Medium Voltage Cable Joints – An Overview

Published 21 Aug 2019

  • uploaded by Chris Dodds - Thorne & Derrick Sales + Marketing Manager

In this series of 15 blogs we provide Chapter breakdowns for the Nexans published book, “Medium Voltage Cable Accessories, A Theoretical and Practical Approach”.

Today, we overview Chapter 12, Medium Voltage Cable Joints – An Overview

The book covers the installation of medium voltage cable terminations, separable connectors, cable joints and associated LV MV HV Power Cable Accessories such as cable glands, lugs and cable cleats.

Great emphasis is placed on failure modes of medium voltage cables and methods of preventing potential problems in service of electrical power systems operating typically at 11kV/33kV.

Essential reading for:

  • Lead Electrical Engineers
  • Electrical Project Engineers
  • Principal Electrical Engineers
  • Plant Engineers
  • LV HV EHV Cable Jointers
  • ATEX Inspectors
  • Substation Commissioning Managers
  • LV HV EHV Project Managers
  • Buyers & Procurement Managers
  • SAP’s
  • Sales Managers & Engineers

The book is an instant hit with DNO’s, IDNO’S, ICP’s, MV HV Cable Jointers, Cable Contractors, Cable Jointer Training Centres, Electrical Contractors and Substation Engineers.

Medium Voltage Cable Joints – An Overview

Chapter 12

Medium Voltage Cable Joints An Overview

From Medium Voltage Cable Accessories

  • 12.1. Introduction
  • 12.2. Connecting the medium voltage conductors
  • 12.2.1. Crimped connectors
  • 12.2.2. Mechanical connectors
  • 12.3. The elimination of air from critical areas
  • 12.3.1. Stress relieving tape
  • 12.3.2. Faraday Cage
  • 12.4. Stress control in medium voltage cable joints
  • 12.4.1. Geometric type – a) push on cable joints
  • 12.4.2. Geometric type – b) cold shrink cable joints
  • 12.4.3. High permittivity
  • 12.5. Thickness of insulation
  • 12.6. Sealing the medium voltage joint
  • 12.6.1. The one piece cable joint
  • 12.6.2. The multi layered cable joint
  • 12.7. Earthing medium voltage cable joints
  • 12.7.1. Single core cable joints
  • 12.7.2. Three core cable joint earth
  • 12.8. Mechanical strength
  • 12.9. Hybrid cable joints
  • 12.9.1. Moulded Faraday Cage over connector
  • 12.9.2. Shrink tubes and resin combination

Medium Voltage Cable Accessories book

Nexans (Euromold) manufacture high voltage Screened Separable Connectors (Elbow & Bolted Tee), Cable Joints & Cable Terminations (Cold Shrink & Heat Shrink), Bushings and Surge Arresters are available to suit 11kV, 33kV and up to 66kV distribution networks.

Medium Voltage Cable Accessories Book Published By Nexans

  • Format: Hardback
  • Extent: 160pp
  • Size: 300x215mm [Nexans 11kV 33kV Cable Jointers Book]
  • ISBN: 978-0-9573785-0-6
  • RRP: £79.99
  • Illustrations: Nexans Power Accessories (UK)
  • Publication Date: March 2013


Medium Voltage Cable Accessories Book Published By Nexans


In January 2018 Thorne & Derrick International, based in the UK, signed a UK Distribution Agreement with Nexans Power Accessories UK.

T&D are national distributors of LV, MV & HV Cable Installation, Jointing, Substation & Electrical Equipment – servicing businesses involved in cabling, jointing, substation, earthing, overhead line and electrical construction at LV, 11kV, 33kV, 66kV and EHV. Supplying a complete range of power cable accessories to support the maintenance and installation of HV transformers and switchgear.

  • Slip-on Cable Terminations
  • Cold-shrink Cable Terminations
  • Heat-shrink Cable Terminations
  • Cable Joints – Heat & Cold-shrink
  • Separable Connectors (Euromold)
  • Surge Arresters & Switchgear/Transformer Bushings


Signing the new Nexans Power Accessories UK Distribution Agreement is a key part of Thorne & Derrick’s growth strategy for the next 5 years.

With T&D’s knowledge and experience of stocking and supplying Medium & High Voltage Cable Accessories this new partnership with Nexans delivers the most complete range of Joints, Terminations and Connectors for medium voltage power systems.

Training Courses & Services For Cable Jointers

Empower your CV and skill-set by grasping the 66kV Jointer Training opportunity. Jointers must currently be 33kV Competent and experienced to be ready to undertake the step-up to 66kV from 33kV. 11kV Jointer Training Courses also available.

Contact our UK Power Team for competitive quotations, fast delivery from stock and technical support or training on all LV-HV products.

Key Product Categories: Duct Seals | Cable Cleats | Cable Glands | Electrical Safety | Arc Flash Protection | Cable Jointing Tools | Cable Pulling | Earthing | Feeder Pillars | Cable Joints LV | Joints & Terminations MV HV 

Thorne & Derrick International

Further Reading