Thorne & Derrick are leading suppliers of cable lugs and associated crimping tools from Klauke for Low, Medium & High Voltage Cables – this includes battery operated crimping tools with hexagonal crimping dies.
Hexagonal crimping is one of the more traditional crimping profiles. It is most frequently used in practice, as it is suitable for both copper and aluminium conductors. With this crimping profile, the single strands are deformed over a large horizontal area.
Hexagonal crimping is typically used for copper compression cable lugs according to DIN 46235 and aluminium compression cable lugs according to DIN 46329. This crimping profile can also be used to crimp solid cables with full tension.
Hexagonal crimps can be found in panel building industries as a manufacturer specific crimp and also as a DIN standard lug crimp for example in utilities (aluminium and copper conductors including 11kV and 33kV power cables).
The major benefit of hexagonal crimping relates to the central application of force, which is applied in equal measure from all sides and has an effect over a large contact surface. The individual stranded wires of the conductors are deformed as a whole in equal measure without being damaged.
The result is good mechanical stability and a secure connection.
Due to the consistent crimping involved, hexagonal cable crimping is also suitable for the medium and high-voltage range.
In addition to standardised hexagonal crimping, manufacturer-dependent hexagonal crimping is also allowed in the copper sector for conductor classes according to DIN 60228, Class 2. This crimping has been specifically developed for tubular cable lugs. As a result, it is essential you always revert to a manufacturer-specific system.
Distributed from Stock | Approved Supplier | UK & Export Sales
Freedom of Choice: Wide or Narrow Cable Crimping
Wide and narrow crimping is available depending on the tool selected. This will primarily depend on the cross-section and power of the tool in question. It is possible, for example, to use narrow crimping to crimp a 300 mm² tubular cable lug with a six-tonne battery-powered hydraulic tool. However, this will require several crimpings, something that will of course involve additional time. Therefore, you must take care that you make the right selection when purchasing a tool and ensure it is matched to the range of applications.
Klauke Compression cable lugs according to DIN, Copper
Klauke Compression cable lugs according to DIN, Aluminium
Thorne & Derrick distribute Cable Lugs & Cable Connectors to terminate, splice and joint LV MV HV cables – this includes copper, aluminium and bi-metallic connectors and a complete range of crimping tools for specific use on all Low, Medium & High Voltage cable types.
➡ Associated Brands & Products | Klauke | Cembre | Pfisterer Sicon | Cable Crimping & Cable Cutting Tools
Klauke Cable Crimping & Cutting Tools | the world‘s first battery hydraulic crimping and cable cutting tools with Tri-Insulation Barrier technology that provides users with 1000V protection against electrical shocks.
Jointer Training Course
LV Jointer Training Courses
Avonside Safety Management are industry leaders in the delivery of electrical safety training including LV cable jointer training courses. Offering a range of accredited cable jointing training commonly used with LV cables for jointers with all different levels of experience.
Avonside can provide training both face to face as well as some e-learning to suit the individuals requirements. Learners will attain skills that can be taken and applied to the workplace as they will be prepared to operate in potentially hazardous environments through safely simulating these environments.
JM1 – Cable Jointers Mate
Andrea Tompkins Training Manager at Avonside Safety Management
“Our courses have been endorsed by Energy & Utility Skills meeting the quality standards required by the utility industry.
The Energy & Utility Skills Register is a register of individuals’ training and skills.
Individuals that undertake training and/or assessment on a scheme or programme have this training recorded against their EUSR registration.
Individuals are issued with a unique EUSR ID number as well as a photo ID card upon successful completion – this card also displays the training or skills recorded on EUSR against the individual which can be verified online. EUSR registration is valid for a fixed period of time, usually three years and individuals are required to renew their registrations by undertaking the relevant training once their registration has expired.”
Cable Jointing Training – Industry Leading Courses
Avonside Safety Management are industry leaders in the delivery of electrical safety training.
ASM have industry-leading expertise in cable jointing training. They can train a wide range of joint assembly on all commonly used HV and LV cables, catering from inexperienced operatives through to experienced jointers.
