| Title |
A Study on the Characteristics of Ground Resistance over Time of Concrete Embedded Grounding Electrodes |
| Authors |
전송민(Soung-Min Jun) ; 이창성(Chang-Seong Lee) ; 지평식(Pyeong-Shik Ji) |
| DOI |
https://doi.org/10.5370/KIEEP.2023.72.2.83 |
| Keywords |
Korea Electro-technical Code(KEC); Earth potential; Contact voltage; Step voltage; Ground resistance |
| Abstract |
In accordance with the Korea Electro-technical Code(KEC), which took effect on January 1, 2021, concrete foundation rebar can be newly applied as a type of ground electrode. Using the foundation rebar of a building as a ground electrode is economically advantageous because it does not require additional grounding equipment and the structure of a typical building (rebar and steel H-beam) is easy to maintain electrical continuity. Because of these advantages, more and more building foundation rebar are being used as ground poles in actual construction.
In this paper, the characteristics of grounding resistance over time when using these concrete foundation rebar as grounding electrodes in construction sites were analyzed. To this end, we proposed a plan to connect ground wires to concrete foundation rebar in two buildings under construction to measure and analyze the grounding resistance of the building over time for about four months and apply ground poles to the actual site. |