OPGW optical cable generally in the line design, the design department should be combined with the actual situation of the line, determine whether the need to set up good conductor ground wire, determine the type and length of good conductor ground wire, control the maximum use of tension of the ground wire distance conditions and tower head size, And determine the suitable OPGW short-circuit current capacity tI2t and the limit value of the maximum service tension that can be accepted by the load condition of the tower, and the latter can be multiplied by the coefficient of 2.5 ~ 8 to become the limit value of the rated failure strength of OPGW, the limit value of OPGW cable diameter and cable weight can be determined according to the load condition of the tower.

It is difficult to eliminate the faults of optical fiber circuit, but they cannot be eliminated without the four methods of direct analysisThe most direct method to judge whether the fault occurs in the transportation of optical fiber circuit is to analyze and judge according to the actual situation. This method can be applied to the analysis of various situations of the circuit.

The ADSS cable subjected to tension during operation is in the strong electromagnetic field existing in the space around the wire, and the capacitance coupling between the cable and the earth makes it in a space potential position. Under the action of space potential, the wet or dirty (inevitable) surface of the optical cable will produce a ground leakage current and heat, the heat will make the optical cable surface water evaporation, random (uncontrollable) to form a dry zone, blocking the surface leakage current. When the potential at both ends of the strip is high enough, a discharge is generated to form an arc (called a "dry strip arc"). The basic conditions for the occurrence of electrical corrosion are certain leakage current and high enough space potential.

1. Briefly describe the composition of optical fibers.An optical fiber consists of two basic parts: a core and cladding made of transparent optical material, and a coating.2. What are the basic parameters that describe the transmission characteristics of optical fiber lines?Including loss, dispersio

It is a fiber made of glass or plastic that acts as a light conduction tool.The main purpose of optical fiber is communication. At present, the optical fiber of communication is basically quartz fiber, and its main component is high purity quartz glass, that is, silica (SiO2).Optical fiber communica

Submarine cables, also known as undersea cables, are laid on the ocean floor to facilitate communication and data transmission between continents and countries. The process of laying submarine cables involves several key steps: