University of Leicester
Browse
Paper21.pdf (481.04 kB)

Anomalous dielectric response of very small quantities of virgin, aged and failed silicone oil.

Download (481.04 kB)
journal contribution
posted on 2008-09-15, 15:45 authored by A. Haidar, John C. Fothergill, Len A. Dissado, P. Hopewell
A technique is described for making dielectric spectroscopy measurements of very small quantities (<1μl) of oil. The technique utilises surface tension to hold the oil between the plates of a capacitor, the inter-electrode distance being controlled by a micrometer. Breakdown strength can also be estimated using this technique. Three samples of silicone oil, used in cable sealing ends, were tested: virgin, used and failed. A major component in the frequency dependent impedance had the form Z(ω)=B(1-b)(iω)/sup.1-p/). This component was interpreted in terms of a fractal percolation model, and the anomalous thickness dependence predicted by the model verified by varying the inter-electrode distance. The difference observed for the three different samples indicate that conducting contaminants are responsible for the percolation system.

History

Citation

IEEE Transactions on Dielectrics and Electrical Insulation, 2003, 10 (2), pp. 336-342.

Published in

IEEE Transactions on Dielectrics and Electrical Insulation

Publisher

Institute of Electrical and Electronics Engineers (IEEE)

issn

1070-9878

Copyright date

2003

Available date

2008-09-15

Publisher version

http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=1194120

Language

en

Usage metrics

    University of Leicester Publications

    Categories

    Keywords

    Exports

    RefWorks
    BibTeX
    Ref. manager
    Endnote
    DataCite
    NLM
    DC