Comparison of Impedance Characteristics of Copper- and Carbon-Eearth Electrode by Application of Various Current Source

다양한 전류원에서 접지동봉과 탄소접지극의 임피던스 특성 비교

In this paper, we carried out an comparative analysis on ground impedance of single copper-, three linked copper- and single carbon- electrodes by the application of various current sources such as sine, square, and surge with fast risetime. Impedance of single-copper electrode was the highest among them and was affected as the amplitude and the frequency of applied current. However, impedance characteristics of the three linked copper- and the single carbon- electrodes showed a similar tendency.