| 摘要 |
This invention relates to electric insulating oils consisting of mineral oils having boiling point of 200 DEG C. or higher, preferably from 250 DEG to 450 DEG C., and having a viscosity of from 2 to 500 cst (at 40 DEG C.), pour point of -35 DEG C. or below, a sulfur content of 5 ppm or less and an aromatic hydrocarbon content (% CA) of 5% or less. |
