IEEE Std 1222-2019 pdf download
IEEE Std 1222-2019 pdf download.IEEE Standard for Testing and Performance for All-Dielectric Self-Supporting (ADSS)Fiber Optic Cable for Use on Electric Utility Power Lines.
4. ADSS cable and components
4.1 Descriptions
The ADSS cable shall consist of coated glass optical fibers grouped in one or more protective dielectric units surrounded by or attached to suitable dielectric strength members and jackets. The cable shall not contain metallic components. The cable shall be designed to meet the requirements under all specified installation conditions, operating temperatures, and environ mental loading.
4.2 Fiber optic cable core
The fiber optic cable core shall be all-dielectric and shall contain coated glass optical fibers that are protected 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 in quantities sufficient to degrade optical performance of fibers within the cable.
4.2.1 Fiber strain allowance
The cable shall be designed such that fiber strain does not exceed the limit allowed by the cable manufacturer under the operational design limits (MRCL) of the cable. Maximum allowable fiber strain is generally a function of the proof test level, and the strength and fatigue parameters of the coated glass fiber. The maximum fiber strain shall not exceed the limit specified in 6.5.1.2. The optical fiber attenuation increase while under fiber strain shall also meet the requirements listed in 6.5.1.2.
4.2.2 Central strength element
If a central strength element is necessary, it shall be of reinforced plastic, epoxy glass, or other dielectric material. If required, this element shall provide the necessary tensile strength to limit axial stress on the fibers and minimize fiber buckling due to cable contraction at low temperatures. The strength element shall also meet the stress strain fatigue requirements in 6.5.1.3.
4.2.3 Buffer tube filling compound
Loose buffer tubes shall be water-blocked with a suitable material compatible with the tubing material, fiber coating, and coloring, to protect the optical fibers and prevent moisture ingress.
4.2.4 Cable core water blocking compound
The design of the cable may include suitable water blocking materials in the interstices to prohibit water migration along the fiber optic cable core. The water blocking material shall be compatible with all components with which it may come in contact.
4.2.5 Binderltape
A binder yarn or yarns and/or a layer or layers of overlapping non-hygroscopic tape(s) may be used to hold the cable core elements in place during application of the jacket.
4.4.1 Loose buffer
Loose buffer construction shall consist of a tube that surrounds each fiber or fiber group such that the inner diameter of the tube is greater than the outside diameter of the fiber or fiber group. The interstices inside and outside the tube shall contain a water blocking material.
4.5 Color coding and performance
Color coding is essential for identifying individual optical fibers and groups of optical fibers. The colors shall be in accordance with EIAITIA-598. The original identification of fibers and units shall remain discernible throughout the design life of the cable when cleaned and prepared per manufacturer’s recommendations.
4.6 Jackets
The outer jacket shall be designed to house and protect the inner elements of the cable from damage due to moisture, sunlight, environmental, thermal, mechanical, and electrical stresses.
a) All jacket materials shall be dielectric, non-nutrient to fungus and meet the general requirements in 5.4 and 6.5.4. The jacket material may be polyethylene. The outer jacket shall contain a minimum concentration of 2.35% furnace black (carbon black) when measured in accordance with ASTM D1603 to provide ultraviolet shielding. The raw jacket material shall contain an antioxidant to provide long-term stabilization.
b) The jacket shall be extruded over the underlying element and shall be of uniform diameter to properly fit support hardware.
c) The cable jacket shall be suitable for application in electrical environments as defined in 6.5.4.
