Electrical insulator with optical fibres and manufacturing process

摘要

The tube (1) has a helix shaped groove running along it, with vertical groove input sections. A fibre-optic cable is wound inside the groove, which is filled with an isolating silicon material. The cables run through a hole in the back of ferrule caps (2,3) which are placed at either end of the tube. There is an outer covering of isolating material which has regular extensions on it, forming inverted Ts. The end portion is left circular to allow the ferrule cap to slide into place.