Title :
Positive streamer in cyclohexane under microsecond pulse voltage
Author :
Yamada, H. ; Murakami, T. ; Kusano, K. ; Fujiwara, T. ; Sato, T.
Author_Institution :
Dept. of Electr. Eng., Iwate Univ., Morioka, Japan
fDate :
8/1/1991 12:00:00 AM
Abstract :
The electrical breakdown phenomenon in cyclohexane for point-to-plane gap configuration has been investigated using an image converter camera and photooptical current measuring technique. The photographic records for 4-mm gap spacing show the propagation of positive streamers with average velocities ranging from sonic to supersonic. Time to breakdown for gap spacing <2 mm was directly measured from prebreakdown current. Three linear relations between the time lag and gap spacing are obtained, which indicate three average propagation velocities: 0.18 km/s subsonic, 1.3 km/s sonic, and 2.8 km/s supersonic velocity
Keywords :
discharges (electric); electric breakdown of liquids; organic insulating materials; cyclohexane; electrical breakdown; image converter camera; microsecond pulse voltage; photographic records; photooptical current measuring; point-to-plane gap configuration; positive streamers; prebreakdown current; propagation velocities; supersonic velocity; Breakdown voltage; Cameras; Current measurement; Electric breakdown; Electrodes; Image converters; Light emitting diodes; Pulse measurements; Streaming media; Testing;
Journal_Title :
Electrical Insulation, IEEE Transactions on
