| abstract |
The invention relates to the use for the so-called "high temperature" distribution transformers of a dielectric composition, comprising at least one polyarylalkane oligomer, which consists of an isomer or a mixture of isomers of formula: wherein n 1 and n 2 = 0, 1 or 2 knowing that n 1 + n 2 is 1 or 2, x = 0, 1, 2, 3, 4, 5 or 6 and having such a breakdown voltage increasing with the temperature. |