Used for laying in the ground, including swamps and shallow non-navigable rivers, cabling in cable ducts, pipes, trays, tunnels, collectors, over bridges and overpasses, between buildings, and inside buildings. Design 
The cable contains a central optical module with loosely laid fibers. The free space in the optical module is filled with a hydrophobic gel. Steel wire armor is spirally covered over the central optical module. The free space between the wires is filled with a hydrophobic gel. The armor is covered with a jacket made a flame retardant, halogen free, low smoke emission, resistant to UV radiation polymer composition. Color identification of buffered optical fibers | № | Fibers 1-12 | № | Fibers 13-24 | | 1 | Blue | 13 | Blue + 1 ring | | 2 | Orange | 14 | Orange + 1 ring | | 3 | Green | 15 | Green + 1 ring | | 4 | Brown | 16 | Brown + 1 ring | | 5 | Grey | 17 | Grey + 1 ring | | 6 | White | 18 | White + 1 ring | | 7 | Red | 19 | Red + 1 ring | | 8 | Black | 20 | Black + 1 ring | | 9 | Yellow | 21 | Yellow + 1 ring | | 10 | Violet | 22 | Violet + 1 ring | | 11 | Pink | 23 | Pink + 1 ring | | 12 | Turquoise | 24 | Turquoise + 1 ring | Cables are classified into 2 types according to maximum pulling tension (type 1 – 2.7 kN; type 2 - 7 kN) Weight and Dimensions Fiber count in the cable | Up to 16 | Up to 24 | | Cable with maximum pulling tension - 7 kN | Cable diameter, mm | 9,5 | 9,7 | Cable weight, kg/km | 180,9 | 183,8 | | Cable with maximum pulling tension – 2.7 kN | Cable diameter, mm | 8,0 | 8,3 | Cable weight, kg/km | 110,5 | 118,8 | Operating conditions Operating Temperature | -50°С…+70°С | Installation Temperature | -10°С…+50°С | Storage Temperature | -50°С…+50°С | Minimum Bend Radius | At least 10 cable diameters | Lifetime | 25 years | Physical specifications Optical cable is resistant to the following impacts Impact type | Nominal value | Criteria for evaluation | | Type 1 | Type 2 | Pulling tension
(IEC 794-1-93 Е1 test procedure) | 2,7 kN | 7 kN | Δα* ≤ 0,05 dB
no damage | Crush resistance
(IEC 794-1-9З Е3 test procedure) | 0,5 kN/cm | 0,7 kN/cm | Dynamic bending stresses
(IEC 794-1-93 Е6 test procedure) | 20 cycles at an angle ±90° | Axial twisting stresses
(IEC 794-1-93 Е7 test procedure) | 10 cycles at an angle of ± 360°
at a length of 4 m | Impact (IEC 794-1-93 Е4 test procedure) | Impact energy is 20 J | Water resistance
(IEC 60794-1-2 para. 25, F5B test procedure) | Sample length: 3m
Duration: 24 hours | No water at the end
of the sample | Climatic impact
low and high temperature resistance
(IEC 794-1-93 F1 test procedure) | - temperature range
from minus 50 to 70 °С | | | - 2 cycles | | - cycle duration ≥ 16 hours | Climatic impact
- precipitation (GOST 20.57.406, 218-1 test procedure) | - 2 hours | No cracks or other damage | - salt fog
(GOST 20.57.406, 215-1 test procedure) | - 2 days | - dew and frost
(GOST 20.57.406, 206-1 test procedure) | - 2 hours | - solar radiation
(GOST 20.57.406, 211-1 test procedure) | - 5 days | Dripping of hydrophobic compound
(IEC 60794-1-2 E14 test procedure) | at 70 °С | No dripping | Voltage test
(GOST 2990-78) | AC Voltage 10 kV, 50 Hz | No breakdown | Pulse spreading current
(К.25 МСЭ-Т) | - duration 60 μs
- amplitude105 kA | Δα* ≤ 0,05 dB
no damage | * - increase in attenuation of an optical fiber in a cable at specific wavelengths. Applicable optical fibers SU | Single-mode fiber with extended operating wavelength and reduced attenuation and low bending loss (ITU G.652D+G.657.A1 recommendation) | S2 | Single-mode fiber with an extended bandwidth of operating wavelengths (ITU-T G.652D recommendation) | S5 | Single-mode positive non-zero dispersion shifted fiber (ITU-T G.655 recommendation) | S7 | Single-mode with low bending loss (ITU-T G.657 recommendation) | M1 | Multi-mode with core to cladding ratio 62,5/125 μm (IEC 60793-2-10 A1b type recommendation) | M2 | Multi-mode with core to cladding ratio 50/125 μm (ITU-T G.651 recommendation and IEC 60793-2-10 type A1a.1 requirements) | M3 | Multi-mode with low bending loss and core to cladding ratio 50/125 μm (ITU-T G.651 recommendation and IEC 60793-2-10 A1a.2 type requirements) | M4 | Multi-mode with low bending loss and core to cladding ratio 50/125 μm (ITU-T G.651 recommendation and IEC 60793-2-10 A1a.3 type requirements) | |
