Title :
Influence of thin layers on static electrification phenomena of materials for power transformers
Author :
Rottenberg, W. ; Fleszynski, J. ; Beroual, A.
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 μm) 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
Keywords :
power transformer insulation; sputtered coatings; static electrification; transformer oil; conducting material; insulating material; insulating oil; magnetron sputtering; power transformer; rotating metallic disk; semiconducting material; static electrification; thin layer coating; Conducting materials; Inorganic materials; Insulation; Magnetic materials; Magnetic semiconductors; Materials testing; Petroleum; Semiconductivity; Semiconductor device testing; Semiconductor materials;
Conference_Titel :
Electrical Insulation, 1998. Conference Record of the 1998 IEEE International Symposium on
Conference_Location :
Arlington, VA
Print_ISBN :
0-7803-4927-X
DOI :
10.1109/ELINSL.1998.694878
