High stress electrical oil

Details High stress electrical oil High stress electrical oil

C - Chemistry, Metallurgy

10

M

C10M 141/06 (2006.01) C10M 101/02 (2006.01) C10M 129/10 (2006.01) C10M 133/44 (2006.01) C10M 169/04 (2006.01) C10M 171/00 (2006.01) H01B 3/22 (2006.01) H01F 27/12 (2006.01)

Patent

CA 2373585

An oil composition useful as a high stress electrical oil and especially as a transformer load tap changer oil is provided. The composition comprises a major amount of a paraffinic oil having a low viscosity of less than about 20 cSt @ 40 ~C and an effective amount of an additive system including at least one hindered phenolic antioxidant and a benzotriazole metal deactivator.

L'invention concerne une composition d'huile utile en tant qu'huile isolante soumise à des contraintes d'intensité élevée et en particulier en tant qu'huile de changeur de prise en charge de transformateur. La composition contient une quantité principale d'une huile paraffinique ayant une faible viscosité inférieure à environ 20 cSt @ 40 ·C et une quantité efficace d'un système d'additifs contenant au moins un antioxydant phénolique entravé et un désactivateur métal benzotriazole.

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