Measuring conductor resistance and reactance

IN CONNECTION with a study of a-c resistance and reactance of large conductors in steel pipe and conduit, made for the Insulated Power Cable Engineers Association, measurements were made of isolated conductors in air, 3-cabled conductors in air, and finally the 3-cabled conductors in various sizes of conduit. Each of these stages raised measurements problems, especially when it became desirable to determine the component losses due to each of the several factors operating. It likewise became necessary to establish the accuracy with which measurements could be made.