IEEE Std 1594-2020 pdf download – IEEE Standard for Helically-Applied Fiber Optc Cable Systems (WRAP) for Use on Overhead Utlity Lines

02-24-2022 comment

IEEE Std 1594-2020 pdf download – IEEE Standard for Helically-Applied Fiber Optc Cable Systems (WRAP) for Use on Overhead Utlity Lines.
4. Description of WRAP cable and component The WRAP cable shall consist of coated glass optical fibers contained in a protective dielectric fiber optic unit, surrounded by a UV resistant jacket. The cable shall not contain metallic components. The cable shall meet the design requirements under all installation conditions, operating temperatures, and ground wire environmental loadings. 5. Component requirements 5.1 Support systems Support systems for the cable itself are not required. The ground wire, phase wire, or other messenger in overhead power facilities around which the cable is wrapped provides all the support for the composite system and eliminates the need for the cable to be self-supporting. 5.2 Fiber optic cable core The fiber optic cable core shall be made of coated glass optical fibers housed to protect them from mechanical, environmental, and electrical stresses. Materials used within the core shall be compatible with one another, shall not degrade under the electrical stresses to which they may be exposed, and shall not evolve hydrogen sufficient to degrade optical performance of fibers within the cable. 5.2.1 Fiber strain allowance The fiber optic cable core shall be designed so that the fibers remain tensile stress-free under the maximum working elongation of the cable being wrapped on, and taking into consideration strains created during the installation. 5.2.2 Central structural element If a central structural element is necessary, it shall be of reinforced plastic, epoxiglass, or other dielectric material. If required, this element shall provide the necessary tensile strength to limit axial strain on the fibers and minimize fiber buckling due to cable contraction at low temperatures.
5.2.3 Bufer tube flling compound Loose buffer tubes shall be filled with a suitable compound compatible with the tubing material, fiber coating, and coloring to protect the optical fibers and prevent moisture ingress. 5.2.4 Cable core flling/fooding compound The design of the cable shall include a suitable filling/flooding compound or water-swellable material in the interstices to prohibit water migration along the fiber optic cable core. The filling/flooding compound or water-swellable compound shall be compatible with all components with which it may come in contact. 5.2.5 Binder/tape A binder yarn(s) and/or layer(s) of overlapping non-hydroscopic tape(s) may be used to hold the cable core elements in place during application of the jacket.

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