Center SS Tube OPGW Cable G652D Composite Overhead Optical Ground Wire Cable
Center SS Tube OPGW Composite Overhead Ground Wire≤0.05dB Attenuation Non Uniformity
Technical Specifications for Optical Fiber Cable
Optical Fiber Characteristics
The optical, geometrical, mechanical and environment characteristics of the ITU-T G.652.D optical fiber shall be accordance with below table:
| Characteristics | Specified Values | Units | ||
| Optical Characteristics | ||||
| Mode field diameter | at 1310nm | 9.1±0.5 | µm | |
| at 1550nm | 10.3 ± 0.7 | mm | ||
| Attenuation coefficient | at 1310nm | ≤0.36 | dB/km | |
| at 1550nm | ≤0.23 | dB/km | ||
| Attenuation non-uniformity | ≤0.05 | dB | ||
| Zero dispersion wavelength ( λ0) | 1300 ～1324 | nm | ||
| Max zero dispersion slope (S0max) | ≤0.092 | ps/(nm2·km) | ||
| Polarization mode dispersion coefficient(PMDQ) | ≤0.2 | |||
| Cut-off wavelength (λcc) | ≤1260 | nm | ||
| Dispersion coefficient | 1288～1339nm | ≤3.5 | ps/(nm·km) | |
| 1550nm | ≤18 | ps/(nm·km) | ||
| Effective group index of refraction (Neff) | at 1310nm | 1.466 | － | |
| at 1550nm | 1.467 | － | ||
| Geometric characteristic | ||||
| Cladding diameter | 125.0±1.0 | µm | ||
| Cladding non-circularity | ≤1.0 | % | ||
| Coating diameter | 245.0±10.0 | µm | ||
| Coating-cladding concentricity error | ≤12.0 | µm | ||
| Coating non-circularity | ≤6.0 | % | ||
| Core-cladding concentricity error | ≤0.8 | µm | ||
| Cladding / coating concentricity error | ≤12.0 | µm | ||
| Mechanical characteristic | ||||
| Curling | ≥4 | m | ||
| Proof stress | ≥0.69 | GPa | ||
| Coating strip force | Average value | 1.0-5.0 | N | |
| Peak value | 1.3-8.9 | N | ||
| Macro bending loss | Ф60mm, 100 circles, at 1550nm | ≤0.05 | dB | |
| Ф32mm, 1 circles, at 1550nm | ≤0.05 | dB | ||
Cable Construction and Parameter
Overhead ground wire made of aluminum-clad steel wire (AS) and stainless steel tube containing optical fiber.
3.2Cable type: OPGW-48B1.3-190[205;185.4]
3.2.1 Cross section of OPGW
| Structure | Material | No. | Material Diameter | ||
| Fiber | G.652.D | 48 | |||
| Center | 20%AS wire | 1 | Diameter | 4.0mm | |
| Layer 1 | SUS Tube | 4 | Diameter | 4.0mm | |
| 20%AS wire | 2 | Diameter | 4.0mm | ||
| Layer 2 | 20%AS wire | 12 | Diameter | 4.0mm | |
Specification of OPGW
| Items | Technical Data | ||
| Stranded | Core, layer 1, layer 2 | ||
| Stranding direction | Outer layer is right hand | ||
| Cable diameter (Nominal) | 20.0mm | ||
| Cable Weight (Approx.) | 1365kg/km | ||
| Supporting Cross Section | AS Wire | 188.5mm2 | |
| Rated Tensile Strength (RTS) | 205kN | ||
| Modulus of Elasticity (E-Modulus) | 162.0kN/mm2 | ||
| Thermal Elongation Coefficient | 13.0×10-6/K | ||
| Maximum Working Stress (40%RTS ) | 82.0kN | ||
| Everyday Stress(EDS)(18%～25%RTS) | 36.9~51.25kN | ||
| DC Resistance at 20℃ | 0.442 ohm/km | ||
| Short time current (1.0s, 40℃～200℃) | 13.62kA | ||
| Short time current Capacity I2t | 185.4kA²s | ||
| Minimum bending radius | Installation | 30 times of cable diameter | |
| Operation | 15 times of cable diameter | ||
| Temperature Range | Installation | -10℃~+60℃ | |
| Storage & shipping | -40℃~+60℃ | ||
| Operation | -40℃~+80℃ | ||
Fiber and Loose Tube Color Identification
The individual fiber and loose tubes shall accordance with standard TIA/EIA-598-A and the color code as below.
Steel tube 1 (No.1-12 fibers) : Single mode optical fiber (SM)
Fiber Colors
| NO. | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 |
| Color | Blue | Orange | Green | Brown | Grey | White | Red | Nature | Yellow | Violet | Pink | Aqua |
Steel tube 2 (No.13-24 fibers) : Single mode optical fiber (SM)
One black tracer (50mm pitch)
| NO. | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 |
| Color | Blue | Orange | Green | Brown | Grey | White | Red | Nature | Yellow | Violet | Pink | Aqua |
Steel tube 3 (No.25-36 fibers) : Single mode optical fiber (SM)
One black tracer (100mm pitch)
| NO. | 25 | 26 | 27 | 28 | 29 | 30 | 31 | 32 | 33 | 34 | 35 | 36 |
| Color | Blue | Orange | Green | Brown | Grey | White | Red | Nature | Yellow | Violet | Pink | Aqua |
Steel tube 4 (No.37-48 fibers) : Single mode optical fiber (SM)
One black tracer (150mm pitch)
| NO. | 37 | 38 | 39 | 40 | 41 | 42 | 43 | 44 | 45 | 46 | 47 | 48 |
| Color | Blue | Orange | Green | Brown | Grey | White | Red | Nature | Yellow | Violet | Pink | Aqua |
Packing and Shipping
The OPGW shall be tightly and uniformly wound on a strong wood-iron reel which conforms to ANSI/AA 53-1981 or equal. The reel shall be lagged with stout wood-iron battens so as to prevent the OPGW from damage in ordinary shipping, handling, storage and stringing operations.
Drawing of Reel
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