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Transformer oils

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Transformer oils are used for filling power and measuring transformers, reactor equipment, as well as oil switches. In the latter apparatuses, oils perform the functions of an arcing medium. The electrical insulating properties of oils are determined mainly by the tangent of the dielectric loss angle. The dielectric strength of transformer oils is mainly determined by the presence of fibers and water, therefore, mechanical impurities and water in oils should be completely absent.

A low pour point of oils (-45 ° C and below) is necessary to maintain their mobility at low temperatures. To ensure effective heat removal, transformer oils must have the lowest viscosity at a flash point of at least 95, 125, 135 and 150 ° C for different brands. The most important property of transformer oils is oxidation stability, i.e. the ability of the oil to maintain parameters during long-term operation.

image

Transformer oils are used for filling power and measuring transformers, reactor equipment, as well as oil switches. In the latter apparatuses, oils perform the functions of an arcing medium. The electrical insulating properties of oils are determined mainly by the tangent of the dielectric loss angle. The dielectric strength of transformer oils is mainly determined by the presence of fibers and water, therefore, mechanical impurities and water in oils should be completely absent.

A low pour point of oils (-45 ° C and below) is necessary to maintain their mobility at low temperatures. To ensure effective heat removal, transformer oils must have the lowest viscosity at a flash point of at least 95, 125, 135 and 150 ° C for different brands. The most important property of transformer oils is oxidation stability, i.e. the ability of the oil to maintain parameters during long-term operation.

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