Their trainers have a wealth of industry experience and can offer tailored courses to suit your needs including tooling, cable types, joint types and procedures.
ASM have a dedicated training facility located in Redditch offering a market leading learning environment in both practical and classroom environments.
Tel 01527 864 136 | or visit https://avonside-sm.com/
LV, MV & HV Jointing, Earthing, Substation & Electrical Eqpt
Thorne & Derrick International are specialist distributors of LV, MV & HV Cable Installation, Jointing, Duct Sealing, Substation & Electrical Equipment – servicing UK and global businesses involved in cable installations, cable jointing, substation, overhead line and electrical construction at LV, 11kV, 33kV and EHV.
THORNE & DERRICK 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
Medium Voltage Cable Connections & Accessories
Thorne & Derrick distribute the most extensive range of MV HV Medium & High Voltage Cable Joints, Terminations & Connectors from manufacturers including 3M, Prysmian, Nexans Euromold, Elastimold and Pfisterer CONNEX & SEANEX.
Heat shrink, cold shrink, push-on and slip-over cable accessories enable the jointing, terminating and connection of 11kV-33kV-66kVcables to oil, air or gas insulated switchgear, transformers, motors and overhead lines distributing electricity at medium/high voltages.
T&D hold large stocks of 11kV 33kV 66kV Joints & Terminations suitable for XLPE, PILC and EPR cables, in both heat shrink and Cold Shrink technologies, to service the medium/high voltage power cable accessory requirements of UK and international customers.
Cable Corrosion Solutions & Products
uploaded by Chris Dodds - Thorne & Derrick Sales & Marketing Manager
3M Electrical Products provide an extensive range of cable repair solutions to prevent and overcome cable corrosion for the utilities, renewable energy, solar, construction, rail, mining, offshore, oil, gas and petrochemical industries – cable corrosion tapes and protection products are available to suit both direct burial (underground) and cables located onto containment in both indoor and outdoor installations.
Cable repair solutions are available for low and medium voltage cables suffering advanced cable damage caused by atmospheric steel corrosion – both onshore and offshore galvanised steel wire armoured and wire braided cables are especially vulnerable.
The Problem
Formation of Rust
The overall chemical equation for the formation of rust is:
The pictured low voltage cables evidently have serious damage caused by long-term cable corrosion effects. The cable sheathing has been aggressively damaged and stripped back down to the galvanised steel wire armours. Steel typically corrodes or rusts rapidly in moist or humid conditions and the rate of corrosion accelerates with exposure to salt water, for instance in the marine and offshore industry.
The cable sheath should provide both waterproof and corrosion protection to the steel wire armours and copper conductors – in this case there is an urgent demand to prevent further cable corrosion damage to both the accessible and inaccessible cables strapped and cable cleated to the cable tray.
The complexity of the cable repair is compounded two-fold : the area is a “no-heat” zone designated a hazardous area location Zone 2 according to the ATEX Directive therefore traditional heat shrink cable repair kits are precluded from consideration due to the presence of a potentially explosive atmosphere. Furthermore due to the brittleness of the cables, resultant from significant corrosion damage, it was not an option to man-handle and subject the cables to further physical movement and mechanical strain.
Hydrocarbons in the onshore and offshore oil/gas exploration and production sector seriously impact upon the integrity and ability of cables and cable accessories to provide uninterrupted service – standard polyurethane cable repair and jointing products would overtime degrade to destruction in the presence of aggressive chemicals.
Consequently, 3M Electrical have developed a chemical resistant cable joint utilising their 1402FR resin for harsh and hazardous cable installation environments where hydrocarbon exposure is expected under normal conditions – the Scotchcast resin cable joints have been adopted as specification standard by international oil and gas companies including Exxon Mobil, Chevron, Total and Royal Dutch Shell.
➡ Read our Blog for further information about the selection and specification of cable joints according to the ATEX Directive.
