Views: 0 Author: Site Editor Publish Time: 2025-08-27 Origin: Site
As for cold shrink cable accessories, widely concerned as one of the key components in electrical infrastructure of contemporary electrical industry, basically including terminations and joints.
By providing sealing, insulation, as well as stress control, cold shrink terminations and joints fictionalized in connection between the equipment termination or another cable connector.
Regarding to heat shrink cable accessories, it requires open flame or hot air tools, howsoever cold shrink therefore deployed pre-expanded materials been fixed to a removable core.
As this core is pulled out, a tight and seamless cable seal therefore would be formed in a quickly shrink, which featured a faster, easier and safer installation.
It requires a analysis of carefulness to choose the right cold shrink accessories, of the cable system itself. Hereby, this article tend to explore the correct choice upon selection of cable accessories of termination and joints from the perspective of insulation.
Cross-linked polyethylene (XLPE) is a insulation material which is used in medium- and high-voltage power cables commonly. The material has excellent electrical properties, high thermal resistance (up to 90°C), and robust physical characteristics. XLPE cable cold shrink accessories are made from silicone rubber which has a compatible dielectric constant and offers excellent elasticity and tracking resistance. Therefore, a conformable interface can be formed between it and the XLPE surface.
Ethylene propylene rubber (EPR) is a insulating material with good flexibility and electrical properties. It’s generally applicable to cold shrink silicone-based accessories, provided that the rated voltage and size of the accessories match the cable.
Paper-insulated, lead-sheathed cable (PILC) fitting installation is a legacy cable technology. A uniquely designed transition fitting is required for terminating or connecting PILC cables. The fitting must not only effectively seal the end of the lead sheath, preventing moisture from entering the paper insulation, but also smoothly transition the dielectric from liquid-impregnated paper to modern solid dielectrics.
Selection application: Standard cold shrink kits are suitable for modern polymeric cables (XLPE/EPR). what's more, It’s necessary for PILC or other obsolete cable types to select specialized transition kits designed explicitly for that purpose.
