DocumentCode
1723304
Title
Electrical discharges in small air gap
Author
Altafim, R.A.C. ; Nunes, V.A.A. ; Giacometti, J.A. ; Oliveira, O.N., Jr.
Author_Institution
Sao Paulo Univ., Sao Carlos, Brazil
fYear
1992
Firstpage
316
Lastpage
321
Abstract
Electric discharges in small air gaps (10-300 μm) were investigated by measuring the charge transferred to a dielectric foil which filled part of the air gap and was subjected to an impulsive high voltage. The Teflon FEP samples were charged (thus forming electrets) if the peak impulse voltage exceeded a threshold value. Measurements were performed in order to investigate the importance of the metallic electrode and the voltage impulse duration. Also discussed are the mechanisms for triggering the discharge in the air gap and the processes for charge transfer to the dielectric
Keywords
discharges (electric); electrets; gaseous insulation; spark gaps; 10 to 300 micron; Teflon; charge transfer; dielectric foil; electrical discharges; impulsive high voltage; metallic electrode; polymer electrets charging; small air gap; triggering; voltage impulse duration; Air gaps; Charge measurement; Charge transfer; Current measurement; Dielectric measurements; Electrets; Electric variables measurement; Electrodes; Performance evaluation; Threshold voltage;
fLanguage
English
Publisher
ieee
Conference_Titel
Electrical Insulation and Dielectric Phenomena, 1992. Annual Report. Conference on
Conference_Location
Victoria, BC
Print_ISBN
0-7803-0565-5
Type
conf
DOI
10.1109/CEIDP.1992.283169
Filename
283169
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