Abstract
This paper presents the results of a study of the critical flashover (CFO) voltage of fiberglass distribution line poles, polymer crossarms and insulators with fiberglass poles and polymer crossarms. Special attention was made to evaluate the added CFO voltage by the fiberglass pole and the polymer crossarm with the insulators in the distribution line pole structure. A discussion of the results follows the data obtained. For composite distribution line insulation, a comparison of the CFO and added CFO voltages by the fiberglass distribution line poles and the polymer crossarm with the wood pole and the wood crossarm is presented. The tests were conducted in the High Voltage Laboratory at Mississippi State University.
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