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Thermally stimulated current (TSC) spectra were observed in open-circuit condition for corona-charged polypropylene films from room temperature to about 160°C. In these TSC spectra, two kinds of reversal currents I1 and I2 were found: I1 appeared at room temperature and rapidly decreased with increasing temperature, whereas I2 increased with temperature to form a TSC band. These anomalous currents...
In this note, we report anomalous currents the type of which is different to that of Giacometti et al. or Coelho et al. for corona-charged film samples of polypropylene (PP) with higher molecular weight in comparison with the usual film-use PP.
Polyethylene is widely used as an insulating material, for power cables under AC high field. Dissipation current waveform observation method, which has been developed by authors, is very powerful technique to detect high field nonlinear dielectric property and by using this method, not only the various kinds of numerical processing but also the observation under the various kinds of applied voltage...
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