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The breakdown strength of commercial polyethylene
1956 Conference on Electrical Insulation, 1956Most available dielectric strength data for polyethylene apply to laboratory-prepared specimens that have been tested with very special electrodes under highly artificial test conditions. This paper reports certain of the results of extensive impulse tests performed on commercial polyethylene with plane electrodes that approximate the conditions found ...
C. R. Vail, W. F. Gaustex
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Oxidation dependence of breakdown strength of XLPE
Conference on Electrical Insulation and Dielectric Phenomena, 2003It has been shown in a previous study (P. Rohl, 1982) that the breakdown strength of polyethylene increases with increasing oxidation levels. The purpose of the research reported here is to verify this somewhat surprising result. Unlike the earlier work, cross-linked polyethylene (XLPE), the principal insulation used in extruded cables, is utilized ...
G. Gagnon, S. Pelissou, M.R. Wertheimer
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Breakdown-Strength Enhancement of Coaxial-to-Waveguide Adapters
Journal of Communications Technology and Electronics, 2021An improved structure of a high-power adapter is proposed for broadband matching of coaxial transmission lines and rectangular waveguides with a narrow side wall that are network used in space communication systems. Numerical simulation and optimization of such a microwave two-port are performed with the aid of the finite-element method in a frequency ...
V. V. Komarov +2 more
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Nonsustained Breakdowns in Electrical Strength Tests
IEEE Transactions on Power Apparatus and Systems, 1966A study of nonsustained breakdowns has been made during alternating voltage tests on the electric strength of various commercial insulants in transformer oil and compressed sulphur hexafluoride and nitrogen. Such breakdowns do not cause sustained arcing and current flow.
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True dielectric breakdown strength of cable papers
Electrical Engineering, 1948The object of this study is to present a new unique way of controlling edge effect and thus obtain the true dielectric breakdown strength of electric cable insulating papers, to compare the dielectric strength of paper so determined with the dielectric strength of other materials and with the dielectric strength of built-up paper insulation, and to ...
Paul Cloke, Burt Bates
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Electric breakdown strength measurement in liquid dielectrics
2010 9th International Conference on Environment and Electrical Engineering, 2010Development of new technologies and materials in electric power engineering is very closely associated with question of ecology presently. Daily, there is consumed thousands tons of electro-insulating materials, including of electroi-nsulating oil, which are the main component of paper - oil transformers by the electric power systems devices production.
Martin Marci, Iraida Kolcunova
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Breakdown strength of nitrogen at high temperatures
Electrical Engineering, 1961IN A-C circuit-interrupting devices, the post-arc period immediately after current zero is of paramount importance. This period is characterized by the rapid cooling and deionization of the hot gases between the contacts, which build up the dielectric strength of the gap.
A. H. Sharbaugh +4 more
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Enhancement of breakdown strength of polyetherimide laminates
Proceedings of IEEE Conference on Electrical Insulation and Dielectric Phenomena - (CEIDP '93), 2002The breakdown strength of polymer laminates, polymer base films coated with thin layers of polyvinylidene fluoride (PVDF), was investigated. The PVDF film was coated using a spin coating technique. The DC breakdown strength was studied using an ASTM standard and could be increased by as much as 20% for the polyetherimide laminates.
J.P. Zheng, P. Cygan, T.R. Jow
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IEEE Transactions on Dielectrics and Electrical Insulation, 2011
The aim of this research is to find a way to achieve the epoxy composites with high thermal conductivity and acceptable dielectric breakdown (BD) strength. A value 12.3 W/m·K is the highest thermal conductivity obtained for epoxy composite in Part I.
Zengbin Wang +4 more
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The aim of this research is to find a way to achieve the epoxy composites with high thermal conductivity and acceptable dielectric breakdown (BD) strength. A value 12.3 W/m·K is the highest thermal conductivity obtained for epoxy composite in Part I.
Zengbin Wang +4 more
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1983
Solid dielectrics are universally employed throughout the electrical industry as both insulators and charge storage media. Although much research on dielectrics has been aimed at improving insulation for high-voltage equipment in the power industry, there are numerous other applications for which a fundamental understanding of the mechanisms of ...
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Solid dielectrics are universally employed throughout the electrical industry as both insulators and charge storage media. Although much research on dielectrics has been aimed at improving insulation for high-voltage equipment in the power industry, there are numerous other applications for which a fundamental understanding of the mechanisms of ...
openaire +1 more source