Cable Cleats

Ellis Patents Cable Guide Clamp – Video

• uploaded by Chris Dodds | Thorne & Derrick Sales Marketing Manager

Ellis Patents

Cable Guide Clamp

Ellis Patents Guide The Way With Guide Clamp Cable Cleats

Ellis Patents, the world leading UK designer and manufacturer of cable cleats have developed the Cable Guide Clamp – a combination of a cable guide and a cable clamp for high voltage (HV) cables.

The Ellis Cable Guide Clamp is designed to be installed in place of rollers along the HV cable route where the cable length is pushed and pulled through to its final destination.

Ellis Patent Guide Clamp was developed to provide a product that could be used during cable installation and then be used to clamp and restrain the HV power cable.

Two Stage Cable Installation & Clamping

The Ellis Cable Guide Clamp works in two simple stages. Firstly during cable pulling, the guide clamps gimballed mounting and slipper nylon construction enables simple installation and cable guiding.

Once the cable has been sufficiently pulled through and placed, the top half of the guide clamp is removed and a LSF polymeric fixing piece installed directly onto the cable.

Then, the top half of the guide clamp is replaced turning it into a fully functioning HV cable clamp. The narrow Ellis Patents design minimises the cable to cable distance resulting in greater flexibility, easier movement and therefore simpler installation.

Cable Guide Clamp Selection Table

Ellis Patents HV Cable Guide & Clamp – Product Dimensions

The Ellis Cable Guide Clamp was originally designed for use on an offshore project by Siemens and has now been developed for use with HV cables in many other potential applications.

Thorne & Derrick

Thorne & Derrick are national distributors of LV, MV & HV Cable Installation, Jointing, Substation & Electrical Equipment – 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 – Heat & Cold-shrink
• Separable Connectors (Euromold)
• Surge Arresters & Switchgear/Transformer Bushings

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 

Cable Cleats & Safe Cable Installations for the Wind Energy Industry

• Republished with the kind permission of Toni Dring Marketing Executive at Ellis Patents

• (World Leaders in the Design & Manufacture of Cable Cleats)
  
  

  

  Short Circuit Cable Cleats | Safe Cable Installations | LV MV HV

uploaded by Chris Dodds – Thorne & Derrick Sales & Marketing Manager

Ellis Patents

With concerns over climate change and fossil fuel security, the world is seeing a significant shift toward renewable energy sources. By 2040, it is expected that renewables could account for 30% of the world’s electricity supply.

Here in Europe, that could be as high as 50%.

One area of renewables which has seen significant growth and development is wind energy.

In the last 30 years, both onshore and offshore wind capacity have seen huge growth and the technology has developed at a fast pace. In fact, the latest turbine models produce 25,000 times as much power compared to the turbines used in the first ever commercial offshore wind farm 30 years ago.

The development of offshore wind turbines over the last 25 years is immense. (Graphic: Ørsted A/S formerly DONG Energy)

New Highs & Lower Costs

The cost of producing energy from wind is falling and relative to other sources, offers a viable renewable alternative. The cost of offshore wind has plummeted by almost 30% in the last two years and when compared to the future Hinkley Point C nuclear power station, costs just £40/MWh versus Hinkley’s expected £92.50.

This is an international trend too.

Globally, the portfolio of offshore wind projects rose 15% in 2019. Whilst Europe remains the largest single region, with significant installed capacity in the UK, Denmark, Germany and the Netherlands, there are significant project pipelines across North America & Asia.

As a world leader in the design and manufacture of cable cleats, Ellis Patents has been involved in ensuring safe cable installation practice on major windfarm projects across the globe. We’ve worked closely with operators, OEMs, EPC companies, cable manufacturers and cable installers, to ensure that we offer the best solution for their cable cleat requirements to safely retain and restrain LV MV HV cables in the event of a short circuit situation.

IEC 61914

As always, Ellis Patents greatest concern is to ensure that cable cleats are correctly specified to cope with the short circuit withstand requirements of the project. The formula below, taken from the International standard IEC 61914, can be used to calculate the forces between two conductors in the event of a three phase fault:

Ft = 0.17 x ip² / S

Where:

Ft = force in Newton/metre (N/m)

ip = peak short-circuit current in kiloamps (kA)

S = distance between the centrelines of the conductors in metres (m)

Once Ft, in N/m, has been determined then the force for each potential cable cleat can be calculated. You can learn more about correctly specifying cable cleats here.

Cable Cleats IEC61914

When it comes to wind farm projects, there are often other considerations in addition to the usual short circuit concerns;

1. High Axial Requirements

When installing cables in the turbine tower, cable weight and the corresponding axial force on the cable cleat must be considered. By design, some cable cleats offer a greater axial load capability than others and therefore lend themselves more favourably to vertical installations.

Ellis Patents has the most extensive range of cable cleat designs on the market and as such, has a range of offerings suitable for vertical installations from stainless steel to polymeric products. With onsite facilities, we can offer testing to specific project requirements in addition to the IEC guidelines.

Inside Wind Turbine Tower. Image: Western Technology inc.

