Price of 24 core OPGW optical cable and 12 core single-mode optical cable OPGW

Description :

　　OPGW fiber optic cable manufacturer OPGW power communication fiber optic cable

　　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 damage to avoid affecting the performance of optical fibers in the future. Special consideration should be given to the torsion, micro bending, local radial pressure outside the wire clamp, and pollution of optical fibers in OPGW. Therefore, effective measures should be taken during the construction phase to address the following issues:

　　(1) Prevent OPGW from twisting

　　Install balance hammers and anti twist devices on the walking board and tensioning clamps;

　　Using special double groove pulleys;

　　Adopting a tension defense line machine with dual winches;

　　(2) Prevent and reduce micro bending and stress of OPGW

　　Sharp angles are not allowed (control small bending radius of 500mm);

　　The diameter of the OPGW cable reel should not be less than 1500mm;

　　The diameter of the pulley should be more than 25 times the diameter of the OPGW, generally not less than 500mm; the inner side of the pulley should have nylon or rubber pads to prevent scratching the surface of the OPGW;

　　Suitable traction wires and pay off fittings;

　　Specify a disk length of 6000M for OPGW to prevent the number of times it passes over the pulley;

　　Limit the turning angle of the continuous laying line to ≤ 30 °. Within a tension section of the laying line, the direction of the OPGW after the turning angle should be in the shape of a "C";

　　(3) Control of tension in unwinding:

　　Adopting hydraulic tension unwinding machine and traction machine with tension release device;

　　Limit the wire laying speed to ≤ 0.5 meters per second;

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• 24 core OPGW