Abstract
For protection against excessive voltage occurrences in power plants, protective and lightning arrester grounding is used, which are most often connected to each other and galvanically connected to the groundings of other facilities through the protective ropes of transmission lines and cable sheaths. The fundamental safety condition that must be satisfied by the earthing device is that the step and touch voltage must not exceed the predetermined values anywhere. In the most unfavorable case, which is the occurrence of a double ground connection, the step and touch voltage meets the technical regulations on the grounding of power plants.

Full Professor
Faculty alumnus with a research focus in the development of measurement methods in high-voltage systems, signal analysis in electrical power systems, and the application of geoelectrical methods in energy infrastructure. Prof. Milun has been involved in numerous scientific projects, including those related to the optimization of grounding systems for high-voltage plants and the development of transient measurement methods. He has authored 38 scientific papers and over 150 professional studies.

Full Professor | Department of Electrical Measurements
Full professor at the at the Faculty of Electrical Engineering, Mechanical Engineering and Naval Architecture in Split, with professional reserch focus on power quality, signal analysis in electrical power systems, and measurement of process variables, alongside a significant role in the academic and administrative life of the University of Split.

Full Professor | Department of Electrical Measurements
Prof. dr. sc. Goran Petrović is a full professor at the Faculty of Electrical Engineering, Mechanical Engineering and Architecture in Split. His research interests include measurement of electrical and process quantities, analysis of geoelectrical and geothermal features of the soil, instrumentation for smart grids, measurement and application of synchrophasors. He is the author of numerous papers published in top-tier scientific journals and contributed to valuable international and national scientific projects.