Title :
Characteristics of electrical tree inception under impulse voltage application superposed onto AC voltage
Author :
Murata, Yoshinao ; Katakai, Shoshi ; Kanaoka, Mamoru
Author_Institution :
Hitachi Cable Ltd., Ibaraki, Japan
Abstract :
Using XLPE block specimens, characteristics of impulse tree inception superposed onto AC voltage were studied. The results are summarized as follows: 1) Impulse tree inception voltage superposed onto AC voltage decreases with the pre-applied AC voltage in both `field aiding´ and `field opposing´ cases; 2) The above characteristics are considered to be caused by the influence of the impulse voltage application itself as well as the space charge effect
Keywords :
XLPE insulation; transients; trees (electrical); AC voltage; XLPE block; electrical tree inception; impulse voltage; Breakdown voltage; Cables; Delay effects; Electric breakdown; Electrodes; Needles; Optical microscopy; Space charge; Stress; Trees - insulation;
Conference_Titel :
Electrical Insulating Materials, 1995. International Symposium on
Conference_Location :
Tokyo
Print_ISBN :
4-88686-047-8
DOI :
10.1109/ISEIM.1995.496531
