On the measurement of the conductivity of highly insulating liquids

Author

Tobazéon, R. ; Filippini, J.C. ; Marteau, C.

Author_Institution

Lab. d´´Electrostatique et de Materiaux Dielectriques, CNRS, Grenoble, France

Volume

1

Issue

6

fYear

1994

fDate

12/1/1994 12:00:00 AM

Firstpage

1000

Lastpage

1004

Abstract

The present increasing interest for accurate conductivity measurements on highly insulating liquids is underlined. Criteria for valuable measurements are recalled. An apparatus using a new technology is briefly described. It allows us to perform a number of experiments and it is shown that accurate measurements of the conductivity of highly insulating oils can now be obtained at room temperature. Experiments carried out in an extended range of electrode gap distance from 0.7 to 7 mm, and of voltage from 0.1 to 100 V, demonstrate that we do measure the volume conductivity of the liquid. From a practical point of view, it is concluded that laboratory or in-line measurements on highly insulating oils can also be made using small volume of liquid or small electrode gap distance

Keywords

electrical conductivity measurement; insulating oils; 0.1 to 100 V; 0.7 to 7 mm; conductivity measurement; electrode gap distance; highly insulating liquids; insulating oils; room temperature; volume conductivity; Bridge circuits; Conductivity measurement; Current measurement; Dielectric liquids; Dielectric measurements; Dielectrics and electrical insulation; Oil insulation; Performance evaluation; Power transformer insulation; Voltage;

fLanguage

English

Journal_Title

Dielectrics and Electrical Insulation, IEEE Transactions on

Publisher

ieee

ISSN

1070-9878

Type

jour

DOI

10.1109/94.368663

Filename

368663