학술논문
Influence of thin layers on static electrification phenomena of materials for power transformers
Document Type
Conference
Author
Source
Conference Record of the 1998 IEEE International Symposium on Electrical Insulation (Cat. No.98CH36239) Electrical insulation Electrical Insulation, 1998. Conference Record of the 1998 IEEE International Symposium on. 2:656-659 vol.2 1998
Subject
Language
ISSN
1089-084X
Abstract
The static electrification phenomenon is investigated, using a test cell with a rotating metallic disk coated on both sides with thin layers (0,5 and 2 /spl mu/m) of conducting, semiconducting and insulating materials, obtained by magnetron sputtering. The current characterising the static electrification is studied as a function of the nature of the coating material and the oil, the temperature and the rotating velocity of the disk. Modification of the surface properties has a decisive influence on the static electrification of insulating oils, the sign and the amplitude of the currents are strongly affected.