Application of Metal-Oxide-Varistor Surge Arresters on Distribution Systems

The emergence of the metal-oxide varistor (MOV) has made a significant impact on station-class surge arrester technology. Areas in which MOV arresters will provide superior protection on distribution systems are examined even though the current discharge voltage characteristics of MOV arresters are the same as those of conventional surge arresters. Areas discussed include ¿Severe switching areas (capacitor banks); ¿High temporary overvoltage areas; ¿Underground and overhead systems.