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SNCF TGV Duplex

This article's factual accuracy is disputed. Relevant discussion may be found on the talk page. Please help to ensure that disputed statements are reliably sourced.(June 2012) ()

The TGV Duplex is a French high-speed train of the TGV family, manufactured by Alstom, and operated by the French national railway company SNCF. It is unique among TGV trains in that it features bi-level carriages. The Duplex inaugurated the third generation of TGV trainsets. It was specially designed to increase capacity on high-speed lines with saturated traffic. With two seating levels and a seating capacity of 508 passengers, the Duplex increases the passenger capacity. While the TGV Duplex started as a small component of the TGV fleet, it has become one of the system's workhorses.

SNCF TGV Duplex
TGV Duplex going back to Paris from Modane and passing in Saint-Jean-de-la-Porte, Savoie, France.
First class on a TGV Duplex
ManufacturerGEC-Alsthom, Alstom
Family nameTGV
Constructed1995–2012
Number built89 trainsets (Duplex)
52 trainsets (Dasye)
19 trainsets 6xx (Réseau Duplex)
Formation10 cars (2 power cars, 8 passenger cars)
Capacity508 seats
Operator(s)SNCF
Specifications
Train length200 m (656 ft)
Height4,320 mm (14 ft 2 in)
Maximum speed320 km/h (199 mph)
Weight380 t (374 long tons; 419 short tons)
Traction systemAlstom/GEC Alsthom GTO– or IGBTVVVF
Traction motors
  • Duplex: 8 × Alstom SM 47 1,100 kW (1,500 hp) 3-phase AC synchronous motor
  • Dasye: 8 × Alstom 6 FHA 1,160 kW (1,560 hp) 3-phase AC asynchronous motor
Power output
  • 3,680 kW (4,930 hp) (Duplex & Dasye; under 1.5kV DC supply)
  • 8,800 kW (11,800 hp) (Duplex; under 25kV AC supply)
  • 9,280 kW (12,440 hp) (Dasye; under 25kV AC supply)
Electric system(s)
Current collection methodPantograph
UIC classificationBo'Bo'+2'2'2'2'2'2'2'2'2'+Bo'Bo'
Braking system(s)Regenerative & Pneumatic
Safety system(s)ERTMS level 2, TVM-430, KVB
Multiple workingUp to two units (3 on maintenance)
Track gauge1,435 mm (4 ft8+12 in)standard gauge
Bi-level carriages allow 45% more capacity than in a single level TGV.

The LGV Sud-Est from Paris to Lyon is the busiest high-speed line in France.[citation needed] After its opening in 1981 it rapidly reached capacity. Several options were available to increase capacity. The separation between trains was reduced to three minutes on some TGV lines, but the increasingly complex signalling systems, and high-performance brakes (to reduce braking distance) required, limited this option. Another option is to widen the train but is generally not practicable due to loading gauge restrictions. Running two trainsets coupled together in multiple-unit (MU) configuration provides extra capacity, but required very long station platforms. Given length and width restrictions, the remaining option is to adopt a bi-level configuration, with seating on two levels, adding 45% more passenger capacity. TGV Duplex sets are often run with a single deck Réseau set or another Duplex set.

The Duplex feasibility study was completed in 1987. In 1988, a full-scale mockup was built to gauge customer reactions to the bi-level concept, traditionally associated with commuter and regional rail rather than with high-speed intercity trains. A TGV Sud-Est trailer was tested in revenue service with the inside furnished to simulate the lower floor of a bi-level arrangement, and later that year another TGV Sud-Est was modified to study the dynamic behavior of a train with a higher center of gravity. Discussions with GEC-Alsthom began soon after, and in July 1990 the company won the contract to build the "TGV-2N", as it was then known. The contract was finalized in early 1991, at which point the official order was made. The first tests of a bi-level trainset were in November 1994. Soon after their first run, the first rake of eight trailers was tested at 290 km/h (180 mph) on the Sud-Est line. The trainset was powered by TGV Réseau power cars at the time, as the Duplex power cars were not ready. The first Duplex power car was mated to the bi-level trailers on 21 June 1995.

Perhaps the most important innovation is the efficiency of the Duplex design. Comparing an original TGV Sud-Est and a Duplex trainset shows that the double-decker design has improvements in both power-to-weight ratio and weight-per-seat overhead:

Power-to-weight ratio
(kW/tonne)
Weight/seat
(tonne)
Power/seat
(kW)
TGV Sud-Est 17 1.10 18.34
TGV Duplex 23 0.7 16.15

In this comparison, "power" refers to installed power, not all of which is used when operating.

