Earthing
Earthing Armoured Cables To Safely Protect LV AC Cables In The Solar Industry
February 28th, 2024Challenge | This week a Solar EPC client of Thorne & Derrick engaged our Technical Sales Department to assist with ongoing O&M issues relating to the termination connection of steel wire armour (SWA) on 450off 4 core x 240sqmm LV AC cables, 0.6/1kV – the outdoor location cables are connected to a string inverter and the MV station at the remote end on a UK based 50MW solar farm in Derbyshire. The cable armouring provides mechanical protection but is not intended to circulate electrical current.
SWA Cable Steel Wire Armoured Cables | Image FS Cables
BS7671 Clause 522.8.10
“Except where installed in a conduit or duct which provides equivalent protection against mechanical damage, a cable buried in the ground shall incorporate an earthed armour or metal sheath or both, suitable for use as a protective conductor. The location of buried cables shall be marked by cable covers or a suitable marker tape. Buried conduits and ducts shall be suitably identified. Buried cables, conduits and ducts shall be at a sufficient depth to avoid being damaged by any reasonably foreseeable disturbance of the ground.”
Earthing Armoured Cables
Solution
Initially, from the viewpoint of the above British Standard the client considered connecting the wire armour at the MV station to ensure that during a fault (e.g.cable strike) an earth path exists to allow safe disconnection of the cable. Earthing the armours of buried SWA cables is important for safety – this prevents/reduces the severity of electric shocks and equipment damage should a person dig inadvertently into the cable. The cable wire armours provide a complete earth path around the cable. Utilizing a single phase within a 4 core cable as earth is not sufficient as it does not offer complete protection around the circumference of the cable. Also, in solar farm installations un-earthed wire armours can have induced voltage from excessive current generated. Therefore, the contractor should always consult the circuit designer.
Customer Service
From initial application, to concept, to design and to sample acceptance by the end client we subsequently completed the despatch and delivery of their order in 5 working days for 450off Armour Earthing Kits.
Important Note
Solderless earth kits that are intended for copper tape screens (MV cables) are a substandard method to earth SWA cables. Solderless earth kits utilize a constant force spring which do not offer a secure earth bond for SWA’s. Also, the cross sectional area of the braid within these kits is inadequate which is why you should always use an armour earth kit for this application. Contact us to discuss your application.
Innovative Connection & Grounding Solutions for LV Cables
Excerpt from Installation Instruction
Heat Shrink Outdoor Armour Earth Kit To Suit
XLPE SWA PVC
The Heat Shrink Outdoor Armour Earth Kit includes medium wall adhesive lined heat shrink tubes, mastic tapes, solder-blocked earth braids and clamps. Contact us for further information, technical support or for a quotation.
THORNE & DERRICK are Specialist Distributors of LV HV Solar Cable Accessories, Jointing, Termination, Earthing & Electrical Equipment 1500V DC to 33kV – we service UK and global businesses involved in cable installations, jointing, substation and electrical construction.
Since 1985, T&D have established reputation based on SERVICE | INTEGRITY | TRUST – we are highly customer responsive and absolutely committed to providing a world-class service.
We provide expert technical support and supply from a multi-million pound stock holding:
- Cable Joints, Terminations & Connectors
- Earthing & Lightning Protection
- Cable Accessories – Lugs & Glands
- Circuit Protection & Fuses
- Cable Cleats & Clamps
- Electrical Safety Equipment
- Cable Pulling & Laying Equipment
- Arc Flash Protection & Clothing
- Cable Duct Seals & Transit Systems
- Surge Arresters & Bushings
- MV HV Overhead Line & Substation Power Products
>> MORE INFO <<
Further Reading
Thorne & Derrick are Specialist Distributors of Innovation Tooling & Accessories for LV HV Power Systems to facilitate safe and reliable cutting, crimping, preparation, termination and installation of cables, 600V to 132kV.
Power Systems Earthing | An Introduction to Substation and Electrical Equipment Protection
October 31st, 2023
Power Systems Earthing | Electrode System
Power Earthing Systems
An earth electrode system, professionally designed by competent engineers, is essential to ensure the safety of personnel and protection of equipment from dangerous voltages in and around medium and high voltage (MV & HV) substations.
Earth Electrode Systems are a critical part of any electrical system and they are often seen as inert which may sometimes be dismissed as cost-saving or forgotten about until a later stage of the project – should these systems fail due to incompetent design or the use of cheap substandard components, the resulting events may be catastrophic or even lethal.
For instance this will carried out by competent and highly experienced electrical engineers and technicians. A.N Wallis are able to offer earth electrode system designs and associated testing services using the most up to date Earthing & Lightning Protection Equipment and design software CDEGS.
CDEGS (Copper Earth Electrode Design) is now recognised as the industry standard earthing design analysis software in the UK and in many other parts of the world.
