Chong, Y L, Miyake, H, Tanaka, Y, Takada, T, Nakama, H and Chen, G
Space Charge in Polyethylene under AC Electric Stress using the Pulsed Electroacoustic Method.
In, IEEE 2004 International Conference on Electrical Insulation and Dielectric Phenomena, Boulder, Colorado, USA,
17 - 20 Oct 2004.
This paper reports on space charge in XLPE planar samples of approximately 220 ?m thick subjected to dc 30 kV/mm and 1 Hz, 10 Hz and 50 Hz ac 30 kVpk/mm conditions for 24 hours. Measurement of space charge was carried out using the pulsed electroacoustic (PEA) technique. In addition, experiments with higher applied electric stress of 60 kVpk/mm at 50 Hz ac condition were also conducted over an ageing period of 24 hours. In order to investigate the effect degassing on space charge distribution of samples under ac stress, both as-received and degassed were used in this study.
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