  • Aluminium bodies: the strict requirement of a 17-tonne (16.7-long-ton; 18.7-short-ton) axle load limit made it imperative to cut down on weight, wherever possible. Extruded aluminum construction made possible a 20% reduction in structure weight.
  • Improved styling and aerodynamics: the nose of the power units and the gap between trailers were improved such that a Duplex train at cruise speed of 300 km/h (186 mph) experiences only 4% more drag than a single-level TGV. The nose, the first significant departure from Cooper's original design, was styled by industrial designer Roger Tallon, as was the rest of the trainset.
  • Crashworthiness: crush zones and rigid passenger compartments protect safety in the event of a collision. The power units' frame is designed to take a (steady-state) 500 tonnes (490 long tons; 550 short tons) of force frontal load, and features structural fuses to absorb impact energy.
  • Active pantograph: the Faiveley CX used on the Duplex has a pneumatically actuated active control system. Two small gas cylinders in the wiper armature can tune the stiffness of the pantograph's upper stage, to optimize contact at any speed.
  • All wheel disc brakes: earlier TGVs (including Eurostar) used disc brakes only on unpowered axles. Weight gains on the Duplex power units allowed the installation of disc brakes directly on the wheels of powered axles (so-called "cheek discs"), instead of using the traditional tread brakes. This does not greatly improve braking performance, but it leaves the wheel tread smooth and considerably reduces rolling noise.
  • Quiet roof fans: the cooling fans in TGV power units produce the most noticeable sound (a loud hum) when the train is in a station. The fans, located in the roof of the unit, were redesigned to be quieter.
  • World's fastest train: in 2007 a short formation TGV Duplex was fitted with distributed traction as used in the future generation AGV (automotrice à grande vitesse) setting a new speed record of 574.8 km/h (357.2 mph). (see TGV world speed record#Record of 2007)
Réseau Duplex at Gare de Lyon, in Carmillion livery
Réseau Duplex on the LGV Méditerranée

Also known as Réseau Duplex, they take the serial number 600 (601-619). This version came into existence when the carriages of nineteen Réseau sets were used to create the POS sets. The Réseau powercars of these sets, with some aerodynamic adjustments, joined new Duplex sets. They were the first series of "inter-recoupled series" TGV to achieve a sustainable basis by SNCF.

Instead of ordering brand new POS sets, the railways modified a pre-existing order for 19 Duplex as follows:

  • 19 sets of 8 Duplex-carriages, identical to the original TGV Duplex (Series 200), powered by the 38 surplus TGV Réseau powercars.
  • 38 new tri-current powercars, based on the Duplex-version, making them suitable for use on the Deutsche Bahn's and Swiss Federal Railways' networks. These were joined to the nineteen sets of Réseau carriages, renovated by Christian Lacroix, becoming the series "4400" or TGV POS.

Their livery is identical to that of other Duplex units. Also called "duplex" (with a lower case "d"), these 19 units, numbered from 601 to 619, are all maintained at the Technicentre South-East Europe depot. This "tinkering" allowed the railways to maintain the pace of delivery of Duplex which was considered a priority.

Dasye is a contraction of Duplex Asynchronous ERTMS. The series has a similar design to the classic Duplex series, with internal changes.

These trains are numbered in the "700" class. They feature a new powertrain with asynchronous motors of the same type as that of the motor TGV POS, and they are equipped with ERTMS. Train 701 was delivered in late 2006 and joined with the carriages of Duplex-Réseau unit 619 for pre-production tests. Unit 701 was delivered complete on 14 February 2008.

In June 2007, the SNCF ordered 25 additional Dasye Duplex trainsets. Part of this order is for 55 tri-current trains, a new type high-speed train, and two levels (TGV 2N2) and a reserve engine, permitting a relationship between France and Germany or Switzerland; Alstom call this "Euroduplex".

These trains were planned to strengthen the connections to the south, including the LGV Perpignan–Figueres, allowing joint Franco-Spanish operation. They were completed in February 2010 and used from December 2010 on two round trip Paris - Figueres and in December 2013 for Paris - Barcelona. This new infrastructure was designed for high-speed train traffic, AVE and freight. The 200 and 600 series will not enter the Spanish network, because they are not equipped with ERTMS.

