Blog
11kV Heat Shrink Cable Terminations Connecting XLPE Wire Screened Cables
April 11th, 2018
- Application: 11kV Heat Shrink Cable Terminations Connecting XLPE Cables
- Cable Termination Type: Raychem Heat Shrink Termination
- Cable Type: XLPE Wire Screened Cables 11kV Single Core
- Cable Jointer: Stuart Duncan HV/LV Cable Jointer at CableTec Services
- Featured Manufacturer: Raychem
11kV Heat Shrink Cable Terminations
Single core 11kV heat shrink termination for medium or high voltage XLPE cables in indoor applications are designed to terminate polymeric insulated 11kV cables into air insulated switchgear and cable end boxes.
Single core 11kV cable termination kits are supplied with all the necessary components for 3 single core terminations:
- Stress-control tubing kit
- 3 x heatshrink cable termination tails (650mm per core)
- Earth kit for 11kV cables with copper tape screens
- Mastic tape
- Cable termination installation instructions
3 core termination kits are supplied with all the necessary components for 1 three core terminations:
- 3 core breakout sleeve
- Stress-control tubing kit
- 3 x heatshrink cable termination tails (650mm per core)
- Earth kit for 11kV cables with copper tape screens
- Mastic tape
- Cable termination installation instructions
➡ Cable Terminations | Cold Shrink 11kV Termination | Heat Shrink 11kV Termination

The cables have been terminated using heat shrink cable terminations and bolted to the copper busbar using crimp or mechanical shearbolt 11kV cable lugs. The 11kV copper wire screens have been bundled and bonded to an earth point using brass type mechanical lugs.
Note the smooth and even completed finish of the anti-track heat shrink (coloured red) to the cable termination evidencing the subtle skill of the cable jointer to avoid over-heating or localised scorching to the heat shrink tubes by inconsistent application of the naked flame from the heat shrink gas torch.
Should you require any assistance with the selection or specification of heat shrink terminations or cable joints for medium/high voltage electrical cables and power systems please do not hesitate to contact us.
Thorne & Derrick Specialist Electrical Distributor
LV ♦ MV ♦ HV
T&D distribute the most extensive range of LV, MV & HV Cable Jointing, Terminating, Installation & Cable Pulling Equipment – we service UK and international clients working on underground cables, overhead lines, substations and electrical construction at LV, 11kV, 33kV and EHV transmission and distribution voltages.
- Key Products: MV-HV Cable Joints & Terminations, Cable Cleats, Duct Seals, Cable Transits, Underground Cable Protection, Cable Jointing Tools, Feeder Pillars, Cable Ducting, Earthing & Lightning Protection, Electrical Safety, Cable Glands, Arc Flash Protection & Fusegear.
- Distributors for: 3M, ABB, Alroc, Band-It, Catu, Cembre, Centriforce, CMP, Elastimold, Ellis Patents, Emtelle, Furse, Lucy Zodion, Nexans Euromold, Pfisterer, Polypipe, Prysmian, Roxtec.

LV – Low Voltage Cable Joints, Glands, Cleats, Lugs & Accessories (1000 Volts)

MV HV – Medium & High Voltage Cable Joints, Terminations & Connectors (11kV 33kV EHV)

Cable Laying – Underground Cable Covers, Ducting, Seals & Cable Pulling Equipment
More…
T&D’s Power Blog covers: LV MV HV & EHV Transmission & Distribution, Substations, Switchgear, Cable Jointing & Termination, Cable Fault & Repair, Underground Cables.

Raychem Cable Terminations – HV High Voltage Outdoor Substation 88kV
April 11th, 2018
- Application: Terminating HV High Voltage Outdoor Substation 88kV
- Cable Type: Nexans
- Cable Termination Manufacturer: Raychem Cable Terminations
- Cable Jointer: Henry Kriek High Voltage Jointer at CBI Electric Power Installations
Cable Terminations
Raychem cable terminations using heat shrink technology can operate under severe environmental conditions for connecting and terminating MV HV cables in both indoor and outdoor applications.
Polymeric insulated cables of various designs and cross sections can be adopted with respect to shielding and metal sheath. Composite housings with different creepage lengths up to 50 mm/kV are available for the most common and also extreme pollution levels according to IEC 60071-1 and IEC 60071-2.
Brugg cable stripping tools were used by the cable jointer to strip tand prepare the single core high voltage 2500sqmm XLPE insulated cables.

