DESIGN

1. Peripheral strength member – steel rope
2. Modules with optical fibres
3. Hydrophobic filling in modules and between modules and sheath
4. Optical fibres produced by Fujikura, Corning, Draka
5. Central strength member – fibreglass plastic rod
6. Jacket from polyethylene

SERVICE AND ASSEMBLY CONDITIONS

1. Operating temperature range – from -60°C to 70°C
2. The cables are designed for mechanized and manual installation at a temperature not lower than -10°C
3. Admissible bending radius during assembly not less than 20 nominal cable diameters during operation and not less than 250 mm during installation and assembly
4. The cables’ service life, not less than – 25 years
5. The cables are resistant to mold fungi, dew, rain, frost, salt fog, solar radiation

SPECIFICATION

1. Outside diameter of the cable (depending on design), - 11,3 – 12,1 (mm)
2. N ominal weight (depending on design) – 193– 203 kg/km
3. The cable is tensile stress resistant from 9,0 to 20 kN
4. The cable is crushing stress resistant, not less than – 400 N/cm
5. Attenuation constant, dB/km on 1550 nm wavelength, 0,21
6. Total number of fibres – from 4 to 144

MARKING CABLE WHEN ORDERING

OKSNMt-10-01-0,22-4...144 (9,0) optical city cable: OK-for optical, S-for selfsupporting, N-for non-metallic, M-for multimodule, 10-diameter of mode field, 01- central strength member from fibreglass plastic, 0,22-attenuation constant in dB/km on 1550 nm wavelength, 4...144-number of fibres, 9,0-admissible tensile stress in kN.

REGULATIONS

TU 16.К87-001-00