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Evaluation of Humidity Correction Factor of Disruptive Discharge Voltage of Standard Sphere Air Gaps
Author(s) -
Fujii Osamu,
Hayakawa Student Takahiro,
Mizuno Yukio,
Naito Katsuhiko
Publication year - 2008
Publication title -
ieej transactions on electrical and electronic engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.254
H-Index - 30
eISSN - 1931-4981
pISSN - 1931-4973
DOI - 10.1002/tee.20240
Subject(s) - humidity , impulse (physics) , environmental science , meteorology , voltage , relative humidity , atmospheric sciences , materials science , electrical engineering , physics , engineering , quantum mechanics
The humidity correction method prescribed in the existing IEC standard is based on experimental data obtained under absolute humidity between 5 and 12 g/m 3 . A discussion on the humidity correction method is needed for higher absolute humidity regions, which is experienced during summer in Japan, and also throughout the year in tropical countries. The effect of absolute humidity on disruptive discharge voltages of standard sphere air gaps has been studied experimentally for several years under conditions of natural humidity, between 2 and 22 g/m 3 . In the cases of a.c. and lightning impulse voltage application, it was found that the existing IEC humidity correction method seems to be proper for most of the gap spacings studied under absolute humidity up to 22 g/m 3 . Copyright © 2007 Institute of Electrical Engineers of Japan. Published by John Wiley & Sons, Inc.