Power Earthing System products, manufactured by A.N Wallis and distributed by Thorne and Derrick from high conductivity copper to BS EN 13601 is installed to protect buildings, overhead lines and medium/high voltage substations (MV-HV) against potentially catastrophic damage that can be caused by a lightning strike resulting in short circuiting.
Power Earthing System | A.N Wallis
CDEGS
CDEGS (Current Distribution, Electromagnetic Fields, Grounding and Soil Structure Analysis) is a grounding (earthing) and electromagnetic analysis software package. It is dedicated to accurately analyse problems involving grounding, electromagnetic fields, electromagnetic interference including AC/DC .
This software allows to stress test designs and systems to evaluate performance under given conditions making the electrode systems safe.
using Substation Electrode Systems
A.N Wallis offer high specification test equipment to carry out soil resistivity testing. This helps it gain data from tried and tested methods. It is then analysed using CDEGS software to then produce a representative electrical equivalent soil resistivity model which can be used in the earthing design process.
As a result if this were to fail due to a incompetent design they would be running multiple tests to keep the workplace safe.
The Importance of Earth Bars For Power Earthing Systems
Substation earthing bars (LV HV) are used to marshall earth connections, connect copper earth rods or earth cable conductors using crimp lugs for terminations in substations, cable pits, feeder pillars and switchgear.
Earthing bars can be tinned and bases power coated to improve corrosion resistance. Bars are pre-drilled with cable connection holes with optional threads for installation ease. Manufactured from highest conductivity and quality copper to British Standards.
Full range of standard, single and twin link types for LV, MV & HV switchroom/substations. Customised to suit the earthing requirements of your project on short lead times.
Electrode Systems
To outline, the three main areas to analyse with any Earth Electrode system are:
– Touch, Step and Rise of Earth Potentials (RoEP). (These are also known as Earth Potential Rise (EPR or Ground Potential Rise (GPR).
Thorne & Derrick working with A.N Wallis will liaise with the DNO (Distribution Network Operator) or Electricity Supply Company on your behalf to gain all the required ‘Point of Connection’ data for your new electrical connection. Using the Soil Resistivity data, A.N Wallis produce a conceptual earth electrode system layout based on the existing plant layout drawings and analyse the associated voltage contours using either the MALT or MALZ module of the CDEGS software. Graphical plots are produced using the CDEGS software that visually identifies any ‘hot’ spots around the site that may need further design time.
MALT (CDEGS) assumes that the entire earth mat is at the same voltage, which is very dangerous to consider, particularly on more significant sites with low soil resistivity.
MALZ (CDEGS) does allow for voltage drops along conductors but does not account for inductive or capacitive effects between conductors.
These Touch, Step and Rise of Earth Potential levels are assessed, and only when they are within safe limits will A.N Wallis pass this design for construction.
Further calculations will be carried out to determine whether the site may influence other electrical installations under fault conditions and from that we can determine the site ITU (International Telecommunications Union) classification as either HOT or COLD.
Only once we have confidence that the design parameters are met, a full ‘for construction’ style drawing will be produced.
Key Benefits of Power Earthing Systems
- Provides safety for LV MV HV electrical sites
- Provides protection against dangerous voltage in and around substations
- Helps identify and document loss in Power Earthing Systems
Further Reading
- Earth Bars | Wallis Earth Bar Software (WEBS)
- Correct Termination Of A Cable Lug Onto An Earth Bar | AN Wallis Guide
- AN Wallis Earthing & Lightning Protection | ECA Consultant & Specifier Associate
Earth Rods | Earth Tapes | Copper Earth Plates | Copper Earth Mats
THORNE & DERRICK are national distributors of LV, MV & HV Cable Installation, Jointing, Duct Sealing, Earthing & Electrical Equipment – we service UK and global businesses involved in cable installations, substation, overhead line and the installation of medium/high voltage cable joints and terminations at LV, 11kV, 33kV and HV.
Contact us for 3M Electrical, ABB, Alroc, AN Wallis, CATU Electrical, Cembre, Centriforce, CMP, CSD, Elastimold, Ellis Patents, Emtelle, Euromold, Filoform, Lucy Electric & Zodion, Nexans, Pfisterer, Polypipe, Prysmian, Roxtec, Sicame, WT Henley.
See How DEHN Provides Electrical Protection for Wind Turbines
March 29th, 2023
Electrical Protection For Wind Turbines
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
Secure profit on your investment
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.
