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Low Voltage Cable Jointing
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Raychem Heat Shrink Joints EHVS

For high voltage cables up to 72.5 kV from TE Connectivity

The joint is based on a heat-shrink design for voltage classes up to 72.5 kV. Polymeric insulated cables of various designs can be adapted with respect to shielding and metal sheath. Our heat-shrink accessories have been used by utilities and industrial companies around the world for more than 35 years. This ongoing field experience has made TE Connectivity a leader in materials science and technology for high-voltage applications. The TE Energy materials technology is at the core of the development of our heat shrink joints. The materials used in our cable accessories have been extensively optimized with respect to product design and function, manufacturing and expected service environments. Furthermore the system is suitable for paper and polymeric cable constructions and is also designed to accommodate modern jointing requirements such as mechanical shear bolt connectors.

Product Range

  • 52 kV - Conductor 1600mm2 / Diameter over Insulation 30 – 86mm
  • 72.5 kV - Conductor 1600mm2 / Diameter over Insulation 30 – 86mm

Heat-Shrink Technology

The conductive outer layer together with the insulating middle layer represents the heat shrinkable hold out for the inner elastomeric layer of the joint body. During the shrinking process the stored recovery force of the elastomeric layer is released and adds up to the recovery force generated by the heat shrinkable outer layers of the joint body. The resulting high compression forces as well as the perfect ability of geometrical adjustment provides tight electrical interfaces and a perfect seal against moisture ingress. The elastomeric properties of the inner insulation layer of the joint body allow for any cable diameter compensation and adjustment resulting from the load cycling of the cable. At the same time the two outer heat shrinkable layers provide a tight and rigid belt for the joint body representing a high level of mechanical protection against outer environmental influences.

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Heat Shrink Joints
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