2 solutions to suppress future cable corrosion using 3M Electrical cable repair products :
3M Scotchrap tapes are UV resistant and also resist impact punctures and tears with a very high weather and corrosion proofing performance for use on underground cables.
3M Scotchfil Electrical Putty can also be used to build-up irregular surfaces to provide a smooth, waterproof taping surface around cables where there is localised pitting type corrosion.
Scotchfil putty provides a versatile corrosion resistance solution to general cable and electrical equipment applications, the Scotchfil putty can be wrapped, stretched or moulded to conform to both standard and irregular surfaces.
3M Scotchfil Electrical Putty when over wrapped with either Super 33+ or Super 88 Vinyl Electrical Tape. Scotchfil™ electrical putty can also be used to build up cable joints and fill out major irregularities and voids.
Another type of cable failure is evidenced by visual indication of burning or arcing on the surface of the semiconductive layer of medium voltage cables. If the burning or arcing becomes extensive, the MV cable can fail from the outside in (pictured below).
The MV cable failure cause was determined to be a damaged cable sheath or jacket, which created a flowpath for corrosive ground water to penetrate the cable and cause severe corrosion to the metallic shield.
Scotch 70 silicone rubber electrical tape is a high temperature arc-and track-resistant tape composed of self-fusing, inorganic silicone rubber and easy-tear and easy-strip liner – the Scotch 70 tape is used as an over-wrap for protection of high voltage terminations and cables against arcing and tracking.
Some Further Reading : Corrosion Types Encountered With Power Cables : Underground Cables and Anodic Corrosion (Stray DC Currents), Cathodic Corrosion, Galvanic Corrosion, Chemical Corrosion, AC Corrosion, Local Cell Corrosion. By Edvard Csanyi (Electrical Engineering Portal EEP).
Whatever the cable condition or type of installation, 3M can provide innovative cable corrosion protection solutions based on Scotch electrical tapes, Scotchcast resin, heat shrink, cold shrink or spray based technology.
Thorne & Derrick stock and distribute LV Joints in Cold Shrink, Heat Shrink or Resin Cast technologies – multicore and multi-pair cable joints are available for immediate backfill and energisation of Low Voltage power, control and instrumentation cables 600V/1000V 3.3kV.
Complete range of LV Cable Accessories ➡
Cable Breakouts | Cable Caps | Cable Lugs | Cable Cleats | Cable Trough | Cable Duct | Feeder Pillars | for 11kV/33kV/66kV networks see MV HV Joints & Terminations
Pfisterer | Nexans Euromold | Prysmian | Cable Joints & Terminations MV HV
Cold Shrink by 3M | Joints | Abandonment | Terminations | Low Voltage LV Cables
Reliable 3M Electrical Solutions That Help Keep Your Power On
Since 1985, Thorne & Derrick have been Authorised Distributors for the 3M Electrical range of Low & Medium Voltage Cable Accessories for the insulation, connection, repair and provision of reliable electrical power up to 33kV utilising Cold Shrink, heat shrink, Scotch Tape and Scotchcast Resin technologies.
For more than 30 years, 3M Electrical has been a trusted supplier of advanced materials for the solar industry. From engineered films to modular assembly solutions, 3M products are engineered to enhance performance, help improve reliability, and help drive down the critical cost per watt.
As one of the world’s leading suppliers of advanced films, tapes, coatings and adhesives, 3M have the ability to supply products and provide technical support around the world.
11kV | 33kV | 66kV Connections & Energisation
Thorne & Derrick distribute the most extensive range of MV HV Medium & High Voltage Cable Joints, Terminations & Connectors – this includes heat shrink, cold shrink, push-on and slip-over cable accessories enable the jointing, terminating and connection of 11kV-33kV and 66kV-132kV cables to oil, air or gas insulated switchgear, transformers, motors and overhead lines distributing electricity at medium/high voltages.
3M Electrical Products — the right protection for less downtime, fewer interruptions
Insulate, Connect, Protect & Energise
Each letter below represents an electrical construction or maintenance application.
Match all letters that apply to the facility illustration to see all the places where 3M Electrical Products help you deliver efficient, reliable, and sustainable energy solutions.
