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Surface flashover in liquid nitrogen
1999 Annual Report Conference on Electrical Insulation and Dielectric Phenomena (Cat. No.99CH36319), 2003The use of cryogenic high voltage components to achieve higher energy densities is limited by virtually unknown insulator characteristics for cryogenic conditions. Using a fast coaxial setup, the flashover phenomena of dielectric test samples (Lexan, Alumina) immersed in liquid nitrogen are measured with optical and electrical diagnostics with ...
M. Butcher +3 more
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Electro-optical surface flashover measurements
Applied Physics Letters, 1980Electro-optical measurements of the electric field along solid insulator/vacuum interfaces have been made to determine the mechanisms associated with fast (ns) insulator flashover. Data showing the temporal and spatial performance of the insulator surface fields prior to and at flashover are presented.
J. E. Thompson +3 more
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Flashover simulation on contaminated surfaces
Conference on Electrical Insulation & Dielectric Phenomena - Annual Report 1974, 1974The actual conditions of contaminated surfaces have a consistent influence on the performance of insulation apparatus.
G. Lupo, B. Macchiaroli
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SILICON AND GALLIUM ARSENIDE VACUUM SURFACE FLASHOVER
Ninth IEEE International Pulsed Power Conference, 1992Photoconductive semiconductor switches (PCSS) presently have the greatest potential for dramatic performance enhancements for high power pulsed applications. However, surface flashover severely limits the maximum stand off voltage in the open state. We report the use of a novel technique to PCSS to overcome this limitation.
Juan M. Elizondo +2 more
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Aerial flashover caused by surface flashover generated from microscopic pores of insulating solid
Electrical Engineering in Japan, 2009AbstractThis paper studies the possibility of an aerial flashover between a coil conductor and the casing in a rotating machine at voltages below Paschen's voltage even when sufficient insulation distance has been provided. It might be considered that partial surface flashover generated from microscopic pores of a solid insulator generates the aerial ...
Jotaro Shirai +8 more
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Flashover surface spectrometry
Conference on Electrical Insulation & Dielectric Phenomena - Annual Report 1972, 1972A bakeable, ultrahigh vacuum, time-of-flight mass spectrometer has been constructed in order to investigate, for the first time, the nature of the ion species formed prior to the flashover of a parallel plate diode.1 During operation, the field in the gap of the diode is maintained approximately 5% below that required for visible flashover.
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Insulator surface conduction state and surface flashover voltage
Proceedings of 1995 Conference on Electrical Insulation and Dielectric Phenomena, 2002The withstand of aged and or contaminated insulators has to be tested in a humid environment under controlled conditions. However, during the humidification the conduction state of the aged and/or contaminated insulators shows a temporal variation.
A.E. Vlastos, J. Hulten
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Surface flashover of insulators
IEEE Transactions on Electrical Insulation, 1989The author reviews surface flashover (i.e. voltage breakdown along the surface of insulators), primarily in vacuum. He discusses theories and models relating to surface flashover and pertinent experimental results. Surface flashover of insulators in vacuum generally is initiated by the emission of electrons from the cathode triple junction (the region ...
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Conference on Electrical Insulation & Dielectric Phenomena - Annual Report 1973, 1973
When a solid insulator in vacuum is subjected to a high-voltage pulse with short rise time, a low-resistance flashover path may be formed in a few nanoseconds across several centimeters of insulator surface.1,2 Although the details of the breakdown mechanism remain obscure, it is generally accepted that field emission of electrons at the cathode ...
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When a solid insulator in vacuum is subjected to a high-voltage pulse with short rise time, a low-resistance flashover path may be formed in a few nanoseconds across several centimeters of insulator surface.1,2 Although the details of the breakdown mechanism remain obscure, it is generally accepted that field emission of electrons at the cathode ...
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Flashover voltage of artificially contaminated surfaces
Proceedings of the Institution of Electrical Engineers, 1971Tests were carried out to analyse the influence of geometrical and physical parameters of a contaminating layer on the flashover of small flat surfaces. The wet-contaminant method was used, and the alternating and direct flashover voltages were related to different values and distributions of thickness, width and resistivity of the contaminant layer ...
B. Macchiaroli, M. Rea
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