DOUBLE DOWN CONDUCTOR SYSTEM, SYSTEM FOR DETERMINING LIGHTING USING DOUBLE DOWN CONDUCTOR SYSTEM, SYSTEM FOR EVALUATING SOUNDNESS FOR DOUBLE DOWN CONDUCTOR SYSTEM AND WIND POWER GENERATING SYSTEM

摘要

PROBLEM TO BE SOLVED: To determine separately a lightning normally striking a receptor from a lightning abnormally striking a down conductor or the like.SOLUTION: A double down conductor system includes: a conductive receptor 18 provided at a tip of a windmill blade 36; two down conductors 20 connected to the receptor 18 to lead a thunderbolt current temporarily generated by a lightning strike to a grounding part; and insulation means insulating the two down conductors 20 from each other and including an integrally molded insulator 28.SELECTED DRAWING: Figure 1