Enhancing Performance of Filament Cage Metal Oxide Surge Arresters: MV & HV Applications
The Uc of a metal oxide arrester is one of the most important design criteria since good protection can only be achieved if the arrester is not electrically, thermally or mechanically overloaded. This presentation reports on research contributing to dimensioning and selection of filament cage type MO arresters and presents a measuring system to determine electrical conductivity and power loss density of MO varistors with a DC voltage and one or more superimposed AC voltages with different frequencies.