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The Cold Fog Test
- Source :
- IEEE Power Engineering Review. 16:59-59
- Publication Year :
- 1996
- Publisher :
- Institute of Electrical and Electronics Engineers (IEEE), 1996.
-
Abstract
- The electrical performance of outdoor insulation degrades severely during combinations of factors that include surface contamination (C), ice (I), fog (F) and an ambient temperature that rises through 0 C (T{sub 0{degree}}). Failures at operating voltage on 115-kV, 230-kV and 500-kV systems occur with increasing probability under these conditions. A new CFT{sub 0{degree}} or cold-fog test method has been developed to reproduce the flashovers at all three voltage levels. Three options are identified for improving CFT{sub 0{degree}} performance: use of semi-conductive glazes, substitution of silicone for porcelain and use of silicone coatings on existing porcelain insulators.
Details
- ISSN :
- 02721724
- Volume :
- 16
- Database :
- OpenAIRE
- Journal :
- IEEE Power Engineering Review
- Accession number :
- edsair.doi...........6a10200e918de1aa992f62861fb6b64b