Picture of UK Houses of Parliament

Leading national thinking on politics, government & public policy through Open Access research

Strathprints makes available scholarly Open Access content by researchers in the School of Government & Public Policy, based within the Faculty of Humanities & Social Sciences.

Research here is 1st in Scotland for research intensity and spans a wide range of domains. The Department of Politics demonstrates expertise in understanding parties, elections and public opinion, with additional emphases on political economy, institutions and international relations. This international angle is reflected in the European Policies Research Centre (EPRC) which conducts comparative research on public policy. Meanwhile, the Centre for Energy Policy provides independent expertise on energy, working across multidisciplinary groups to shape policy for a low carbon economy.

Explore the Open Access research of the School of Government & Public Policy. Or explore all of Strathclyde's Open Access research...

Pre-breakdown currents in insulating liquids stressed with non-uniform DC electric field

Timoshkin, I. and Given, M.J. and MacGregor, S.J. and Wilson, M.P. (2009) Pre-breakdown currents in insulating liquids stressed with non-uniform DC electric field. In: 17 IEEE International Pulsed Power Conference, 1900-01-01.

Full text not available in this repository.Request a copy from the Strathclyde author

Abstract

This paper is aimed at investigation of the pre-breakdown conduction characteristics of insulating liquids. Two mineral oils and a synthetic ester fluid were used in the tests. The current-voltage characteristics have been measured in the point-plane electrode configuration, the needle electrode was stressed with positive and negative DC voltage. The current voltage characteristics demonstrated non-linear behavior over a large range of voltages, this current behavior could be attributed to the space-charge saturation regime of conduction in insulating liquids. DC breakdown voltages have been monitored and registered. It has been shown that MIDEL 7131 synthetic ester has a lower breakdown strength as compared with the tested mineral oils. Also it has been shown that positive breakdown voltage is lower than the negative breakdown voltage for the insulating liquids used in this study.