This tutorial shows how to use the Fault Current Distribution module in ELEK SafeGrid Earthing Software to model an earth fault on an overhead transmission line with an underground cable link.

With the Fall of Potential Test, the resistance of an earthing system is measured using a remote earth electrode. There is a theoretical position of 61.8 % of the separation distance between the measured grid and the remote electrode, which is the correct position for measuring the exact grid impedance for uniform soil resistivity but not for multilayer soils. This tutorial shows ELEK SafeGrid Earthing Software users how to simulate an FOP test.