Mention the properties of transformer oil.

1.	Mention the properties of transformer oil.
Answer» Properties of transformer oil are, a) Colour – pale yellow. b) Moisture content - <10 ppm. c) Acidity (KOH/gramme of oil) – <0.1. d) Dielectric strength – limit value is 45 kV and preferable value is 60 kV. e) Flashpoint - 141º C. f) Inter-surface tension – 30 to 40 dynes / cm or 0.3 to 0.4 Newton. g) Resistivity –

Answer»

Properties of transformer oil are,

a) Colour – pale yellow.

b) Moisture content - <10 ppm.

c) Acidity (KOH/gramme of oil) – <0.1.

d) Dielectric strength – limit value is 45 kV and preferable value is 60 kV.

e) Flashpoint - 141º C.

f) Inter-surface tension – 30 to 40 dynes / cm or 0.3 to 0.4 Newton.

g) Resistivity –

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