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000000345 001__ 345
000000345 037__ $$aENY-ARTICLE-2009-277
000000345 041__ $$aeng
000000345 088__ $$aISBN 978-0-620-44584-9
000000345 100__ $$aChrzan, K L$$uWroclaw University of Technology
000000345 245__ $$aLightning impulse performance of polluted medium voltage insulators
000000345 260__ $$c2009-08-10
000000345 300__ $$a6p
000000345 500__ $$aProceedings of the 16th International Symposium on High Voltage Engineering, Copyright (c) 2009 SAIEE, Innes House, Johannesburg
000000345 520__ $$aThe concentrated dry bands on many silicone rubber insulators and also on porcelain insulators were observed by means of termovision camera. The lightning impulse flashover voltage on clean and polluted traction insulators was measured. The solid layer or flow-on layer were applied. The solid layer was wetted by moisture absorption from very humid air. At the same value of ESDD the flashover voltage was smaller on insulators polluted by the solid layer. This effect is unexpected because at the same ESDD value the solid layer surface conductivity is smaller than the surface conductivity of the flow-on layer. The phenomenon could be explained by an easier and quicker arc propagation over the solid layer.
000000345 6531_ $$alightning
000000345 6531_ $$ainsulator
000000345 6531_ $$aflashover
000000345 8560_ $$fleon99@pwr.wroc.pl
000000345 8564_ $$uhttp://zet10.ipee.pwr.wroc.pl/record/345/files/$$zAccess to Fulltext
000000345 909CO $$ooai:zet10.pwr.wroc.pl:345$$pglobal
000000345 980__ $$aARTICLE