Proceedings of the Korean Institute of IIIuminating and Electrical Installation Engineers Conference (한국조명전기설비학회:학술대회논문집)
- 2008.10a
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- Pages.193-196
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- 2008
Measurement of Grounding Impedances in Large-scale Grounding Electrode Systems
대형접지전극시스템 접지임피던스의 측정
Abstract
In these days, large structures are constructed and bonded with ground grid Because the distances between mesh and auxiliary electrodes are not enough in downtown areas, it is very difficult to measure the ground resistance of large scale grounding electrode systems. Actually the auxiliary electrodes for test are installed in grounding grid. This paper present the experimental results of ground resistance and impedance according to the location of auxiliary electrode. As a result, we get much lower resistances and impedances than real values the auxiliary electrodes are placed in the ground grid. In case that the auxiliary electrodes are located in the ground grid the resistances are very low and reactance only is inductive component.
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