High voltage products help enhance the safety, reliability and efficiency of power networks while minimising environmental impact in applications such as substations, power transmission, enabling smart grid and enhancing eco-efficiency.
Operating and maintaining high voltage systems requires experienced operatives with specialist skills.
CBI Electric African Cables
Since 1935, African Cables, now CBI-electric: African Cables designs and manufactures a comprehensive range of MV HV electric power cables at its Vereeniging factory.
CBI-electric: African Cables is the only cable manufacturer in Southern Africa to supply a range that meets any user requirement, irrespective of load. Included in this manufactured range are low voltage PVC/XLPE insulated cable; medium voltage XLPE; paper-insulated cable, aerial Bundled Conductor (ABC), ACSR and high voltage XLPE insulated cable.
Should you require any assistance with the selection or specification of MV HV cable joints or terminations please do not hesitate to contact us.
Thorne & Derrick Specialist Electrical Distributor
LV ♦ MV ♦ HV
T&D distribute the most extensive range of LV, MV & HV Cable Jointing, Terminating, Installation & Cable Pulling Equipment – we service UK and international clients working on underground cables, overhead lines, substations and electrical construction at LV, 11kV, 33kV and EHV transmission and distribution voltages.
- Key Products: MV-HV Cable Joints & Terminations, Cable Cleats, Duct Seals, Cable Transits, Underground Cable Protection, Cable Jointing Tools, Feeder Pillars, Cable Ducting, Earthing & Lightning Protection, Electrical Safety, Cable Glands, Arc Flash Protection & Fusegear.
- Distributors for: 3M, ABB, Alroc, Band-It, Catu, Cembre, Centriforce, CMP, Elastimold, Ellis Patents, Emtelle, Furse, Lucy Zodion, Nexans Euromold, Pfisterer, Polypipe, Prysmian, Roxtec.

LV – Low Voltage Cable Joints, Glands, Cleats, Lugs & Accessories (1000 Volts)

MV HV – Medium & High Voltage Cable Joints, Terminations & Connectors (11kV 33kV EHV)

Cable Laying – Underground Cable Covers, Ducting, Seals & Cable Pulling Equipment
More…
T&D’s Power Blog covers: LV MV HV & EHV Transmission & Distribution, Substations, Switchgear, Cable Jointing & Termination, Cable Fault & Repair, Underground Cables.

Eliminate Arc Flash To Minimise Downtime & Repair Costs At The Circuit Breaker
April 11th, 2018
Guest Post By: Melissa Payne Marketing Executive at IPU Ltd
Industrial Power Units Limited offer arc flash protection systems for switchgear consisting of a protection relay and arc flash detection sensor. It is estimated that there are 8 to 10 arc flash incidents every week in the UK with switchgear often being neglected from protection even though accidents are a common occurrence causing devastating consequences.

