Title :
Characteristic of AC surface spark voltage in LN/sub 2/ and LHe
Author :
Nitta, T. ; Chiba, M. ; Uematsu, Hisashi
Author_Institution :
Tokyo Univ., Japan
fDate :
3/1/2000 12:00:00 AM
Abstract :
The AC surface spark-over voltages on solid insulators with a back electrode in liquid N/sub 2/ (LN/sub 2/) and liquid He (LHe) were measured and discussed. The larger gap length did not give a higher spark-over voltage. The spark-over voltage in LHe was about two-thirds of that in LN/sub 2/. Experimental studies were carried out on how bubbles in liquid influence surface spark-over voltage. The result shows that it does not influence the voltage.
Keywords :
bubbles; liquid helium-4; nitrogen; sparks; surface discharges; AC surface spark voltage; AC surface spark-over voltages; He; N/sub 2/; back electrode; bubbles; gap length; liquid He; liquid N/sub 2/; solid insulator; surface spark-over voltage; Insulation; Large Hadron Collider; Petroleum; Solids; Sparks; Stress; Surface discharges; TV; Voltage control;
Journal_Title :
Applied Superconductivity, IEEE Transactions on
