Title :
Prebreakdown events in DC and AC stressed n-hexane
Author :
McGrath, P.B. ; Marsden, H.I.
Author_Institution :
Dept. of Electr. & Comput. Eng., Clarkson Univ., Potsdam, NY, USA
fDate :
29 Oct-2 Nov 1989
Abstract :
An imaging system using shadow-graph optics in conjunction with a 3-ns-duration pulse laser was used to investigate prebreakdown events in DC and AC stressed n-hexane. The use of either DC or AC was shown to produce results that are essentially identical for a given electrode polarity. In addition, the prebreakdown images obtained bear a strong resemblance to those seen in impulse tests. This result suggests that prebreakdown events respond principally to the magnitude and polarity of the applied electric field, and that space charge and liquid motion exert minor influence
Keywords :
dielectric properties of liquids and solutions; discharges (electric); electric breakdown of liquids; organic compounds; 0.027 to 0.3 MPa; AC stressed n-hexane; DC stressed n-hexane; applied electric field; electrode polarity; imaging system; impulse tests; liquid motion; prebreakdown events; prebreakdown images; pulse laser; shadow-graph optics; space charge; Electrodes; Needles; Optical films; Optical imaging; Optical pulses; Optical recording; Pulse amplifiers; Streaming media; Testing; Voltage;
Conference_Titel :
Electrical Insulation and Dielectric Phenomena, 1989. Annual Report., Conference on
Conference_Location :
Leesburg, VA
DOI :
10.1109/CEIDP.1989.69529
