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.
Transient (Time-domain) Earthing & Grounding Grid Calculations
ELEK SafeGrid Earthing Software can perform calculations in the time domain such as for lightning currents. Transient waveforms are composed of many frequency components and Fourier transforms are used. The transient waveform types include IEC 62305, CIGRE, Heidler, Double-exponential, and Custom. The time-domain response of an earthing system can be analysed.