Characteristics of Dry-Band Arcing on Fiber Ropes for Wiring Works Near Transmission Lines

Troubles related to damage of fiber ropes for wiring have sometimes occurred in case of wiring works close to energized transmission lines. Therefore, in order to establish a guideline on the treatment of fiber ropes for wiring works near transmission lines, authors implemented a damage test on the condition of high electric field, then examined the damage characteristics and mechanism. In this paper, mechanism of the dry-band arcing occurring as a result of concentration of voltage across the dry-bands, which are generated by the joule heat caused by the current induced to the wet fiber rope, is shown. In addition, the occurrence condition of the dry-band arcing acquired by the applied voltage test is described.