Fiber optic cable incorporated in ground wire OKGT-c for suspension on overhead power line support with voltage 110 kV and higher.
Сable is designed for suspension on overhead power line support with voltage 110 kV and higher. It performs two functions: to transmit information and to protect the phase conductors from a lightning strike, which may damage the transmission system. This design op OKGT-c cable is used in areas with high corrosion activity.
An optical ground wire with aluminum alloy wires and/or aluminum clad steel wires stranded over a jelly-filled optical unit. There are one or more layers of armoring wires. The first layer is replaced by a layer of aluminum applied to a steel tube. There are one or more layers of armoring wires. In case the number of fibers exceeds 12 ring marking is used and/or bundling with identification yarns.
|Number of optical fibers||2-24||24-48|
|Number of optical fibers in a bundle||up to 12||up to 12|
|Nominal overall diameter,mm||from 9,2||from 10,8|
|Mass of cable,kg/km||from 210||from 298|
|Temperature range of operation||-60°С… +85°С|
|Minimal temperature of installation||-30°С|
|Minimal bending radius||not less than 20 diameters|
|Guarantee exploitation||2 years after putting in operation, not more than 2,5 years from shipping date.|
|Tensile strength||from 33 kN to 484 kN|
|Crush strength||not less than 10 kN/100 mm|