Requirements for Dielectric

Theoretically all insulating liquids can be used as dielectrics. However, due to the requirements set out below, only de-ionized water (for polishing) and hydrocarbons are used for this purpose today. These hydrocarbons can either be produced by distillating and refining mineral oil, or synthetically by processing gases in a synthetizing oven with the help of a catalyst.

Synthetically produced hydrocarbons are characterized by otherwise unparalleled purity. In addition, precisely those chains of hydrocarbon molecules can be synthetized which have the best possible erosive effect as well as offering optimum protection against electrode wear. In this way they are far superior to those mineral oil products which are produced from certain mineral oil fractions.

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