Type Testing Of Medium Voltage Cable Accessories

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 14, Type Testing Of Medium Voltage Cable Accessories.

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.

Type Testing Of Medium Voltage Cable Accessories

Chapter 14

Type Testing Of Medium Voltage Cable Accessories

From Medium Voltage Cable Accessories

  • 14.1. Introduction
  • 14.2. Some qualification tests for accessories
  • 14.2.1. DC withstand
  • 14.2.2. AC dry withstand
  • 14.2.3. AC wet withstand – outdoor terminations only
  • 14.2.4. Partial discharge of MV cable accessories
  • 14.2.5. Impact test – MV cable joints only
  • 14.2.6. Thermal cycling
  • 14.2.7. Impulse voltage withstand
  • 14.2.8. Humidity – indoor MV cable terminations only
  • 14.2.9. Salt fog test – outdoor MV cable terminations only
  • 14.2.10. Immersion test – outdoor MV cable terminations only
  • 14.2.11. Thermal short circuit
  • 14.2.12. Dynamic short circuit
  • 14.2.13. Inspection of medium voltage cable accessories
  • 14.3. Test voltage levels
  • 14.4. Testing medium voltage cable terminations to HD 629/BS 7888 14.5. Testing joints to HD 629/BS 7888
  • 14.6. Testing screened separable connectors
  • 14.7. Limitations of medium voltage type testing

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