Optical fiber composite overhead ground wire (OPGW-central pipe).
Product Description:

1. Stainless steel tube: contains optical fiber and hydrocarbon fiber paste
2. Aluminum-clad steel wire
OPGW products integrate ground wire and optical communication functions: mainly used for 35KV, 110KV, 220KV, 500KV,The communication lines of the new overhead high-voltage transmission system of 750KV and above can also be used to replace the existing ground wire of the old overhead high-voltage transmission system, increase the optical communication line, conduct short-circuit current and provide lightning protection; The company will scientifically design the optical cable structure according to the user's specific use environment (such as tower distance, arc sag requirements, ice charge, wind load and allowable tensile force of suspension point, communication capacity, short-circuit current, etc.), and the structure can also be specified by the user.
Features and applications
¡ñ Stainless steel tube protects the optical fiber, with high tensile strength;
¡ñ The cable diameter is small, and the additional load on the tower is low;
¡ñ Overhead installation.
Fiber characteristics
| G.652. D | G.655 | 50/125¦Ìm | 62.5/125¦Ìm |
attenuation | @850nm | - | - | ¡Ü3.0dB/km | ¡Ü3.0dB/km |
@1300nm | - | - | ¡Ü1.0dB/km | ¡Ü1.0dB/km |
@1310nm | ¡Ü0.36dB/km | ¡Ü0.36dB/km | - | - |
@1550nm | ¡Ü0.22dB/km | ¡Ü0.23dB/km | - | - |
bandwidth | @850nm | - | - | ¡Ý500MHz¡¤km | ¡Ý200MHz¡¤km |
@1300nm | - | - | ¡Ý1000MHz¡¤km | ¡Ý600MHz¡¤km |
The fiber optic cable is up to the wavelength |
| ¡Ü1260nm | ¡Ü1260nm | - | - |
Polarization mode dispersion | Single fiber | ¡Ü0.20ps/¡Ìkm | ¡Ü0.20ps/¡Ìkm | - | - |
Link value (M=20, Q=0.01%) | ¡Ü0.10ps/¡Ìkm | ¡Ü0.10ps/¡Ìkm | - | - |
Technical parameters
project | content | Typical values |
Number of fibers | 2~48 |
Protective tubes | material | Stainless steel pipes |
Outer diameter mm | 1.5~6 |
Stranded single wire | material | Aluminum-clad steel/aluminum alloy/aluminum rod |
Diameter mm | 1.5~6 |
Maximum outer diameter | mm | 18 |
Maximum pulling force | kN | 280 |
Maximum cross-sectional area | mm² | 200 |
Maximum short-circuit current capacity | 400-200¡æ£¨Ka²*S£© | 100 |
Operating temperature range | ¡æ | -40~+65 |
Compression-resistant | N/100mm | 2200 |
*Customers can customize the cable structure and number of cores according to their needs |
Key mechanical and environmental properties
project | Inspection standards | Inspection process | request |
tension | IEC 60794-4-10 | According to the change of optical cable structure | Additional attenuation ¡Ü 0.05dB |
pressure | IEC 60794-20-9.4.5 | 2200N/100mm£¬10min£¬Intervals1m 3 times | Additional attenuation¡Ü 0.1dB, noneMechanical damage |
Repeated bending | IEC 60794-4-20-9.4.3 | R=15~20*D | Additional attenuation¡Ü 0.05dB, noneMechanical damage |
Seepage | IEC 60794-4-10-9.8 | Specimen length 0.5m, 20¡À5¡ãC, water height 1m, for 1h | No water seepage |
Dripping | IEC 60794-4 | Specimen length 0.3m, 70¡À1¡ãCfor 24h | Fillers or compounds do not flow out or trickle |
Temperature cycling | IEC 60794-4-20-9.6 | -40¡æ~+70¡æ | Additional attenuation ¡Ü 0.1dB |
Packing and delivery length
standard iron-wood discs;
Nominal value of delivery length: according to customer requirements.
Ordering information
RHTX | OPGW | -¡õ¡õ-¡õ[¡õ; ¡õ] 1 2 3 4 5 |
1. Number of fiber cores: | 2~48 |
2 Fiber Type: | A1a(50/125)/A1b(62.5/125)/B1.3(G652D)/B4(G655) |
3 Cross-sectional area: | Customer requirements |
4 Breaking Force: | Customer requirements |
5. Short-circuit current capacity: | Customer requirements |