DocumentCode :
1074548
Title :
Dielectric Properties of Cryogenic Liquids
Author :
Mathes, Kenneth N.
Author_Institution :
Research and Development Center, General Electric Company, Schenectady, N. Y.
Issue :
1
fYear :
1967
fDate :
4/1/1967 12:00:00 AM
Firstpage :
24
Lastpage :
32
Abstract :
Electric-breakdown measurements at 60 Hz have been made with cryogenic liquids-nitrogen, hydrogen, and helium. All of the cryogenic liquids have higher breakdown voltages than conventional transformer oil, except liquid helium which breaks down at a considerably lower voltage. The measured values of dielectric constant for the cryogenic liquids agree quite well with the published literature. The dissipation factor of the cryogenic liquids is so low that true values cannot be reported. They appear to be below 0.000001. However, by comparison of the indicated values, it appears that the dissipation factor of liquid helium may be about ten times that of liquid hydrogen.
Keywords :
Breakdown voltage; Cryogenics; Dielectric constant; Dielectric liquids; Dielectric measurements; Electric variables measurement; Helium; Hydrogen; Oil insulation; Voltage measurement;
fLanguage :
English
Journal_Title :
Electrical Insulation, IEEE Transactions on
Publisher :
ieee
ISSN :
0018-9367
Type :
jour
DOI :
10.1109/TEI.1967.298846
Filename :
4081310
Link To Document :
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