Abstract
Polythene samples, 0.09–0.18 cm thick, with artificial voids have been subjected to pulses lasting for 10−6–10−2s with a wide range of waveforms, at electric stresses of 0.2−0.9MV/cm. It was found that, for a given peak stress, the life obtained with unidirectional pulses was independent of waveshape; it was independent of the pulse-repetition frequency from 1 to 4 pulses/s, but longer lives were obtained at 50 pulses/s. Life was shorter on oscillatory than on unidirectional pulses of the same peak stress and was unaffected by sample thickness.The results are consistent with life being controlled by the intrinsic electric strength of the polythene, and indicate that a space charge may be set up and decay with a time constant of the order of 10−3s.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callMore From: Proceedings of the Institution of Electrical Engineers
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
