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Greenlee Cable Pulling Equipment | Cable Laying Products for LV MV HV Underground Cables
December 14th, 2021
Cable Pulling Equipment | Greenlee
Greenlee
In 1996, Klauke the leading manufacturer of cable cutting and crimping tools expanded its electrical product portfolio with the acquisition of the Greenlee brand – with the focus on punching tools and cable management, Greenlee supports the safe and reliable installation of electrical cables and equipment to provide power distribution at LV MV HV networks.
Speedy Spinner | Cable Pulling Device
Easy Rollers | Cable Drum RollersĀ
Polyester Butler & Smart Bulter | Fibreglass Cable Pulling System
Fish Tapes | Conduit Rod TapesĀ
Cable Installation Lubricant | Electrical Cable Lubrication
Contact Thorne & Derrick for competitive prices, stock availability and technical customer support on the complete range of Greenlee products for Pulling & Laying cables.
Thorne & Derrick distribute the most extensive range ofĀ Low & High Voltage Cable Installation & Electrical Distribution EquipmentĀ to the Power Transmission & Distribution industry in the onshore and offshore wind, solar, rail, oil/gas, data centre, battery storage and utility sectors ā this includes the most extensive range ofĀ Cable Pulling & Cable Laying EquipmentĀ to enable the installation of low, medium and high voltage power cables into underground trench or duct.
We service UK and international clients working on underground cables, overhead lines, substations and electrical construction at LV, 11kV/33kV and up to EHV transmission and distribution voltages.
Key Products:Ā MV-HV Cable Joints & Terminations, Cable Cleats,Ā Duct Seals,Ā Cable Transits, Underground Cable Protection, Copper Earth Tapes, Cable Jointing Tools,Ā Feeder Pillars, Cable Ducting, Earthing & Lightning Protection, Electrical Safety, Cable Glands,Ā Arc Flash ProtectionĀ & Fusegear.
Distributors for: 3M Electrical, ABB,Ā Alroc, Band-It, Cembre, Centriforce, CMP, Elastimold,Ā Ellis Patents, Emtelle,Ā Furse, Greenlee, Lucy Zodion, Nexans Euromold, Pfisterer, Polypipe, ProGARM, Prysmian, and Roxtec.
Specialist Distributors | LV MV HV Jointing, Earthing, Substation & Electrical Eqpt
NEW Arc Flash Coveralls | ProGARM 3100 Treated Coverall
December 13th, 2021
ProGARM 3100 Treated Coverall
The ProGARM range of protective garments deliver ultimate Arc Flash clothing and protection, conforming with the relevant industry and EN standards ensuring protection from Arc Flash incidents.
Introducing the new 3100 Flame Resistant treated coverall that is certified to last 2x longer than any other competitor product. In stock and ready to ship in Navy, Orange and Royal Blue – contact Thorne & Derrick for more information.
The ProGARM 3100 Arc Flash Coverall provides Category 2 Protection against arc flash with 13cal/cm2 according to IEC 61482-2:2020 āopen arcā test method.
With VXT+ 350gsm woven treated antistatic fabric, the coverall is suitable for use in the electrical, petrochemical and utilities industries.
The arc flash coverall also has antistatic properties and provides protection for heat, flame and welding. It has been designed with unrivalled comfort and fit and is certified to 100 x industrial wash cycles capable of up to 75Ā°C, ensuring long lasting protection and product durability. The garment has various pockets for extra and secure storage.
