Title :
Direct-current surface breakdown of porcelain insulators in vacuum at elevated temperatures
Author_Institution :
GEC Nelson Research Centre, Stafford, UK
Abstract :
Porcelain insulators subjected to long-term d.c. stress at temperatures in the region of 100°C have been found to suffer a deterioration in their surface vacuum breakdown strength. The letter details some preliminary investigations into this `electrolytic aging¿ effect, and, in particular, the effects of voltage reversal are described.
Keywords :
ceramics; electric breakdown; insulators; thermal effects; 100 degrees C; ceramics; direct current surface breakdown; effects of voltage reversal; electrolytic aging effect; elevated temperatures; insulators; porcelain insulators; surface breakdown; thermal effects; vacuum;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19710282
