Installation method of optical fiber composite electric power cable and cable structure therefor
View Patent ↗Disclosed is installation of an optical fiber composite electric power cable. An installation method of an optical fiber composite electric power cable includes installing an electric power cable including a conductor and an air-blown installation tube therein at an installation region; connecting tubes of adjacent electric power cables to each other, in an electric power cable connection box; and installing an optical fiber unit into the connected tubes by air pressure. Also, a cable structure used for installing the optical fiber composite electric power cable includes a conductor for electric power transmission; an insulator surrounding the conductor; an air-blown installation tube provided outside of the insulator; and a corrosion-protective layer provided to an outermost layer of the cable.
1. A cable structure used for installing an optical fiber composite electric power cable, comprising: a conductor for electric power transmission; an insulator surrounding the conductor; an air-blown installation tube provided outside of the insulator; a corrosion-protective layer provided to an outermost layer of the cable; and tube protecting bodies contacting with both sides of the air-blown installation tube, wherein the tube protecting bodies are made of material having lower strength than the air-blown installation tube.
2. The cable structure according to claim 1 ,
wherein the air-blown installation tube is spirally wound along a length direction of the electric power cable.
3. The cable structure according to claim 1 ,
wherein the tube protecting bodies are made of paper or plastic.
4. The cable structure according to claim 1 , further comprising a wire shield disposed at regular intervals in the same layer as the air-blown installation tube.