Impulse Testing of Underground, Direct-Buried Cable

The goal of this project was to execute and analyze full-scale high voltage impulse tests on underground distribution cable. The system was composed of direct-buried bare concentric neutral cable, terminations, a rise pole and a short overhead line. The tests validated classical underground distribution system overvoltage protection theory, and included comparisons of SiC and ZnO arrester performance, comparisons of arrester placement, and mid-span voltage magnification due to taps.

Tagged: Equipment Testing/Evaluation, P1, Engineering Guidelines, P1-1, System Protection