Arc Flash Protection System
Arc Flash Protection System Configuration
This short animation shows a basic configuration set-up of an arc protection system. This Arcteq system features AQ110 and 3 AQ101 relays, along with several point sensors. This comprehensive set-up will allow for rapid arc detection (just 2 ms). The quick tripping of the circuit breaker will result in less damage from the arc or arc flash to both electrical equipment and personnel working nearby because it cannot reach full velocity.
Arc Flashes Explained
An arc flash can be produced as the result of a short circuit between different live conductors, a short circuit between a live conductor and an earth under a fault condition, or by separating live conductors during operational conditions.
The result is a powerful explosion of energy. The explosion will vaporise switchgear components as temperatures reach 20,000°C. The direct costs from this are undoubtedly high. The indirect costs from lost production can be even higher.
Arc flash and protection simply cannot be ignored.
Arc Flash Protection
Giving employees arc flash clothing and PPE is the standard response to the threat of arc flashes. Whilst this is an important step to take to protect employees, it won’t protect your equipment. It won’t prevent disruption to your business.
The AQ100 arc flash relay recognises an arc fault through light detection only or a combination of overcurrent and light detection. The relay then sends a trip command to the circuit breaker nearest to the fault. The breaker is opened, the current cut and the arc eliminated.
It takes just 30ms for the arc flash to reach maximum pressure and 100ms for temperatures to reach 20,000°C. The AQ100 arc flash relay will detect the fault in just 2ms and will send the trip command to eliminate the arc in less than 7ms. The ultra-fast speed of the tripping means damage will be limited to just a small section of the LV MV HV switchgear and electrical equipment.
And with selective tripping available, just the circuit breaker of the feeder affected by the fault will trip. The rest of the feeders will stay functional.
The ultra-fast reaction of the AQ100 system will ensure the safety of operating personnel even during an arc flashover.
Don’t underestimate the importance of protecting your equipment as well as your employees.

Life Saving Protection Against Arc Flash – whether working on underground substation cables or overhead transmission lines. Image: Allteck Power Line

Arc Flash 11kV Substation Blast – devastating effects on medium voltage electrical equipment, cables and circuits.
About Industrial Power Units Limited
IPU Group is a privately owned industrial company based in the UK, in West Bromwich, West Midlands – designing, manufacturing and distributing high quality parts and systems for critical diesel and gas engine applications.
IPU supply engineered solutions into other industries where reliability, performance and safety are paramount including: Oil & Gas, Marine, Industrial Engines, Mining & Quarrying and Land Based Industries.
Call +44 (0)121 511 0400
Email: [email protected]

Arc Flash | Polo Shirts | Jackets | Coveralls | Sweatshirts | Helmets | Insulating Gloves

Thorne & Derrick International supply arc flash clothing and protection equipment including coveralls, gloves, helmets, face shields and general head-to-toe PPE is used to protect against flashover – complete range of insulating matting is also available for worker protection when exposed to energised electrical switchgear and transformers.
Typical applications include LV, HV & EHV cable jointing and terminating, fuse pulling, switchgear commissioning, racking circuit breakers, electrical switching and live working on medium and high voltage electricity networks.
T&D are national distributors LV, MV & HV Cable Installation, Jointing, Substation & Electrical Equipment – we service UK and global businesses involved in cable installations, cable cleating, cable jointing, substation, overhead line and electrical construction at LV, 11kV, 33kV and EHV.
Since 1985, T&D have established an international reputation based on SERVICE | INTEGRITY | TRUST.
Contact us for 3M Electrical, ABB, Alroc, AN Wallis, CATU Electrical, Cembre, Centriforce, CMP, CSD, Elastimold, Ellis Patents, Emtelle, Euromold, Filoform , Furse, Lucy Electric & Zodion, Nexans, Pfisterer, Polypipe, Prysmian, Roxtec, Sicame, WT Henley.
Invitation
Thorne & Derrick invite you to join LinkedIn’s largest LV-HV Electrical Discussion Group : Low & High Voltage Power, Cabling, Jointing & Electricals. Discussion subjects include cable installations, cable jointing, substation, overhead line and electrical construction at LV, 11kV, 33kV and EHV. Network, engage and promote your profile, company or products with over 10,000 influencers.
Heat Shrink Cable Termination Connecting 20kV Cable To High Voltage Metering Cabinet
April 11th, 2018
- Application: Cold Shrink & Heat Shrink Cable Termination
- Cable Termination: Raychem TFTI CS Cable Termination & Renley Metering Cabinet
- Cable Jointer: Richie Rice EHV Cable Jointer at Hi-Volt Jointing Solutions
- Featured Manufacturer: Raychem & Renley Ltd
Cable TerminationS
Raychem TFTI
Raychem TFTI is a high voltage cold shrink, cold-applied cable termination designed with an extended neck to cover the mechanical shearbolt cable lug connection. Additional anti-track heat shrink tubing has been applied onto the MV HV cable sheath jacket for the centre phases to achieve enhanced electrical insulation between copper wire shield and the medium/high voltage busbar – the cold shrink terminations provide safe cable connections for working in potentially explosive atmospheres such as MV HV substations where flammable gas could be present.
The cable conductors are terminated using either crimp (compression) or mechanical (shearbolt) high voltage cable lugs from manufacturers such as Cembre or Pfisterer SICON.

