural esters, vegetable oils or silicones).