Power and technologyAddtime：2015/10/22 

    cold shrink cable accessories is by the elastic material (commonly used with silicone rubber and EPDM rubber) in the injection molding equipment injection vulcanization molding, and then by expanding and lined with plastic spiral support composed of various cable accessories. When the site is installed, the pre - expansion is set in the end of the cable or the joint, the plastic spiral strip (support), which is formed by the cable insulation, and the cable accessories. Because it is in the normal temperature by the flexibility to shrink, and not like the heat shrink cable accessories to heat the heat, it is commonly 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.  

  is now widely used in the cold shrink stress control tube, the voltage rating from 10KV to 35KV. Cold shrinkable cable joint, 1kV using cold shrinkable insulation pipe for reinforced insulation and 10kV used with inner and outer semi conductive shielding layer joint cold shrinkable insulations. Three core cable terminal bifurcation with cold contraction set branch.

    cold shrink cable accessories has small volume, convenient operation, rapid, need special tools, applicable range wide and product specifications less advantages. Compared with the heat shrinkable cable accessories, do not need to fire heating and after the installation of the move or bending will not like heat shrinkable cable accessories appear as internal accessories of the interlayer to uncouple the risk (because cold shrink cable accessories by elastic pressing force). Compared with the prefabricated cable accessories, although it is based on the elastic pressing force to ensure the internal cross section characteristics, but it will not be like prefabricated cable accessories as with the cable section one one, specifications.

    must be pointed out that, in the installation to the cable forward, prefabricated cable accessories are no tension, and cold shrink cable accessories is in a state of high tension under, therefore, you must ensure that in the storage period, cold cable components not should be obvious 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 section properties.