Trapped charge effects on the transient response of surge arresters

P. Naylor*, A. Haddad, I. A. Metwally, Y. K. Tong, D. M. German, R. T. Waters

*Corresponding author for this work

Research output: Contribution to conferencePaperpeer-review


A surge arrester connected to a laboratory analogue of an isolated distribution line or cable with trapped charge has been tested for its performance against lightning surges. The line/cable system has been substituted by an equivalent capacitance which has been previously charged from a direct-voltage source. A single-stage capacitor bank is triggered to provide a lightning impulse test current. Both the discharge current and the residual voltage across the arrester were measured. Such tests have been performed upon different metal-oxide arresters of the same rating. Variable results were found. In some cases the residual voltage at peak current was found to be significantly influenced by the pre-conditioning caused by trapped charge.

Original languageEnglish
Number of pages4
Publication statusPublished - 1994
Externally publishedYes
EventProceedings of the 29th Universities Power Engineering Conference. Part 2 (of 2) - Galway, Irel
Duration: Sep 14 1994Sep 16 1994


OtherProceedings of the 29th Universities Power Engineering Conference. Part 2 (of 2)
CityGalway, Irel

ASJC Scopus subject areas

  • Engineering(all)

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