Cable Drum Handling
Pictured: Despatched last week 5 sets of cable jack towers – the JT20 Cable Drum Jack Towers to support the safe on-site handling of LV-EHV cable drums at Western Power Distribution. Robust engineered construction with hydraulic jacks and adjustable height spindle support blocks.
Drum Lifting Jack Specification | JT20 20 Tonne Capacity SWL Per Pair, Minimum Drum Dia 1480mm, Maximum Drum Dia 3400mm, Base Area 1830x285mm, Weight Per Pair 370Kgs.
Thorne & Derrick | LV HV Cable Jointing & Electrical Equipment and SEB service the Power Transmission & Distribution industry in the onshore and offshore wind, solar, rail, oil/gas, data centre, battery storage and utility sectors. For over a decade, we have provided competitive prices and technical support for the SEB range of exceptional quality, British manufactured Cable Pulling & Laying Equipment – this includes rollers, socks, jacks, winches and trailers to enable cables, umbilicals or pipes to be installed into ducts, trenches and tunnels up to 400kV.
Further Reading | Cable Drum Handling & Laying Cables | A Guide from Nexans
Press Release | Thorne & Derrick Appointed Approved Stockist for UK Leading Cable Pulling Equipment Manufacturer
Pictured | Singco Cable Grips – we produce cable socks for Boskalis, NKT, Nexans, DEME and other major cable laying contractors for the connection of wind farm projects globally.
Thank you to NnG Offshore Wind for their kind permission to republish this article
The first of two export cables, each 37 kilometres in length, has been installed at the nearshore of Thorntonloch Beach as part of construction of the Neart na Gaoithe (NnG) Offshore Wind Farm.
These electricity transmission cables will connect NnG’s two offshore platforms to its onshore substation located in the Lammermuir Hills.
The offshore cable was transported to the nearshore area of Thorntonloch Beach by Prysmian Group’s cable-laying vessel, the 124 metre long Cable Enterprise.
➡ Go to cable grips to learn about how Thorne & Derrick provide safe installation, support and pulling of cable in the wind energy sector.
Cable Enterprise is Prysmian Group DP2 cable laying vessel that has been designed with almost 8 MW of power, allowing her to autonomously maintain position in harsh weather conditions. The vessel has the capability to undertake simultaneous lay and burial operations with any type of plough, including HD3 ploughs with up to 180 tons tensions. The vessel maintains her ability to ground out and to operate in very shallow waters with 7-point independent mooring system allowing her to meet stringent operational requirements. Wärtsilä NOx reducing system fitted to all 4 Wärtsilä engines to achieve 75% NOx reduction from base levels.
The onshore winch cable was pulled through a 650m long horizontal directional drill duct and connected to the offshore cable situated on the deck of the vessel, 1km from shore. The offshore cable was then directed back through the cable duct towards onshore where it will be connected to the onshore cables behind Thorntonloch Beach.
The Cable Enterprise will lay the offshore cable from the nearshore of Thorntonloch Beach to the site of NnG. The cables will be buried to protect them from damage. Prysmian, one of NnG’s tier one contractors, expect the second offshore cable to be installed in July.
NnG, jointly owned by EDF Renewables and ESB, will supply enough low carbon electricity for around 375,000 homes and has a capacity of c. 450MW of low carbon energy and will offset over 400,000 tonnes of Co2 emissions each year.
Matthias Haag, NnG Project Director, said: “The installation of the first of our two offshore cables is a significant milestone in the construction of NnG.
“These two 37km cables will play a pivotal role in connecting our two offshore platforms to the onshore substation over in the Lammermuir Hills.
“We’re grateful to all our neighbours in and around the Throntonloch area for their patience as we carry out these vital construction works nearshore.”
Massimo Galletta, Project Director (NnG) at Prysmian Group, said: “We are proud of being selected for such a strategic project, proving our state-of-the-art cable technology, know-how and project execution expertise to support the growing renewable energy industry.”
