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RAILWAY NETWORKS CABLE SOLUTIONS and SERVICES a PRACTICAL GUIDE Nexans Railway 2016 Ok5 30/06/2016 12:17 Page2 Nexans Railway 2016 Ok5 30/06/2016 12:17 Page3

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RAILWAY NETWORKS CABLE SOLUTIONS and SERVICES a PRACTICAL GUIDE Nexans Railway 2016 Ok5 30/06/2016 12:17 Page2 Nexans Railway 2016 Ok5 30/06/2016 12:17 Page3 nexans railway 2016_ok5 30/06/2016 12:17 Page1 RAILWAY NETWORKS CABLE SOLUTIONS AND SERVICES A PRACTICAL GUIDE nexans railway 2016_ok5 30/06/2016 12:17 Page2 nexans railway 2016_ok5 30/06/2016 12:17 Page3 Railway Networks cable solutions and services A practical guide 4 Presentation of Railway Networks cables 9 Fire reaction 13 Euroclasses construction directive for cables 14 Main line power cables & components 16 Main line signalling & communication cables & components 18 Train & subway station power cables & components 20 Station communication & safety cables & components 22 Urban mass transit power cables & components 24 Urban mass transit signalling & communication cables & components 26 Railway networks innovating technologies 28 Product families selection tables nexans railway 2016_ok5 30/06/2016 12:17 Page4 Railway Networks cables standards In a world which already Cables elements, LAN cables & standards that integrate counts around twenty Railway networks probably radiating cables. the type of engines, megalopolies of more contain the broadest range the frequency of the power than 10 million inhabitants of cabling solutions, Every cable family is linked feeding network and the and whose urbanization covering a lot of different to bundles of technical climatic conditions. is still expanding, urban, requirements based upon functions : And the mechanical regional and long local or international • Catenary lines and their requirements linked with distance public transport standards, simultaneously contact wires to power the vibrations induced by networks are steadily fulfilling safety functionalities, the train traction. the pantographs, has developing. like for instance fire • High voltage and medium steadily increased These transportation behaviour. voltage power feeder. proportionally with the solutions are privileged • High, medium and low Catenary cables historical development of because they represent voltage distribution the high speed traffic. the most sustainable networks, as well as Contact wires for catenary transport infrastructures earthing / grounding lines, out of pure or versus all other transport connections. alloyed copper, are based means, particularly those • Signalling and control generally on national using fossil fuels. cables. • Supervision & Communi- In this context the reliability cation cables with twisted of all these railways pairs, coaxial or optical networks and their millions of passengers, is directly linked to the quality of their cabling installations dedicated to power, signalling and communication applications. 4 nexans railway 2016_ok5 30/06/2016 12:17 Page5 The whole product family Medium Voltage (MV) In many national standards, 2. To feed Direct Current include: Cables: they optionally can be (DC) powered regional • Feeding wires in They are deployed either : protected either with heli- or local public transport continuous contact with 1. To feed the transformer cally applied galvanised systems, with voltages the pantograph, stations of the standard steel tapes armour (GSTA) between 750 and 1500V. according to the power distribution network or with a longitudinal corru- They generally correspond European EN 50149 designed to power all gated steel tape (CSTA) or to the International standard or american ASTM B 47 lighting, security, supervision, for single core cables. IEC 60502-1, completed standards. ventilation or information The most used requirements by national standards and • Suspension cables systems of the railroad correspond to Cenelec requirements. maintaining the contact networks, typically with HD 620 or the international The specific requirements wires. operation voltages between IEC 60502-2 specifications. linked with safety regulations • Earthing cables. 15 and 45 kV. are presented in a specific Low Voltage (LV) Cables chapter. 2. To feed the single phased are deployed either: traction power network, 1. To distribute current from either with 15 kV voltage the transformer stations for the countries applying to all lighting, security, 16.7 Hz frequency or supervision or information 25 kV for most of the systems of the railroad countries powering traction networks, typically with with 50 Hz frequency. standard voltages 230 / The cables are generally 400 V. And distribution Power cables comprising Class 2 copper within the stations or Aluminum conductors, High Voltage (HV) Cables: (escalators, elevators, doors, with cross-linked Underground cables screens, cameras, ticketing polyethylene insulation (XLPE) generally feed the substations systems,...) for traction power feeding. covered