Title :
Characterization of field-aged 400 kV silicone rubber composite insulators
Author :
Xiong, Y. ; Rowland, S.M. ; Robertson, J. ; Hoffmann, S.
Author_Institution :
Manchester Univ.
Abstract :
A number of silicone rubber composite insulators have been removed after 15 years of service on a coastal 400 kV transmission line in the UK. Extensive analysis of their surface degradation is provided along with a description of their appearance. Material analysis shows cracking and oxidation of the surface. Ageing effects were far from uniform over each shed, the greatest oxidation being on the top surfaces of the sheds on the south side. Microscopy, EDX and FTIR were found to be the most useful and effective tools for analysis of these polymeric insulators.
Keywords :
ageing; composite insulators; cracks; fracture; oxidation; polymer insulators; silicone rubber; 400 kV; EDX; FTIR; ageing effects; polymeric insulators; silicone rubber composite insulators; surface cracking; surface degradation; surface oxidation; transmission line; Aging; Degradation; Insulation; Microscopy; Oxidation; Polymers; Rubber; Sea measurements; Surface cracks; Transmission lines;
Conference_Titel :
Electrical Insulation and Dielectric Phenomena, 2006 IEEE Conference on
Conference_Location :
Kansas City, MO
Print_ISBN :
1-4244-0547-5
Electronic_ISBN :
1-4244-0547-5
DOI :
10.1109/CEIDP.2006.311958
