Abstract
The composite material crossarm has excellent insulation, water repellency, light weight and high strength, which can effectively improve the safety level of the power line. Research results showed that the dry flash lightning voltage and wet flash frequency voltage of the composite crossarms were increased by 50% and 39% respectively, compared to the angle steel crossarms fixed with the same size insulator and the same air gap; corresponding wet frequency withstand voltage and filthy resistance voltage were increased by 117% and 30%, respectively; and the wet and filthy flashover all occurred on the surface of the composite material crossarms.
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