Title :
Metal vapor plasma jets in the high-current vacuum arcs
Author_Institution :
Inst. of Electr. Power Eng., Poznan Tech. Univ., Poland
Abstract :
The high-current vacuum arcs behavior were studied by high-speed photography in the current range of 4-20 kA peak. The arc of a half-wave sinusoidal current of about 50 Hz (in the current rise period) was burned between copper electrodes of 30, 55 and 80 mm diameter, spaced 10 mm apart. The electrodes were separated before the high-current pulse was supplied. The arc plasma pattern was found to be strongly influenced by the cathode spots distribution on the electrode, their spreading speed and their uniformity. The few phases which occurred during the current pulse are briefly discussed
Keywords :
cathodes; electric breakdown; insulation testing; plasma diagnostics; plasma jets; vacuum arcs; vacuum breakdown; vacuum insulation; 10 mm; 30 mm; 4 to 20 kA; 50 Hz; 55 mm; 80 mm; arc plasma pattern; cathode spots distribution; electrodes; half-wave sinusoidal current arc; high-current vacuum arcs; high-speed photography; insulation breakdown tests; metal vapor plasma jets; spreading speed; uniformity; Cameras; Cathodes; Circuit testing; Contacts; Copper; Electrodes; Laboratories; Plasmas; Vacuum arcs; Voltage;
Conference_Titel :
Discharges and Electrical Insulation in Vacuum, 1996. Proceedings. ISDEIV., XVIIth International Symposium on
Conference_Location :
Berkeley, CA
Print_ISBN :
0-7803-2906-6
DOI :
10.1109/DEIV.1996.545328
