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Journal of the Korean Institute of Illuminating and Electrical Installation Engineers

ISO Journal TitleJ Korean Inst. IIIum. Electr. Install. Eng.
Title Improved Mesh Grounding Electrode Model by Changing Arrangements of Internal Conductors of the Mesh Grounding Electrode
Authors Yong-Sik Shim ; Hong-Kyu Choi ; Tai-Hoon Kim ; Young-Joo Song
DOI http://dx.doi.org/10.5207/JIEIE.2010.24.6.060
Page pp.60-66
ISSN 1225-1135
Keywords Oblique-Shaped Equidistance Grounding Grid ; Mesh Voltage ; GPR ; Ground Resistance
Abstract Mesh grounding electrodes in Korea and abroad are designed as lattice-shaped equidistance grounding grids. In case of a lattice-shaped grounding Grid, however, there is a problem of higher touch voltage at the corner of the grid relative to the center. To overcome this problem, we used oblique-shaped equidistance grounding grid to reduce the area of the corner where mesh voltage occurs. As a result the mesh voltage was reduced. Therefore, this paper suggests the use of oblique-shaped grounding grid instead of the existing lattice-shaped ones. It applied the same grounding design dimensions for both lattice-shaped and oblique-shaped grounding grids, compared and analyzed mesh voltage, GPR, ground resistance, total length of grounding conductor, verified that oblique-shaped grounding grid is superior to the lattice-shaped.