Introduction and advantages of cold shrink cable joint kit

The cold shrink cable joint kit is made of ethylene propylene rubber and silicon rubber to be processed into pipes. After expansion, the inner wall is supported by spiral nylon strips. When installing the cold shrink cable joint kit, you only need to put the tube on the cable core, pull away from the supporting nylon strip, and rely on the shrinkage characteristics of the rubber to shrink the tube on the cable core. Generally used in plastic insulated cable lines of 35kV and below, especially suitable for places where open flames are strictly prohibited, such as mines, chemical plants, and oil refineries. Next, let's take a look at the introduction and advantages of the cold shrink cable joint kit. Here are some answers.

Here is the content list:

•  Introduction of cold shrink cable joint kit.

•  The advantages of a cold shrink cable joint kit.

Introduction of cold shrink cable joint kit.

The cold shrink cable joint kit is made of elastomer materials (silicon rubber and ethylene-propylene rubber are commonly used) in the factory by injection vulcanization, and then expanded in diameter and lined with plastic spiral supports to form various cable joint kits. When installing on-site, put these pre-expansion pieces on the end of the cable after treatment or at the joint, draw out the internally supported plastic spiral strip (support), and press it on the cable insulation to form a cable joint kit. Because it relies on elastic retraction at room temperature, instead of using fire to shrink as heat shrinkable cable accessories, it is commonly known as a cold shrink cable joint kit. The early cold shrink cable joint kit only uses silicone rubber cold-shrinkable parts for additional insulation, and the electric field treatment still uses the stress cone type or the stress band wrapping type. The cold shrinkage stress control tube is generally used, and the voltage level is from 10kv to 35kv. The 1kv class uses cold-shrinkable insulating tubes for reinforced insulation, and the 10kv class uses cold-shrinkable joints with inner and outer semi-conductive shielding layers. Cold-shrinkable branch sleeves are used at the bifurcation of the three-core cable terminal.

The advantages of a cold shrink cable joint kit.

The cold shrink cable joint kit has the advantages of small size, convenient and fast operation, no special tools, wide application range, and few product specifications. Compared with the heat-shrinkable cable joint kit, the cold shrink cable joint kit does not need to be heated by fire, and after installation, it will not be moved or bent like the heat-shrinkable cable joint kit. The shrink cable joint kit relies on elastic compression force). Compared with the prefabricated cable connector kit, although the elastic compression force is used to ensure the internal interface characteristics, it does not correspond to the cable section one by one like the prefabricated cable connector kit and has many specifications. It must be pointed out that the components of the prefabricated cable connector kit are not under tension before they are installed on the cable, while the cold shrink cable joint kit is under high tension. Therefore, it must be ensured that during the storage period, the cold shrink cable joint kit should not have obvious permanent deformation or elastic stress relaxation. Otherwise, after installation on the cable, sufficient elastic pressing force cannot be guaranteed, and good interface characteristics cannot be guaranteed.

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