The present invention provides an electric insulating oil composition that has excellent low temperature properties, hydrogen gas absorbability and giving less adverse effect on living bodies and comprises [A] 1, 1-diphenylethane in an amount of 30 to 70 percent by mass, [B] at least one or more component selected from 4 components that are (a) 1-phenyl-1-methylphenylethane, (b) 1-phenyl-1-xylylethane, (c) 1-phenyl-1-ethylphenylethane and (d) benzyltoluene in a total amount of 30 to 70 percent by mass, and [C] 1,2-diphenylethane in an amount of 0.1 to 2 percent by mass and/or diphenylmethane in an amount of 0.1 to 13 percent by mass.
本发明提供了一种电气绝缘油组合物,该组合物具有优异的低温性能和
氢气吸收性,对
生物体的不良影响较小,包括[A]1, 1-二苯基
乙烷,其质量百分比为 30%至 70%、[B] 至少一种或多种选自以下 4 种成分的组分:(a) 1-苯基-1-甲基苯基
乙烷、(b) 1-苯基-1-羟基
乙烷、(c) 1-苯基-1-
乙基苯基
乙烷和(d)
苄基甲苯,总用量为 30% 至 70%(按重量计),以及 [C] 1,2-二苯基
乙烷,用量为 0.1%至 2%(质量百分比)和/或 0.1%至 13%(质量百分比)的
二苯基甲烷。