Title :
Observation of AC surface discharge on insulating film by Pockels effect
Author :
Kawasaki, T. ; Terashima, Tomohide ; Suzuki, S. ; Takada, T.
Author_Institution :
Musashi Inst. of Technol., Tokyo, Japan
Abstract :
In order to design the insulation of high-voltage equipment, it is necessary to develop a measurement method for understanding the time dependence of AC (50 Hz) surface discharge on an insulating material. The authors have developed a method by which one can obtain the surface charge pattern and density by means of an electrooptic Pockels effect in BSO (Bi12SiO20) crystal. They have improved the optical system to obtain the time dependence of the AC (50 Hz) surface discharge pattern and density on an insulating film. The observed AC charge distribution on a PET film surface is reported. The relationship between needle-film gap size and residual surface charge pattern is discussed
Keywords :
Pockels effect; insulation testing; organic insulating materials; polymer films; surface discharges; AC surface discharge; BSO; Bi12SiO20; PET film surface; Pockels effect; density; high-voltage equipment; insulating film; insulation; needle-film gap size; residual surface charge pattern; surface charge pattern; time dependence; Cameras; Electrodes; High speed optical techniques; Insulation; Needles; Optical films; Positron emission tomography; Surface discharges; Time measurement; Voltage;
Conference_Titel :
Electrical Insulation and Dielectric Phenomena, 1992. Annual Report. Conference on
Conference_Location :
Victoria, BC
Print_ISBN :
0-7803-0565-5
DOI :
10.1109/CEIDP.1992.283218
