DocumentCode :
2474505
Title :
Treeing of ethylene-propylene rubber in cryogenic temperature region
Author :
Kosaki, Masamitsu ; Minoda, Atsusli ; Mitsuyama, Yasuiclu ; Mizuno, Yukio ; Nagao, Masayuki
Author_Institution :
Dept. of Electr. & Electron. Eng., Toyohashi Univ. of Technol., Japan
fYear :
1993
fDate :
17-20 Oct 1993
Firstpage :
701
Lastpage :
706
Abstract :
The authors report results on the treeing resistivity of EPR (ethylene-propylene rubber) at both liquid nitrogen temperature and room temperature, and the effect of fillers on treeing. A treeing test method was established for opaque sample based on the detection of partial discharges. At room temperature, fillers lower the tree initiation voltage slightly but the growth of tree channels is inhibited by fillers. The tree initiation voltage at liquid nitrogen temperature is about three times higher than that at room temperature. Fillers improve treeing resistivity slightly. EPR has sufficient resistance to treeing at liquid nitrogen temperature. High reliability is expected during the long term operation of extruded EPR-insulated superconducting power cables considered by the authors
Keywords :
ethylene-propylene rubber; filled polymers; partial discharges; power cable insulation; superconducting cables; trees (electrical); 300 K; 77 K; EPR; cryogenic temperature region; ethylene-propylene rubber; extruded EPR-insulated superconducting power cables; fillers; long term operation; opaque sample; partial discharges; reliability; room temperature; tree initiation voltage; treeing; treeing resistivity; treeing test method; Conductivity; Cryogenics; Nitrogen; Paramagnetic resonance; Partial discharges; Rubber; Superconducting cables; Temperature; Testing; Voltage;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Electrical Insulation and Dielectric Phenomena, 1993. Annual Report., Conference on
Conference_Location :
Pocono Manor, PA
Print_ISBN :
0-7803-0966-9
Type :
conf
DOI :
10.1109/CEIDP.1993.378891
Filename :
378891
Link To Document :
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