Kicking of H2 with another CD500 manufactured by SEB International Ltd to support Utility project cable-pulls at 132/400kV, bound for the Grid – this is our largest Cable Drum Trailer build to date. An outstanding achievement in UK manufacturing excellence and Distributor partnership to lead the powering of global projects.
Customised to client specification to handle HV Cable Drums – should you require assistance with the Pull-in, Cable Termination, Jointing & Energisation of HV Cable Networks please continue to contact our Team. With global electricity demand forecast to double by 2050, Thorne & Derrick are perfectly positioned to meet all your major project constructions and cable fault repair works – our business can now provide technical specifications, competitive pricing and delivery commitments to enable transformer, switchgear and overhead line connections from 600V to 66/132kV polymeric cables up to 2000sqmm.
Further Case Applications
Prevent Dropped ObjectsTo prevent dropped objects it is recommended to implement a multifaceted approach that includes physical barriers, tool tethering, proper storage, training and regular inspections. This strategy aims to minimize the risk of objects falling from height and causing harm or damage – we welcome your Enquiries for workplace products that prevent dropped objects and mitigate risk to plant and personnel.
Ensure these are securely fixed on scaffolding, platforms and walkways to prevent objects from falling through gaps.Â
Utilize safety mesh or rated barrier netting in areas where objects might fall, especially around walkways, platforms, and building perimeters.Â
Consider using temporary roofing, floor fabrics, or other means to shield workers below from falling objects.Â
Dropped Object Prevention | Netting is used to enclose objects at height to prevent them posing a dropped object risk.
Secure tools and equipment using lanyards, tethers, pouches, holsters, and other drop containment devices.Â
When not in use, tools and materials should be properly stored and secured.Â
Never hang or drape items over guardrails, as this can cause them to fall.Â
Maintain a safe distance (at least 3 feet) from any leading edges when tools and materials are not in use.Â
Train workers on the dangers of dropped objects and how to minimize the risk.Â
Conduct regular inspections and periodic “hazard hunts” to identify potential hazards.Â
Maintain high housekeeping standards to reduce the risk of loose objects falling.Â
Document any nonconformities, assess their criticality, and implement corrective actions.Â
When possible, lower the working platform to ground level and lift the structure into position rather than taking tools and equipment to height.Â
Utilize pulley systems, ropes, or tool bags and belts to move tools and materials, reducing hand-carrying.Â
Ensure workers wear appropriate personal protective equipment (clothing and PPE), including hard hats and climbing helmets.Â
The Future of Cable Management – Trends & Innovations
uploaded by Chris Dodds (Thorne & Derrick) with accreditation to CableSafe.
In the engineering landscape, staying ahead of things is crucial, especially when it comes to cable management. At CableSafe, with operations spanning the Netherlands and the USA, we’re dedicated to pioneering innovative solutions in cable safety, confined space safety, and dropped objects prevention. Let’s delve into the future of cable management, examining emerging trends and exciting innovations shaping the industry.
Efficient cable organization is essential for optimizing workflows and minimizing hazards in industrial settings. Traditional methods often involve cumbersome cable trays and racks, but advancements in cable management solutions are simplifying the process. Products like CableSafe Safety Hooks Extreme and Cable Guards provide simple yet effective solutions for keeping cables organized and secure, reducing clutter and potential safety risks.
Elevated cable management solutions like CableSafe Cable Stands and Cable Bridge further streamline operations by minimizing tripping hazards and facilitating easier access for maintenance personnel. These innovations not only improve electrical safety but also contribute to overall efficiency on the job site.
As technology continues to advance, ensuring cable safety remains a top priority. CableSafe is dedicated to developing robust cable protection systems that mitigate risks and prevent accidents. Whether it’s through innovative cable guards or durable safety hooks, our products are designed to withstand the rigors of industrial environments while keeping workers safe.
The Safety Hook Extreme is an advanced specification and high performance version of the standard industrial cable hook manufactured with glass reinforced PBT and is UV stabilized, Flame Retardant (Class: 94V-0, Flame Class Rating 3) and Cold Weather rated.
CableSafe Hooks
Looking ahead, the future of cable safety lies in proactive prevention measures and advanced monitoring technologies. By investing in smart solutions that detect potential hazards before they escalate, companies can minimize downtime and maximize productivity while safeguarding their workforce.