with a screen They deliver alternative (helically applied copper currents with voltages or aluminium wires). between 46 and 345 kV, as a function of the national dedicated or non-dedicated transport grids. Various constructions exist with EPR insulations up to 138 kV and XLPE insulated conductors up to 345 kV. 5 nexans railway 2016_ok5 30/06/2016 12:17 Page6 Railway Networks cables standards Signalling and control Domains covered by this cables kind of cabling are: Signalling cables cover a wide range of control command and signalling applications from plain electrical interconnect of line-side equipments to LF analog and HF digital data transmission up to 90 kHz. Signals Point machines Level crossings • Twisted pairs or quad The typical constructions Signalling cables interconnect constructions, with typical are based upon copper electronic interlocks with wires of 0.6 to 2.2 mmØ. conductors with either signals, point machines, Given the fact that most paper, polyethylene, level crossings, supervision of the signalling cables sometimes PVC or and control signals, axle are operated in proximity fire-retardant insulation, counters and the speed of the single phase protected by thermoplastic and traffic control balises. traction power supply, or composite sheaths, These cables are classified they are equipped composed of aluminium in 2 categories: wih a protection against tape and polyethylene. • Multicore cables, generally electromagnetic There are also numerous built with concentric perturbation defined by possible combinations of layers of polyethylene the reduction factor. electromagnetic protections or rubber insulated This value is a measure and metallic armors. wires, with rather big of the reduction of The importance of this cross sections between the electromagnetic product range reflects 0.9 and 2.5 mmØ. perturbation. the big variety of services transmitted over these cables. 6 nexans railway 2016_ok5 30/06/2016 12:17 Page7 Hybrid cables The hybrid cables Energy/ Telecom include all cables combining power supply, communication and / or signalling / control applications. They have to present a good level of protection against external electromagnetic perturbations generated by traction power because of the signalling Track circuits Axle counters Eurobalises or communication part of their uses. These cables are designed The most well known European standards and specifications for signalling cables as well to withstand harsh can be summarized by the following table: environmental conditions, with sometimes extreme temperatures, humidity, oil, Country Cables Standards / specifications ultraviolet rays. Most of these versions have also Copper Multicore Cables RENFE E.T 03.365.051.6 Spain to present an improved Copper pair/quad Cables RENFE E.T 03.365.051.6 behavior versus fire for tunnels and stations Copper core Cables NF F 55 622 installations. France Copper pair/quad Cables NF F 55-623 – CT445 They can be composed of individual conductors, DB 416.0113 Copper Multicore Cables filled and unfilled twisted pairs, triads or DB 416.0114 quads with sometimes up to 200 conductors or pairs DB 416.0111 (Rail mounting) Germany generally with polyethylene DB 416.0115 insulation. As all other Copper pair/quad Cables standard signalling cables, DB 416.0120 (Balise) they can be protected DB 416.0116 (gen. Spec) with steel armours. Switzerland Copper Multicore Cables SBB/CFF/FFS 3001.82.1000 7 nexans railway 2016_ok5 30/06/2016 12:17 Page8 Railway Networks cables standards Local Communication • For the STP families: and on the electric fields transmission of voice and Cables ISO / IEC 11801 generated by the eventual data up to high frequencies 2002 ; ISO / IEC power transmission line (up to 2´600 MHz). 61156-5 ; EN50173. installed on the same Thanks to apertures in the infrastructure. outer conductor, they allow Optical fiber cables, with Generally, they correspond to transmit a broad range passive and active to national specifications of radio frequencies in components depending on the confined environment installation method applied like tunnels, subways or in the railway network. buildings. They have been successfully deployed for Radiating Coaxial cables GSM, GSM-R, tetrapol Communication cables for systems, as well as all the Local Area Networks radio frequencies of (LAN) are used for voice, emergency services (fire data and image Optical fiber cables are brigade, police, traffic transmissions used for voice, data and control brigades,...). in stations or railways image transmissions on authority offices. Some long, medium and short fire resisting versions are distances. also available. Basic The growing demand for They are classified in constructions can be wireless services obliges all 2 families: unscreened (UTP), or railways and telecom • The Optical screened (F-FTP), and the operators to deploy Underground Cables highest transmission solutions to cover also (OUC) to be installed performances
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