MV Heat Shrink Joint | XLPE Polymeric Cables Unarmoured with Copper Wire or Copper Tape Screen up to 42kV
JTS Cable Joints | Manufactured by Nexans | Stocked by Thorne & Derrick
Medium Voltage 11kV 33kV
Heat Shrink Cable Joints
Cable Joints | Medium Voltage Cables | Single Core Polymeric Cables With Copper Wire Or Copper Tape Screen
Nexans JTS cable joints are installed onto MV Medium Voltage power cable systems to connect, repair or extend electricity distribution networks in 11kV 17.5kV 24kV 33kV and 42kV voltage classes – this includes jointing MV cables of single-core and 3-core construction with Paper (PILC) or Polymeric (XLPE EPR) insulation, armoured/unarmoured with copper tape or wire screen and stranded copper or aluminium type conductors.
The Nexans 36-42JTS1 W heat shrinkable MV straight joints are designed for unarmoured, plastic insulated cables with copper wire or copper tape screen, to accommodate either crimped or mechanical connectors up to Umax 42kV cables and 25-1200sqmm conductors.
The JTS cable joints form part of the Nexans range of HV joints and terminations offering a choice of conductor core connection : deep indent crimping, hexagonal restraint or shearbolt connectors and the choice of the material technologies : cold applied or heat shrinkable.
MV Cable Joints | Improved Reliability & Safety at Reduced Cost
JTS Cable Joints
- Short, slim and compact cable joint design
- Quick and easy to install using standard heat shrink techniques
- Excellent mechanical protection and electrical insulating properties
- Advanced screen connection and armour continuity for MV cables
- Heavy wall tubing for high mechanical strength and impact resistance
- Proof against water penetration and chemicals aggression
- Stabilized UV protection for indoor and outdoor locations (in-air or direct burial underground)
- Halogen-free material content for zero toxic gas emissions
- Compliant to Reach regulations
- Made in EU | Stocked by Thorne & Derrick
Single Heat Shrink Tube with Triple Function
Traditionally, heat shrink joints required several separate stages for the installation of the complete cable joint with multiple layers of heat shrink tubes needed to provide stress control, insulation and conductive functions – the labour intensive jointing procedure introduced increased risks of jointer error including tube misalignment and flamework deficiencies (scorching of tubes by overheating). The Triple Wall design of the JTS Cable Joint reduces installation times with corresponding labour savings.
The triple extruded heat shrink tube with integrated stress control provides compact installation with reduced components and excellent water sealing for direct burial into underground cable trench.
MV Cable Joint
36JTS1 W (CS) – 42JTS1 W (CS) Heat Shrink MV Straight Joints
Heat Shrink
36-42JTS MV heat shrink joint is the new high performance, compact and easy to install joint by Nexans for underground (cable trench direct burial in cable duct), or in air (cable tunnels and substation basement located to cable tray/ladder) applications. A single cable joint body with all the electrical functions integrated – Nexans 36-42JTS is an integrated stress control field, insulating and conductive heat shrink tube, which can withstand high voltage applications for application up to 42kV cables.
A double layer pad with conductive rubber inside and HK orange mastic outside ensure a Faraday cage and smooth the effect of the electrical field and of the voltage gradient in the connector area of the heat shrink joint – joints should only ever by installed by a Competent & Trained Jointer using approved cable jointing tools such as Alroc.
The electrical continuity of the cable screen is ensured by the cable jointer installing a tinned copper stocking with constant force springs in case of copper wire/tape screen (CS type) or with a standard tinned copper tape plus an earthing ferrule in case of only copper wire screen (W type).
The outer sheath or cable jacket of the medium voltage cable is restored with heavy wall adhesive lined tubing. Conductors can be connected using crimp splices and tools from Cembre – MC types of cable joint are supplied with Nexans GPH mechanical connectors.
MV Heat Shrink Cable Joint
Technical Data
The below table shows the range of MV Heat Shrink Joints for unarmoured single core polymeric cables with copper wire or copper tape screen up to 42kV.