Every industry has its own unique challenges when it comes to cable management. From offshore oil rigs, wind turbines and to manufacturing facilities, CableSafe understands the importance of tailored solutions for elevating trailing cables. Our customizable products are designed to meet the specific needs of diverse industries, from corrosion-resistant materials for marine applications to fire-retardant coatings for high-risk environments.
As we look to the future, CableSafe remains committed to driving innovation and excellence in temporary, permanent and trailing cable management. By embracing emerging trends and leveraging cutting-edge technologies, we’re shaping the industry for the better. With our customizable solutions and unwavering dedication to safety, we’re empowering companies to create safer, more efficient workplaces for their employees.
Should you require any further information about improving Electrical & Cable Safety in your workplace, contact Thorne & Derrick.
Further Reading
21.5.2025
HOLDING POWER by Ellis Patents | 30,000+ Vulcan Cleats and Flexistraps shipped out today under the blazing Yorkshire sun. The cable cleats will provide short-circuit restraint to both 11kV and 33kV Medium Voltage Cable Networks.
This WIN demonstrates the high-value of collaborative, proactive and strategized Manufacturer-Distributor relationships; we look forward to co-creating a Case Study to highlight how together we have worked to secure this achievement and satisfy clients specification and technical application requirements.
The consignment is now to be delivered to SEB International Ltd, the UK’s leading manufacturer of Cable Pulling & Laying Equipment, and consolidated for shipment with a CD500S Cable Drum Trailer (Payload 20,000kgs | Max Drum Width 2400mm), TW5000 Cable Pulling Winch and CP700 Cable Pushing Unit to power-up an accelerated cable laying process.
The £750K project value to Thorne & Derrick demonstrates our ability to manage and deliver upon UK and international major projects from our robust world-class supply-chain.
The High Voltage 132kV Cables will be connected to Grid using GIS Dry-Type Terminations from Nexans while all Medium Voltage 33/11kV switchgear and transformer Connectors are completed using market-leading Euromold and Connex brands from Nexans Power Accessories and Pfisterer.
All Cleats & Cable Accessories supplied by Thorne & Derrick – the purchase contract was managed by Gary Amos (Thorne & Derrick Sales Engineer).
Ellis Patents | HOLDING POWER
Pictured | Carl Cox (Thorne & Derrick Sales Engineer | Rail) with Noman Shabir (Ellis Patents National Sales Manager). The Ellis Patents ranges of PADS Approved Cable Cleats & Tunnel Hangers provide advanced material performance for substation, trackside and tunnel applications; this includes the short-circuit restraint and support of LV MV HV power cables. Please do not hesitate to contact Thorne & Derrick should you require further info, Lunch n Learn, CPD or Joint Visit to discuss your next cable cleat project requirements.
Ellis Patents Emperor Cable Cleats | Single & Trefoil | cable cleats designed, developed, tested and manufactured by Ellis from the Emperor range in accordance with IEC 61914 suitable for single, trefoil and Quad cable configurations
Ellis Patents Centaur Cable Saddles | the Ellis Centaur cable cleat has been designed, developed, tested and manufactured in accordance with IEC 61914 (Cable Cleats for Electrical Installations). The cable saddles are designed to support High Voltage Power Cables with diameters from 100mm to 162mm. Centaur consists of an extruded and pressed aluminium saddle and a hinged aluminium over strap.
Ellis Patents Aluminium Cable Cleats | the Ellis 2A two hole cable clamps have been designed, developed, tested and manufactured in accordance with IEC 61914 (Cable Cleats for Electrical Installations). The cable clamps are available in a range of sizes with range taking ability to suit single cables – the clamp can be epoxy coated for use in harsh environments, such as sea air conditions.
Ellis Patents Vulcan Cable Cleats | the Vulcan cleats are available in a range of sizes with range taking ability to suit single and trefoil cable formations (also available in Quad formation). The frame of the cleat is manufactured from corrosion-resistant 316L grade stainless steel, the cable is supported by a liner manufactured from a low smoke zero halogen (LSOH) material.
Ellis Patents Colossus Cable Cleats | The Colossus cleat is available in a range of sizes with range taking ability to suit LV MV HV cables in trefoil formation. The frame of the cleat is manufactured from grade 316L stainless steel, and the body of the cable cleat is manufactured from a low smoke and zero halogen (LSOH) material.
