La maintenance des câbles doit connaître les principes et les compétences

Cables are an indispensable part of our modern lives, playing a crucial role in various fields such as industry, construction, transportation, and households. Therefore, understanding the principles and techniques of cable maintenance is vital for both production operations and living safety. This article will provide a detailed introduction to the basic principles and techniques of cable maintenance, helping readers better manage and maintain their cables.

I. Basic Principles of Cable Maintenance

: Moisture can damage cable conductors and insulating materials, leading to failures and losses. Therefore, cables must be placed in a dry environment. If cables need to be temporarily exposed to moist conditions, they should be wiped with a cloth and thoroughly dried before entering a dry space.

: Dust and impurities accumulated on the surface of cables can hinder heat dissipation and may cause circuit breaks. Regular cleaning of cables can extend their lifespan and reduce maintenance costs. Common cleaning methods include gently wiping the cable surface with water and a soft cloth, as well as using a vacuum cleaner to remove dust and impurities.

: Excessive oxygen content in the air inside cables can cause oxidation of insulating materials. Therefore, it is essential to ensure that cable ends are completely sealed. When connecting cables, use metal sleeves or penetrants for sealing as needed.

: For flexible cables, care should be taken to avoid exceeding their minimum bending radius, which may cause bending damage. If cables need to be bent to fit specific requirements, choose specially designed cable types and follow the manufacturer's recommended operating procedures.

II. Specific Techniques for Cable Maintenance

: The grounding resistance of cables is an important indicator of cable safety. By measuring grounding resistance, one can determine whether additional grounding is needed, as well as the number and location of grounding points required. When measuring grounding resistance, carefully check the contact of grounding electrodes and use testing instruments for accurate measurements.

: Circuit testing is an effective method to determine the location of cable faults. By using a voltmeter for circuit testing, potential problem points can be identified and useful information provided for more in-depth maintenance work.

: Cable insulating materials are key to maintaining normal cable operation. Regular inspection and timely replacement of damaged parts of cable insulating materials are necessary to ensure cable safety and reliability.

: In some cases, special clamps are needed to support or clamp cables to protect them from additional tensile or twisting forces. Choosing the correct clamp type and installation location can effectively extend the lifespan of cables.

: During cable maintenance and splice heating, appropriate isolation measures should be taken to avoid interference between cables, which may cause faults.

In practical operations, the application of the above techniques and principles needs to be determined based on specific scenarios and requirements. Additionally, before performing cable maintenance, it is important to understand the type, characteristics, and operating environment of the cables. For cables in high-risk areas, regular measurements of cable insulation status and reliability indicators should also be considered to ensure normal operation.