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 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
➡ 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 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.
➡ 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.
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.
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.
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.
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