Title :
Ultrasonic visualization of electrical trees
Author :
Watanabe, E. ; Yoshizawa, M. ; Moriya, T.
Author_Institution :
Dept. of Electr. Eng., Tokyo Metropolitan Univ., Japan
Abstract :
In this paper, we report the use of 25 MHz ultrasonic waves to visualize electrical trees formed in insulating materials. In the experiment, the electrical trees generated in polymethylpentene (`TPX´) were used to compare the structure characterized by ultrasonic waves with that by optical inspection. By scanning the transducer mechanically over the sample, the resulting structure of the tree was constructed and found to coincide with that inspected by the optical method
Keywords :
organic insulating materials; 25 MHz; TPX; electrical trees; insulating materials; mechanical transducer scanning; polymethylpentene; ultrasonic visualization; Breakdown voltage; Dielectrics and electrical insulation; Electrodes; Needles; Optical materials; Paints; Temperature; Testing; Trees - insulation; Visualization;
Conference_Titel :
Electrical Insulation and Dielectric Phenomena, 1994., IEEE 1994 Annual Report., Conference on
Conference_Location :
Arlington, TX
Print_ISBN :
0-7803-1950-8
DOI :
10.1109/CEIDP.1994.591801
