| 摘要 |
FIELD: electricity. ^ SUBSTANCE: method of earth specific electric resistance measurement for earthing devices of power transmission lines includes earth contact with measuring electrodes, measurement of voltage between electrodes during preset current passage through earth, calculation of specific earth resistance by measured values of voltage and current. According to invention measurements are carried out directly in pit that is drilled in earth for the purpose of power transmission line support installation with the help of measuring electrodes, which are submerged parallel to earth surface into pit side wall and are installed on the same line in vertical plane that coincides with pit axis within the limits of its full depth from the earth surface to the base. Also another two versions of suggested method are proposed. ^ EFFECT: reduction of labor intensiveness of measurement works, reduction of time spent for measurements; higher accuracy of resistance measurements by means of its measurement directly in pit for support prior to its installation. ^ 3 cl, 3 dwg |
