Supply opgw-24B1-95 opgw optical cable and opgw optical cable fittings

Description :

　　OPGW fiber optic cable manufacturer OPGW power communication fiber optic cable

　　The product application of OPGW optical cable is mainly used on 500KV, 220KV, and 110KV voltage level lines. Due to factors such as power outages and safety, it is mostly used on newly built lines. Lines with high voltage exceeding 110kV have a large span (usually above 250M); Easy to maintain, easy to solve for line crossing problems, and its mechanical characteristics can meet the requirements for large line crossings; The outer layer of OPGW is metal armor, which has no effect on high-voltage corrosion and degradation; OPGW must be powered off during construction, and the losses caused by power outages are significant. Therefore, OPGW should be used in the construction of new high-voltage lines above 110kV;

　　OPGW is mainly used for the construction of new lines and has a wide range of applications. Some old lines require the use of ADSS optical cables for installation, and the installation of ADSS also requires the installation of lightning protection equipment, making it more complicated. In the future, OPGW optical cables will be used for the installation of new lines, which saves time and costs.

　　The installation design of OPGW should consider the coordination with wire stress, sag, and insulation clearance, and its load should not exceed the allowable range of use of the current tower and foundation. Therefore, the characteristic curve of the selected OPGW should be calculated based on its main technical parameters, and the layout, appearance, and installation drawings of the junction box, various fittings, and accessories should be designed in combination with the actual engineering situation.

　　1. Treatment of initial elongation

　　For the treatment of initial elongation of OPGW, the cooling method can be used, which involves reviewing the aluminum steel ratio of OPGW and referring to the cooling values of similar conductors or ground wires to handle its initial elongation.

　　2. Design of anti vibration measures

　　Among the fittings used in conjunction with OPGW, the tension clamp is of the pre twisted wire type, and the suspension clamp is equipped with pre twisted wire and rubber pads. These two fittings have a certain degree of anti vibration capability. To further enhance the anti vibration capability, it is possible to consider installing anti vibration hammers, which are generally calculated based on the span:

　　When the span is ≤ 300M, install an anti vibration hammer;

　　When the span is greater than or equal to 300M, install two vibration dampers.

　　3. Precautions for OPGW construction and installation

　　The construction and installation of OPGW is different from ordinary steel strands, and attention should be paid to preventing long-term damage to avoid affecting the performance of optical fibers in the future. Special attention should be paid to the torsion, micro bending, local radial pressure outside the wire clamp, and pollution of optical fibers in OPGW.

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