ProGARM 3100 Treated Arc Flash Coverall
Arc Flash Coverall
Features & Benefits
- Mandarin collar shape with hanger loopĀ //Ā Maximum neck protection
- Two way zipĀ //Ā Easier donning and doffing
- 2 chest pockets with zipper closureĀ //Ā Secure storage
- 1 radio loop on right chest and 1 radio loop attached on left chestĀ //Ā Extra storage
- 1 sleeve pocket with VelcroĀ® closureĀ //Ā Extra storage
- Internal adjustable waist bandĀ //Ā Increased comfort and mobility
- 2 side pockets with inner access openingĀ //Ā Extra storage
- 2 back pockets with flap and VelcroĀ® closureĀ //Ā Extra storage
- Ruler PocketĀ //Ā Extra storage
- Studs adjustable cuff hemsĀ //Ā Increased comfort
- Gusseted crotchĀ //Ā Increased comfort and durability
- External kneepad pocketĀ //Ā Ease of use
- Action backĀ //Ā Wearer comfort
- 50mm double stitched reflective tapeĀ //Ā Industrial wash capable up to 100 wash cycles
- Garment has been tested after 100x industrial wash cycles and passes 11612 both A1 and A2Ā //Ā Increased durability
- Industrial wash capable up to 75Ā°CĀ //Ā Washing flexibility
Arc Flash Learning & Resources
Thorne and Derrick are proud to be distributors of ProGARM arc flash coveralls and protection.
We can help – should you require arc flash calculators or advice on the type of clothing and protection available please do not hesitate to contact us.
Thorne & Derrick
Thorne & Derrick are national distributors of LV, MV & HV Cable Installation, Jointing, Substation & Electrical Equipment ā servicing businesses involved in cabling, jointing, substation earthing, overhead line and electrical construction at LV, 11kV, 33kV, 66kV and EHV. Supplying a complete range of power cable accessories to support the installation and maintenance of low/medium and high voltage power systems:
- Slip-on Cable Terminations
- Cold-shrink Cable Terminations
- Heat-shrink Cable Terminations
- Cable Joints ā Heat & Cold-shrink
- Separable Connectors (Euromold)
- Surge Arresters & Switchgear/Transformer Bushings
KeyĀ Product Categories:Ā Duct SealsĀ |Ā Cable CleatsĀ |Ā Cable GlandsĀ |Ā Electrical SafetyĀ |Ā Arc Flash ProtectionĀ |Ā Cable Jointing ToolsĀ |Ā Cable PullingĀ |Ā EarthingĀ |Ā Feeder PillarsĀ |Ā Cable Joints LVĀ |Ā Joints & Terminations MVĀ
FR Arc Flash Gloves | 2679 Rain Glove
December 10th, 2021
ProGARM delivers ultimateĀ arc flash clothing and protection, including arc flash gloves, conforming with the relevant industry and EN standards ensuring protection from arc flash incidents for workers carrying out installation or maintenance of LV Low Voltage, MV Medium Voltage or HV High Voltage power systems.
Arc Flash Protection
Arc Flash Gloves
ProGARM is the leading UK manufacturer of high-quality, Flame Resistant, Arc Flash clothing, gloves, garments and workwear ā they work successfully with their UK Distributor Thorne & Derrick to save lives and reduce arc flash accident effects.
With multiple cable strikes every day in the UK and numerous major Arc Flash incidents, businesses are looking at how best to protect their team with the right Flame Resistant garments and accessories, including arc rated gloves. The correct clothing can significantly reduce injury and save lives.
ProGARM and Thorne & Derrick are committed to continual research and improvement to innovate and develop their range of arc flash clothing as quickly as possible to bring you the best Arc Flash protection for your team.
Product Launch: 2679 FR Arc Flash gloves
Introducing the NEW 2679 FR arc flash rain glove with puncture resistant technology. The flame resistant arc flash gloves are arc rated, cut resistant, and puncture resistant featuring high quality leather that is specially treated for water resistance. Knuckle, palm, and fingertips are reinforced with suede leather for durability and grip. Entirely lined with KevlarĀ® fibre by DuPont™.
The FR gloves will not drip, melt or ignite when exposed to flames or sparks. The result is increased efficiency, productivity and safety for workers, while in compliance with:
- NFPA 70e-2018 OSHA
- 29 CFR Part 1926
Arc Flash Learning & Resources
Thorne and Derrick are proud to be distributors of ProGARM arc flash coveralls and protection.
We can help – should you require arc flash calculators or advice on the type of clothing and protection available please do not hesitate to contact us.
