Perbandingan Tegangan Residu Arester SiC dan ZnO Terhadap Variasi Front Time

Abstract

Abtract The high intensity of the occurrence of lightning causing lightning strike on many distribution lines. The characteristic of surge (over voltage) generated by lightning strike may change due to the impedance of distribution line. Arrester installation is expected to protect transformer as the main of the electrical system against the surge wave. There are two kinds of arrester according to the material, metal oxide (ZnO) and silicon carbide (SiC). Arrester ZnO replaces arrester SiC because it is considered better in providing protection against power equipment. this research was conducted on test scale laboratory to know the comparison of residual voltage as ZnO and SiC arrester output against surge wave that has variation of the front time value. The result shows that ZnO arrester thus has protection characteristic better than SiC arrester against surge with the variation of front time.