Ninety-five Euroduplex trains were used on the recently opened LGV Rhin-Rhône; made up of the original fifty-five, plus an additional forty ordered by SNCF in April 2012.

The interior trim has new colors (blue) and new interior (with electrical outlets at the seat in the 1st and 2nd class), the remaining facilities are similar to those of duplex and an indicator of the speed of a TGV has been installed in the bar car, above the bar.

Main article: Eurotrain
The Eurotrain demonstration train at Munich-Laim on 4 April 1998

Eurotrain was a consortium formed by Siemens and GEC-Alsthom (today Alstom) in 1996 to market high-speed rail technology in Asia. In 1997, it was one of two competitors to supply the core system of Taiwan High Speed Rail (THSR), and was awarded the status of preferred bidder by concessionaire THSRC.

In early 1998, the consortium created a demonstration train by combining cars of three existing French and German high-speed trains: the intermediate cars of TGV Duplex trainset #224 was joined with German Railways ICE 2 powerheads 402 042 and 402 046 at the two ends. On 4 May 1998, the Eurotrain demonstration train made a presentation run on the Hanover–Würzburg high-speed railway in Germany, achieving a maximum speed of 316 km/h (196 mph).

In December 2000, THSRC awarded the contract to the rival Taiwan Shinkansen Consortium, leading to a legal battle ending in damage payments for Eurotrain in 2004.

Wikimedia Commons has media related toTGV Duplex.
  1. "Railway Gazette: SNCF orders 40 Euroduplex sets". Railway Gazette International. Retrieved3 April 2012.
  2. "Editorial: THSRC agreement unprincipled". Taipei Times. 30 January 2000. Retrieved3 October 2010.
  3. "Weitere ICE-Züge" (in German). Website über die schnellsten Züge der Welt. Archived from the original on 18 January 2009. Retrieved19 January 2009.
  4. "TGV Research Activities". TGVweb. Retrieved19 January 2009.
  5. "Eurotrain appeal rejected, might go international". Taipei Times. 17 June 2000. Retrieved28 January 2009.
  6. "Eurotrain Consortium v. Taiwan High Speed Rail Corporation". Analysis Group. Archived from the original on 7 July 2011. Retrieved29 September 2010.
  7. "Taiwan High Speed Rail to compensate railway consortium". Taipei Times. 27 November 2004. Retrieved28 January 2009.
This article was originally based on material from TGVweb, which is licensed under the GFDL.

