Title :
Observation of partial discharge in hexane under high magnification
Author :
Stricklett, K.L. ; Fenimore, C. ; Kelly, E.F. ; Yamashita, H. ; Pace, M.O. ; Blalock, T.V. ; Wintenberg, A.L. ; Alexeff, I.
Author_Institution :
Nat. Inst. of Stand. & Technol., Gaithersburg, MD, USA
fDate :
8/1/1991 12:00:00 AM
Abstract :
Partial discharges were observed in hexanes by means of shadow photography under the application of DC voltages. A nonuniform field geometry was used, and the growth of cavities associated with partial discharges at a point cathode was photographed at 200× magnification. A multiframe photograph of the cavity and a simultaneous record of the partial-discharge current provide a detailed record of the temporal and spatial development of the discharge. Examination of these data suggests that electrostatic forces are of primary importance in driving the growth of the cavity near its inception
Keywords :
electric breakdown of liquids; organic insulating materials; partial discharges; DC voltages; cavities; electrostatic forces; hexane; liquid; nonuniform field geometry; partial discharge; shadow photography; Application software; Cathodes; Dielectric liquids; Electrodes; Electrostatics; NIST; Optical recording; Partial discharges; Photography; Voltage;
Journal_Title :
Electrical Insulation, IEEE Transactions on
