Considerations Regarding the Characterization and Design of Vertical Earth Grounding

In the paper, five global and synthetic sizes are proposed for the earth grounding, predestined to represent distinguishing criteria and to justify the chosen solution: the footprint area, the dispersion surface, the metal part mass and the earth grounding volume have technical character, while the investment cost has an economic nature. Resuming the sizing relationships of earth grounding gives the opportunity to develop a new nomogram for calculating the dissipation resistance of a single vertical earth grounding as well as highlighting the quality and quantity of its specific dependencies. Processed forms are presented in the paper as well for the use coefficients of the multiple earth grounding, defining the determination of the electrode number which minimizes at least one of the proposed global sizes as the main target of the study