List of advantages of cold shrink cable ends:
Cold shrink cable joint
1. Cold-shrinkable cable accessories are components that use elastomer materials (commonly used silicone rubber and ethylene-propylene rubber) to be injection vulcanized in the factory, then enlarged and lined with plastic spiral supports to form various cable accessories. During on-site installation, these pre-expansion pieces are placed on the treated cable ends or joints, and the internally supported plastic spiral strips (supports) are pulled out and pressed against the cable insulation to form a cable accessory. Because it relies on elastic retraction at room temperature, rather than heating and shrinking with fire like heat-shrinkable cable accessories, it is commonly known as cold-shrinkable cable accessories. The early cold-shrinkable cable terminals only used silicone rubber cold-shrinkable parts for additional insulation, and the electric field treatment still used stress cone type or stress tape wrapping type;
2. Cold shrinkage stress control tubes are now commonly used, with voltage levels ranging from 10kV to 35kV. For cold shrink cable joints, the 1kV grade uses cold shrink insulation tubes as reinforced insulation, and the 10kV grade uses cold shrink insulation parts with internal and external semi-conductive shielding layers. The three-core cable terminal bifurcation adopts cold shrink branch sleeve;
3. Cold-shrinkable cable accessories have the advantages of small size, easy and rapid operation, no need for special tools, wide application range and few product specifications;
Cable plug
4. Compared with heat-shrinkable cable accessories, it does not need to be heated by fire, and moving or bending after installation will not cause the risk of detachment of the internal layers of the accessory like heat-shrinkable cable accessories (because cold-shrinkable cable accessories rely on elastic compression force). Compared with prefabricated cable accessories, although they rely on elastic compression force to ensure internal interface characteristics, they do not correspond to the cable section one-to-one like prefabricated cable accessories and have many specifications;
5. It must be pointed out that before being installed on the cable, the components of the prefabricated cable accessories have no tension, while the cold shrink cable accessories are under high tension. Therefore, it must be ensured that during the storage period, the cold shrink components should not have obvious deformation or elastic stress relaxation. Otherwise, sufficient elastic compression force cannot be guaranteed after being installed on the cable, and thus good interface characteristics cannot be guaranteed.
European cable joint, American cable joint