Press Release | Thorne & Derrick Appointed Approved Stockist for UK Leading Cable Pulling Equipment Manufacturer
Complete range of LV, MV and HV cable pulling products for installation and enabling cable jointing in trench or ducts including LV, 11kV/33kV medium voltage (MV), 66kV/132kV high voltage (HV) and EHV transmission and distribution cables up to 400kV.
➡ See Also Cable Laying, Installation & Support Products | MV HV Windfarm
Cable Rollers | Duct Rods | Cable Socks | Cable Lubricant | Duct Seals | Cable Duct
Surge Protection | with Network Rail PADS Approved Products
Surges or Transients are short duration increases in voltage, measured between two or more conductors. These potentially harmful voltages can be induced into a building from various sources, from the direct and or secondary effects of lighting, to switching actions and equipment faults.
These events can generate thousands of volts across equipment leading to direct failure, undetected degradation and insulation faults leasing to premature failure.
An effective Surge Protective Device (SPD) should have a low let-through voltage, as this is the value of voltage that the protected equipment will be subjected to.
The lower the voltage the better the protection. the greater the voltage the higher the risk of distribution, degradation, damage to the equipment and the electrical network. As technology moves on, components within electronic equipment continue to become smaller and therefore more sensitive to these types of influences.
Impulsive Discharge Current (for Type 1; Test Class I):
The maximum current of specified energy that a Type 1; Test Class 1 device must service during the type test.
Maximum Discharge Current; Imax:
The maximum current that a Type 2; Test Class II protective device will withstand.
Nominal Discharge Current (for Type 2; Test Class II):
In a measure of the longevity of a Surge Protective Device. It is determined by injecting multiple discharges into the SPD during its type test procedures. It is often specifies to be half of the maximum discharge current (Imax)
Voltage Protection Level / Let Through Voltage:
Is the maximum voltage across the Surge Protective Device terminals as a result of a specific discharge current. It is the maximum voltage that the equipment will see if it were positioned directly at the terminals.
Maximum Continuous Operating Voltage:
Is the maximum voltage that can be, safely, continuously applied to the terminals of the Surge Protective Device.
Type 1 Surge Protection Devices (SPD’s)
A Type 1 SPD will deal with direct and proximity lightning strikes and have the highest energy discharge capacity. They are designed to survive in high stress environments, especially those at the incoming power supply. It is a requirement that they are installed where an External Lightning Protection System (Faraday cage) is fitted or the mains is fed from an Overhead Power Cable. The Type 1 should be accompanied by downstream Type 2 Surge Protective Devices.
Type 2 Surge Protection Devices (SPD’s)
A Type 2 SPD will deal with indirect Lightning strikes and the effects of surges locally generated from the numerous switching events within an installation. They are designed for the use in distribution boards located downstream of type 1 Surge Protective Devices or in the incoming power supply panel / consumer unit where an External Lightning Protection System is not fitted and the mains is fed by an underground cable.
Type 3 Surge Protection Devices (SPD’s)
A Type 3 SPD is designed to provide the lowest protection level to meet the voltage withstand of the equipment supplied from the final distribution panel. The SPD may also be of a design such that it can be placed or connected directly to the critical equipment.
AN Wallis currently have a range of products with PADS approval for use in the rail industry, including products from the RTM series (Rail Track-Side Module), the SSI series (Solid State Interlocking) and the CRTM series:
Thorne & Derrick distribute full range of AN Wallis Earthing Products | Bars | Rods | Tapes | Conductors | Clamps
Thorne & Derrick stock and distribute an extensive range of 400V-33kV Rail Cable Accessories & Power Distribution Systems 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.
