DESIGN
1. Central strength member – fibreglass plastic rod or steel rope
2. Modules with optical fibres produced by Fujikura, Corning, Draka
3. Hydrophobic filling in modules and between modules and sheath
4. Intermediate sheath from polyethylene
5. Armour from circular steel corrugated wires
6. Jacket from polyethylene
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SERVICE AND ASSEMBLY CONDITIONS
1. Operating temperature range - from -40°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 - 25 years
5. The cables are resistant to mold fungi, dew, rain, frost, salt fog, solar radiation, and damage by rodents
6. The cable is supplied on wooden drums in compliance with State Standard 18690
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SPECIFICATION
1. Outside diameter of the cable (depending on design), -13;7- 17,6 (mm)
2. Nominal weight (depending on design) - 319 - 351 (kg/km)
3. The cable is tensile stress resistant, - from 4,0 to 20,0 (kN)
4. Attenuation constant, on 1550 nm wavelength - 0,21 dB/km
5. Number of fibres in a module - from 4 to 16
6. Total number of fibres - from 4 to 144
7. Electrical resistance of outside sheath (armour - ground) not less than 2000 MOhm/km
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MARKING CABLE WHEN ORDERING
OMZKGM-10-01-0,22-4...144 (7,0) optical long-distance intraareal cable:
O-for optical, M-for long-distance, Z-for areal, K-for duct, G-for ground,
M-for multimodule, 10-diameter of mode field, 01-central strength member from fibreglass plastic, 0,22-attenuation constant, 4...144-number of fibres, 7,0-admissible tensile stress.
OMZKGMN-10-01-0,22-4...144 (7,0) cables in non-combustible design, sheath from a material not spreading combustion.
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