HV Cable Joints, Terminations & Connectors

MV HV High Voltage Cable Joints | Cable Terminations | Cable Connectors | Distributed from Stock | UK & Export Sales

Thorne & Derrick distribute the most extensive range of MV HV Medium & High Voltage Cable Joints, Terminations & Connectors from manufacturers including 3M, Prysmian, Nexans Euromold, Elastimold, Pfisterer CONNEX & SEANEX 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.

Thorne & Derrick hold large stocks of 11kV 33kV 66kV Joints & Terminations suitable for XLPE, PILC and EPR cables, in both heat shrink and Cold Shrink technologies, to service the medium/high voltage power cable accessory requirements of UK and international customers.

HV Joints & Terminations | Heat Shrink 

Improved Reliability & Advanced Safety at Reduced Cost

Nexans JTS is a new generation of HV Cable Joints for jointing of 11kV/24kV and medium/high voltage power cables up to 33kV/42kV – the medium voltage cable joints are suitable for for single or 3 core polymeric (XLPE EPR) armoured or unarmoured cables with copper wire screen, copper or aluminium tape screen.

• Triplex Layer Tube – quick installation with reduced components and heat shrinking reducing scope for Jointer error
• Compact – short and slim design heat shrink joint provides space-saving installation
• Reliable – heavy wall heat tubing for excellent mechanical strength, sealing and impact resistance
• Mechanical Shearbolt Connectors – fast and efficient electrical connection  and jointing of conductors without resort to crimping tools

➡ Download Nexans JTS | MV HV Joints | Heat Shrink Catalogue

➡ Watch Video | Nexans JTS HV Cable Joints

The Nexans JTS cable jointing system now provides the most cost-competitive option to power contractors: the MV & HV cable joints manufactured by Nexans, “The Global Expert in Cables & Cable Systems” are tested in accordance to CENELEC HD629.1. The internationally recognised quality standard ensures power system reliability and outage reductions when installed in accordance with the manufacturers instructions by Competent cable jointers.

Nexans JTS | HV Joints | 11kV 33kV | Heat Shrink Cable Joints for High Voltage Power Cables – the single one-piece cable joint features Triple Layer Tube (Stress Control | Insulation | Conductive)

Nexans MONO is a range of HV terminations featuring an integrated heat shrink stress control field and anti-tracking insulating tube, which can withstand humidity, extreme temperatures, UV radiation, and heavy polluted environments.

Nexans MONO | HV Terminations | 11kV 33kV | Heat Shrink Cable Joints for High Voltage Power Cables

➡ Download | Nexans MONO | MV HV Terminations | Catalogue

➡ Watch Video | Nexans MONO HV Cable Terminations

Cold Shrink Terminations & Joints

With faster, easier installation, and the long-term reliability provided by superior environmental sealing, 3M Cold Shrink Medium Voltage Cable Accessories achieves improved efficiency and performance, as well as significant cost savings.

Using 3M Cold Shrink type QT111 cable terminations the video demonstrates the flexibility and simplicity for terminating MV HV cables – the shorter installation length of the termination enables compact cable terminations into 11kV/33kV, 15kV and 66kV electrical equipment. No requirement for heating or tools ensures quicker and easier installation.

Joint | Terminate | Connect Medium & High Voltage Cables MV HV

 Features & Benefits

• Tight Cable Sealing – HV joint or termination retains resiliency and pressure after prolonged aging and outdoor pollution exposure
• Flexible Cold Shrink – accommodates all power cable manufacturers bend radius tolerances and recommendations
• Reliability – high dry and wet insulation resistance for direct burial cable joint or outdoor termination
• Outdoor Cable Terminations – excellent resistance to ozone and ultra-violet radiation
• Versatile – Cold Shrink joints or terminations install quickly and accommodates a wide range of cable sizes
• Dependable – proven long-term reliability and safe operation at overload temperature on MV HV power system networks
• Time Efficient – reduced installation time for the Jointer compared to heat shrink, electrical taping or resins

The following video demonstrates the installation process for Cold Shrink terminations to MV HV screened cables.

➡ Watch Video | 3M Cold Shrink HV Cable Joints

Power Cable Terminations for MV HV Electrical Systems Utilising 3M Cold Shrink | QT-III Cold Shrink silicone rubber is specifically formulated as a high track-resistant material with hydrophobicity (water repelling action) to virtually ensure a long life cable termination expectancy for indoor/outdoor medium/high (MV HV) cables.

Euromold Connectors | A Nexans Brand

Thorne & Derrick are Approved Distributors & Stockists for Nexans Euromold Connectors – fully screened compact separable cable connectors terminate medium/high voltage cables onto motor, transformer or switchgear bushings to provide a “touch safe” cable termination with disconnection option for polymeric cables (XLPE EPR).

The Euromold range of Separable Connectors are manufactured from high quality EPDM rubber and include elbow, straight and tee connectors supplemented by a complete range of 11kV-33kV bushings. Separable connectors are typically used to terminate and connect cables into gas insulated switchgear (GIS) power systems and circuits distributing MV-HV electricity at 6.6kV, 11kV, 33kV and 66kV medium/high voltages.

Separable Connectors | Large UK Stocks of Nexans Euromold Connectors (EPDM) | Also Heat Shrink & Slip-over Cold Applied Terminations & Joints for MV HV Power Cables & Systems

Connex Connectors | A Pfisterer Brand

Pfisterer MV CONNEX cable connectors are specified to terminate medium/high voltage cables into inner cone bushings on gas insulated switchgear, RMU ring main units, transformers, transducers and capacitors typically distributing 33kV/52kV electricity – depending on MV bushings a range of sizes are available to terminate polymeric cables with XLPE/EPR insulation, bonded or easy strip semicon, copper wire/tape screen and with or without armour.

Inner Cone Plugs | Large UK Stocks of Pfisterer CONNEX Connectors & Cable Terminations 33kV MV HV | Also Surge Arresters & Bushings for MV HV Power Cables & Systems

➡ The following Video provides an overview of the Installation Procedure for CONNEX Connectors for the termination of Medium/High Voltage (MV-HV) Cables manufactured by Pfisterer and stocked by Thorne & Derrick – should you require specification support, technical guidance or Jointer training services please call us to discuss.

Jointing 11kV 33kV Cables

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.

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 Sh