Dielectric field in an electric power cable-ii

The writer presented a paper in 1919 on the three-conductor cable, giving experimental results for assisting in the calculation of quantities such as capacity, insulation resistance, dielectric loss, temperature rise, etc., and also data on the calculation of stresses at various points in the dielectric. Most of the data were based on cable models composed of metallic electrodes surrounded by conducting electrolyte. In the present paper the old data are amplified both in regard to geometric properties and stresses of three-conductor cables, not only in regard to the range of sizes covered, but especially, inasmuch as the present paper includes cables with sector-shaped conductors. The cable models used are entirely different, being in the form of tinfoil sheets. Curves are given by means of which stresses can be calculated in various important parts of the cross-section of three-conductor cables with either round or sector-shaped conductors.