Double Sheath Kevlar Yarn Reinforced ADSS Fiber Optic Cable
Description
The ADSS (All-Dielectric Self-Supporting) cable is designed with a loose tube stranding structure to ensure
optimal performance and durability. The fibers are securely housed in high modulus plastic tubes filled with
a water-resistant compound, effectively protecting them from moisture. These tubes, along with fillers, are
stranded around a central strength member made of non-metallic FRP (Fiber Reinforced Plastic), forming
a compact and circular cable core.
To further enhance protection, the core is filled with a filling compound and encased in a thin polyethylene
(PE) inner sheath. For additional reinforcement, a stranded layer of aramid yarns is applied over this inner
sheath. Finally, the cable is finished with an outer sheath, which can be either polyethylene (PE) for
standard applications or anti-tracking (AT) for environments with high electrical stress.
This robust construction ensures that the ADSS cable is highly durable, moisture-resistant, and capable of
withstanding various environmental conditions. This makes it ideal for both aerial and underground installations,
providing reliable performance in a range of applications.
Application
1. The ADSS cable design considers the real-time conditions of overhead power lines, ensuring optimal
performance and durability in such environments.
2. A PE outer sheath is used for power lines below 110kV, while an AT outer sheath is employed
for power lines operating at 110kV and above to provide enhanced protection.
3. The specific design, including the quantity of aramid yarn and the stranding process, is tailored to meet
varying span requirements effectively, ensuring that the cable performs reliably across different installation
scenarios.
Characteristics
1. Enables installation without the need for a power shutdown, minimizing service disruptions during
deployment.
2. Lightweight and compact diameter reduce strain from ice, wind, tower, and backprop loads, thereby
enhancing the cable's durability and overall performance.
3. Engineered for a 30-year lifespan, ensuring long-term reliability and cost-effectiveness in infrastructure
projects.
4. Demonstrates robust tensile strength and temperature resilience, guaranteeing consistent performance
across diverse environmental conditions.
Cable construction details
| Number of fiber | 24-144 core |
| Filling rope | 2.0mm |
| Moisture Barrier | Water blocking system |
| Central strength member | material | FRP/FRP with PE |
| size | 2.1mm |
| Tube-filling | Tube filling compound |
| filler | PP tube/ PVC tube |
| Inner sheath | material | PE |
| Loose tube | material | PBT |
| diameter | Ф2.2mm(outer/inner) |
| Outer sheath | material | PE/HDPE |
| diameter | 11±0.2mm |
Fiber color
| Number of fiber 8 cores per tube | 1 | 2 | 3 | 4 | 5 | 6 |
| Blue | Orange | Green | Brown | Grey | White |
| 7 | 8 | 9 | 10 | 11 | 12 |
| Red | Black | Yellow | Violet | Pink | Aqua |
| Color 13~24 will be marked with a black tracer. For black color no need marked black tracer, will use nature color instead. |
Cable Mechanical characteristic
| core | Cable diameter | Weight |
| 2 core to 60core | 12±0.2mm | 140±3kg/km |
| 72core | 13±0.2mm | 190±3kg/km |
| 96core | 14.5±0.2mm | 220±3kg/km |
| 144core | 16.5±0.2mm | 240±3kg/km |
| Rec.daily max working tension | 88kN |
| Max. Allowable working tension | 32.7KN |
| Modulus of elasticity | 37KN/mm2 |
| Min Bending Radius(mm) | Operation | 240mm |
| Installation | 390mm |
| Extra load | Extra load 0.5% ~ 0.7% |
| Ice | 5mm |
| Wind speed | 35m/s |
Fiber characteristic
| Fiber style | Unit | SM
G652 | SM
G652D | MM
50/125 | MM
62.5/125 | MM
OM3-300 |
| condition | nm | 1310/1550 | 1310/1550 | 850/1300 | 850/1300 | 850/1300 |
| attenuation | dB/km | ≤ | ≤ | ≤ | ≤3.0/1.0 | ≤3.0/1.0 |
| 0.36/0.23 | 0.34/0.22 | 3.0/1.0 | ---- | ---- |
| Dispresion | 1550nm | Ps/(nm*km) | ---- | ≤18 | ---- | ---- | Dispresion |
| 1625nm | Ps/(nm*km) | ---- | ≤22 | ---- | ---- | |
| Bandwith | 850nm | MHZ.KM | ---- | ---- | ≧400 | ≧160 | Bandwith |
| 1300nm | MHZ.KM | ---- | ---- | ≧800 | ≧500 | |
| Zero dispersion wavelength | nm | 1300-1324 | ≧1302,
≤1322 | ---- | ---- | ≧ 1295,
≤1320 |
| Zero dispresion slope | nm | ≤0.092 | ≤0.091 | ---- | ---- | ---- |
| PMD Maximum Individual Fibr | | ≤0.2 | ≤0.2 | ---- | ---- | ≤0.11 |
| PMD Design Link Value | Ps(nm2*k
m) | ≤0.12 | ≤0.08 | ---- | ---- | ---- |
| Fibre cutoff wavelength λc | nm | ≧ 1180,
≤1330 | ≧1180,
≤1330 | ---- | ---- | ---- |
Cable sutoff
wavelength λcc | nm | ≤1260 | ≤1260 | ---- | ---- | ---- |
| MFD | 1310nm | um | 9.2±0.4 | 9.2±0.4 | ---- | ---- | ---- |
| 1550nm | um | 10.4±0.8 | 10.4±0.8 | ---- | ---- | ---- |
Numerical
Aperture(NA) | | ---- | ---- | 0.200±0.015 | 0.275±0.
015 | 0.200±0
.015 |
Step(mean of bidirectional
measurement) | dB | ≤0.05 | ≤0.05 | ≤0.10 | ≤0.10 | ≤0.10 |
Irregularities over fiber
length and point | dB | ≤0.05 | ≤0.05 | ≤0.10 | ≤0.10 | ≤0.10 |
| Dicontinuity |
Difference backscatter
coefficient | dB/km | ≤0.05 | ≤0.03 | ≤0.08 | ≤0.10 | ≤0.08 |
| Attenuation uniformity | dB/km | ≤0.01 | ≤0.01 | | | |
| Core dimater | um | | | 50±1.0 | 62.5±2.5 | 50±1.0 |
| Cladding diameter | um | 125.0±0.1 | 125.0±0.1 | 125.0±0.1 | 125.0±0.1 | 125.0±0.1 |
| Cladding non-circularity | % | ≤1.0 | ≤1.0 | ≤1.0 | ≤1.0 | ≤1.0 |
| Coating diameter | um | 242±7 | 242±7 | 242±7 | 242±7 | 242±7 |
Coating/chaffinch
concentrically error | um | ≤12.0 | ≤12.0 | ≤12.0 | ≤12.0 | ≤12.0 |
| Coating non circularity | % | ≤6.0 | ≤6.0 | ≤6.0 | ≤6.0 | ≤6.0 |
| Core/cladding conentricity error | um | ≤0.6 | ≤0.6 | ≤1.5 | ≤1.5 | ≤1.5 |
| Curl(radius) | um | ≤4 | ≤4 | ---- | ---- | ---- |
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