Raychem Heat-Shrink Joint up to 72.5 kV

Powering the UKCable Services Limited

electrical interfaces and a perfect seal against moisture ingress. The elastomeric properties of the inner insulation layer of the joint body allowfor any cable diameter compensationand adjustment resulting from the loadcycling of the cable. At the same timethe two outer heat shrinkable layersprovide a tight and rigid belt for thejoint body representing a high level ofmechanical protection against outerenvironmental influences.

Raychem Heat-Shrink Joint up to 72.5 kV

The Raychem Heat-Shrink Joint EHVSThe joint is based on a heat-shrinkdesign for voltage classes up to 72.5 kV.Polymeric insulated cables of variousdesigns can be adapted with respectto shielding and metal sheath. Ourheat-shrink accessories have beenused by utilities and industrial compa-nies around the world for more than35 years. This ongoing field experiencehas made TE Connectivity a leader in materials science and technology for high-voltage applications. The TE Energy materials technology is atthe core of the development of ourheat shrink joints. The materials usedin our cable accessories have beenextensively optimized with respect toproduct design and function, manufac-turing and expected service environ-ments. Furthermore the system is suitable for paper and polymeric cableconstructions and is also designed to accommodate modern jointingrequirements such as mechanicalshear bolt connectors.

1

Expanded

Cable shieldingGrounding kits for commonlyused cable constructions likelead sheath, corrugated alu-minum sheath, copper tape,wire screens and combina-tions are available.

Heat-Shrink TechnologyThe conductive outer layer (1) togetherwith the insulating middle layer (2) represents the heat shrinkable hold outfor the inner elastomeric layer (3) of thejoint body. During the shrinking processthe stored recovery force of the elas-tomeric layer is released and adds up tothe recovery force generated by theheat shrinkable outer layers of the jointbody. The resulting high compressionforces as well as the perfect ability ofgeometrical adjustment provides tight

Size transitionThe size transition connectoris able to link cables with different conductor and/orinsulation diameter.

Cable insulation The joint is suitable to handlecables with different insula-tion layers like XLPE, EPR orPaper MIND.

Recovered

2 3

ConnectorThe mechanical connectorwith torque controlled shear-off bolts is suitable for allcommon conductors madeout of aluminium or copper.A special connector construc-tion allows also the jointing ofcables with small insulationthickness.

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Shield connectivitySolderless connections are used to connect the metallic –shields, -sheathsor –armours of the cables. The compo-nents continue the correct cross sectionacross the connection area, even for different metallic layers. In addition alayer of copper mesh is applied aroundthe joint, to assure safe contact andprotection.

Raychem Heat-Shrink Joint up to 72.5 kV

Mechanical connectorThe mechanical connector is designedfor all common conductor types, madeof aluminium or copper.Bolts with a predetermined shear-offtorque ensure reliable contact and easyhandling at every installation.

Outer joint protectionA heat-shrinkable tube with a strongwall thickness and internally pre-coatedwith adhesive, provides the outer pro-tection and a lasting moisture sealing.

Electrical field control The stress control tube (1) has a pre-cisely defined impedance characteristicwhich smoothes the electrical fieldover the connector and cable screenends. High voltage insulating tube (2)

and the inner wall of the screened tube(3) restore the conductor insulation.The elastic memory of the heat-shrinkcomponents ensures the correct wallthickness is obtained.

Shield continuityShield break, straight through andgrounding connections are possible.

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Cable stripper Gas torch Straightening slide rails Tool box Heating blanket

Technical data: 52 kV 72.5 kV

Relevant standards IEC 60840 / IEEE 404

Rated voltage U0/U (Um) kV 26/46 (52) 36/66 (72.5)

Basic impulse level kV 250 350

Max. continuous operating temperature °C 90 90

Max. conductor emergency temperature °C 130 130

Conductor short circuit temperature °C 250 250

Short circuit current (sheath) kA / 1sec 10 10

For shield break joints:

DC voltage between metallic

sheaths/screens kV 20 20

DC voltage between metallic sheath/screen

and earthed exterior kV 20 20

Lightning impulse voltage between

metallic sheath/screen kV 60 60

Lightning impulse voltage between metallic

sheath/screen and earthed exterior kV 30 30

Application Range:

Conductor mm2 1600 1600

Diameter over Insulation mm 30 – 86 30 – 86

Diameter over jacket mm 100 100

For special applications and bigger cable sizes please contact your local Cable Services representative.

Tools

Tools required for cable preparation can also be purchased or rented from Cable Services.

Raychem Heat-Shrink Joint up to 72.5 kV

Whilst Cable Services Limited has made every reasonable effort to ensure the accuracy of the information contained in this brochure, Cable Services Limited cannot assure that this information is error free. For this reason, Cable Services Limited does not make any representation or offer any guarantee that such information is accurate, correct, reliable or current. Cable Services Limited reserves the right to make any adjustments to the information at any time. Cable Services Limited expressly disclaims any implied warranty regarding the information contained herein, including, but not limited to, the implied warranties of merchantability or fitness for a particular purpose. Cable Services Limited’s only obligations are those stated in Cable Services Limited’s Standard Terms and Conditions of Sale. Cable Services Limited will in no case be liable for any incidental, indirect or consequential damages arising from or in connection with, including, but not limited to, the sale, resale, use or misuse of its products. Users should rely on their own judgment to evaluate the suitability of a product for a certain purpose and test each product for its intended application. In case of any potential ambiguities or questions, please don’t hesitate to contact us for clarification.

Cable Services - WrexhamRhosddu Industrial Estate, Rhosrobin, Wrexham LL11 4YZ.Tel: 01978 340450Fax: 01978 311315Email: sales@cableservices.co.uk

Cable Services - StoneUnit 2 Douglas Park, Opal Way,Stone Business Park, Stone, Staffordshire ST15 0YJTel: 01785 825970Fax: 01785 825977Email: central@cableservices.co.uk

Smith Electrical - GlasgowUnit 14, Block 8,Thornliebank Industrial Estate, Glasgow G46 8JH.Tel: 0141 621 2060Fax: 0141 638 9996Email: sales@smithelec.co.uk

Cable Services - Liverpool43 St. Johns Road, Liverpool L20 8AZ.Tel: 0151 9339022Fax: 0151 9339765Email: lpool@cableservices.co.uk

To place an order or for more information please contact your Cable Services sales team.

www.cableservices.co.uk

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Powering the UKCable Services Limited