Cable Joints, Terminations & Connections | Distributors & Stockists for 3M Cold Shrink | Nexans Euromold | Pfisterer CONNEX
RIS-3279-TOM Standard Arc Flash & Protective Clothing Standards
Arc Flash & Protective Clothing Standards
RIS-3279-TOM (formerly GO-RT 3279) is a high visibility standard that only applies to the rail industry in the UK, as opposed to the EU-Wide nature of other EN standards. The aim is to ensure that rail workers on or near the trackside are sufficiently visible to trains approaching at speed or any other traffic.
Thorne & Derrick provide competitive prices and fast delivery for the complete range of arc flash clothing and accessories designed to protect people and save lives.
View further information about Arc Flash Clothing Standards.
RIS-3279-TOM | Standard Overview
Protective clothing. Electrostatic properties. Material performance and design requirements.
High visibility clothing is the fundamental principle behind the UK Rail Industry Standard. This is based on the European Norm EN 20471:2013, and garments must comply to Class 2 High Visibility, the middle of a three class range. The standard states the following: ‘high visibility clothing worn by people on the lineside or on or near the line should conform to a single standard for the colour and luminance of background material and that this standard will accord with the detail contained within BS EN 20471:2013 high visibility clothing – Test methods and requirements (ISO 20471:2013).’
Stated in the standard is that: ‘the colour specific requirements within this standard conform to the range specified within BS EN 20471 clause 5.1.2.’ In order to confine this to a specific orange colour, and to prevent the selection of a colour at the red end of the spectrum, the precise chromaticity co-ordinates for the colour are specified as: Fluorescent orange, X:0.588, Y:0.371. with a luminance factor of at least 0.4. The accepted tolerance in colour is as laid out in EN 20471. However, there is no tolerance for the luminance factor.
Also stipulated in RIS-3279-TOM is the need of retro-reflective materials, with photometric and physical performance aligned with EN 20471.
Mentioned in RIS-3279-TOM is the accepted use of a mini vest where the nature of the work being carried out will not obscure the high visibility clothing, and thus reduce the surface area’ that is visible. The same applies to company logos; these are permitted where they do not compromise the surface area of background colour, and compensation may have to be made for this.
➡ Standards | BS EN 1149-5 | IEC 61482-2 | BS EN ISO 11611 | BS EN ISO 20471| BS EN ISO 14116 | BS EN ISO 11612 | BS EN 13034 | BS EN 342 | BS EN 14404 | BS EN 343 | HSG47
Hi vis and Flame Resistant polo shirt in unique VXS+ blend of fibres developed to meet the requirements of RIS-3279-TOM for workers on or near the trackside.
The ProGARM® Hi-Vis Orange Collection features a range of 100% VXS+ inherent garments tested for minimal shrinkage, low colour washout and for long-standing protection against Arc Flash incidents. All garments are certified for use in Rail environments with the Rail Industry Standard, RIS-3279.
With a comprehensive range of arc workwear for both Men and Women, and with the ProGARM lifetime-seam guarantee, you can be confident of long-lasting protection.
| Lightweight Arc Waterproof Jacket | ProGARM 9422 | 25 Cal |
| Lightweight Arc Waterproof Trouser | ProGARM 9622 | 25 Cal |
| Ladies Arc Polo Shirt | ProGARM 5292 | 6 Cal |
| Ladies Arc Coverall | ProGARM 4692 | 8 Cal |
| Ladies Arc Flash Trouser | ProGARM 4614 | 8 Cal |
| Arc Flash Jacket | ProGARM 4608 | 10 Cal |
| Arc Coverall | ProGARM 4690 | 8 Cal |
| Arc Flash Trouser | ProGARM 4616 | 8 Cal |
| Waterproof Salopette | ProGARM 9660 | 47 Cal |
| Arc Waterproof Jacket | ProGARM 9440 | 47 Cal |
| Arc Polo Shirt | ProGARM 5290 | 6 Cal |
| Arc Sweatshirt | ProGARM 5648 | 21.6 Cal |
➡ Contact Thorne & Derrick for further information about the above arc flash garments with RIS-3279-TOM approvals.
