The material characteristics of cable accessoriesAddtime：2015/11/1 

      cold shrink cable accessories is the elastomer material (commonly used with silicone rubber and EPDM rubber forming, by expanding and lining supports constitute parts of various cable accessories. When the site is installed, the pre - expansion is set at the end of the cable or in the joint, and the inner support is drawn, and the elastomer is rapidly shrinking and pressed on the cable insulation. Because it is in the room temperature by elastic recoil, but not like heat shrinkable cable attachment to shrink heating, so called cold shrink cable accessories, also known as cold shrink cable accessories. Early shrinkage cable terminal head just supplementary insulation adopt silicon rubber and contraction parts, electric field treatment still use should stress cone type or stress zone around the package. At present, all the raw materials of cable accessories are imported, and the silicone rubber has good insulation and high resilience. All products are made of special adhesive for bonding the connecting parts, to achieve the overall seal, to prevent and avoid the operation of the accident caused by the air ring.

    now generally adopted and contraction should stress control tube, the voltage level from 10kV to 35kV. Cold shrinkable cable joint, 1kV used shrinkage insulating tube for reinforced insulation 10kV by joint with inner and outer semi conductive shielding layer and contraction insulations. Three core cable terminal and branch set by.  

  cold shrink cable accessories with small size, convenient operation, simple and quick, no special tools, wide application range and product specifications, etc., the cable body has a lasting radial pressure, and the cable with the "breathing", sealing waterproof good, to ensure long-term reliable operation. Compared with the heat shrinkable cable accessories without fire heating, safe and reliable and in after the installation of the move or curvature does not like heat shrinkable cable accessories as attachment internal layer of uncoupled risk (because the cold shrink cable accessories by the elastic clamping force). Compared with the prefabricated cable accessories, although it is based on elastic pressing force to ensure the internal interface characteristics, but it does not like the prefabricated cable accessories as the cable section one one, specifications.

    must be pointed out is that prior to the cable in installation and cold shrink cable accessories is in a state of high tension. Therefore, it is necessary to ensure that during the storage period, cold shrinkable components should not have obvious permanent deformation or elastic should stress relaxation, or installed in the cable can not guarantee sufficient elastic clamping force, so it can not guarantee the good interfacial characteristics.  

  cable accessories, anti pollution, aging resistance, good water resistance, has excellent cold resistance, especially suitable for high altitude areas, cold areas, wet areas, salt spray, and heavy pollution areas. When the installation is not open flame, especially suitable for oil, chemical, mining and other inflammable and explosive places.