AC filter arrester application

Arresters are being used in increasing numbers to provide surge protection inside of harmonic fiiters. The continuous voltage across these arresters is frequently a mixture of significant magnitudes of various harmonic voltages. Temporary overvoltages may result from system overvoltages or filter overloading. This investigation considers both the continuous arrester heating caused by a mixture of harmonic voltages and the effect of temporary overvoltages in order to provide guidelines for the appropriate selection of an arrester voltage rating for this type of application.