A |
Insulate Wires and Cables • Repair and re-insulate LV cables and busbar • Repair or replace busbar insulation • Insulate and seal in harsh conditions |
| Connect Wires and Cables • Conductor to conductor (pigtail and inline) • Conductor to flat pad or pin-connection |
|
|
Splice Cables • Splice underground buried and submerged • Splice in cable tray or ductwork • Shearbolt and compression connectors |
| Rejacket and Protect Medium Voltage Cables • Rejacket buried and submerged cable • Provide mechanical and abrasion protection |
|
E |
Terminate Cables • Terminate in switchgear • Terminate live-front busbar connections • Terminate with dead-front separable equipment connection • Terminate in outdoor pole top and substation connection |
| Motor and Equipment Maintenance • Insulate motor lead connections • Repair busbar insulation • Repair metal housing for motors and pumps |
|
|
Be Safe on the Job • Equipment outlet line insulation • Personal protection |
| Protect Cables from Fire, Water or Corrosion • Resist water, oil and chemicals • Resist abrasion, puncture and cut-through • Resist pipe corrosion |
|
|
Fire Protection • Protective wraps • Caulks, putties, foams and large opening solutions • Sprays, sealants and tapes |
| Locate & Mark • Map path and depth of underground assets |
|
|
Maintain & More • Cable identification and cable management • Metal lubrication and rust resistance |
Voltage Rating of 3M Product Applications
Indicates high voltage application (69KV-145KV)
Indicates medium voltage application (5KV- 46KV)
⚫ Indicates low voltage application (<1000V)
| Application | 3M Solution | Faster installation | Outdoor/UV resistance | Low temps performance< 0°C | High temperatures > 105°C | Moisture/humidity | Chemical/corrosion protection | Small or tight spaces | Irregular shapes or sharp edges | No access to cable end | Mechanical protection |
| Connect | Spring Connectors | • | • | • | • | ||||||
| IDC Connectors | • | • | • | • | • | • | |||||
| Direct Bury Kits | • | • | • | • | • | ||||||
| Butt Connectors | • | • | • | • | • | ||||||
| Insulate & Protect |
Vinyl Tapes | • | • | • | • | • | • | • | |||
| Rubber Tapes | • | • | • | • | • | • | |||||
| Mastic Tapes | • | • | • | • | • | ||||||
| Specialty Tapes* | S,C | S,G,V | C,S | C,S | • | • | G,V | ||||
| Motor Lead Kits | • | • | • | • | • | • | |||||
| Heat Shrink | • | • | • | • | • | • | |||||
| Splice & Terminate |
Resins | • | • | • | • | • | • | • | • | ||
| Cold Shrink Splices | • | • | • | • | • | • | |||||
| Compression Lugs & Connectors | • | • | • | • | |||||||
| Terminations | • | • | • | • | • | • | |||||
| Separables | • | • | • | ||||||||
| Locate & Mark |
Locators | • | • | • | • | • | • | • | • | ||
| Markers | • | • | • | • | • | • | • | • | |||
| Maintain & More |
Wire Terminals | • | • | • | • | ||||||
| Lubricants | • | • | |||||||||
| Wire ID | • | ||||||||||
| Cable Ties | • | • | • |
NOTE: Products vary within each category. Not all products will be suitable for all the application requirements listed.
*Speciality Tapes coding: S=silicone, C=corrosion protection, G=glass cloth, V=varnished cambric
Thorne & Derrick are Specialist Distributors to Solar EPC’s & High Voltage Jointing Contractors working on the design, construction and maintenance of UK, European and international projects supplying an extensive range of LV HV Solar Cables, Jointing, Substation & Electrical Eqpt.
Based in the UK, we are highly customer responsive and absolutely committed to providing a world-class service.
We stock LV HV Solar Cables, Accessories & Electrical Equipment to enable the construction, maintenance and operation of utility-scale PV installations – our products connect 600V/1500V solar cables into combiner boxes, inverters, transformers and energise switchgear up to 33kV/132kV for high voltage grid connections.