– 36JTS type tested with BIL at 200 kV
| Um kV | Nexans Joint Type | Section Range (sqmm) | Cable Joint Length L (mm) | DOI Insulation (mm) | DOE Outer (mm) |
| 36kV | 36JTS1.95W-(CS) | 25÷95 | 600 (750 CS) | 20‐32 | 30‐44 |
| 36kV | 36JTS1.240W-(CS) | 70÷240 | 750 (900 CS) | 22‐38 | 36‐52 |
| 36kV | 36JTS1.300W-(CS) | 95÷300 | 750 (900 CS) | 24‐42 | 38‐54 |
| 36kV | 36JTS1.400W-(CS) | 185÷400 | 750 (1000 CS) | 28‐46 | 42‐60 |
| 36kV | 36JTS1.630W‐(CS) | 400÷630 | 750 (1000 CS) | 32‐52 | 44‐66 |
| 36kV | 36JTS1.1000W‐(CS) | 630÷1000 | 1000 | 42‐60 | 48‐70 |
| 36KV | 36JTS1.1200W‐(CS) | 800÷1200 | 1000 | 48‐64 | 54‐72 |
| 42kV | 42JTS1.95W-(CS) | 25÷95 | 600 (750 CS) | 20-34 | 34-50 |
| 42kV | 42JTS1.240W-(CS) | 70÷240 | 750 (900 CS) | 26-42 | 38-54 |
| 42kV | 42JTS1.300W-(CS) | 95÷300 | 750 (900 CS) | 28-46 | 40-60 |
| 42kV | 42JTS1.400W-(CS) | 185÷400 | 750 (1000 CS) | 32-48 | 42-64 |
| 42kV | 42JTS1.630W‐(CS) | 400÷630 | 750 (1000 CS) | 34‐56 | 46‐68 |
| 42kV | 42JTS1.1000W‐(CS) | 630÷1000 | 1000 | 44‐62 | 50‐74 |
| 42kV | 42JTS1.1200W‐(CS) | 800÷1200 | 1000 | 50‐66 | 56‐76 |
➡ The below video shows the modern generation of MV Heat Shrink Joint which has been developed by Nexans for the UK utility and contracting industry – the primary application of the JTS Joint is for the jointing of 11kV BS7870 Triplex type medium voltage cables. Cable joints are available medium voltage power cable networks up to 33kV in both cold shrink and heat shrink technology.
MV Straight Joints CENELEC HD 629.1 S2 IEC 60502-4
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| For MV cables with additional vapour screen please contact T&D | CS type joint is suitable both cables with copper wire or copper tape screen | W type is supplied with standard metallic tape design and earth ferrule for copper wire screen cable | For other MV cable types please contact T&D | Please contact T&D when requiring cable joints for same type cables with different cross sections | Various earth connection design solutions exist for armouring. For exact details please contact T&D | Cable joint design accommodates various cable connector/ ferrule types | Various earth connection kits are available for screen connection. For exact details contact T&D |
Thorne & Derrick have an International Distribution Agreement with Nexans Power Accessories UK and are their main stockists and suppliers for their range of Heat Shrink Joints & Terminations up to 66kV.
Nexans MONOi heat shrink cable terminations are a one-piece co-extruded anti-track (red) and stress control tube for connection and terminating 11kV BS7870-4-10 Triplex Cables 95-300sqmm into medium voltage electrical equipment.
Specification & Installation Instructions For MV Jointers
➡ Cable Terminations Triplex Download Specification
➡ Cable Terminations Triplex Jointing Instruction
➡ Cable Joints Triplex Download Specification
➡ Cable Joints Triplex Jointing Instruction
➡ Cable Joints 3 Core XLPE SWA Tape Screen up to 24kV Jointing Instruction
➡ Cable Joints 3 Core XLPE SWA Wire Screen up to 24kV Jointing Instruction
JTS Joints – Technical Specifications Approvals Testing CapabilityDownload
