EoW November 2012

News Corporate

Data centres using Datwyler

The city of Zurich, Switzerland, is using Datwyler cabling systems in the conversion and construction of its data centres. Thanks to largely pre-assembled solutions TurnKey Communication AG has been able to implement quick, space-saving installations, which will also allow reliable transmission of future applications. On the two data centre sites the installation teams created altogether around 10,000 fibre optic and 4,200 copper links. Zurich Organisation and Informatics (OIZ) is the city’s centre of IT expertise, responsible for the provision of basic IT services and interdepartmental IT projects. As part of the municipal IT strategy, which is based on standardisation and consolidation, OIZ has built a second data centre in the metropolitan area, in the industrial area of Hagenholz, for the redundant provision of key components in parallel to the data centre in Albisrieden. At the end of August 2011 the city of Zurich awarded Maréchaux Elektro AG the contract for communications cabling to both data centre sites. This company commissioned TurnKey Communication AG to carry out the detailed planning and the cabling work for the project. Turnkey collaborated with Datwyler in selecting a new premium quality cabling solution. The fibre optic (FO) system is a modularly expandable solution recently developed by Datwyler, allowing packing densities of up to 96 fibres per rack unit (U). It is based on sub-racks fitted with pre-assembled slide-in cassettes (FO modules).

▲ ▲ The city of Zurich, Switzerland, is using Datwyler cabling systems in its data centres

For the termination of the copper cables Datwyler supplied 135 3U sub-racks with 1,160 modular 6-port front panels and 285 1U panels with 24 ports. The scope of the delivery also included 13,300 FO duplex and 9,100 copper patch cables for the connection of active devices. Acceptance testing of more than 14,000 links in total was carried out on completion of each construction phase, most recently in spring 2012. Thanks to the MTP Elite ferrules and the very precise connector configuration used by Datwyler, the cables and modules achieved excellent insertion and return loss values. Datwyler – Germany Website : www.datwyler.com

On the back of each of these modules are two MTP couplers, and they are cabled with MTP mini-trunks. At the front they provide OIZ with 12 LC Duplex or E2000 connections as required. The 10G-capable copper cabling installed in parallel consists of Category 7 type CU 7702 4P data cables and IEC Standard-compliant Cat. 6A RJ45 modules, pre-assembled to one end. The other end was terminated on-site. The FO trunk variants used in the data centre sites include trunks with 12, 24, 48, 72 and 144 fibres, pre-assembled with MTP, LCD or E2000 connectors. In the central distribution racks the mini-trunks – almost all of them with bend-optimised OM3 multimode fibres – are lined up with 1,500 FO modules in 270 sub-racks with 4U (including patch management tray) and in the server racks in 210 FO panels with 1U.

It’s full steam ahead for Tratos cables Tratos Cavi SpA has been awarded the contract to supply DP World with Tratosflex ESDB reeling cables for installation in the cranes at the Jebel Ali port in Dubai.

the common problem of twisting that affects cables reeling at high speed. Twisting makes cable cores elongate unevenly which in turn leads to conductors on the outer layer of a strand facing a greater risk of being broken. A broken cable reeling at high speed is dangerous and can cause extensive and costly damage to equipment. A medium voltage rubber insulated and sheathed drum reeling cable, Tratosflex ESDB operates in temperatures from -20ºC to +60ºC. Tratosflex ESDB is one of the range of cables for moving applications from Tratos, which include mono-spiral and multi-spiral reeling, basket reeling, festoons and spreaders. The cables can supply power, control and signalling functions including fibre-optic cables and components. Tratos Cavi SpA – UK Website : www.tratos.co.uk The Tratosflex ESDB cable ▲ ▲

The port is in the process of electrifying its existing diesel-driven RTG cranes as a means of significantly reducing energy costs and CO 2 emissions. As part of this process, Tratosflex ESDB cables will be fitted to the newly electrified cranes. The decision to specify Tratosflex ESDB cables was based on a combination of quality product used extensively in similar applications worldwide (including the Busan Port terminal in Korea) and strong local support from the Tratos office located in Jebel Ali Free Zone. Tratosflex ESDB is different from other reeling cables available in that Tratos engineers have modified the internal cable design, tightening the structure against the internal relative movement to accommodate high speed applications; this prevents

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November 2012