Since 1985, we have provided expert technical support and express delivery from extensive UK stocks to world-wide destinations.
Further Reading
Electrical Protection For Wind Turbines
Lightning & Surge Protection by DEHN
Ensure smooth operation and protect investments with lightning and surge protection safety equipment from DEHN.
Committed to the protection of workers and material assets, Thorne & Derrick together with DEHN can offer electrical protection specifically for wind turbines with a range of innovative products.
Thorne & Derrick provide an extensive range of electrical safety equipment including insulating gloves, voltage detectors, insulating matting and portable earthing to ensure worker safety when carrying out maintenance on LV-HV switchgear, substations, cables and electrical equipment.
Electrical Safety Products for LV MV HV Cables, Conductors, Substations & Earthing
The feed-in remuneration for renewables is sinking worldwide and putting the wind branch under increasing pressure. To ensure that investments in new wind turbines pay off in future, too, the top priority is to optimise the availability of the turbines. This prevents loss of revenue due to downtime and high service and repair costs.
Their height makes wind turbines particularly susceptible to destructive lightning events. If insufficient protective measures are taken, the risk of damage and downtime due to lightning is correspondingly high. An integrated lightning protection system is therefore a must.
It consists of external and internal lightning protection, earthing and equipotential bonding.
Take the safe option and entrust the globally recognised specialist DEHN with your lightning and surge protection. Our high-quality and durable products protect turbines on all continents, from the foundations to the rotor blades. Take advantage of our services and make quicker and verifiable progress. We can assist you by, for example, conducting risk analyses, creating bespoke protection concepts and product solutions, or conducting system tests in our accredited test centre.
To secure the availability of wind turbines, the lightning protection zone concept aims to prevent lightning damage to mechanical and electric components. This is achieved by discharging lightning current and controlling surges.
The lightning protection zone concept for wind turbines described in IEC 61400-24 deals with the topic of lightning protection for wind turbines including detailed information on the selection of lightning and surge protection measures 1).
As the basis for creating a protection concept, a wind turbine is subdivided into lightning protection zones. One distinguishes here between external zones (LPZ 0A und 0B) and internal zones (LPZ 1, LPZ 2…n) 2). The external zones of a wind turbine – except the rotor blade – are determined by way of the rolling sphere method. The subdivision of the internal zones very much depends on the construction of the individual wind turbine and should be conducted accordingly.
Having laid down the relevant lighting protection zones, one can then define the necessary protective measures. It is advisable to create a lightning protection concept at the initial planning stage of a wind turbine to avoid later cost-intensive repairs and retrofitting. Long experience in the field of lightning and surge protection and the numerous system tests conducted for the wind industry have given DEHN the know-how to develop effective lightning protection systems for wind turbines. We will assist you in developing a lightning protection concept for your turbine consisting of external lightning protection, internal lightning protection, equipotential bonding and earthing.
1) IEC 61400-24 Lightning Protection of Wind Turbines
2) LPZ: Lightning Protection Zone
Lightning Current Measuring System Prevents Subsequent Damage
Damage resulting from a lightning strike does not necessarily lead to the immediate failure of the turbine. This means that lightning events often remain undetected, especially in the case of upward flashes where the initial long stroke current flowing is only a few 100 A and can be the main cause of damage, e.g., to the rotor blades.
Continued operation of the turbine can lead to serious subsequent damage. Lightning current measuring systems are often employed to detect lightning events and prevent subsequent damage. However, dangerous upward flashes are not always fully detected due to the low current flow of the measuring system. As well as impulse currents, DEHNdetect also reliably registers these dangerous long stroke currents, thus preventing expensive maintenance work and long downtimes. DEHNdetect identifies the following parameters:
Benefits:
The system can be integrated in the IT infrastructure of the wind turbine via existing interfaces. The data can then simply be read out and managed using the available SCADA systems. If direct integration is not possible, the data can be transmitted to a cloud and evaluated via a web application. This makes it possible to monitor several turbines or even entire wind parks.
