HV Cable Joints, Terminations & Connectors
➡ T&D distribute the most extensive range of HV High Voltage Cable Joints, Terminations & Connectors from manufacturers including 3M, Prysmian, Nexans Euromold, Elastimold, Pfisterer CONNEX and Shrink Polymer Systems.
Heat shrink, cold shrink, push-on and slip-over cable accessories enable the jointing, terminating and connection of 11kV-33kV and 66kV-132kV cables to oil, air or gas insulated switchgear, transformers, motors and overhead lines distributing electricity at medium/high voltages.
We hold large stocks of 11kV and 33kV joints and terminations suitable for XLPE, PILC and EPR cables to service the medium/high voltage power cable accessory requirements of UK and international customers.
High Voltage Cable Accessories
MV HV 11kV 33kV 66kV
- Cable Joints – Heat Shrink & Cold Shrink
- Cable Terminations – Heat Shrink & Cold Shrink
- Cable Connectors – Loadbreak & Deadbreak Elbows
- Screened Separable Connectors
- Cable Plugs – Inner Cone & Outer Cone Connector Plugs
- Cable Boxes, Bushings & Surge Arresters 11kV 33kV
- Also – 11kV 33kV MV HV Cables
Nexans Euromold connectors are specified to terminate MV HV cables with polymeric insulation into gas insulated electrical equipment with Interface A-F bushings.
Cold Shrink & Heat Shrink
Joints & Terminations
T&D supply both cold shrink and heat shrink cable terminations – conventional heat shrink terminations continue to be most extensively used to connect cables into air insulated cable boxes, switchgear and transformers providing stable performance in industrial installations located both indoors (substations) and outdoors (pole-mounted overhead line) applications.
Increasingly, cold shrink terminations and joints are preferred with less installation steps reducing scope for jointer error and the consistency of application achieved due to the elimination of the skill sensitive requirement to apply consistent and even surface heating to heat shrink terminations.
Cold Shrink Termination
Using 3M Cold Shrink type QT111 cable terminations the video demonstrates the flexibility and simplicity for terminating HV cables – the shorter installation length of the termination enables compact cable terminations into 11kV/33kV electrical equipment. No requirement for heating or tools ensures quicker and easier installation. The following video discusses the installation process for cold shrink terminations to MV HV screened cables.
Heat Shrink Termination
In this next video the procedure for installing heat shrink cable terminations is covered including key stages of the MV HV cable preparation process – a 33kV single core cable termination with polymeric (XLPE) insulation is installed.
Cable terminations and joints for use on MV HV electrical power distribution systems should only ever be installed by trained and competent Jointers in accordance with the manufacturers installation instructions – Thorne & Derrick can provide expert technical support to ensure the supply of the correct cable accessory for medium/high voltage cables supported by manufactured provided Cable Jointer Training.
Jointing 11kV 33kV Cables
Before commencement of installing 11kV 33kV cable joints ensure sufficient jointing room is available around the working area of the intended joint position to allow safe and effective cable jointing operations – consider the additional work room to accommodate specialised tools such as cable cutting and crimping tools.
Identify the phases and check if cable cores are crossed – set the 11kV/33kV cables into a straight position and level correctly aligned without undue stress before installing heat shrink or cold shrink cable joints.
Termination Of Cable Conductors
Cable jointer preferences and installation conditions of cable joints and terminations determine whether compression or shearbolt technology is used to terminate cable conductors. For instance, 11kV and 33kV single and multi-core medium/high voltage power cables with stranded copper conductors (Class 1) according to BS6622 are commonly crimped or terminated using hydraulic crimping tools (Cembre HT131-C) or battery operated crimping tools (Cembre B1350-CE) – these Cembre tools accommodate cable lugs up to 400sqmm. To install MV HV cable lugs with cross sectional areas 500sqmm and up to 630sqmm we can recommend the Cembre ECW-H3D crimphead coupled with the hydraulic PO7000 foot pump or B70M-P24 portable 24v electro-hydraulic pump.
The Pfisterer Sicon range of mechanical shearbolt cable lugs, terminals and connectors are suitable for the connection and termination of MV HV cables up to 66kV with copper or aluminium conductors (stranded circular, solid, sectoral shaped) without requirement for crimping tools – installed using no specialist jointing tools. The stepless shearbolt cable lugs have no predetermined breaking points in the thread ensuring the optimum thread load is achieved without protusions or need for conductor filing by the MV HV jointer.
Cable Joints ♦ Cable Terminations ♦ Elbow Connectors ♦ MV HV ♦ Medium & High Voltages ♦ 11kV 33kV 66kV ♦ Heat Shrink ♦ Cold Shrink