Thorne & Derrick
Thorne & Derrick are national distributors of LV, MV & HV Cable Installation, Jointing, Substation & Electrical Equipment ā servicing businesses involved in cabling, jointing, substation, earthing, overhead line and electrical construction at LV, 11kV, 33kV, 66kV and EHV. Supplying a complete range of power cable accessories to support the installation and maintenance of low/medium and high voltage power systems:
- Slip-on Cable Terminations
- Cold-shrink Cable Terminations
- Heat-shrink Cable Terminations
- Cable Joints ā Heat & Cold-shrink
- Separable Connectors (Euromold)
- Surge Arresters & Switchgear/Transformer Bushings
KeyĀ Product Categories:Ā Duct SealsĀ |Ā Cable CleatsĀ |Ā Cable GlandsĀ |Ā Electrical SafetyĀ |Ā Arc Flash ProtectionĀ |Ā Cable Jointing ToolsĀ |Ā Cable PullingĀ |Ā EarthingĀ |Ā Feeder PillarsĀ |Ā Cable Joints LVĀ |Ā Joints & Terminations MVĀ
Medium Voltage Training | Reducing Defects In Cable Networks
December 8th, 2021
The following blog has been republished with kind permission of Angelo Roviello, Area Sales Manager at Ensto, about the importance of Medium Voltage Training for Installers.
Medium Voltage Training for cable Network Installers
Malpractices during the installation of cable accessories are the main cause of interruptions and faults. The solution is sharing our know-how with the installers.
The use of high-quality cable accessories is a prerequisite for reliability in medium voltage cable networks. However, since most interruptions are due to the installation process, proper and systematic training of installers is needed in order to reduce the number of medium voltage power cable and system faults.
The electrification of continuously growing urban areas is based on cable networks, and in rural areas overhead lines are gradually moving underground. Constant shortage of power professionals and cable jointers brings in installers with various backgrounds.
At the same time, cable accessories have been developed into complete packages with product-specific installation instructions. A trained professional knows the importance of on-site preparations such as protecting against dirt and water. He also follows the installation instructions carefully to make the joint or ending last as long as the cable itself.
MV Cable Training Reduces Costs
It is estimated that more than two thirds of unexpected interruptions in cable connections are due to faulty installation. In Central Europe, for example, the cabling activity is on high level, and the situation might be even worse.
Leading utilities look for a solution in two ways ā by selecting tested, high-quality products, and by applying systematic product training of installers. They know that by improving the quality of installation work, the costs can be reduced significantly in the long run.
Ensto has been providing installation training for more than ten years in various markets. The concept is called Ensto Pro and includes events that consist of both theory-based lessons and hands-on installation exercises.
It is estimated that more than two thirds of unexpected interruptions in cable connections are due to faulty installation.
The products, in turn, are tested in accredited laboratories in accordance of international standards, and in addition to that, continuously in-house to ensure quality. The installation instructions are based on visual images to clearly point out critical steps and measures.
The final goal of all this is a correct installation, reliable operation of the network and lower total cost of ownership for the customer.
Proven Results in Sweden
Ensto in Sweden has experience of systematic product training of medium voltage cable accessories since 2012.
āAt that time large utilities had failures in their networks, and it was soon realized that they were not due to the product itself. These utilities welcomed our installation training, received excellent results and remain loyal customers today,ā saysĀ Bjƶrn Gustafsson, Sales Director of Ensto in Sweden.
āSeveral years ago, one of the largest network owners in the country required its contractors to have all their installers trained on our products every four years. Now many other customers are doing the same,ā he says.
Medium voltage accessory training is usually held on or near customer premises. The day starts with cable theory, sharing experiences and going through the steps of installation. After lunch is a time for hands-on installation in small groups. Gustafsson and the team organize trainings almost every week covering nearly all Swedish customers.
This also means that the Ensto team and installers know each other well, and it is easy to pick up a phone and call.
