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000000268 037__ $$aENY-ARTICLE-2008-214
000000268 041__ $$aeng
000000268 100__ $$aFeser, K$$uUniversity of Stuttgart, Germany
000000268 245__ $$aBehaviour of Zinc Oxide Surge Arresters Under Pollution
000000268 260__ $$c1990-02-01
000000268 300__ $$a8p
000000268 500__ $$aIEEE Transactions on Power Delivery Vol. 6, No. 2, April 1991, pp. 688-695.
000000268 520__ $$aThis paper presents results of pollution  tests with A.C. voltages which were carried out with a multi - unit zinc oxide arrester . The interaction between the polluted porcelain housing and the inner varistor column due to capacitive coupling has been found to be responsible for the temperature rise of varistor elements. The different voltage distribution between inside and outside of the arrester also causes a high  radial electric field which can lead to internal discharges if the radial insulation system is not properly designed. These internal discharges may damage varistor elements which are not adequately coated and may cause a total destruction of the arrester . The shape of the internal and external currents due to discharges is analysed. A test method to compare different arrester constructions under severe pollution is proposed. The method can also be applied to demonstrate the absence of discharges for a certain arrester design under extreme conditions of pollution during type tests .
000000268 6531_ $$apollution testing
000000268 6531_ $$ametal oxide arrester
000000268 6531_ $$ainternal discharges
000000268 6531_ $$asimulation model
000000268 700__ $$aKohler, W$$uUniversity of Stuttgart, Germany
000000268 700__ $$aQiu, D$$uUniversity of Stuttgart, Germany
000000268 700__ $$aChrzan, K L$$uWroclaw University of Technology, Poland
000000268 8560_ $$
000000268 8564_ $$u$$zAccess to Fulltext
000000268 909CO $$$$pglobal
000000268 980__ $$aARTICLE