Developing lightning protection zone concepts with expertise
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
Always reliably informed with DEHNdetect
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:
- Impulse current [kA]
- Long stroke current [A]
- Load [C]
- Specific energy [MJ/Ω]
- Rise time [kA/μs]
Benefits:
- Prevention of subsequent damage
- Reduction of maintenance / repair costs
- Reduction of downtime
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. |
Lightning & surge protection
in the Wind Turbine nacelle
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 |
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Information Technology Systems |
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| 5 |
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BLITZDUCTORconnect |
Protects signal, bus or control lines |
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DEHNpatch Class E |
Universal type 2 SPD for Ethernet and structured cabling up to 250 MHz. |
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BLITZDUCTOR VT |
Weather station |
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DEHNrecord IRCM |
Condition monitoring unit for up to 50 BLITZDUCTORconnect arresters. With LED status indication and floating remote signalling contact. |
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Safely discharging lightning current
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. |
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HVI power long Conductor (cut to length) |
Individual lengths, on request we can assemble your conductors with the appropriate connection elements. |
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UNI disconnection clamp 200 kA | 200 kA lightning current carrying capability according to IEC 62561- 1 2), stainless steel V2A. |
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KS connector 200 kA | 200 kA lightning current carrying capability according to IEC 62561- 1 2), stainless steel V2A. |
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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. |
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Tubular air-termination rod |
Safe interception of the flash charge in permanently corrosionresistant, stainless steel design. |
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Air-termination rod StSt |
Safe interception of the flash charge in permanently corrosionresistant, stainless steel design |
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| 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). |
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Round wire 10 mm St/tZn | Round wire tested to IEC 62561-2 for use in lightning protection and earth-termination systems 3). | |
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Strip 30 x 3.5 St/tZn | Strip tested to IEC 62561-2 for use in lightning protection and earth-termination systems 3). | |
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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 |
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Connection clamp with threaded bolt StSt (V4A) |
For connection of round and flat V4A conductors to fixed earthing terminal |
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Cross unit StSt V4A | Corrosion-resistant connection of the individual ring conductors in V4A. | |
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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 service and maintenance work
DEHN safety equipment
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
- Personal protective equipment and arc flash clothing
- Voltage detectors
- EaS devices
- Fixed ball points
- Arc fault protection systems
| Application | |
| External Lightning Protection | |
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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 | |
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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 | |
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Safe earthing and short-circuiting (EaS) Configuring your individual EaS device for your system is simple and flexible. Fixed ball points |
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Arc fault protection system |
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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. |
ELECTRICAL SAFETY PROVIDERS
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.
Safe Working on Electrical Installations by DEHN | Earthing & Short-Circuiting Devices
March 21st, 2023
Earthing & Short-Circuiting Devices Electrical Safety
Safe Working on Electrical Installations
Earthing and Short-Circuiting Devices
Save you life during work on electrical installations
When working on electrical installations, it is crutial that the five safety rules are observed.
Earthing and short-circuiting at the work location is the key element of these rules. It ensures a de-energised state for the duration of the work in case of interference voltages, atmospheric overvoltages or accidental re-connection.
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
Five Safety Rules
In Accordance with EN 50110-1 (DIN VDE 0105-100)
- Disconnect completely
- Secure against re-connection
- Verify that the installation is dead
- Carry out portable earthing and short-circuiting
- Provide protection against adjacent live parts
The installation must be disconnected completely and secured against re-connection first. After testing and verifying with a voltage detector that the installation is dead, the earthing and short-circuiting device is connected to the earthing system. Then, it is connected to the parts to be earthed using an earthing stick. The earthing and short-circuiting device should be visible from the work location.
Electrical safety Equipment From DEHN
Short-circuiting cable
The transparent node unit and cables ensure easy visual inspection and allow the user to immediately detect signs of damage and corrosion. The cables and the connection element are fixed, thus preventing this connection from becoming loose even in case of the dynamic load of short-circuit currents. The cables are particularly robust and available with a cable crosssection up to 150 mm².
Laser marking
The new laser marking on the short-circuiting cable ensures permanent marking with the most important product information – directly on the product.
Universal clamp
We have clamps for every application: For fixed ball points with a diameter of 20 mm and 25 mm and flat clamps for copper bars. The PVC-sheathed cable lug ensures protection against twisting and damage.
Ball head cap
Ball head caps are available as rigid and adjustable ball head caps. A ball head cap that can be rotated by 4 x 90° allows the earthing and short circuiting device to be used in the most favourable position. The connection between the fixed ball point and the ball head cap ensures an extremely high degree of short-circuit strength.
Earthing and short-circuiting devices are produced in a standard-compliant and proven manner and are extensively tested in our test laboratories.
In-house production of all components ensures maximum quality and safety in terms of function and handling. With earthing and short-circuiting devices from DEHN you are always on the safe side.
Earthing and short-circuiting configurator
Easy online configuration of earthing and short-circuiting devices
Safe working on electrical installations is only ensured if the earthing and short-circuiting device is configured correctly. Thus, the selection of the earthing and short-circuiting device is always the first step. The new earthing and short-circuiting configurator makes selection easy:
- The intuitive menu navigation allows quick selection of the right earthing and short-circuiting device for your application.
