Title :
Degradation analysis of mineral oil in an oil-immersed ZnO-based surge arrester
Author :
Meshkatoddini, M.R. ; Loubiere, A. ; Bui, A.
Author_Institution :
Lab. de Genie Electr., Univ. Paul Sabatier, Toulouse, France
Abstract :
In this work the degradation of transformer mineral oil in oil-immersed ZnO-based surge arresters has been studied. Three different kinds of ZnO varistors: 1-non-coated, 2-resin-coated and 3-glass-coated, have been used in this study. It can be seen that after long-period high thermal constraints in oil there is a deposited layer on the varistors´ surface which call disturb the function of the non-coated varistors. It is also observed that the ZnO varistor and its coating have an influence on degradation of the oil
Keywords :
arresters; transformer oil; varistors; zinc compounds; ZnO; ZnO varistor; degradation analysis; glass coating; oil-immersed surge arrester; resin coating; thermal factors; transformer mineral oil; Aging; Arresters; Cleaning; Minerals; Oil insulation; Petroleum; Surges; Thermal degradation; Varistors; Zinc oxide;
Conference_Titel :
Conduction and Breakdown in Dielectric Liquids, 1996, ICDL '96., 12th International Conference on
Conference_Location :
Roma
Print_ISBN :
0-7803-3560-0
DOI :
10.1109/ICDL.1996.565584