HV Cold & Heat Shrink Cable Termination Connecting 20kV Cable To HV Cabinet

Raychem TFTI CS Termination

Renley Ltd Metering Cabinet

Heat Shrink & Cold Shrink, Cold-Applied Cable Termination
Should you require any assistance with the selection or specification of heat shrink cable terminations or joints please do not hesitate to contact us.
Thorne & Derrick Specialist Electrical Distributor
LV ♦ MV ♦ HV
T&D distribute the most extensive range of LV, MV & HV Cable Jointing, Terminating, Installation & Cable Pulling Equipment – we service UK and international clients working on underground cables, overhead lines, substations and electrical construction at LV, 11kV, 33kV and EHV transmission and distribution voltages.
- Key Products: MV-HV Cable Joints & Terminations, Cable Cleats, Duct Seals, Cable Transits, Underground Cable Protection, Cable Jointing Tools, Feeder Pillars, Cable Ducting, Earthing & Lightning Protection, Electrical Safety, Cable Glands, Arc Flash Protection & Fusegear.
- Distributors for: 3M, ABB, Alroc, Band-It, Catu, Cembre, Centriforce, CMP, Elastimold, Ellis Patents, Emtelle, Furse, Lucy Zodion, Nexans Euromold, Pfisterer, Polypipe, Prysmian, Roxtec.

LV – Low Voltage Cable Joints, Glands, Cleats, Lugs & Accessories (1000 Volts)

MV HV – Medium & High Voltage Cable Joints, Terminations & Connectors (11kV 33kV EHV)

Cable Laying – Underground Cable Covers, Ducting, Seals & Cable Pulling Equipment
More…
T&D’s Power Blog covers: LV MV HV & EHV Transmission & Distribution, Substations, Switchgear, Cable Jointing & Termination, Cable Fault & Repair, Underground Cables.

Cable Jointer Training – Live LV Jointer Competency Training Courses
April 10th, 2018
Providing Competency Training Courses For Cable Jointers LV
-
By Chris Dodds - Thorne & Derrick Sales & Marketing Manager
Pragmatic Consulting Ltd have been approved to deliver under EUSR – Competency Accord Unit 060 Live LV Cable Jointing Training Courses.
Pragmatic Consulting offer a range of courses that meets the needs of the Cable Jointing, Electrical and Utility Power Industry and are prepared to travel and provide cable jointer training events across the UK so that you are able to have training when it suits you.
Pragmatic Consulting approach each Cable Jointer Training Course in an individual manner to ensure candidates who pass through the door are trained to the highest standard whilst ensuring that they receive the support they require to help them progress and achieve.

Training: Live Cable jointing On Mains Cables
Cable Jointer Training Courses
After successful completion of the Cable Jointers Training Course and assessment the candidate will then need to complete a period of supervised on job experience, before returning with his / her evidence portfolio and undertake a formal cable jointing skills and knowledge assessment – this will preserve trade integrity and protect employers against under-skilled labour causing reputational damage to the industry.
On successful completion of their portfolio, witness testimonies and further assessment each candidate will then be eligible to have their achieved competence modules registered on the Energy and Utility Skills Register (EUSR) for acceptance as a level of Competence by member Companies of the Industries Competency Accord scheme.
This is cable jointer training and assessment and not authorisation.
Power Unit 060 has been split this into 3 separate cable jointing courses:
- LV1 – Introduction to LV Cable Jointing – Single & Three Phase Services
- LV2 – LV Polymeric (Wavecon) Main Cable Three Phase Jointing Course
- LV3 – LV Transition Polymeric (Wavecon) to PILC STA Main Cable – 3 Phase Jointing Course
- Location: Cable Jointer Training Centre – Stoneleigh Park, Warwickshire
Cable Jointing Training Dates

