| Title |
Personnel Safety Related to Disconnection of PEN Conductor in TN-C-S System |
| Authors |
Jung-Cheol Kim ; Kyu-Sun Lee ; Bok-Hee Lee |
| DOI |
http://dx.doi.org/10.5207/JIEIE.2012.26.5.058 |
| Keywords |
TN-C-S System ; PEN Conductor ; Touch Voltage ; Personal Safety ; Grounding System ; Earthing |
| Abstract |
In electric power supply systems, an earthing system determines the electric potential of the conductors related to that of the Earth’s surface. The choice of earthing system has implications for the safety of the power supply systems. There are considerably different regulations for earthing (grounding) systems in each country. A protective earth(PE) conductor ensures that all exposed conductive surfaces are at the same electric potential as the earth surface. This paper deals with that when PEN conductor of TN-C-S system is disconnected, dangerous touch voltage causes personnel body to be harmed and human being’s property to be damaged seriously. For this reason, this paper explains how serious problems can occur when the fault current flows. As a consequence, we can understand how we can design earthing system properly to ensure the personnel safety against earth faults. The result shows the way that TN-C-S system can be applied safely in Korea. |