Title :
Space charge distribution measurements in XLPE and EPR subjected to a uniform DC field
Author :
Dakka, M. Abou ; Bulinski, A. ; Bamji, S.
Author_Institution :
Nat. Res. Council of Canada, Ottawa, Ont., Canada
Abstract :
Space charge distributions in crosslinked polyethylene (XLPE) and ethylene propylene rubber (EPR) subjected to dc fields of ~25 and 50 kV/mm in a dry environment at room temperature is investigated. To simulate the insulation of high voltage cable, the specimens were equipped with semicon electrodes. Aging with dc field generates considerably more space charge in EPR than in XLPE and the local electric stresses associated with the accumulated space charge can be significant. EPR develops heterocharge at both stress levels whereas XLPE develops heterocharge at the lower but homocharge at the higher stress
Keywords :
XLPE insulation; ethylene-propylene rubber; space charge; XLPE; aging; crosslinked polyethylene; dry environment; ethylene propylene rubber; heterocharge; high voltage cable; homocharge; insulation; room temperature; space charge distribution; uniform DC field; Cable insulation; Charge measurement; Current measurement; Paramagnetic resonance; Polyethylene; Rubber; Space charge; Stress; Temperature distribution; Voltage;
Conference_Titel :
Electrets, 1999. ISE 10. Proceedings. 10th International Symposium on
Conference_Location :
Athens
Print_ISBN :
0-7803-5025-1
DOI :
10.1109/ISE.1999.831822
