ADVERTISEMENT FEATURE SUPPLEMENT COVER STORY
GIVING POWER TO LONDON T
Centaur cable saddles and accessories from Ellis have begun to be installed in National Grid’s London Power Tunnels project
he cable saddles, which are being used to secure high voltage (HV)
cables throughout 32km of tunnels under London, were specified in 2012 in a record £1.5m order for the Yorkshire- based cable cleat manufacturer. Richard Shaw, managing director of Ellis,
said, “While it’s always great to secure a new specification, especially such a large one, it’s even more rewarding seeing the product installed and being used for the purpose for which it was designed.” In the case of the London Power
Tunnels, Ellis secured the specification from Südkabel, the German manufacturer of the cables being installed in the National Grid tunnels, as a result of a design that saw them deliver a product that overcame a serious safety issue surrounding the restraint of HV cables up to 400kV with a diameter range of 100-160mm. “At the time we designed Centaur
mechanical tests. As such there was no proof the saddle cleats being used would withstand the most testing elements of the job they’d been specified for.” Prior to launch Ellis put its new heavy
duty extruded aluminium product through the most rigorous of testing procedures. Using cable manufactured by ABB in Sweden, the company shipped the Centaur cable saddles and ABB cable to the Netherlands where they were tested to 163kA peak and 63kA RMS for one second, in both 3-phase and phase-to- phase fault scenarios. “We invested well over £100,000 in
neither the British nor European Standards took into account cleats on HV cables of this size,” explained Shaw. “This meant those specifying for such jobs were very much in the hands of the manufacturers, who in most cases simply provided warranties for their products. “The problem with this was that none
of the products available had been short circuit tested, and so the warranties were based purely on calculations and
A ONE-STOP-SHOP
KEC, the EMC interconnect specialist, has expanded its capabilities and now provides a complete EMC cable assembly and box kitting service. A designer, manufacturer
and supplier of EMC connector backshells and panel/bulkhead fittings, KEC has, for some time, been working with a growing number of customers to
supply complete cable harness assemblies, and box and enclosure kits. An increased investment in stockholding and personnel,
and an enlarged assembly area and design centre using Solid Works design techniques, has allowed KEC to extend this service and become a one-stop-shop for the design, manufacture and supply of complete cable harness and box kitting EMC solutions. KEC holds stock of its own backshells and panel/bulkhead
fittings, the Provertha range of ‘D’ type backshells and Profibus and M12 connector components, Fastener Specialty ‘Cost Saver’ connector mounting plates and a range of round and flat metal braid. From this stock base KEC can offer EMC solutions on a quick turnaround in both prototype and production quantities.
KEC
www.kec.co.uk T: 0118 981 1571 S4 JUNE 2014 | CABLING & CABLE MANAGEMENT Enter 237
Above: power transmission and distribution on the London Power Tunnels project - Balfour Beatty
designing, developing, testing and bringing Centaur to market,” added Shaw. “At the time this was the largest amount we’d ever invested in one new product, but we did so with confidence that it had the potential to solve a major safety issue and fill a gap in a growing market sector - a confidence that was quickly proven to be well placed.”
Ellis
www.ellispatents.co.uk T: 01944 758 395
Enter 230 OFFERING A SWIFT SOLUTION
Designed to replicate many traditional cable tray fittings, the Swifts Universal Bracket from Legrand has just one part number but literally thousands of uses. Available for Legrand’s medium duty (MRF) and heavy duty (SRF) Swifts cable tray ranges, the bracket is designed to fold easily into numerous configurations, and with nine pre-determined folding points the bracket can be folded, bent, hinged or split simply by over-folding four or five times. The bracket is also an award winner - named the Best Commercial/Industrial
Innovation and Overall Innovative Product of the Year at the 2012 Electrical Industry Awards.
Legrand
www.legrand.co.uk T: 0870 608 9000 Enter 247 / ELECTRICALENGINEERING
Page 1 |
Page 2 |
Page 3 |
Page 4 |
Page 5 |
Page 6 |
Page 7 |
Page 8 |
Page 9 |
Page 10 |
Page 11 |
Page 12 |
Page 13 |
Page 14 |
Page 15 |
Page 16 |
Page 17 |
Page 18 |
Page 19 |
Page 20 |
Page 21 |
Page 22 |
Page 23 |
Page 24 |
Page 25 |
Page 26 |
Page 27 |
Page 28 |
Page 29 |
Page 30 |
Page 31 |
Page 32 |
Page 33 |
Page 34 |
Page 35 |
Page 36 |
Page 37 |
Page 38 |
Page 39 |
Page 40 |
Page 41 |
Page 42 |
Page 43 |
Page 44 |
Page 45 |
Page 46 |
Page 47 |
Page 48 |
Page 49 |
Page 50 |
Page 51 |
Page 52 |
Page 53 |
Page 54 |
Page 55 |
Page 56 |
Page 57 |
Page 58 |
Page 59 |
Page 60 |
Page 61 |
Page 62 |
Page 63 |
Page 64