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.
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. 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||50-96|
|Number of tubes||1||1||1|
|Number of optical fibers in a bundle||up to 12||up to 12||up to 24|
|Nominal overall diameter,mm||from 8,2||from 8,8||from 9,8|
|Mass of cable,kg/km||from 248||from 275||from 313|
|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|