BIRD DAMAGE PREVENTIVE DEVICE FOR SUSPENSION INSULATOR POWER TRANSMISSION LINE

摘要

PURPOSE: To prevent ground shortcircuiting caused by bird nesting material such as wire at the suspension insulator of a power transmission line by fixing an insulative shield plate to a string of suspension insulators, wherein the outside dia. of the shield plate is greater than that of the insulator, and by covering a jumper wire etc., insulatedly. ;CONSTITUTION: An insulator fitting hole 2 in an insulative shield plate 1 is fitted on the upper part 5b of the undermost insulator 5a of a string of suspension insulators 5, and thus the shield plate 1 is fixed. The outside dia. R of this plate 1 shall be greater than that of the insulator 5a, demensioning so that the periphery 3 of the plate 1 goes beyond the tips of arc horns and blocks the electric discharge gap Z1 between the tips of arc horns 6, 7 and the electric discharge gap Z2 between a discharge electrode 13 at the bottom of a lightning arrester and the tip of the arc horn 8. Accordingly eventually dangling wires etc., as a bird B nesting material is prevented from touching the live part, and occurrence of ground shortcircuiting can be preclubed. Further, a jumper wire etc., at the jumper wire insulative hangdown part is covered insulatedly, and the jumper wire exposed part is grasped by a suspension clamp, so that ground shortcircuiting can be prevented even through wires etcs. have dangled.;COPYRIGHT: (C)1993,JPO&Japio