Title :
Degradation of zinc oxide varistors
Author :
Montenegro, Julio C. ; Ramirez, Jorge L.
Author_Institution :
Laboratorio de Alta Tension, Simon Bolivar Univ., Caracas, Venezuela
Abstract :
The zinc oxide varistors are the most recent component used in manufacturing modern surge arresters for power system protection. Fast degradation and loss of the nonlinear characteristics of the varistors drastically reduces the arrester´s life expectancies. Some of the most important factors are presented here and how they could affect performance in protecting power systems from overvoltages
Keywords :
arresters; overvoltage protection; power system protection; semiconductor device reliability; varistors; zinc compounds; ZnO; degradation; life expectancy; nonlinear characteristics; overvoltage protection; power system protection; surge arresters; varistors; Arresters; Ceramics; Circuits; Degradation; Power system protection; Surge protection; Surges; Varistors; Voltage control; Zinc oxide;
Conference_Titel :
Devices, Circuits and Systems, 1995., Proceedings of the 1995 First IEEE International Caracas Conference on
Conference_Location :
Caracas
Print_ISBN :
0-7803-2672-5
DOI :
10.1109/ICCDCS.1995.499175
