Description
The ADSS structure of the optical cables adopts loose tube twisted structure. 250 um optical fibers are inserted into loose tube made of high modulus polyester and filled with non-metallic reinforcing members (FRP) around the center of the cable to form a round core. The gap in the core is filled with water-blocking ointment, Two layers of aramid yarn
are twisted to reinforce the yarn. Finally, polyethylene (PE) sheath is extruded.
All Dielectric Self-Supporting Cable-Single Sheath (4-144F) is a non-metallic cable which supports its own weight without the use of lashing wires or messenger cables, typically installed in overhead applications along power distribution or transmission
Features and Advantages
Non-metallic structure, good insulation, lightning protection
The aramid yarn has excellent production technology, uniform force, excellent stress-strain performance, excellent gunshot resistance and best anti-electric corrosion performance
No blackout construction, power line failure does not affect the normal transmission of optical cable
Smooth shape, so that the cable has superior aerodynamic performance
Cable structure
| Item | Contents | Unit | Value | |
| Fiber count | Number | / | 64 | 96 |
| Fiber type | / | / | G652D | |
| Cable structure | / | / | 1+8 | 1+12 |
| Fibers per tube | Count | / | 8 | |
|
Loose tube |
Material | / | PBT | |
| Nominal Diameter | mm | 2.2 | ||
| Color | / | Blue、Orange、Green、Brown、Gray、White、Red、
Black、Yellow、Violet、Pink、Aqua |
||
|
Central strength member |
Material | / | FRP &PE cushion layer | |
| Nominal Diameter | mm | 2.4/3.8 | 2.6/6.6 | |
| Water blocking | Material | / | Water blocking yarn & tape | |
| Peripheral strength member | Material | / | Aramid yarn | |
|
Inner sheath |
Material | / | MDPE | |
| Color | / | Black | ||
| Average Thickness | mm | 0.7 | ||
|
Outer sheath |
Material | / | MDPE | |
| Color | / | Black | ||
| Average Thickness | mm | 1.6 | ||
|
Attenuation (After cable) |
1310nm | dB/km | £0.36 | |
| 1550nm | dB/km | £0.22 | ||
| Cable diameter | ±5% | mm | 13.3 | 16.1 |
| Cable weight | ±7% | kg/km | 135 | 197 |
| Suitable span | / | m | 50 | |
| Sag | / | % | 1 | |
| Icing-thickness | / | mm | 0 | |
| Wind speed | / | m/s | 25 | |
Standard color of fiber and tube
The color code of the tubes and the individual fibers, shall be in accordance with the table as below:
| No. | 1 | 2 | 3 | 4 | 5 | 6 |
| Color | Blue | Orange | Green | Brown | Slate | White |
| No. | 7 | 8 | 9 | 10 | 11 | 12 |
| Color | Red | Black | Yellow | Violet | Pink | Aqua |
Mechanical & Environmental Performance
| Item | Contents | Value |
| Max. tensile load (64 core) | Max allowable tension | 2000N (fiber strain≤0.33％) |
| Max. tensile load (96 core) | Max allowable tension | 2300N (fiber strain≤0.33％) |
|
Max. crush resistance |
Short term | 2200 N/100mm |
| Long term | 700N | |
|
Min. bending radius |
Installation | 25 x cable diameter |
| Operation | 15 x cable diameter | |
|
Temperature range |
Operation | -40℃ ~ +70℃ |
| Installation | -20℃ ~ +60℃ | |
| Storage/transportation | -40℃ ~ +70℃ |
Optical fiber technical parameters-SMF
| Item | Unit | Specification | |
| G. 652D | |||
| Mode field diameter | 1310nm | mm | 9.2 ± 0.4 |
| 1550nm | mm | 10.4 ± 0.5 | |
| Cladding diameter | mm | 125.0 ± 0.7 | |
| Cladding non-circularity | % | £1.0 | |
| Core concentricity error | mm | £0.6 | |
| Coating diameter | mm | 242 ± 7 | |
| Coating/cladding concentricity error | mm | £12 | |
| Cable cut-off wavelength λcc | nm | £ 1260 | |
| Attenuation | 1310nm | dB/km | £0.35 |
| 1550nm | dB/km | £0.21 | |
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