Clothing & Garments
Protecting Workers Against the Dangers of Arc Flash
Thorne & Derrick stock and supply the most extensive range of Arc Flash PPE, Clothing & Protective Garments – should you require any further information, sample garments for field test and trial or a quotation please do not hesitate to contact us.
Thorne & Derrick International supply arc flash clothing and protection equipment including coveralls, gloves, helmets, face shields and general head-to-toe PPE is used to protect against flashover – complete range of insulating matting is also available for worker protection when exposed to energised electrical switchgear and transformers.
Typical applications include LV, HV & EHV cable jointing and terminating, fuse pulling, switchgear commissioning, racking circuit breakers, electrical switching and live working on medium and high voltage electricity networks.
T&D are national distributors LV, MV & HV Cable Installation, Jointing, Substation & Electrical Equipment – we service UK and global businesses involved in cable installations, cable cleating, cable jointing, substation, overhead line and electrical construction at LV, 11kV, 33kV and EHV.
Since 1985, T&D have established an international reputation based on SERVICE | INTEGRITY | TRUST.
Electrical Safety Equipment & Cable Accessories for the Maintenance of Low, Medium & High Voltage Power Systems
As an Independent Connection Provider (ICP), we understand that your new electricity connection needs to be delivered in a safe, reliable and cost effective way. We have a long track record throughout the UK of successfully meeting clients’ power requirements through the design and build of electrical infrastructure, from the point of connection to the local distribution network to their onsite infrastructure.
Our Team of Experts
As an established ICP, we support our clients to ensure their new connection requirements are safely delivered to the highest standard, on time, in the most cost effective and innovative way.
Our extensive in-house capability, including designers, planners, authorised engineers and project managers are experienced in designing and building complex and essential electricity distribution networks.
In addition to the connection work, we can support you by taking a long term, holistic view of your energy infrastructure. Our range of solutions enable us to provide an end-to-end service to reduce your energy bills, decarbonise your assets and improve the resilience of your electricity network. Whatever your needs we will work with you to deliver a customised solution.
You can trust us. We have been delivering for some of the UK’s most critical electricity infrastructure for over 50 years, including High Speed 1, Network Rail, London Underground, Docklands Light Railway, and EDF (Hinkley Point C). We also deliver for leading UK airports, Heathrow, Gatwick, Luton, Stansted and London City.
UKPN deliver work associated with a connection to the distribution network, including:
It’s straightforward, just let us know where your development is and what your requirements are and we will provide you with a proposal for the connection to the distribution network. We will make the necessary arrangements with the local DNO, or IDNO, and ensure any work they have to do is coordinated with our works.
We will work with you to understand your capacity requirements and design the optimum solution to meet those requirements. Our design engineers will work with the local DNO, where necessary, to identify the preferred point of connection to the distribution network to meet your expected demand. We also have experienced in-house consultants who can help you determine the most suitable technical and commercial solution for your entire development if required.
We understand the importance of meeting the delivery programme for connection to the distribution network for a new development. Our experienced designers, planners and engineers work closely with you, and your partners, from outline design through to construction on site to ensure your deadlines are achieved.
By utilising our local in-house resources and an efficient and effective supply chain, our ICP Solution Offering is a competitive alternative to other providers. We ensure our proposal for the connection to the distribution network includes for the most cost effective design whilst also ensuring resilience and quality is maintained.
Our knowledgeable design engineers understand electricity networks and make sure quality is at the forefront of all designs. We are experienced with Distribution Network Operator standards and, being closely affiliated with one of the UK’s largest DNOs, we take pride in operating to the highest quality and industry leading standards. Our experienced training resources, make sure we keep up to date with industry developments.
UKPN | Joints, Terminations & Separable Connectors 11kV 33kV
Pot Ending LV SWA PVC Sheathed Service Cables – Engineering Guide UKPN
11kV Triplex Cable Joint (UKPN)
LV MV HV Jointing, Earthing, Substation & Electrical Eqpt
Key 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
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