What Factors Can Affect The Quality Of Cable Attachments?

There are many factors that affect the quality of power cable accessories. In principle, there are the following aspects:

1. Electrical performance. The quality of electrical performance is the primary principle for evaluating the quality of cable accessories. Mainly consider whether the electric field distribution of the cable accessories is reasonable, whether the measures to improve the electric field distribution are appropriate, the electrical strength of the material, the loss of the medium, the insulation margin of the product, etc.

At the same time, the stability of electrical properties should also be considered, including the chemical, physical properties and structural stability of cable accessories, such as whether the stress control material is stable, and whether the stress cone is easily deformed. The influence and prevention of cable insulation retraction on the electric field distribution of cable accessories measures, compatibility of various materials, stability of interface performance, etc.

In addition, the thermal properties of cable accessories, such as dielectric loss, contact resistance and stability of conductor connections, thermal conduction release, and the effects of thermal expansion and cooling on the electrical and mechanical properties of various components should also be considered.

2. Sealing performance. Sealing moisture resistance directly affects the electrical performance and service life of cable accessories. Whether the sealing structure of the terminal is reliable and stable. Introduction and classification of power cable accessories. In general, the intermediate joint should also have a matching metal moisture-proof casing, especially when buried in the ground or used in a humid environment.

3. Mechanical properties. The terminals should have sufficient bending and vibration resistance. The intermediate joint should be able to withstand a certain tensile force and measures to prevent damage from external forces.

4. Process performance. Process performance is an important condition for the design and selection of cable accessories. The installation process should be as simple as possible, which is convenient for on-site construction, and the construction period is short; the requirements for the site environment and the technical level of the workers are not high; the installation quality is easy to control, and the quality is reliable.