Knowledge

After the user receives the optical cable, check the optical cable qualification certificate and the optical data on the disk, check the optical cable disk number, model, number of cores and length, e

When laying vertically, special attention should be paid to the load-bearing problem of the optical cable. Generally, the optical cable should be fixed once every two layers.

The depth of direct buried optical cable trench should be excavated according to the standard. Where trenches cannot be dug, the pipelines can be laid overhead or drilled.

Before construction, check the occupancy of the pipeline, clean and place the plastic sub-pipes, and put in the traction line at the same time.

A cable is generally considered to be a wire that transmits electricity or information from one place to another, and is made of one or more mutually insulated conductors overlaid with insulation and

Usually, products with a small number of cores, a small product diameter and a simple structure are called wires, those without insulation are called bare wires, and the others are called cables.

?The breakdown test of the cable is to increase the voltage step by step until the insulation breakdown, and obtain the breakdown voltage value of the cable.

According to the use, it can be divided into bare wires, insulated wires, heat-resistant wires, shielded wires, power cables, control cables, communication cables, radio frequency cables, etc.

?The wire and cable industry is the second largest industry in China after the automobile industry, and the product variety satisfaction rate and domestic market share both exceed 90%.