LV1 Training Course
- 23rd April to 27th April 2018
- 18th June to 22nd June 2018
- 20th August to 24th August 2018
LV2 Training Course
- 16th April to 20th April 2018
- 11th June to 15th June 2018
- 2nd July to 6th July 2018
LV3 Training Course
- 4th June to 8th June 2018
- 9th July to 13th July 2018
- 6th August to 10th August 2018
EUSR help employers to develop industry recognised schemes of learning and register individuals’ skills and competencies on their register.
The EUSR provide workshops to approve trainers for Passport Schemes such as Safety, Health & Environmental Awareness (SHEA) Water Hygiene and Cross Country Pipelines Health Safety & Environmental (CCPHSE).


Power Unit 060
Live Low Voltage Cable Jointing
This cable jointer training specification has been developed from the power network standard. The specification details the required skills, knowledge and behaviours to establish competence to carry out live jointing procedures on low voltage mains cables.
The specification details the requirements for TWO separate low voltage categories. Candidates will be assessed and receive registration for BOTH of the following categories:
- LV Cable (XLPE)
- LV Mains Cable (Consac and / or PILC)
The specification details the critical requirements of the activity to establish competence and does not preclude employers from adding to the skills and knowledge detailed by the specification in their own training programmes.
What does competence look like?
LVJ1 Course – The cable jointer will be able to confidently carry out a range of live low voltage electrical cable jointing procedures on underground cables in accordance with company procedures.
LVJ2 Course – The cable jointer will demonstrate a safety conscious approach to the control of hazards associated with the activity whilst working and communicating effectively with other team members to achieve tasks.
What do I need to take this module?
Candidates to be assessed as competent in this skill area should have completed the modules shown below or have evidence demonstrating an equivalent level of competence:
- SHEA Power (Revised Version) – providing basic health, safety and environmental awareness and an introduction to specifactors relating to the power sector
- Access, Movement and Egress (Underground Cables) – an industry assessment of a person’s competence to enter, move around and exit an underground cable work area in a safe manner
- Location and Avoidance of Utilities – an industry assessment of a person’s competence to identify and locate utilities using electronic location equipment
- Safe Excavation of Utilities – an industry assessment of a person’s competence to safely use hand tools and hand held power tools to excavate and maintain excavations
Performance Criteria
To achieve this unit, you will need to be able to:
General Requirements
P1. Identify the cable jointing work area to be accessed using available information
P2. Select and wear the PPE required to carry out the cable jointing activity
P3. Carry out a site specific risk assessment of the cable jointing area, identifying hazards and the control measures required including justification for live working (requirements included in SHEA Power and BESC / AME Underground Cables)
P4. Implement the control measures necessary to meet safety requirements for activity e.g. barriers, signage and lighting
P5. Communicate the risks and control measures to the working party
P6. Carry out a pre-use inspection of the cable jointing tools and equipment to be used inspecting for condition and service information
P7. Assess and confirm the work space is adequate for the jointing task to be carried including suitable access / egress, lighting and protection from adverse weather
P8. Identify the correct underground cable to be worked on using company procedures
P9. Carry out a visual inspection of the integrity of cables to be worked on and jointed
P10. Use approved tools to prepare and joint cables in accordance with company working procedures
P11. Carry electrical testing of the cable to confirm its integrity, including insulation continuity testing (PILC and CONSAC to include moisture testing)
P12. Confirm cable joint measurements and tolerances meet with joint specifications and requirements
Task Specific Training – Live Low Voltage Mains Jointing
Complete ALL of the following cable jointing procedures in BOTH of the following categories.
P13. LV XLPE Cable (Mains and Service)
a) Service straight through cable joint (single and three phase)
b) Service cable termination (single and three phase)
c) Service pot end joint (single and three phase)
d) Multi service cable joint (single and three phase)
e) Terminate LV mains cable
f) Mains straight through joint
g) Mains breeches joint
h) Mains pot-end joint
i) Cable sheath repairs
P14. LV Cable Consac and / or PILC (Mains and Service)
a) Transition service straight through joint (single and three phase)
b) Service pot end PILC joint (single and three phase)
c) Multi service joint off PILC and / or Consac (single and three phase)
d) Transition mains straight through joint
e) Transition mains breeches joint
f) Mains pot-end (PILC and / or Consac)
P15. Carry out post connection testing procedures including voltage, polarity, earth loop impedance, phase rotation
P16. Install joint protection to ensure connections are protected from ingress of moisture and mechanical damage
P17. Record cable joint positions and test results in accordance with company procedures
P18. Dispose of hazardous and non-hazardous waste materials in line with company procedures
P19. Store tools and equipment safely and securely and leave the work area work in a safe condition in accordance with company procedures

