NDLI: Measurement of induced electrical pressure in insulating liquids under high electrical fields

Content Provider	IEEE Xplore Digital Library
Author	El-Khodary, S.M. Nosseir, A.
Copyright Year	1990
Description	Author affiliation: Fac. of Eng., Ain-Shams Univ., Cairo, Egypt (El-Khodary, S.M.; Nosseir, A.)
Abstract	Experimental results on the electrical pressures generated in liquid dielectrics under high direct voltages are presented. Nonuniform fields (cone-plane) were used in the experiments. A controlled air bubble was injected through a hole at the apex of the conical electrode via a bubble injection system. The internal pressure inside the bubble was measured under various test conditions. Experiments were carried out on silicone oil, transformer oil, and n-hexane. Results show that negative polarity gives higher electrical pressure than positive polarity. The p*d characteristics of the bubbles were determined as a function of the applied voltage. The ionization level of the bubbles, where the bubble changes from the nonconducting to the conducting state, was determined from the results obtained. The results show that time is needed for the electrical pressures to build up inside the liquid.<>
Starting Page	469
Ending Page	473
File Size	148644
Page Count	5
File Format	PDF
DOI	10.1109/ICDL.1990.202946
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1990-09-10
Publisher Place	France
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Electric variables measurement Pressure measurement Dielectrics and electrical insulation Dielectric liquids Dielectric measurements Voltage Control systems Electrodes Testing Petroleum
Content Type	Text
Resource Type	Article

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