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ESI
(Energy Services International)
Group of Companies

Chemical contamination is typically colour absorbed from the type of varnish used on the windings or resins used in the cellulose pressboard packers and spacers....

Transformers are the single most expensive item of high voltage plant in a substation. It is a recognised fact that deterioration of transformer oil, through either oxidation and/or contamination, can cause premature and at times catastrophic failure....

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Moisture Content

 Measures the water content of the oil at a particular temperature. This is an extremely important test as it can be related to the actual moisture content, by dry weight, of the transformer winding....

Is there any such thing as new mineral oil? Take the carcasses of a few million dinosaurs, a few thousand hectares of

trees and sub-vegetation, bury them under hundreds of meters of mud and sludge for a thousand years or so and you have ‘new’ oil....

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