Reyrolle LMV Switchgear
Credit: Mikolaj Kukawski | Customer Networks Manager at ESM Power Ltd
Featured Manufacturer: Reyrolle
Mikolaj is an experienced Private HV Networks Manager with a demonstrated history of working in the utilities and 
medium/high voltage (MV HV) sectors of industry.
Skilled in MV HV Electrical Power Distribution Systems operation, maintenance and asset replacement. Strong operations professional with SAP experience up to 132kV for both private and DNO networks.
ESM Power design, deliver and manage LV MV HV electrical networks safely, securely and economically – this includes ICP and DNO connections at LV, 11kV, 33kV and 132kV.
âž¡ See complete Switchgear MV HV Album.
Switchgear MV HVÂ | Thorne & Derrick distribute Nexans Euromold, 3M Electrical, PFISTERER Connex, Prysmian and Shrink Polymer Systems ranges of Joints, Terminations & Connectors to enable the installation and maintenance of electrical switchgear, transformers and substations.
T&D supply Cables, Accessories & Electrical Products for Low Voltage (LV 230V to 1000V), Medium Voltage (MV 3.3kV/11kV to 33kV) and High Voltage (HV 33kV to 132kV) networks.
Subscribe now to our POWER NEWSLETTER– a monthly email circulation packed with news, projects, videos, technical tips, training information, promotions, webinars, career opportunities and white papers.
Includes access to our popular JOINTERS BLOG with contributions from utility professionals, linesmen and cable jointers working on MV HV EHV cables and overhead lines typically at 11kV, 33kV, 66kV and up to 132kV.
15,000+ Subscribers. ➡Â
Joints | Terminations | Connectors | Cables & Accessories LV MV HV
Thone & Derrick | Sudkabel Approved Distributor | Joints, Terminations & Connectors | Specification & Supply
About Dave Boyd
Dave has worked as a Cable Jointer for over 20 years starting his career with YEB (Yorkshire Electricity Board) in Huddersfield, England – this included developing a skill-set and competency to work and joint on numerous cables ranging from paper lead street lighting cables to 33kV oil filled medium voltage power cables.
With this background and experience Dave emigrated to Perth, Western Australia where he commenced employment with Western Power – Dave subsequently managed the transmission underground system having gained 132kV manufacturer certifications and accreditations with ABB and LG.
Dave left Western Power and established a new company, Complete Cable Jointing Australia (CCJA), of which he was a co-owner. After five 
successful years CCJA voluntarily disbanded and ceased trading.
Today, Dave is Managing Director of HV Cablepower Pty Ltd.
Their team of HV EHV Jointers are factory trained with ABB (up to 420kV), LG, Tyco, Pfisterer, Prysmian, Sudkabel (up to 245kV) and Brugg Cables (up to 500kV).
Subscribe now to our POWER NEWSLETTER– a monthly email circulation packed with news, projects, videos, technical tips, training information, promotions, webinars, career opportunities and white papers.
Includes access to our popular JOINTERS BLOG with contributions from utility professionals, linesmen and cable jointers working on MV HV EHV cables and overhead lines typically at 11kV, 33kV, 66kV and up to 132kV.
15,000+ Subscribers. âž¡Â
About Dean Page
Dean Page is a LV 11kV and 33kV Jointer – with extensive knowledge and work experience on all aspects of LV-HV cables such as XLPE-SWA, PILC, Consac and Triplex. Daily work tasks include LV connections and service work, installation of 11kV substations and associated LV mains infrastructure. Dean is Certificated for the installation of Pfisterer CONNEX and Nexans Euromold type inner and outer cone separable connectors for terminating 33kV cables into gas insulated switchgear.
Cable protection covers, tapetiles and underground warning tapes are installed over LV, MV and HV power cables in trench and ducted cable installations with high visibility colour providing a visual warning of danger when excavating cables. 11kV and 33kV cable protection tapes (Tapetile and Stokbord covers) are manufactured from heavy duty plastic for reliable protection.
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.
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
T&D’s Power Blog covers: LV MV HV & EHV Transmission & Distribution, Substations, Switchgear, Cable Jointing & Termination, Cable Fault & Repair, Underground Cables.
arrow: Visit Power Blog
uploaded by Chris Dodds | Thorne & Derrick Sales Marketing Manager
Thorne & Derrick International, based in the UK, recently signed a Sole UK Distributor Agreement with regional exclusivity to the North East of England for the SecurEx range of ATEX & IECEx Certified access control and security products – these high security locking systems are specified to provide asset security against vandalism, theft and damage in hot-spot crime areas and workplace locations with potentially explosive atmospheres.
Door Locking & Security Systems
Due to a recent spike in criminal activity on the UK rail industry there has been an urgent requirement to improve security and protection to critical sections of railway stations and infrastructure – this includes main battery rooms categorised as CNI sites.
The site is both a Critical National Infrastructure security risk with a potential explosive atmosphere risk due to the dangers of venting battery gas presenting flammable risks.
According to the ATEX Directive this location is categorised as a Zone 1 hazardous area location due to the incidence and duration of a flammable gas atmosphere likely to occur occasionally in normal operation. This could occur in the battery room because of repair, maintenance operations, or leakage as well as deliberate criminal intent.
