Title :
Effect of electrode ice layer on prebreakdown current in liquid nitrogen
Author :
Hanaoka, R. ; Ishibashi, R. ; Usui, Y. ; Inagaki, D.
Author_Institution :
Dept. of Electr. Eng., Kanazawa Inst. of Technol., Ishikawa, Japan
fDate :
8/1/1994 12:00:00 AM
Abstract :
The effect of ice on dc prebreakdown events was investigated using a needle-to-plane electrode system in liquid nitrogen at 77.3 K. It was found that H2O ice has marked effects on prebreakdown current, corona onset voltage and breakdown voltage. The breakdown voltage at atmospheric pressure depends on microscopic cracks in H2 O ice
Keywords :
corona; cryogenics; electric breakdown of liquids; electrodes; ice; nitrogen; 77.3 K; N2; atmospheric pressure; breakdown voltage; corona onset voltage; dc prebreakdown events; electrode ice layer; liquid nitrogen; microscopic cracks; needle-to-plane electrode system; prebreakdown current; Breakdown voltage; Conductivity; Corona; Electrodes; Fiber reinforced plastics; Ice; Microscopy; Needles; Nitrogen; Temperature;
Journal_Title :
Dielectrics and Electrical Insulation, IEEE Transactions on
