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A large-area multiple breakdown measurement using self-healing gold sputtered electrodes was evaluated in determining the AC breakdown characteristics of insulating biaxially oriented polypropylene (BOPP) and BOPP-silica nanocomposite thin films. Results were compared with conventional small area measurements and it is shown that the large-area approach could be extended into AC measurements as long...
Most of what is known about the electrical properties of dielectrics is attributable to various forms of current-voltage measurements. Reliance on this limited method often has generated untested theories rather than fundamental understanding.
Recently, we have correlated impulse strength of oils with measurements of prebreakdown streamer velocities.1 This paper extends such work to composite solid-liquid systems. The methods for measuring streamer velocities by shadowgraphy have been described previously.2 The creepage fixture utilizes two cylindrical electrodes (1.27 cm diameter) resting on the solid dielectric whose other surface is...
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