61,000 crimes were reported on the UK Rail Network in 20187-2018 – 9% of criminal damage was attributed to Malicious Mischief, f1.
Obviously, this is a high security area requiring high security hazardous area doors and locking systems.
To combat crime and ensure site safety a Sx Ex Abryll in a SATE handle escape with LPCB Level 4 configuration was supplied – the lock was fitted to an Abloy High Security Steel door.
This lock is the only high security lock with ATEX & IECEx certification.
Product Information âž¡ High Security Locks for Zone 1 ATEX Battery Rooms
SX EX ABRYLL High Security Lock: Single Point Locking System can be configured with a multitude of functions including Panic and Emergency Escape, Mechanical and Electro-Mechanical Deadlocking. Certified for Ex Zones 1, 2, 21 and 22 hazardous areas.
Glossary
CNI: Critical National Infrastructure – national Infrastructure are those facilities, systems, sites, information, people, networks and processes, necessary for a country to function and upon which daily life depends. In the UK, there are 13 national infrastructure sectors including Transport.
ATEX: ATmosph̬res EXplosives Рthe ATEX directive consists of two EU directives describing what equipment and work space is allowed in an environment with an explosive atmosphere.
LPCB: Loss Prevention Certification Board – the leading international Certification Body in the fields of security and fire protection.
f1 Source Williams Rail Review – the Williams Rail Review was established in September 2018 to look at the structure of the whole rail industry and the way passenger rail services are delivered. The review will make recommendations for reform that prioritise passengers’ and taxpayers’ interests.
Further Reading
Credit: Williams Report
Thorne & Derrick stock an extensive range of 400V-33kV Rail Cable Accessories & Power Distribution Sytems including feeder pillars to contractors undertaking Low Voltage Power Distribution, HV Electrification & Substations, DC Traction & Networks, OLE and Track Feeder Cable Renewals – complete range of Network Rail PADS approved track terminations, cable joints, cable repair and connection products up to 25kV, including 3M Cold Shrink, Pfisterer CONNEX and Nexans Euromold products.
Full range of Cable Pulling Equipment & Products to ensure safe and efficient of rail cables in to cable ducts and containment infrastructure including cable troughs.
Thorne & Derrick are Approved Vendors to Network Rail and TfL.
Image: Tom Sowerby (Director at Hembry High Voltage Services)
Jointing Kits Installed: 11kV Lovink | 11kV 3 Core XLPE PILC Tyco Raychem Shrinkset | 33kV Tyco Raychem Straight Joint (NPG)
Despite challenging and awkward working conditions including confined spaces, contamination and muddy cable trenches the Jointer demonstrates exemplary personal skills to ensure cable preparation standards are to the highest industry levels.
The workmanship was attained using a combination of precision engineered specialist cable jointing tools – the tools used included Boddingtons manufactured semicon stripping tools and Alroc brand tools to strip the primary insulation (XLPE) and outer sheath jackets from the high voltage cables.
Routinely, the Competent Jointer takes care and pride in workmanship and thoroughly polishes the XLPE insulation prior to the installation of joints, terminations or connectors.
“An excellent example of radial semicon layer cutbacks in a challenging environment. Provided the rest of the cable joint components are installed properly these cables would likely pass a factory comparable partial discharge test in the field and provide long reliable service,” commented Ben Lanz.
Ben Lanz is Director of Applications Engineering at IMCORP USA and has expert technical oversight of power cable life cycle consulting (5kV-500kV). Ben has published several technical papers on power system reliability, asset management, diagnostics and regularly presents on the topics. He is a Senior Member of the IEEE Power & Energy Society, a voting member of the IEEE Standards Society, and a member of the IEEE Dielectrics and Industrial Applications Societies. He has served as Chairman of the Insulated Conductors Committee (ICC) technical committees responsible for cable testing, cable reliability and surge arresters.
Hembry High Voltage Services provide high voltage electrical cabling, jointing and fitting services across the whole of the UK’s Electrical Power Network:
Hembry High Voltage Services operate in all environments, offshore, onshore, commercial, industrial, waste water treatment works, petrochemical, power stations, substations and are specialists in the renewable sector.
Get In Contact
Subscribe now to our POWER NEWSLETTER– a monthly email circulation packed with news, projects, videos, technical tips, training information, promotions, webinars, career opportunities and white papers.
Includes access to our popular JOINTERS BLOG with contributions from utility professionals, linesmen and cable jointers working on MV HV EHV cables and overhead lines typically at 11kV, 33kV, 66kV and up to 132kV.
15,000+ Subscribers. ➡ 
Published 22 May 2026
The following article on Cable Asset Management has been published with the kind permission of ERPA. ERPA (Electric Power Reliability Alliance) are a collaborative practitioner community that works to advance awareness and understanding of electric power reliability. ERPA are...
Published 22 May 2026
Restoring transformer termination integrity with LoviSil A Modern Solution for Ageing PILC Networks UK DNO Approved For 25 Years+ When a major site recently experienced a fault on an 11kV transformer termination, the challenge was clear: restore the system...
