Title :
Flashover voltage of epoxy-resin surfaces in carbonized transformer oil
Author :
Krins, M. ; Borsi, H. ; Gockenbach, E.
Author_Institution :
Schering-Inst. of High Voltage Tech. & Eng., Hannover Univ., Germany
Abstract :
This paper reports on experimental investigations dealing with the influence of carbon particles on the flashover voltage of the interface between epoxy resin rods and mineral based transformer oil in a homogeneous as well as in an inhomogeneous electrode configuration. The obtained results reveal that In an uniform field the flashover voltage under carbonized oil for long gap distances is slightly higher than under new oil. In case of a non-uniform electrode arrangement an increase of the carbon content is combined with a significant improvement of the breakdown and the flashover voltage
Keywords :
epoxy insulation; flashover; transformer oil; carbon particles; carbonized transformer oil; epoxy resin surface; flashover voltage; homogeneous electrode; inhomogeneous electrode; interfacial breakdown; mineral oil; rod; Breakdown voltage; Electrodes; Flashover; Minerals; Needles; Oil insulation; Permittivity; Petroleum; Power transformers; Testing;
Conference_Titel :
Properties and Applications of Dielectric Materials, 1997., Proceedings of the 5th International Conference on
Conference_Location :
Seoul
Print_ISBN :
0-7803-2651-2
DOI :
10.1109/ICPADM.1997.617607
