High-Performance Double Sheath ADSS Fiber Optic Cable
Description
The ADSS optical fiber cable structure employs a loose tube layer stranded design, housing 250µm fibers
within a high modulus material-filled tube, effectively waterproofed. This setup, along with a non-metallic
central reinforcing core (FRP), creates a compact cable core, further fortified by water blocking ointment to
fill any gaps. An inner polyethylene (PE) sheath is extruded over the cable core, reinforced with aramid for
strength, and finally enclosed in a polyethylene (PE) or AT outer sheath. This design is adaptable for various
high-voltage transmission lines. For 10kV and 35kV power lines, PE sheathing suffices; however, for 110kV
and 220kV lines, calculations of electric field distribution dictate hanging point placements, necessitating an
AT outer sheath. The aramid fiber quantity and stranding process are finely tuned to meet different span re-
quirements.
Application
1 ADSS cable design tailored to overhead power line conditions.
2 PE outer sheath for lines below 110kV; AT sheath for 110kV+ lines.
3 Aramid quantity and stranding designed for various span demands.
4 Strategic considerations for optimal cable performance.
Characteristics
1 Live installation capability without power shutdown.
2 Lightweight and compact design to minimize ice and wind load.
3 Longevity: designed for a 30-year lifespan.
4 High tensile strength and temperature performance.
Nominal design parameters
NO. of fibers | 6 | 12 | 24 | 48 | 72 | 96 | 144 |
No. of tubes | 1 | 2 | 4 | 4 | 6 | 8 | 12 |
Filler rod | 5 | 4 | 2 | 2 | 0 | 0 | 0 |
fibers per tube | 6 | 6 | 6 | 12 | 12 | 12 | 12 |
Nom. tube diameter (±0.2mm) | 2 | 2 | 2.0 | 2.0 | 2.0 | 2.0 | 2.0 |
Nom. diameter (±0.5mm) | 12.3 | 12.3 | 12.3 | 12.3 | 12.3 | 13.0 | 15.0 |
Loose tube | Material | PBT | Color | Standard spectrum | |||
Filler rod | Material | PP | Color | Black | |||
Maximum tensile strength | 4000N | ||||||
Maximum crush load | 3000N/100mm | ||||||
Minimun bending radius | 10D | ||||||
Span length | 100m - 500m | ||||||
Out sheath material | PE | ||||||
Temperature range | -20℃ ~ 70℃ |
Fiber characteristics
Fiber type | Unit | SM G652D | MM 50/125 | MM 62.5/125 | |||
Condition | mm | 1310/1550 | 850/1300 | 850/1300 | |||
Attenuation | dB/km | ≤0.36/0.24 | ≤3.0/1.5 | ≤3.0/1.5 | |||
Cladding diameter | um | 125±0.5 | 125±0.5 | 125±0.5 | |||
Cladding non-circularity | % | ≤1.0 | ≤1.0 | ≤1.0 | |||
Coating diameter | um | 242±6 | 242±6 | 242±6 |