The influence of nearby earthed objects and of the polarity of the voltage on the direct-voltage breakdown of horizontal sphere-gaps
- 1 January 1961
- journal article
- Published by Institution of Engineering and Technology (IET) in Proceedings of the IEE - Part A: Power Engineering
- Vol. 108 (40) , 302-307
- https://doi.org/10.1049/pi-a.1961.0061
Abstract
Experiments were made to determine, the influence of nearby earthed objects on the breakdown voltages of 6.25 and 12.5cm-diameter sphere-gaps. The effect was found to be a function of both gap length and sphere diameter. A method has been discussed for establishing clearances which are suitable for use when the sphere-gaps are employed for accurate voltage measurements. Recommended clearances have been quoted which are suitable for all sizes of spheres, and a distinction has been made between the clearance conditions required for experimental calibrations of the breakdown voltages, and those required when a calibrated gap is used for the measurement of voltage.The polarity of the direct voltage had only a small influence on the breakdown voltages of the gaps.Keywords
This publication has 0 references indexed in Scilit: