UKPN London Power Tunnels: Trefoil Cable Cleat Supply
Delivery Date Oct 2016
Project Name London Power Tunnels
Main Contractor Farrans
Sub-Contractor Balfour Beatty, NPG
Project Location Central London
Scope of supply Bespoke Centaur Trefoil
The London Power Tunnels project will create a new 32km electricity super highway deep below the capital, which will help keep Londoners connected to safe and reliable electricity supplies. In some areas of the system power is transmitted via 6 sets of cables in trefoil arrangement, to safely contain these cables a new trefoil cable cleat was required.
Working directly with UK Power Networks (UKPN), Ellis developed a trefoil version of its Centaur cable saddle, a bespoke product that not only allowed the preferred trefoil arrangement of HV cables to be run through a stretch of tunnel between New Cross and Finsbury Market, but also significantly reduce the number of supports required. An essential part of the development process was a product test in a short circuit test station in Prague. For the test the structure used in the tunnel was created and suitable cable shipped from the UK.