Title :
Factors affecting the charging characteristics of solid insulators in vacuum — influence of voltage shape and pressure —
Author :
Yamamoto, Osamu ; Takeda, Daisuke ; Akiyama, Hironori ; Ohsawa, Yasuharu ; Morii, Hiroshi
Author_Institution :
Dept. of Electr. Eng., Kyoto Univ., Kyoto
Abstract :
This paper deals with factors affecting the charging characteristics of insulators exposed to high voltages in vacuum. We examined the influence of voltage shape on charging. A ramped dc and impulse voltages were tested in a low pressure and found that the amount of charge was larger for the impulse voltage than that for dc voltage. We also examined the influence of pressure that varies from 10-5 Pa to 1 Pa and found that an insulator acquired more charge in a high pressure range than that acquired in a low pressure range.
Keywords :
electric charge; insulators; vacuum circuit breakers; charging characteristics; impulse voltages; ramped dc voltage; solid insulators; vacuum circuit breaker; voltage pressure; voltage shape; Anodes; Dielectrics and electrical insulation; Electrodes; Probes; Rough surfaces; Shape; Solids; Surface charging; Surface roughness; Voltage;
Conference_Titel :
Discharges and Electrical Insulation in Vacuum, 2008. ISDEIV 2008. 23rd International Symposium on
Conference_Location :
Bucharest
Print_ISBN :
978-973-755-382-9
Electronic_ISBN :
1093-2941
DOI :
10.1109/DEIV.2008.4676720