2. Restricted Installation Space & Installation Access

On a range of projects, installation space can be crucial. For wind farms, this could be an issue in the nacelle or inside the tower. No two Ellis Patents cable cleats look the same, offering the client a range of choices for installations.

For example, the Ellis Vulcan+ cleat has a very narrow design, meaning space between cable runs can be minimised. Equally important, the Ellis Emperor cleat offers a low profile design where available headroom is an issue.

Ellis Patents Vulcan Cable Cleats

Ellis Patents Emperor Cable Cleats

3. Cable Routing

On offshore windfarms in particular, large High Voltage (HV) cables have to take lengthy and complex routes to provide electricity distribution at 33kV and 66kV.  In locations such as the Modular Offshore Grid (MOG), similar to large offshore substations, installers require an efficient, safe and cost-effective method to install their cables.

Belgian transmission system operator Elia has awarded Dredging International, part of the DEME Group, with a contract for the subsea cable installation for the Modular Offshore Grid (MOG) in the Belgian part of the North Sea. The installation scope includes the supply, installation and maintenance of the submarine power cables. The contract has been valued to approximately EUR 130 million. More info via offshoreWIND.biz.

Ellis Patents can offer Cable Guide Clamp – a product specifically designed for an offshore project. This cable support product offers a dual function as both a guide, eliminating the need for rollers, and a clamp. Designed with ease of installation at its core, Cable Guide Clamp is manufactured from a low friction polymer and offers a trumpet-like appearance to reduce contact surface area with the cable during pulling.

The wind sector will continue to grow, with a worldwide pipeline of projects already in the wings.

The development of floating wind turbine technology will also open up opportunities for deep-water areas, where fixed turbines are not feasible.

With an international network of distributors, Ellis cable cleats are tried, tested and trusted to safely secure cable on the world’s largest LV MV HV power and infrastructure projects. Please contact us for more information.

Further Reading

• Ellis Patents Cable Cleats & Cable Basket Tray for Securing High Fault Level Cables
• Cable Cleats Help Tackle Copper Cable Theft on Railways
• Stainless Steel Cable Cleats v Cable Ties – The Myths Debunked By Ellis Patents
• The Importance of Cable Cleats on Multi-Core Cables – Video
• Understanding the Importance of Cable Cleats in Offshore Industries

References

The Guardian, 2019

Renewables UK, 2019

OVO Energy, 2018

BBC, 2019

Bloomberg, 2017

LV MV HV Jointing, Earthing, Substation & Electrical Eqpt

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Calculating Oglaend Smart Cable Cleat Spacings On Cable Ladder Installations

Cleats & Clamps | LV MV HV Cables

• uploaded by - Chris Dodds Thorne & Derrick Sales & Marketing Manager

Oglaend

Cable Cleats & Clamps

Theoretical Background
Source: EFI report TR A3901 Jan 1993

The following article and formula enables the calculation of cable cleat/clamp spacings to enable adequate short-circuit restraint of LV MV HV cables onto cable containment in onshore or offshore medium/high voltage substations.

Fb=(0.5 x 0.2 x kApeak2)/a where:

• Fb: Force (N/m)
• kA.peak: Short circuit current peak value (kA)
• a: Distance between the centre points of the cables/cable diameter
• Cable run. Length of cable run

Recommended distance between Oglaend Smart Cleat clamps mounted on cable ladders is shown in the image below:

The calculated number of Oglaend cable clamps is included using Smart Securing Plate in both ends of the cable run.

The distance between the cable clamps should be reduced in vertical and horizontal bends.

The recommended maximum distance between Smart Cleats is 0.9m.

Recommended distance between Oglaend Smart Cleat clamps when not installed on cable ladder is shown in the image below:

At the start and at the end of the cable run it is recommended to install 3 cable cleats with 150mm distance between them. The calculation above is including these cable cleats.

The distance between the cleats must be reduced during vertical and horizontal bends. The maximum recommended distance between Smart Cleats is 0.9m.

Smart Securing Plates

Secure plates are strongly recommended to be used at both ends of a trefoil cable run. Realistic tests done on several cable lengths and clamp distances confirms the theory that the cable must be additionally secured at both ends to reduce arching and eliminate deformation and stretch marks on the cable.

Smart Securing Plates Part References

Distance between Smart Cleats manufactured by Oglaend given that the distance between the centre points of the cables or the cable diameter is 42mm

Smart Cleat

• Smart Cleat saves space – both in cable clamp height and width
• Plastic liners are not required for trefoil installations due to the design of the cable clamp providing a smooth surface
• Manufactured by Oglaend the Smart Cleat is suitable for fixing to preslotted rung design
• Fixing bolts are easily accessible from underneath the rung
• Low weight – compact and light design cable clamps
• The design fixes the cables so close to the rungs, that the rungs in between cleats give full support for distribution of load
• Low product price and low installation cost
• Smart Cleat trefoil cover cables from Ø 25 mm – Ø 99 mm and Smart Cleat single cables from Ø 39 mm – Ø 99 mm
• Smart Cleat is tested up to 160 kA-Peak
• Smart Cleat single and trefoil are certified by DNV according to IEC 61914

