Title :
Light emission in XLPE subjected to HV in high vacuum and pressurized gas
Author :
Bamji, S.S. ; Bulinski, A.T. ; Powell, I. ; Shimizu, N.
Author_Institution :
Nat. Res. Council of Canada, Ottawa, Ont., Canada
fDate :
4/1/2001 12:00:00 AM
Abstract :
The spectral and spatial resolution of electroluminescence, the light emitted from polymeric insulation subjected to high electric field, is studied in a test cell pressurized to 215 kPa with ultra high purity nitrogen gas. The paper also describes light emission from crosslinked polyethylene (XLPE) subjected to HV in an ultra high vacuum test cell. It is shown that the characteristics of light emitted from XLPE in the evacuated test cell are quite different from the light emitted when the test cell is pressurized. The mechanisms responsible for light emission under high vacuum condition are described and it is suggested that care should be taken when interpreting the light detected from polymeric insulation subjected to high electric fields
Keywords :
XLPE insulation; electroluminescence; insulation testing; 0 to 215 kPa; XLPE; electroluminescence; evacuated test cell; high vacuum; polymeric insulation; pressurized gas; ultra high purity nitrogen gas; Degradation; Dielectrics and electrical insulation; Gas insulation; Plastic insulation; Polymers; Spatial resolution; Stress; Testing; Trees - insulation; Voltage;
Journal_Title :
Dielectrics and Electrical Insulation, IEEE Transactions on