Flashover Tests on Dust-Containacted Insulators
- 1 January 1972
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Transactions on Power Apparatus and Systems
- Vol. PAS-91 (1) , 328-335
- https://doi.org/10.1109/TPAS.1972.293367
Abstract
This paper decribes a high voltage laboratory testIng program of artificially dust-contaminated cap and pin insulators. Several factors are found to influence the flashover characteristics including : the method of voltage applications the rate of wetting of the contaminated insulators, and the duration of the high voltage test. The 50% o flashover voltage is found to be proportional to the number of insulator units per string while the relative dispersion decreases considerably for longer strings, Within the range investitated. Flashover characteristics of artificially and naturally contaminated insulators are compared. Due consideration is given to the statistical nature of the problem which determines the volume of the tests involved. Flashover values are shown to belong to a population characterized by a gaussian distribution and a procedure for optimizing the number of necessary tests is developed.Keywords
This publication has 3 references indexed in Scilit:
- Application of dimensional analysis to flashover characteristics of polluted insulatorsProceedings of the Institution of Electrical Engineers, 1970
- Tests on Salt-Contaminated Insulators in Artificial and Natural Wet ConditionsIEEE Transactions on Power Apparatus and Systems, 1969
- Field and Laboratory Tests of Contaminated Insulators for the Design of the State Electricity Commission of Victoria's 500-kY SystemIEEE Transactions on Power Apparatus and Systems, 1968