Invest in availability to secure the power supply of your turbine, today and tomorrow.
| DEHNdetect Components | ||
| 1 |  |
DEHNdetect BDU Detector for the wireless detection of lightning current in the rotor. |
| 2 |  |
DEHNdetect ICC IMP Measuring coil long stroke current and impulse current. Measuring range 60 A to 250 kA. |
| 3 |  |
DEHNdetect DL Data logger with different interfaces for integration in IT systems. |
| 4 |  |
DEHNdetect integrator Processing of the measuring signals and transmission to the data logger. |
All lightning and surge protective devices by DEHN for application in wind turbines are vibration- and shock-tested in compliance with IEC 60068-2.
Power Supply Systems
By implementing coordinated surge protection measures for power supply systems, the risk of system downtime due to lightning currents and surges can be avoided. This increases the availability of the wind turbine in the long term.
Information Technology Systems
A consistent protection concept prevents damage to information and data systems. Condition monitoring is indispensable for operational safety and plant availablity. The monitoring unit for the condition-oriented monitoring of up to 50 BLITZDUCTORconnect arresters fulfils this task. Remote monitoring is also possible.
| Application | Type | ||
| Power Supply Systems | |||
| 1 |  |
DEHNsolid | Rotor blade heating Coordinated type 1 SPD, with 200 kA discharge capacity and low voltage protection level (Up ≤ 2.5 kV). |
| 2 |  |
DEHNguard M TN CI | Pitch system, aircraft warning light Type 2 SPD, especially space- and cost-saving due to integrated backup fuse. |
| 3 |  |
DEHNguard SE H 1000 VA FM + earthing clip |
Generator Type 2 SPD, further development of the “Neptune circuit” – Advantages: small dimensions save space and costs, improved protection level. |
| 4 |  |
DEHNguard M TNC | Voltage supply
Type 2 SPD |
|
Information Technology Systems |
|||
| 5 |
|
BLITZDUCTORconnect |
Protects signal, bus or control lines |
|
|
DEHNpatch Class E |
Universal type 2 SPD for Ethernet and structured cabling up to 250 MHz. |
|
|
|
BLITZDUCTOR VT |
Weather station |
|
|
|
DEHNrecord IRCM |
Condition monitoring unit for up to 50 BLITZDUCTORconnect arresters. With LED status indication and floating remote signalling contact. |
|
External Lightning Protection
Safe interception and discharge of direct lightning strikes is paramount for the availability of a wind turbine. DEHN ensures that this is the case by testing components like the HVI power Conductor with a lightning current of 200 kA (10/350 μs) as stipulated in IEC 62561. The stainless steel design of the air-termination rods and connection elements fulfils stringent corrosion resistance requirements.
Earthing & Equipotential Bonding
Safe operation of electrical equipment and systems and a well-functioning lightning protection system require an earth-termination system designed according to IEC 61400- 24 1). Connection elements which are capable of carrying short-circuit current ensure the safe contact of the earth-termination system with metal parts of the foundations and the main earthing busbar. A high level of product quality safeguards long-term mechanical strength and corrosion resistance.
