IEEE Std 1222 pdf free download

IEEE Std 1222 pdf free download.Testing and Performance for All-Dielectric Self- Supporting (ADSS) Fiber Optic Cable for Use on Electric Utility Power Lines.
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 will generally be 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 this subclause.
4.2.2 Central strength element
If a central strength 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 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 intcrsticcs 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(s) and/or a layer(s) of overlapping non-hygroscopic tape(s) may be used to hold the cable core elements in place during application of the jacket.
4.2.6 Inner jacket
A protective inner jacket or jackets of a suitable material may be applied over the fiber optic cable core, isolating the cable core from any external strength elements and the cable outer jacket.
4.3 Optical fibers
Single-mode fibers such as dispersion-unshifted, dispersion-shifted, or non-zero dispersion shifted: and multimode fibers with 50/125 im or 62.5/125 urn core/clad diameters are considered in this standard.
All single-mode fibers shall meet the requirements of IEC 6O7932_5O.6 All multirnode fibers shall meet the requirements of IEC 60793-2-10. The core and the cladding shall consist of all glass that is predominantly silica (Si02). The coating is usually made from one or more materials, such as acrylate. and shall protect the fiber during manufacture, handling, and operation.
4.4 Buffer construction
The individually coated optical fiber(s) or fiber ribbon(s) may be surrounded by a tube for protection from physical damage during fabrication. installation, and operation of the ADSS cable. Loose butler construction is a typical type of protection that may be used to isolate the fibers. The fiber coating shall be strippable for splicing and termination.
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 tbr ideniiting individual optical fibers and groups ot optical libers. Ihe colors shall be in accordance with EIA’TIA-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.IEEE Std 1222 pdf download.