Safety cable for Munich's underground railway
A
Datwyler (UK) product story
Edited by the Engineeringtalk editorial team
Nov 17, 2006
Datwyler Cables to supply Munich's underground railway company with safety cable for extensions to lines 3 and 6.
Datwyler Cables is to supply Munich's underground railway company with the safety cable for the extensions to lines 3 and 6.
The aim of this extension is to provide better connections between the Garching research site and the Moosach district as from 2007.
Most of the heavy duty cables for the new stretch of line come from Datwyler Cables.
In the north of Munich a total of 100 kilometres of safety cable has already been laid.
These are halogen-free cables and, in case of fire, are guaranteed to function as designed to last for at least 30 minutes.
Datwyler safety cables are being installed in the new sections of the underground railway and are also used, among other things, for emergency lighting, lifts and emergency power supply.
An important requirement for this project was that the cables have been awarded the necessary test certificates for use with different carrier systems.
In addition, they offer the advantage of large installation lengths between mounting clamps (up to 1.20m when laid individually).
Individual stretches underneath the railway stations are equipped with Hermann cable supports from Datwyler.
"Safety cables equipped with these multi-cable supports for cable installations with functional content can be installed efficiently and cost-effectively," explains Johannes Peter, owner of Elektro Peter who are responsible for the mounting and installation of the electrical plant.
The laying of emergency power supply cabling is very demanding.
This involves a six centimetre thick safety cable of type Datwyler Pyrofil Keram (N)HXCH 4x185/95 FE 180 / E30 which has to be laid at a height of approximately five metres, from station to station.
Because of its halogen-free Keram insulation this cable is relatively light; however, it still weighs around eleven tonnes per kilometre.
Pyrofil safety cable from Datwyler fulfils state building regulations, which stipulate that the functional content of the total length of the cable must comply with the DIN 4102-12 requirement of at least 30 minutes functioning for all electrical plant.
It is in underground railway tunnels that safety cables make an important contribution towards minimising the spread of fire: on the one hand they supply the installed safety systems during evacuation of the passengers over an adequate period of time.
On the other hand they help health and material damage to be avoided or at least reduced.
Safety cables from Datwyler are used everywhere where large numbers of people gather and where there are very high requirements for protection from fire: underground railways, stations, airports, office blocks, hospitals, hotels and sports stadiums, as well as concert halls and theatres.
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