Environmental factors affecting DC resistance to tracking of polyethylene

This paper discusses the environmental factors affecting DC resistance to tracking of polyethylene. The voltage, as determined under the conditions specified in the following, which will cause failure with the application of 50 drops of electrolyte, is used as a measure of the susceptibility of the...

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Bibliographic Details
Published in:IEEE transactions on dielectrics and electrical insulation 2004-10, Vol.11 (5), p.911-912
Main Authors: Mason JH, Du, B.X., Kobayashi, S.
Format: Article
Language:English
Subjects:
Conductivity
Direct current
Droplets
Electric potential
Electrical resistance measurement
Electrodes
Environmental factors
Epoxy resins
Failure
IEC standards
Phenolic resins
Pollution measurement
Polyethylene
Polyethylenes
Testing
Tracking
Underwater tracking
Voltage
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Summary:This paper discusses the environmental factors affecting DC resistance to tracking of polyethylene. The voltage, as determined under the conditions specified in the following, which will cause failure with the application of 50 drops of electrolyte, is used as a measure of the susceptibility of the material to tracking, it is called the CTI (contaminant tracking index). A tracking test was set up to investigate dc and ac tracking resistance of epoxy resin, phenolic resin and polycarbonate by IEC 112. The test solution was with 0.1 % ammonium chloride NH/sub 4/Cl in deionized water, giving a resistivity of approximately 4/spl Omega/m at 23/spl deg/C. A droplet was applied at intervals to keep up the discharge between the two electrodes. Epoxy and phenolic resins are tracking type materials.
ISSN:1070-9878
1558-4135
DOI:10.1109/TDEI.2004.1349797