Further Reading

• Cable Clamps: The BAND-IT BAND-FAST Range – IEC61914 Tested
• Stainless Steel Cable Cable Cleats v Cable Ties – By Ellis Patents
• Understanding the Importance of Cable Cleats in Offshore Industries
• Stainless Steel Cable Cleats
• A60 H120 Pipework Fire Protection For Offshore Bulkheads & Decks
• IEC 61914 – Cable Cleats & Short Circuit Protection Calculations

Cable Cleat Distributors | Ellis Patents | Torgy | id-Technik

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 

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Ellis Patents Cable Cleats & Cable Basket Tray for Securing High Fault Level Cables

Ellis Patents Basket Tray Clips

• uploaded by Chris Dodds - Thorne & Derrick Sales & Marketing Manager

Ellis Patents Cable Cleats

Ellis Patents Basket Tray Clip

Ellis Patents, the leading manufacturer of cable cleats and clamps, have launched a cable basket tray clip that provides a strong and reliable means of securing low and high voltage cables with high fault levels to the increasingly popular cable management solution when used in conjunction with its heavy duty trefoil cable cleats – manufactured in Type 316L Stainless Steel for excellent corrosion resistance in industrial and hazardous area installations including medium/high voltage substations.

The Ellis Patents cleat clip means cable basket tray can now compete with traditionally stronger cable management solutions such as cable ladder and cable tray on this kind of cable installation.

Richard Shaw, managing director of Ellis Patents said: “the idea for the Ellis Patents clip came about while we were carrying out testing with Cablofil to look at the performance of its basket tray in short-circuit scenarios.

“At the time there was no proven means of safely securing heavy duty cleats to basket so that they would be guaranteed to stay in place in the event of a short-circuit. And with demand for basket tray growing significantly we decided to look at a way of delivering a fixing accessory that would do exactly this.”

The resulting product, the basket tray clip is manufactured in 316L stainless steel and has been tested for use with Ellis Patents Vulcan, Emperor and Alpha trefoil cable cleats.

The cable cleat clip simply snaps in to position on the basket wires and the cable cleats are then secured to it using a standard set screw and flange nut.

Cable Basket Tray Installation Images

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Ellis Cleats | Emperor | Vulcan | Atlas | Phoenix | Single Trefoil Quad Bundled Cables

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 

Cable Cleats Help Tackle Copper Cable Theft on Railways

Cable Theft – Photo Credit: Network Rail

• uploaded by Chris Dodds - Thorne & Derrick Sales & Marketing Manager

Cable Cleats

Crime Busting Cable Cleats Combat Copper Theft

At its peak, cable theft was costing the UK economy £770 million per year but now cable cleat and clamp manufacturer, Ellis Patents, has designed and developed a tamper proof rail cable cleat to beat the thieves.

The Ellis Patents cable cleat design means thieves will not have the time to remove cables before the police arrive.

Reports earlier this month highlighted a dramatic reduction in the incidents of copper earthing and cable thefts from UK railways, and now cable cleat manufacturer, Ellis Patents claims to have developed a means of completely eradicating the problem of rail cable theft.

At its peak, cable theft was estimated to cost the UK economy £770 million per annum.

And even now, after a major crack down by the British Transport Police (BTP), which has been aided by £5 million of Home Office funding, there were 2,700-hours of delays and compensation payments of over £12.7 million in the 12-months to April 2013.

UK Rail Industry: thieves target signalling cables, overhead power lines and even metal fences to sell for scrap.

Ellis Patents, the global leader manufacturer of cable cleats, has designed and developed a tamper proof rail cable cleat that its Managing Director, Richard Shaw says will stop thieves in their tracks.

“The biggest issue with this crime is the ease and speed with which thieves are able to disconnect and remove long lengths of copper cable,” he said.

“The BTP action has aimed to cut off the route to market by banning cash payments by scrap metal dealers in England and Wales and increasing fines for offences under the Scrap Metal Dealers Act, but while the crime remains relatively simple the problem will remain.”

Ellis Patents Tamper Proof Cable Cleats

“Ellis’ tamper proof cable cleat is designed to make removing copper cables nigh on impossible. Its box design makes the job of detaching the cable cleat from the cable it is securing laborious and time consuming, while the requirement to fit the cleats at regular intervals along cable lengths means thieves will simply not have the time to remove cables before the police arrive.”

“Quite often the best solution to a problem is the simplest and our tamper proof cable cleat is certainly a simple, but effective deterrent,” added Richard. “By delivering a great level of security, both in terms of the strength and number of the fixings, we are confident that it will help bring an end to copper cable theft.”

Further Reading

• Ellis Patents No-Bolts Cleats Improve Electrical Safety Of Rail Cable Installations
• Ellis Patents Pegasus Cable Hangers For Rail Cable Support

Ellis Cleats | Emperor | Vulcan | Atlas | Phoenix | Single Trefoil Quad Bundled Cables

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