Introduction to construction methods of optical cables

Outdoor construction of optical cables:

The most important thing for laying long-distance optical cables is to choose a suitable path. The shortest path here may not necessarily be the best, but attention should also be paid to land use rights, the possibility of installation or burial, etc.

It is necessary to have a complete design and construction drawing for convenient and reliable construction and future inspections. During construction, it is important to be careful not to subject the optical cable to heavy pressure or be punctured by hard objects.

When the optical cable turns, its turning radius should be greater than 20 times the diameter of the cable itself.

1) Outdoor overhead optical cable construction:

A. The overhead hanging method of hanging wires is simple and inexpensive, and is widely used in China. However, it is time-consuming to hang and organize the hooks.

B. The suspension wire winding overhead method is more stable and requires less maintenance work. But a specialized tying machine is required.

C. The self-supporting overhead method has high requirements for the main line, difficult construction and maintenance, and high cost, which is currently rarely used in China.

D. When overhead, a guiding device must be installed at the dry end of the optical cable to avoid dragging the cable to the ground. Pay attention to reducing friction when pulling optical cables. Leave a section of optical cable for expansion and contraction on each stem.

E. Pay attention to the reliable grounding of metal objects in the optical cable. Especially in mountainous areas, high-voltage power grid areas, and multiple areas, there are generally 3 grounding points per kilometer, and even non-metallic optical cables are used.