āSome installers have already been trained for two or three rounds. They still find the day very rewarding and an excellent opportunity to discuss and learn something new for their daily work.ā
āAlso, the customer feedback is encouraging. One of our long-standing customers trained all the installers to cold shrink joints. After that, there was not a single cable joint failure, no more penalties and no replacement costs. The installers were also delighted with their improved skills.ā
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 ā 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:Ā Duct SealsĀ |Ā Cable CleatsĀ |Ā Cable GlandsĀ |Ā Electrical SafetyĀ |Ā Arc Flash ProtectionĀ |Ā Cable Jointing ToolsĀ |Ā Cable PullingĀ |Ā EarthingĀ |Ā Feeder PillarsĀ |Ā Cable Joints LVĀ |Ā Joints & Terminations MV HVĀ
Partial Discharge On Outdoor Terminations | Case Study
December 8th, 2021
Cable termination H3 | Uneven contamination before and shown after cleaning
Partial Discharge
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Special Thanks To William Higinbotham President at EA Technology for allowing T&D to republish
Below is a great example of using partial discharge instruments to prevent failures without doing unneeded maintenance.
Contamination of cable terminations
causes partial discharge
Cable terminations are often used outside on riser poles or substation structures to convert cables to overhead lines or busses. These terminations convert the very tightly controlled cable electric field into an uncontrolled air insulated application.
When applied properly, the field strengths are less than the insulation strength and therefore no partial discharge exists.
Under certain circumstances, even a well applied termination can have partial discharge as a result of contamination. Humid salt air leaves conductive deposits that often result in partial discharge. Because of this, terminations in coastal areas are highly prone to PD. Other types of contamination can result from pollution, or even dusty air. When an insulator gets unevenly coated in hydrophilic contamination, you can get what is called dry band discharge.
The uncontaminated sections of insulator tend to be hydrophobic, so the insulator has dry and wet areas that are insulating and conductive. This disturbs the field distribution and leads to discharge across the dry bands.
Given time this will erode the insulator and lead to flashover.
The challenge
A high voltage asset owner in central Canada has numerous terminations on substation structures. Clearly salt contamination is not the issue. However other contamination is building up unevenly on their cable terminations.
This operator is very proactive and does periodic PD surveys of both indoor and outdoor assets as part of their regular preventative maintenance. They use the EA Technology UltraTEV Plus2 with the UltraDish attachment for scanning terminations from the ground.
Cable termination H3 with uneven contamination
The test results
Two of the terminations (H1 and H3) scanned returned very high levels of ultrasonic energy. The phase resolved plots show typical PD results. The source is frequency locked to the power system and the impulses are occurring twice a cycle, half a cycle apart. The levels are approaching 40dBuV which is very high. The ANSI/NETA MTS 2019 standard calls for immediate action on levels greater than 6 dBuV.
Action taken
During the next scheduled outage, the insulators were cleaned and then rescanned. The ultrasonic energy was gone, proving that the discharge was a result of the contamination.
Cable termination H3 after cleaning
The benefits
The immediate benefit is that these terminations are now less likely to fail. Long term the asset owner has learned how the PD survey process can be used to control cleaning cycles. Some terminations may need less frequent cleaning some may need more.
Ultrasonic PD results prior to cleaning
Ultrasonic PD results after cleaning
EA Technology
William G. Higinbotham has been President of EA Technology LLC since 2013. His responsibilities involve general management of the company, including EA Technology activities in North and South America. William is also responsible for sales, service, support, and training on partial discharge instruments and condition-based asset management. He is the author or co-author of several industry papers.
Thorne & Derrick
Thorne & Derrick International are specialist distributors of LV, MV & HV Cable Installation, Jointing, Duct Sealing, Substation & Electrical Equipment ā 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:Ā Duct SealsĀ |Ā Cable CleatsĀ |Ā Cable GlandsĀ |Ā Electrical SafetyĀ |Ā Arc Flash ProtectionĀ |Ā Cable Jointing ToolsĀ |Ā Cable PullingĀ |Ā EarthingĀ |Ā Feeder PillarsĀ |Ā Cable Joints LVĀ |Ā Joints & Terminations MV HVĀ
- Scope āsingle-source supply of extensive range of products
- Stock ā a multi-million pound stock holding provides complete global supply solutions
- Staff ā technical support from a trained, proactive and friendly team
- Delivery ā UK stock turnaround with express logistics to all international destinations
Stockists for Nexans Euromold | Pfisterer Connex | 3M Cold Shrink