- Precise and perfectly harmonised selection of the connection elements and earthing and short-circuiting cables.
- The variant number allows to clearly identify the finished product and order it at a later date.
- You may also use the Part No. of your previous orders for configuration.
- The selected product can be added to the shopping cart, sent via e-mail or printed.
- The technical data on the product are directly linked – online and thus always up to date.
➡ New earthing and short-circuiting configurator
Earthing and short-circuiting device in 8 steps
- Selection mode
First select
a. Product view or
b. System view
Select the product view if you already know which cable cross-section and clamps are to be used. In the system view the parameters of the switchgear installation are entered, for example the maximum short-circuit current and the type of earthing. Whether product or system view – both solutions lead to a technically sound earthing and short-circuiting device. - Basic structure
Define the basic structure of the earthing and short-circuiting device. - Phase cable end cross-section
Select the phase cable end cross-section of the short-circuiting cables. - Earth cable end cross-section
Decide whether the earth cable ends should have the same cable cross-section or a reduced cable cross-section. - Phase cable end equipment
Select the shaft type and connection element to be used on the phase cable end. - Earth cable end equipment
Select the operation and connection element for earth cable ends. - Earthing stick
Optional earthing sticks are available as accessory in different lengths and versions. - PDF of your selection
You can print the result of your selection, add it to the shopping cart or send it via e-mail. You may certainly return to your selection to make changes.
DEHN
DEHN are committed to the protection of workers and material assets. The energy and the spirit of innovation of more than 1,400 employees are reflected in their developments and innovative products in the field of lightning protection, surge protection and safety equipment.
The continuous growth of the DEHN group reflects their strong commitment to lightning protection, surge protection and safety equipment. The company’s global network of 11 subsidiaries and numerous sales partners passes on know-how and distributes high-quality products that are produced at their headquarters.
DEHN ensure that your buildings and installations are protected during operation, maintenance and repair. Their focus is particularly on wind energy, photovoltaic, process industry, traffic and communication solutions. You can be assured: DEHN protects.
ELECTRICAL SAFETY PROVIDERS
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.
Earth Bars | Wallis Earth Bar Software (WEBS)
March 6th, 2023Earth Bar Software
Copy & Video Courtesy of Andrew Trew | Marketing Administrator (AN. Wallis)
Copper earth bars provide a convenient common earthing point for electrical installations that require an earthing and lightning protection system, so why not send your earth bar enquiries to a company that has given blood, sweat (and a lot of) tears to a piece of software that truly breaks new ground in the world of earth bars.
Below is a 30-second video that shows the new Wallis Earth Bar Software (WEBS) creating:
· A 6-way earth bar
· Adding 2 disconnecting links
· Increasing the bar size from 50x6mm to 75x6mm
· Changing material of the hard-drawn plain copper bar to hard-drawn tinned copper bar
· Changing the base from Black PVC to Galvanised Steel to just feet
All topped off with a nice twirl at the end to give you a full 360-degree view of the earth bar.
This video only scrapes the surface of what this software can produce, and it is worth mentioning again that the below earth bar and its variations were completed well within 30 seconds! Ready to be sent to our customer for their approval. This is an internal piece of software that is used by AN Wallis staff daily to send the drawings that this software can produce for approval.
Send your earth bar challenge to Thorne & Derrick and let us amaze you with a full plan and side view upon completion along with an instant quote for your earth bar.
Earth Bar | Design & Specification & Manufacture Service
Pictured | Last month this project required 3 batches of 14 units of an earth bar with 18-way termination points and twin disconnection links for an OEM application in the industrial noise control sector. AN Wallis WEBS software was utilised to generate the above graphic concept of the finished manufactured earth bar. You can download the earth bar file here.
Further Reading
- Earth Bars | High Specification Copper Earth Bars for Lightning Protection Systems
- Correct Termination Of A Cable Lug Onto An Earth Bar | AN Wallis Guide
Earth Rods | Earth Tapes | Copper Earth Plates | Copper Earth Mats
THORNE & DERRICK are national distributors of LV, MV & HV Cable Installation, Jointing, Duct Sealing, Earthing & Electrical Equipment – we service UK and global businesses involved in cable installations, substation, overhead line and the installation of medium/high voltage cable joints and terminations at LV, 11kV, 33kV and HV.
Contact us for 3M Electrical, ABB, Alroc, AN Wallis, CATU Electrical, Cembre, Centriforce, CMP, CSD, Elastimold, Ellis Patents, Emtelle, Euromold, Filoform, Lucy Electric & Zodion, Nexans, Pfisterer, Polypipe, Prysmian, Roxtec, Sicame, WT Henley.
