Equigradient Lines in the Vicinity of Bundle Conductors

A general method is presented to find potential gradient values at any point in the vicinity of bundles with any number of subconductors; it is convenient to use relative values referred to the maximum surface gradient. Practically standard charts of equigradient lines covering the whole spectrum of values for bundles with two, three, four, and six subconductors are calculated using a digital computer and plotted separately for the close and more remote vicinity.