Title :
DC short-circuit treeing phenomenon and space charge effect in EPR at cryogenic temperature
Author :
Minoda, Atsushi ; Nagao, Masayuki ; Kosaki, Masamitsu
Author_Institution :
Dept. of Electr. & Electron. Eng., Toyohashi Univ. of Technol., Japan
Abstract :
Short-circuit tree initiation voltage of EPR at cryogenic temperature is much higher than that at room temperature. Space charge measurement was carried out using pulsed electroacoustic method. Injection of negative space charge occurred at room temperature from the cathode, but at cryogenic temperature the injection is very limited. For DC electrical insulation, space charge is less problematic at cryogenic temperature than at room temperature
Keywords :
cryogenics; ethylene-propylene rubber; space charge; trees (electrical); DC short-circuit treeing; EPR; cryogenic temperature; electrical insulation; pulsed electroacoustic method; space charge; Charge measurement; Cryogenics; Current measurement; Paramagnetic resonance; Pulse measurements; Pulsed electroacoustic methods; Space charge; Temperature measurement; Trees - insulation; Voltage;
Conference_Titel :
Properties and Applications of Dielectric Materials, 1997., Proceedings of the 5th International Conference on
Conference_Location :
Seoul
Print_ISBN :
0-7803-2651-2
DOI :
10.1109/ICPADM.1997.617627
