Why is the cable damp?

2023-05-24 157

As the primary carrier of power transmission, wire and cable are widely used in electrical equipment, lighting lines, household appliances, etc. The quality of the cable directly affects the quality of the project and the safety of consumers' lives and property. There are many types of wires in the mall, and you should choose the right wires according to your own power load.


A power cable is a cable used to transmit or distribute high-power electrical energy in a power system. The electric energy declared by the power station is connected to the substation of various voltage levels through overhead transmission lines and power cables, and then sent to the various units. Compared with other bare wires, the strength of wire and cable manufacturers is small, safe, reliable, concealed, less maintenance, and durable. It can be laid in various occasions. However, the power cable structure and production process are relatively messy and costly. Therefore, it is generally used in power introduction or lead-out lines of power plants, substations, industrial and mining enterprises, and transmission and distribution lines across rivers, railway stations, and urban areas. And in the main power lines inside the industrial and mining enterprises.


In the process of manufacturing, installation, transportation, etc., the fireproof cable may be exposed to moisture. Once the fireproof cable is wet, it will affect the function and service life of the fireproof cable. So what are the reasons for the fireproof cable being damp?


1. The outer insulation layer of the fireproof cable is intentionally or unintentionally damaged, which may cause moisture.

2. The sealing of the end cap of the fireproof cable is not tight, and it may be damaged during the cable transportation and laying, which will cause water vapor to enter.

3. When using a fireproof cable, the cable is broken down and the protective layer is damaged due to improper operation.

4. If some parts of the fireproof cable are not tightly sealed, moisture or moisture will enter the cable insulation from the cable end or cable protection layer, then penetrate the cable accessories and damage the entire power system.