Title :
High-speed photography of PMMA breakdown under ns pulse voltages
Author :
Yamada, Hiroshi ; Fujiwara, Tamiya ; Tamada, Koji
Author_Institution :
Dept. of Electr. & Electron. Eng., Iwate Univ., Morioka, Japan
fDate :
8/1/1994 12:00:00 AM
Abstract :
The electrical breakdown process in polymethyl methacrylate for a point-to-plane gap configuration has been studied using an image convertor camera and a nanosecond rectangular HV pulse generator. The propagation velocity of the breakdown channel for positive polarity is estimated to be ~80 km/s. The velocity is of the same order as that of secondary fast streamers in several hydrocarbon liquids
Keywords :
electric breakdown of solids; high-speed optical techniques; impulse testing; streak photography; PMMA breakdown; breakdown channel; electrical breakdown process; high-speed photography; image convertor camera; nanosecond rectangular HV pulse generator; point-to-plane gap configuration; polymethyl methacrylate; positive polarity; propagation velocity; Breakdown voltage; Electric breakdown; Electrodes; Optical microscopy; Optical pulse shaping; Optical recording; Photography; Solids; Testing; Ultrafast optics;
Journal_Title :
Dielectrics and Electrical Insulation, IEEE Transactions on
