Part IOptical Fibre Cable4
Optical Fibre Cableof OMZKGM, OMZKGMN typesFunctionThe cable is designed for installation in grounds of all categories, except fordamaged by frozen deformations, in cable duct, tubes, blocks, collectors,tunnels on bridges and in mines, through shallow swamps and unnavigablerivers.Design1. Central strength member – fibreglass plastic rod or steel rope2. Modules with optical fibres produced by Fujikura, Corning, Draka3. Hydrophobic filling in modules and between modules and sheath4. Intermediate sheath from polyethylene5. Armour from circular steel corrugated wires6. Jacket from polyethyleneService and Assembly Conditions1. Operating temperature range – from -40°C to 70°C2. The cables are designed for mechanized and manual installationat a temperature not lower than -10°C3. Admissible bending radius during assembly not less than 20 nominal cablediameters during operation and not less than 250 mm during installation andassembly4. The cables’ service life – 25 years5. The cables are resistant to mold fungi, dew, rain, frost, salt fog, solarradiation, and damage by rodents6. The cable is supplied on wooden drums in compliance with State Standard18690Specification1. 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/km5. Number of fibres in a module – from 4 to 166. Total number of fibres – from 4 to 1447. Electrical resistance of outside sheath (armour – ground) not less than 2000MOhm/kmMarking cable when orderingOMZKGM-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 memberfrom 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, sheathfrom a material not spreading combustion.RegulationsTU 16.K87-001-0012345Part I1 - Central strength member2 - Optical module3 - Hydrophobic compound4 - Sheath from polyethylene5 - Steel wire6 - Jacket67895