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Address: Building 3,No.43 Lixin 9th Road,Xintang Town,Zengcheng District,Guangzhou city,Guangdong province,China
Contact name:colleen
Guangzhou Jiqian Fiber Optic Cable Co., Ltd. |
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Optical Fibre Composite Overhead Ground Wire Uni-tube Design Stainless Steel Tube OPGW
Optical fibre composite overhead ground wire (OPGW) is an overhead ground wire containing optical fibre. It has multiple functions such as overhead ground wire and optical communication. It is mainly used for communication lines of 110KV, 220KV, 500KV, 750KV and new overhead high-voltage transmission system. It can also be used to replace the existing ground lines of the old overhead high voltage transmission system, add the optical communication line, transmit short time current and provide anti lightning protection. Other structures can be customized on request.
Cross section of OPGW
Optical Characteristics
The optical, geometrical, mechanical and environment characteristics of the ITU-T G.652 optical fiber shall be accordance with below table:
| Characteristics | Specified Values | Units | |||
| Optical Characteristics | |||||
| Mode field diameter | at 1310nm | 9.2±0.4 | µm | ||
| at 1550nm | 10.4 ± 0.5 | mm | |||
| Attenuation coefficient | at 1310nm | ≤0.35 | dB/km | ||
| at 1550nm | ≤0.22 | 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(PMD) | ≤0.2 |
| |||
| Cut-off wavelength (λcc) | ≤1260 | nm | |||
| Dispersion coefficient | 1288～1340nm | ≤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 | |||
| 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 | |||
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.
Fiber Colors
Steel tube 1 (No.1-24fibers)
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 |
One black tracer (100mm 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 2 (No.25-36fibers)
| 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 |
Characteristics
• Stainless steel tubes filled with hydrophobic gel provide the protection and support of the optical fibres
• Good tensile performance
• Small diameter, light weight, low additional load to the tower
• Appropriate fibre excess length of optical unit easliy to make
• Transport/storage temperature: -40℃ to +65℃
Specation of OPGW
| Items | Technical Data | ||
| Stranded | Core, layer 1 layer 2 | ||
| Stranding direction | Outer layer is Right hand | ||
| Cable diameter (Nominal) | 14.0mm | ||
| Cable Weight (Approx.) | 688.3kg/km | ||
| Supporting Cross Section | AS Wire | 104.7mm2 | |
| Rated Tensile Strength (RTS) | 111.6kN | ||
| Modulus of Elasticity (E-Modulus) | 149.5N /mm2 | ||
| Thermal Elongation Coefficient | 13.4×10-6/K | ||
| Maximum Working Stress (40%RTS ) | 44.64kN | ||
| Everyday Stress(EDS)(16~25%RTS) | 17.86~27.9kN | ||
| DC Resistance at 20℃ | 0.667ohm/km | ||
| Short time current (1s,20℃～200℃) | 8.77kA | ||
| Short time current Capacity ( I2t) | 77.0kA²s | ||
| Minimum bending radius | Installation | 30 times of cable diameter | |
| Operation | 15 times of cable diameter | ||
| Temperature Range | Installation | -20℃～+60℃ | |
| Storage & shipping | -40℃～+70℃ | ||
| Operation | -40℃～+70℃ | ||
| Attenuation | Bandwidth | Polarization Mode Dispersion | ||||||
@850nm |
@1300nm |
@1310nm |
@1550nm |
@850nm |
@1300nm | Individual Fibre | Design Link Value (M=20, Q=0.01%) | |
| G652D | — | — | ≤0.35dB/km | ≤0.21dB/km | — | — | ≤0.20ps/ km | ≤0.1ps/ km |
| G655 | — | — | — | ≤0.22dB/km | — | — | ≤0.20ps/ km | ≤0.1ps/ km |
| 50/125μm | ≤3.0dB/km | ≤1.0dB/km | — | — | ≥600MHz.km | ≥1200MHz.km | — | — |
| 62.5/125μm | ≤3.5dB/km | ≤1.0dB/km | — | — | ≥200MHz.km | ≥600MHz.km | — | — |
Packing & Shipping
• Standard Cable Drum
• Standard reel length: 2/3km/reel, other length is also available
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.
According to length of cable, we choose different type reel (D,d,b,w1,w2) for loading cable.
Environmentally
Full comply with ISO14001, RoHS and OHSAS18001 system
Installation Recommendations
Installation procedure:
It is recommended that IEEE Std 524-1992 and our company recommended procedures be used for the installation of OPGW.
FAQ