Cable Jointer: Billy Ayling
Cable Jointer Training Knowledge & Understanding
To achieve this unit, you will need to know and understand:
General Requirements
K1. The principles of Health, Safety and Environmental legislation in relation to work on or near electrical power networks and cables
K2. The organisation’s safety rules, policies and procedures relating to work on or near electrical power networks
K3. The hazards associated with work on or near electrical power networks and how to deal with them
K4. How to select, inspect and use PPE for work on or near electrical power networks
K5. How to carry out a site specific risk assessment and identify workplace hazards
K6. The dangers of electricity and how an electric shock can be received including: direct contact, induced voltage and arcing
K7. The roles and responsibilities of the relevant person/s involved in the control of the jointing procedure
K8. How to complete relevant company safety documentation for control of the LV network
K9. The effect of adverse weather conditions on jointing activities
K10. How to respond in the event of emergency situations in the work environment, including electric shock
K11. How to deal with hazardous and non-hazardous waste materials in accordance with company procedures
K12. How to leave an underground work area in a safe and secure condition. e.g. signs, lighting and barriers
K13. How to update, report and record information in accordance with company procedures
Task Specific Training – Live Low Voltage Mains Jointing
K14. How to interpret utility drawings / control diagrams to identify underground cables and apparatus
K15. How to interpret manufacturers’ jointing specifications / company procedures
K16. How to select, inspect and use approved tools and equipment for live low voltage jointing procedures
K17. How to positively identify the correct underground service / mains cable/s to be worked on
K18. The different types of earthing systems used on distribution networks
K19. The company live low voltage working procedures and how to apply them
K20. The reasons and requirements of maintaining earth continuity
K21. The test values for pre and post electrical testing of underground low voltage cables
K22. How to interpret the test results obtained from electrical testing

Book Cable Jointer Training Course
How To Book Your
Jointer Training Course
For further information on the courses that Pragmatic Consulting offer please contact Jo Niblett (Managing Director).
Tel: 01926 674340
Mob: 07747 740311
Email: [email protected]

THORNE & DERRICK are national distributors of LV, MV & HV Cable Installation, Jointing, Duct Sealing, Substation & Electrical Equipment – we service UK and global businesses involved in cable installations, cable jointing, cable cleating, substation, overhead line and electrical construction at LV, 11kV, 33kV and EHV.
Since 1985, T&D have established an international reputation based on SERVICE | INTEGRITY | TRUST.
Contact us for 3M Electrical, ABB, Alroc, AN Wallis, CATU Electrical, Cembre, Centriforce, CMP, CSD, Elastimold, Ellis Patents, Emtelle, Euromold, Filoform , Furse, Lucy Electric & Zodion, Nexans, Pfisterer, Polypipe, Prysmian, Roxtec, Sicame, WT Henley.
Invitation
Thorne & Derrick invite you to join LinkedIn’s largest LV-HV Electrical Discussion Group : Low & High Voltage Power, Cabling, Jointing & Electricals.
Discussion subjects include cable installations, cable jointing, substation, overhead line and electrical construction at LV, 11kV, 33kV and EHV. Network, engage and promote your profile, company or products with over 10,000 influencers.