Ellis Patents Trident Cable Cleats | cable cleat is available in a range of sizes with range taking ability to suit LV MV HV cables in trefoil formation. The cleat is manufactured as standard in LSF which is PFAS and halogen free, flame retardant and suitable for outdoor applications.
Further ReadingÂ
Author | Rialdo Suwandi
Founder at Aldora Electric | Expert in Renewable Electrical Engineering & Cable Systems | Problem Solver | FIEAust CPEng NER
HV Bushings & Connectors
As medium voltage (MV) power systems grow in scale and capacity, manufacturers have introduced electrical equipment, such as transformers and switchgear, capable of handling up to 1250A at 52kV and 2500A at 36kV.
To ensure interoperability across manufacturers, these Interfaces are standardised under EN 50180 and EN 50181 as Interface F Bushings.
Furthermore, EN 50673 standardises 630A and 1250A bushings at 72.5kV.
What Are Interface F Bushings Used For?
Interface F bushings are typically used to connect gas-insulated switchgear (GIS) and transformers to cable circuits using separable connectors distributing electrical power at 11kV, 33kV and up to 66kV – manufactured by Nexans Euromold the connectors are suitable for cable termination of polymeric (XLPE EPR) insulated cables with copper wire or copper tape screen, wire armoured (SWA/AWA), wire braided or unarmoured cables into MV-HV Electrical Equipment with Interface F bushings.
Advantages of Electrical Equipment BushingsÂ
As defined in EN 50180 and EN 50181:
F1 Bushings: Um ≤ 36 kV; Ir = 2500 A
F2 Bushings: Um ≤ 52 kV; Ir = 630 A
F3 Bushings: Um ≤ 52 kV; Ir = 1250 A
For 72.5kV high voltage power systems, EN 50673 defines the following:
F4 Bushings: Um = 72.5 kV; Ir = 630 A
F5 Bushings: Um = 72.5 kV; Ir = 1250 A
Note: F5 interfaces are commonly used in offshore wind applications but can adopted for large onshore installations as well.
Pictured | Nexans Q900AR-1Q900AR-2 Interface F Equipment Bushing 52kV MV HV
To ensure proper fit and reliable performance the following information must be established:
Interface type? e.g. F1
Maximum system voltage? e.g. Um = 36kV
Cable insulation type? e.g. XLPE
Conductor material and cross-section? e.g. copper, 800sqmm
Insulation over-diameter? e.g. 52.8mm
Number of circuits per phase? e.g. 2 circuits
Are surge arresters required? Confirm via an insulation coordination study
Interface F bushings enable safe, standardised, and high-capacity MV cable connections to GIS, and transformers, both for on-shore and off-shore applications.
Selecting the correct separable connector Interface F Connector —matched to interface type, voltage, current, cable type, and system design—ensures long-term reliability, safety, and maintainability.
Definitions of International Electrical Standards
EN 50180 | This European Standard is applicable to ceramic and resin insulated bushings having highest voltages above 1kV up to 52kV, rated currents from 250A up to 3150 A and frequencies from 15 Hz up to 60 Hz for insulating liquid filled transformers. This European Standard establishes essential dimensions, to ensure interchangeability of bushings and to ensure adequate mounting and interchangeability of mating plug-in separable connectors of equivalent ratings.
EN 50181 | This European Standard is applicable to insulated bushings for maximum voltages above 1kV up to 52kV, rated currents from 250A up to 2 500A and frequencies from 15 Hz up to 60 Hz for equipment other than liquid filled transformers. This European Standard establishes essential dimensions, to ensure adequate mounting and interchangeability of mating plug-in separable connectors of equivalent ratings.
EN 50673 | Extend the scope of the EN50180-1/2/3 and EN50181 for plug-in type bushings up to 72.5 kV
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, Pfisterer CONNEX & SEANEX and Shrink Polymer Systems.
Published 15 Oct 2025
Testimonial Organiser | EA Technology Event | Industrial Forum 2025 Title | Keeping Electrical Switchgear Safe Date | 14th October Location | Chester Racecourse By | Chris Dodds (Sales & Marketing Manager at Thorne & Derrick | Co-Exhibitor with...
Published 18 Sep 2025
Thorne & Derrick International, the UK’s leading Specialist Distributor of LV HV Cable Accessories, Tooling & Hazardous Area Electrical Equipment, are celebrating 40 years of supplying products and solutions that ensure the safety and reliability of industrial heating, lighting...