| Application | Type | ||
| External Lightning Protection | |||
| 1 |  |
HVI power Conductor (in supporting tube with air-termination rod)) |
Class of LPS 1 – 200 kA (10/350 μs) – High-voltage-resistant, insulated down conductor for maintaining the separation distance. |
 |
HVI power long Conductor (cut to length) |
Individual lengths, on request we can assemble your conductors with the appropriate connection elements. |
|
 |
UNI disconnection clamp 200 kA | 200 kA lightning current carrying capability according to IEC 62561- 1 2), stainless steel V2A. |
|
 |
KS connector 200 kA | 200 kA lightning current carrying capability according to IEC 62561- 1 2), stainless steel V2A. |
|
 |
MV clamp 200 kA |
200 kA lightning current carrying capability according to IEC 62561- 1 2), stainless steel V2A. Lightning current carrying connection of the air-termination system and down conductor. |
|
 |
Tubular air-termination rod |
Safe interception of the flash charge in permanently corrosionresistant, stainless steel design. |
|
 |
Air-termination rod StSt |
Safe interception of the flash charge in permanently corrosionresistant, stainless steel design |
|
| Application | Type | ||
| Foundation Earthing | |||
| 1 |  |
Connecting clamps | Clamps for connecting round and flat conductors in concrete foundations and reinforcements with round and flat conductors with tested short circuit current carrying capacity (50 Hz). |
 |
Round wire 10 mm St/tZn | Round wire tested to IEC 62561-2 for use in lightning protection and earth-termination systems 3). | |
 |
Strip 30 x 3.5 St/tZn | Strip tested to IEC 62561-2 for use in lightning protection and earth-termination systems 3). | |
 |
Fixed earthing terminal type M V4A |
Corrosion-resistant connection of the ring earthing with the foundation earthing at the base of the tower. | |
| Ring Earth Electrode | |||
| 2 |
 |
Connection clamp with threaded bolt StSt (V4A) |
For connection of round and flat V4A conductors to fixed earthing terminal |
 |
Cross unit StSt V4A | Corrosion-resistant connection of the individual ring conductors in V4A. | |
 |
Stainless steel strip V4A | Corrosion-resistant ring conductor in V4A. | |
| Equipotential Bonding | |||
| 3 |  |
Equipotential bonding in the tower base/equipotential busbar StSt |
Suitable for equipotential bonding and protective/functional equipotential bonding. |
Safe Right Down The Line
Work on electrical systems is becoming more and more demanding. Make sure you use safe and reliable equipment. DEHN offers tested products and reliable services which protect your employees from injury caused by arc faults and secure the availability of your systems. This gives you, as the employer, legal certainty.
Safe At Work
| Application | |
| External Lightning Protection | |
 |
Safe when it matters most Reliable protection against arc faults in electrical installations: DEHNcare personal protective equipment keeps you safe from the thermal effects of an arc fault. DEHNcare equipment is also comfortable to wear thanks to the unique material combination of leather and neoprene. The protective equipment is tested to international standards and consists of a hood, safety helmet for electricians, face shield, protective gloves, jacket and trousers or coat. |
| Voltage Detectors | |
 |
Safe right down the line Make sure that no voltage is present with a capacitive voltage detector from 1kV to 420kV. Choose from a wide range of voltage detectors – you are bound to find your voltage and frequency! |
| EaS devices and fixed ball points | |
 |
Safe earthing and short-circuiting (EaS) Configuring your individual EaS device for your system is simple and flexible. Fixed ball points |
|
Arc fault protection system |
|
 |
Safe – fast – flexible DEHNshort quenches arc faults in your low-voltage switchgear installations in milliseconds. Your employees are safe when carrying out maintenance and repairs. Profit from optimised system availability: your system runs and runs, downtime due to an arc fault is significantly reduced. |
We protect substation engineers, asset managers, SAPS, cable jointers, overhead linesmen and utility workers with PPE and safety equipment: this includes insulating gloves, arc flash clothing, voltage detectors, insulating matting and portable earthing to ensure worker safety when carrying out repair and maintenance on LV-HV switchgear, transformers, substations and turbines.
All of our Cable Connection & Energisation Accessories including Medium & High Voltage joints, terminations, connectors and cleats are tested to the latest international standards and supporting ranges of professional installation tools are stocked to reduce incident, accident and downtime to plant and people.
Published 02 Sep 2026
Celebrating Charlie & Ella’s Level 4 Sales Executive Apprenticeships At Thorne & Derrick International, we are proud to champion talent development and recognise the dedication required to achieve professional growth. We are therefore delighted to congratulate Charlie Baines and...
Published 11 Aug 2026
Thorne & Derrick will be Exhibiting at Solar & Storage Live UK 2026 at the NEC Birmingham from 22nd–24th September, showcasing our support for HV Cable Accessories, Joints, Terminations, Separable Connectors, Cable Tooling and Grid Connection Products used across...
C
