DocumentCode :
1385076
Title :
The electric strength of highly compressed gases
Author :
Cohen, E. Howard
Author_Institution :
Associated Electrical Industries, Ltd., Research Laboratory, UK
Volume :
103
Issue :
7
fYear :
1956
fDate :
2/1/1956 12:00:00 AM
Firstpage :
57
Lastpage :
68
Abstract :
An experimental study of spark-breakdown potentials in compressed gases is reported. Direct voltages up to 150kV and electrodes giving a uniform field in the test gap were used. The gap length was in the range 1¿3 mm. The variation of spark-breakdown potentials with gas pressure is given for air and nitrogen in the pressure range 1¿70 atmospheres. The effect of using aluminium instead of steel electrodes is shown. Sulphur hexafluoride, carbon dioxide, and the fluoromethanes CCl2F2, CHClF2, CCIF3 were similarly tested up to their saturation vapour pressures. Comparison is made between the strengths of mixtures containing various proportions of air in nitrogen, with mixtures containing the same proportions of carbon dioxide in nitrogen. Various mixtures of air and sulphur hexafluoride, nitrogen and sulphur hexafluoride, and nitrogen and CCl2F2 were tested. Comparison is made with previous measurements in the limited range where this is possible. Paschen´s Law and the criterion for spark-breakdown at high gas pressure are discussed.
Keywords :
electric breakdown; gaseous insulation;
fLanguage :
English
Journal_Title :
Proceedings of the IEE - Part A: Power Engineering
Publisher :
iet
ISSN :
0369-8882
Type :
jour
DOI :
10.1049/pi-a.1956.0055
Filename :
5241751
Link To Document :
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