NDLI: Electrical breakdown of vacuum insulation at cryogenic temperature

Content Provider	IEEE Xplore Digital Library
Author	Fengnian Hao Weihan Wu
Copyright Year	1988
Description	Author affiliation: Dept. of Electr. Eng., Tsinghua Univ., Beijing, China (Fengnian Hao; Weihan Wu)
Abstract	A breakdown experiment on vacuum insulation for the development of cryocable and other cryogenic electrical apparatus was performed. The influence of conditioning, pressure, gap spacing, electrode material, and voltage waveform on the breakdown voltage of vacuum insulation was measured at room temperature and at cryogenic temperature. The results indicate that cooling the high-voltage sphere electrode enhances the breakdown strength of vacuum insulation, and, in general, almost all effects of electrical breakdown of vacuum insulation at room temperature are reproduced at cryogenic temperature at somewhat higher voltage. From the point of view of microparticle-initiated breakdown, the ratio of low-temperature to room-temperature breakdown voltages is discussed.
Starting Page	101
Ending Page	104
File Size	343690
Page Count	4
File Format	PDF
DOI	10.1109/ICPADM.1988.38343
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1988-09-12
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Vacuum breakdown Electric breakdown Dielectrics and electrical insulation Cryogenics Temperature Breakdown voltage Electrodes Aluminum Anodes Steel
Content Type	Text
Resource Type	Article

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Electrical breakdown of vacuum insulation at cryogenic temperature