Answer / suneel

napthaenic oil

Answer / v.srinivas

In 1970s polychlorinated biphenyls(PCB) Is used.But this is in toxicity, so (PCB) is banned in many countries. Today we are using non-toxic,stable silicon based OR flouridated hydrocarbons are used,so pentaerythritol tetra fatty acid(C7, C8) Esters are also becoming increasingly common as alternatives to Naphthenic mineral oil.

Answer / ambuj kumar

Transformer oil is basically a fresh dielectric oil and we call it transformer oil only.The qualities that it should posses are as follows
1. High dielectric strength. around 30kv/cm.
2. High flash and pour point.
3. It should not form toxic substances at high temprature.
4. It should have good insulation and cooling properties.

Answer / shibnath paul

polychlorinated Biphynile synthetic oil

Answer / imam hossain

silicon based mineral oil that can provide proper cooling,
insulation, no formation sludge and high flash point.

Answer / hitesh nandanwar

use of insulating oil in x-mer
because then properly and
directly cooling of x-mer and
ignition low tempreture .

Answer / manikandan.e

Hydro carbon mineral oil.

Answer / abdulquddus

dia cloro dia floro tetra ethyal benzine

Answer / ramesh patel

mainly napthenic oil, polychlorinated biphenyls (PCBs) and mostly all are the part of a hydrocarbon oil.

Answer / raghav

Hydrotreated Light Nepthanic Distillate

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