Title :
Effects of additives on prebreakdown phenomena in n-hexane
Author :
Nakao, Y. ; Itoh, H. ; Hoshino, S. ; Sakai, Y. ; Tagashira, H.
Author_Institution :
Dept. of Electr. & Electron. Eng., Muroran Inst. of Technol., Japan
fDate :
6/1/1994 12:00:00 AM
Abstract :
Prebreakdown phenomena in n-hexane are observed in detail for positive and negative polarities by using simultaneously a high speed schlieren technique and an LED current measuring system, when an impulse voltage (1.1/225 μs) is applied to a point-to-plane electrode gap. Furthermore, the effects of several additives on the streamer propagation are investigated. Especially the effects of electron-trapping additives on negative streamer propagation and of low ionization potential additives on the positive streamer propagation, are examined, as is a correlation between the shape and the propagation velocity of the streamers
Keywords :
dielectric materials; electric breakdown of liquids; electron traps; organic compounds; 1.1 to 225 mus; C6H14; LED current measuring system; additives; electron-trapping additives; high speed schlieren technique; impulse voltage; low ionization potential additives; n-hexane; negative streamer propagation; point-to-plane electrode gap; positive streamer propagation; prebreakdown phenomena; propagation velocity; streamer propagation; Additives; Cameras; Dielectric breakdown; Dielectric liquids; Electric breakdown; Electrodes; Ionization; Light emitting diodes; Shape; Voltage;
Journal_Title :
Dielectrics and Electrical Insulation, IEEE Transactions on
