Author_Institution :
Dussek Bros, and Co., Ltd., Crayford, Kent, England
Abstract :
IN EUROPE, the advantages of adding rosin to oil blends are considered to be (1) greatly improved resistance to oxidation under factory conditions; (2) increased electric strength; (3) increased cable stability and life; and (4) a viscosity-temperature characteristic consistent with the requirements of low viscosity at elevated temperatures, facilitating impregnation, as well as high viscosity at ambient and normal operating temperature, reducing drainage.