Title :
Strength investigations on long oil gaps
Author :
Lick, W. ; Muhr, Markus
Author_Institution :
Technische Univ. Graz, Austria
Abstract :
We deal with the electrical strength properties of oil gaps. The investigations were carried out with uniform electrical fields and electrode distances up to 30 mm. Measurements were performed with alternating current (50 Hz), lightning impulses and switching impulses. Such investigations usually have a relative high dispersion of the measurement values. It will be shown that it is possible to minimize the coefficient of variation to values of about 5 to 6 percent.
Keywords :
electric breakdown; insulating oils; 30 mm; 50 Hz; alternating current; electrical strength properties; electrode distances; high statistical security; lightning impulses; long oil gaps; switching impulses; uniform electrical fields; Breakdown voltage; Dispersion; Electric breakdown; Electrodes; Gaussian distribution; Petroleum; Safety; Security; Shape measurement; Testing;
Conference_Titel :
Dielectric Liquids, 2002. ICDL 2002. Proceedings of 2002 IEEE 14th International Conference on
Print_ISBN :
0-7803-7350-2
DOI :
10.1109/ICDL.2002.1022736
