Abstract
This paper discusses the findings of the study of the possibility of using some vegetable oils as high voltage insulation materials. Samples of palm oil (elaeis guineensis), palm kernel oil (elaeis guineensis), coconut oil (cocos nucifera), groundnut oil(Arachis hypogea) and local pear oil(dacryodes edulis) were obtained from Ekwulobia town, processed and tested. The results obtained showed exciting performance for palm oil, palm kernel oil and groundnut oil. Investigation on the dielectric strength of local pear oil (dacryodes eduli) is inconclusive because the sample collected was not sufficient for the tests.
Highlights
The mineral oils in use for high voltage insulation contain hydrocarbons and some proportions of sulphur and nitrogen
The palm and palm kernel oils can be comfortably used as transformer oil in the tropics without further treatment to reduce the pour points
The breakdown voltage is 30Kv; suggesting that it can be used in high voltage system
Summary
The mineral oils in use for high voltage insulation contain hydrocarbons and some proportions of sulphur and nitrogen. They can cause health problems (e.g cancer, etc) and are highly corrosive and dangerous to aquatic lives and crops. Fats are solid usually of animal origin while oils are liquids mainly from plants. Both are esters of the trihydric alkanol, propane 1,2,3-triol. Vegetable oils are complex mixture of propane -1, 2, 3 – triol esters, their properties depend mainly on the proportion of each constituent. Vegetable oils have lower melting points than fats because they are composed of higher proportion of esters of unsaturated fatty acids
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