Internal arcing test results of gapped SiC arresters are presented. During a test in which the attester is exposed to internal arcing, the positive impulse breakdown voltage increases. Measurements made with a model arrangement indicate that the increase in the electrical strength of gas is higher for positive than for negative impulse polarity. When the internal discharges extinguish, recovery processes occur. Additional phenomena that can cause changes in the electrical strength are discussed.
|Original language||English (US)|
|Number of pages||5|
|Journal||IEEE Transactions on Dielectrics and Electrical Insulation|
|State||Published - Aug 2001|
ASJC Scopus subject areas
- Electrical and Electronic Engineering