Title :
Experimental Investigation Concerning Influence Of Electron Emission On The Withstand Performance Of SF6 Gaps
Author_Institution :
Chalmers Institute of Technology
Abstract :
The controversial question whether electron emission from a highly stressed cathode may reduce the withstand voltage of SF6 insulated gaps between very smooth electrodes has been examined experimentally by means of a special model containing a vessel, which could be either evacuated or filled with SF6 gas. The results indicate, that the limitation of the withstand voltage at field strengths above 20 kV/ mm was caused by field emission of electrons from the cathode.
Keywords :
Cathodes; Electrodes; Electron emission; Gas insulation; Space charge; Substations; Sulfur hexafluoride; Testing; Transactions Committee; Voltage;
Journal_Title :
Power Apparatus and Systems, IEEE Transactions on
DOI :
10.1109/TPAS.1985.319061