SNCF TGV Duplex
SNCF TGV Duplex Language Watch Edit This article s factual accuracy is disputed Relevant discussion may be found on the talk page Please help to ensure that disputed statements are reliably sourced June 2012 Learn how and when to remove this template message The TGV Duplex is a French high speed train of the TGV family manufactured by Alstom and operated by the French national railway company SNCF It is unique among TGV trains in that it features bi level carriages The Duplex inaugurated the third generation of TGV trainsets It was specially designed to increase capacity on high speed lines with saturated traffic With two seating levels and a seating capacity of 508 passengers the Duplex increases the passenger capacity While the TGV Duplex started as a small component of the TGV fleet it has become one of the system s workhorses SNCF TGV DuplexTGV Duplex going back to Paris from Modane and passing in Saint Jean de la Porte Savoie France First class on a TGV DuplexManufacturerGEC Alsthom AlstomFamily nameTGVConstructed1995 2012Number built89 trainsets Duplex 52 trainsets Dasye 19 trainsets 6xx Reseau Duplex Formation10 cars 2 power cars 8 passenger cars Capacity508 seatsOperator s SNCFSpecificationsTrain length200 m 656 ft Height4 320 mm 14 ft 2 in Maximum speed320 km h 199 mph Weight380 t 374 long tons 419 short tons Traction systemAlstom GEC Alsthom GTO or IGBT VVVFTraction motorsDuplex 8 Alstom SM 47 1 100 kW 1 500 hp 3 phase AC synchronous motor Dasye 8 Alstom 6 FHA 1 160 kW 1 560 hp 3 phase AC asynchronous motorPower output3 680 kW 4 930 hp Duplex amp Dasye under 1 5kV DC supply 8 800 kW 11 800 hp Duplex under 25kV AC supply 9 280 kW 12 440 hp Dasye under 25kV AC supply Electric system s 25 kV 50 Hz AC 1 500 V DC 15 kV 16 7 Hz AC tri current version of Reseau Duplex for Germany and Switzerland destinations All of which from overhead catenaryCurrent collection methodPantographUIC classificationBo Bo 2 2 2 2 2 2 2 2 2 Bo Bo Braking system s Regenerative amp PneumaticSafety system s ERTMS level 2 TVM 430 KVBMultiple workingUp to two units 3 on maintenance Track gauge1 435 mm 4 ft 8 1 2 in standard gaugePurpose Edit Bi level carriages allow 45 more capacity than in a single level TGV The LGV Sud Est from Paris to Lyon is the busiest high speed line in France citation needed After its opening in 1981 it rapidly reached capacity Several options were available to increase capacity The separation between trains was reduced to three minutes on some TGV lines but the increasingly complex signalling systems and high performance brakes to reduce braking distance required limited this option Another option is to widen the train but is generally not practicable due to loading gauge restrictions Running two trainsets coupled together in multiple unit MU configuration provides extra capacity but required very long station platforms Given length and width restrictions the remaining option is to adopt a bi level configuration with seating on two levels adding 45 more passenger capacity TGV Duplex sets are often run with a single deck Reseau set or another Duplex set History EditThe Duplex feasibility study was completed in 1987 In 1988 a full scale mockup was built to gauge customer reactions to the bi level concept traditionally associated with commuter and regional rail rather than with high speed intercity trains A TGV Sud Est trailer was tested in revenue service with the inside furnished to simulate the lower floor of a bi level arrangement and later that year another TGV Sud Est was modified to study the dynamic behavior of a train with a higher center of gravity Discussions with GEC Alsthom began soon after and in July 1990 the company won the contract to build the TGV 2N as it was then known The contract was finalized in early 1991 at which point the official order was made The first tests of a bi level trainset were in November 1994 Soon after their first run the first rake of eight trailers was tested at 290 km h 180 mph on the Sud Est line The trainset was powered by TGV Reseau power cars at the time as the Duplex power cars were not ready The first Duplex power car was mated to the bi level trailers on 21 June 1995 Innovations EditPerhaps the most important innovation is the efficiency of the Duplex design Comparing an original TGV Sud Est and a Duplex trainset shows that the double decker design has improvements in both power to weight ratio and weight per seat overhead Power to weight ratio kW tonne Weight seat tonne Power seat kW TGV Sud Est 17 1 10 18 34TGV Duplex 23 0 7 16 15 In this comparison power refers to installed power not all of which is used when operating Aluminium bodies the strict requirement of a 17 tonne 16 7 long ton 18 7 short ton axle load limit made it imperative to cut down on weight wherever possible Extruded aluminum construction made possible a 20 reduction in structure weight Improved styling and aerodynamics the nose of the power units and the gap between trailers were improved such that a Duplex train at cruise speed of 300 km h 186 mph experiences only 4 more drag than a single level TGV The nose the first significant departure from Cooper s original design was styled by industrial designer Roger Tallon as was the rest of the trainset Crashworthiness crush zones and rigid passenger compartments protect safety in the event of a collision The power units frame is designed to take a steady state 500 tonnes 490 long tons 550 short tons of force frontal load and features structural fuses to absorb impact energy Active pantograph the Faiveley CX used on the Duplex has a pneumatically actuated active control system Two small gas cylinders in the wiper armature can tune the stiffness of the pantograph s upper stage to optimize contact at any speed All wheel disc brakes earlier TGVs including Eurostar used disc brakes only on unpowered axles Weight gains on the Duplex power units allowed the installation of disc brakes directly on the wheels of powered axles so called cheek discs instead of using the traditional tread brakes This does not greatly improve braking performance but it leaves the wheel tread smooth and considerably reduces rolling noise Quiet roof fans the cooling fans in TGV power units produce the most noticeable sound a loud hum when the train is in a station The fans located in the roof of the unit were redesigned to be quieter World s fastest train in 2007 a short formation TGV Duplex was fitted with distributed traction as used in the future generation AGV automotrice a grande vitesse setting a new speed record of 574 8 km h 357 2 mph see TGV world speed record Record of 2007 Reseau Duplex Edit Reseau Duplex at Gare de Lyon in Carmillion livery Reseau Duplex on the LGV Mediterranee Also known as Reseau Duplex they take the serial number 600 601 619 This version came into existence when the carriages of nineteen Reseau sets were used to create the POS sets The Reseau powercars of these sets with some aerodynamic adjustments joined new Duplex sets They were the first series of inter recoupled series TGV to achieve a sustainable basis by SNCF Instead of ordering brand new POS sets the railways modified a pre existing order for 19 Duplex as follows 19 sets of 8 Duplex carriages identical to the original TGV Duplex Series 200 powered by the 38 surplus TGV Reseau powercars 38 new tri current powercars based on the Duplex version making them suitable for use on the Deutsche Bahn s and Swiss Federal Railways networks These were joined to the nineteen sets of Reseau carriages renovated by Christian Lacroix becoming the series 4400 or TGV POS Their livery is identical to that of other Duplex units Also called duplex with a lower case d these 19 units numbered from 601 to 619 are all maintained at the Technicentre South East Europe depot This tinkering allowed the railways to maintain the pace of delivery of Duplex which was considered a priority Dasye EditDasye is a contraction of Duplex Asynchronous ERTMS The series has a similar design to the classic Duplex series with internal changes These trains are numbered in the 700 class They feature a new powertrain with asynchronous motors of the same type as that of the motor TGV POS and they are equipped with ERTMS Train 701 was delivered in late 2006 and joined with the carriages of Duplex Reseau unit 619 for pre production tests Unit 701 was delivered complete on 14 February 2008 In June 2007 the SNCF ordered 25 additional Dasye Duplex trainsets Part of this order is for 55 tri current trains a new type high speed train and two levels TGV 2N2 and a reserve engine permitting a relationship between France and Germany or Switzerland Alstom call this Euroduplex These trains were planned to strengthen the connections to the south including the LGV Perpignan Figueres allowing joint Franco Spanish operation They were completed in February 2010 and used from December 2010 on two round trip Paris Figueres and in December 2013 for Paris Barcelona This new infrastructure was designed for high speed train traffic AVE and freight The 200 and 600 series will not enter the Spanish network because they are not equipped with ERTMS Ninety five Euroduplex trains were used on the recently opened LGV Rhin Rhone made up of the original fifty five plus an additional forty ordered by SNCF in April 2012 1 The interior trim has new colors blue and new interior with electrical outlets at the seat in the 1st and 2nd class the remaining facilities are similar to those of duplex and an indicator of the speed of a TGV has been installed in the bar car above the bar Eurotrain EditMain article Eurotrain The Eurotrain demonstration train at Munich Laim on 4 April 1998 Eurotrain was a consortium formed by Siemens and GEC Alsthom today Alstom in 1996 to market high speed rail technology in Asia In 1997 it was one of two competitors to supply the core system of Taiwan High Speed Rail THSR and was awarded the status of preferred bidder by concessionaire THSRC 2 In early 1998 the consortium created a demonstration train by combining cars of three existing French and German high speed trains the intermediate cars of TGV Duplex trainset 224 was joined with German Railways ICE 2 powerheads 402 042 and 402 046 at the two ends On 4 May 1998 the Eurotrain demonstration train made a presentation run on the Hanover Wurzburg high speed railway in Germany achieving a maximum speed of 316 km h 196 mph 3 4 In December 2000 THSRC awarded the contract to the rival Taiwan Shinkansen Consortium 2 leading to a legal battle 5 ending in damage payments for Eurotrain in 2004 6 7 See also EditWikimedia Commons has media related to TGV Duplex List of high speed trains TGV POS Thalys EurotrainReferences Edit Railway Gazette SNCF orders 40 Euroduplex sets Railway Gazette International Retrieved 3 April 2012 a b Editorial THSRC agreement unprincipled Taipei Times 30 January 2000 Retrieved 3 October 2010 Weitere ICE Zuge in German Website uber die schnellsten Zuge der Welt Archived from the original on 18 January 2009 Retrieved 19 January 2009 TGV Research Activities TGVweb Retrieved 19 January 2009 Eurotrain appeal rejected might go international Taipei Times 17 June 2000 Retrieved 28 January 2009 Eurotrain Consortium v Taiwan High Speed Rail Corporation Analysis Group Archived from the original on 7 July 2011 Retrieved 29 September 2010 Taiwan High Speed Rail to compensate railway consortium Taipei Times 27 November 2004 Retrieved 28 January 2009 This article was originally based on material from TGVweb which is licensed under the GFDL Retrieved from https en wikipedia org w index php title SNCF TGV Duplex amp oldid 1049970194, wikipedia, wiki, book,

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