SNCF Class Z 20500

The SNCF Class Z 20500 is a double-deck, dual-voltage electric multiple unit trainset that are operated by SNCF on the Réseau Express Régional (RER), a hybrid suburban commuter and rapid transit system and the Transilien, a suburban commuter rail system, both serving Paris and its Île-de-France suburbs.

Z 20500
Z 20500 trainset operating on the Transilien Line P line at Gare de l'Est
In service1988–present
ManufacturerANF, CIMT, and GEC Alsthom[1]
Family nameZ 2N series, X'Trapolis Tagus
Constructed1988–1998
Entered service20 september 1988
Refurbished2007–2016, 2019–2023
Number built200 trainsets (934 cars)
Number in service200
Formation4 or 5 cars per trainset
66 trainsets with 4 cars
134 trainsets with 5 cars
Fleet numbersZ 20501/2 to 20899/900
Operator(s)SNCF (RER and Transilien)
Depot(s)
  • Joncherolles
  • Les Ardoines
  • Noisy-le-Sec
  • Villeneuve-Saint-Georges
Line(s) servedRER RER CRER D
Transilien Transilien Line P (Paris-Est)Transilien Line R (Paris-Gare-de-Lyon)
Specifications
Car body constructionCopper steel Stainless steel
Width2.82 m (9 ft 3 in)
Height4.32 m (14 ft 2 in)
Doors2 pairs per side, per car
Maximum speed140 km/h (87 mph)
Weight69t for engine cars, 43t for cars.
Traction systemGEC Alsthom thyristor chopper and thyristor phase sequence inverter
Traction motors8 Asynchronous Motors 4 FHA 2870
Power output2,800 kW (3,800 hp)
TransmissionGear wheel, hollow shaft and cardan shaft, ratio : 4.18
Acceleration1 m/s2 (3.3 ft/s2)
Deceleration
  • 1 m/s2 (3.3 ft/s2) (service)
  • 1.1 m/s2 (3.6 ft/s2) (emergency)
Electric system(s)1,500 V DC or 25 kV 50 Hz AC overhead catenary
Current collector(s)Pantograph (type AM 91BU)
Bogiestype Y401(motor)/Y30PL(trailer), H shape
Braking system(s)Electrodynamic
Safety system(s)Crocodile, KVB
Coupling systemScharfenberg type
Multiple workingOther Z 2N series trains (Z 5600, Z 8800, Z 20500, Z 20900)
Track gauge1,435 mm (4 ft 8+1⁄2 in) standard gauge

The 200 trains were built by a consortium of French manufacturer Alstom (then known as GEC Alsthom), ANF Industrie (which would be purchased by Bombardier in 1989 before the end of the deliveries), and Compagnie industrielle de matériel de transport (CIMT). The final assembly of the trains took place between 1988 and 1998.

They are part of the Z 2N series of trainsets, which were continuously improved over several generations.

Specifications

Formations

The first Z 20500 trainsets delivered included "short" trailer cars that were 24.8 m (81 ft 4 in) in length and nearly identical to those used on the earlier Z 2N series trainsets (Z 5600/Z 8800) and the VB2N. After 1991, the consortium started delivering new "long" trailer cars that were 26.4 m (86 ft 7 in) in length. Over the years, the trailer cars have been shifted around to meet the needs of the different lines.[2]

These are the current configurations of the Z 20500 trainsets:

  • Four long cars: Two motor cars and two long trailer cars. Used on the RER C, Transilien P. Assigned to the Ardoines and Noisy depots.
  • Five long cars: Two motor cars and three long trailer cars. Used on the RER D and Transilien R. Assigned to the Joncherolles and Villeneuve depots.
  • Five short cars, including VB2N car: Two motor cars and two short trailer cars, extended by adding a VB2N car in 2003–2004 and in 2009–2012. Used on the RER D and Transilien R. Assigned to the Joncherolles depot.
  • Five long cars, including VB2N car: Two motor cars and two long trailer cars, extended by adding a VB2N car in 2013. Used on the RER D and Transilien R. Assigned to the Joncherolles depot.

Z 92050
Class Z 92050 in original TER Nord-Pas-de-Calais livery at Arras station

At the start of the 1990s, the Nord-Pas-de-Calais region was looking to purchase double-deck electric multiple unit trainsets to add capacity on its busiest TER routes. In 1994, the region decided to join the Île-de-France's Z 20500 order, ordering six trainsets to be called the Class Z 92050. The fleet is delivered from the end of May to December 1996.[3] The Z 92050 trains are technically identical to the Z 20500, but with a more comfortable 2+2 seating (instead of the 3+2 seating in Z 20500) and the addition of a bathroom in the motor car.

The equipment received heavy use for nearly two decades but as more modern double-deck equipment was delivered (Z 23500, TER 2N NG, and Regio 2N), it became more challenging to have a small and unique type of equipment. So, in December 2012, the Syndicat des transports d'Île-de-France (STIF) offered to purchase the Z 92050 fleet for €16.5 million to be split evenly by STIF and SNCF, operator of the Transilien network.[4] The equipment received some modifications to make them suitable for one operator and then deployed on Transilien Line P.

Fleet

this link leads to the Z20500 fleet page (in french) Z20500 fleet

Description

Exterior

The Z20500 resumes the general architecture of Z5600 / Z8800, drawn by MBD design, having more angular shapes.

The windows have rounded corners, even that of the doors.

Many liveries have existed according to the renovations and wishes of the organizing authority :

  • The "Ile de France" livery, blue white red
  • the "transilien" livery, dark blue with berlingots
  • the "Carmillon" livery (actual SNCF color) black Carmillon white
  • and the "IDFM" livery (colors of the organizing authority) white, blue and black.

Interior

The interior is composed of two intermediate platforms at the ends and a two-level section in the center. The interior colors follow the renovations and the exterior livery in accordance with the exterior livery.

Despite 2 renovations, the Z20500 are not air conditioned, only the windows have a UV filter.

In 2007, the renovation 1 (2007-2016) consists in putting the Transilien livery (then Carmillon livery for the last ones) to remove the partitions of the old first missing classes, to change the organization of the seats from 2 + 2 to 3 + 2, allowing more passengers. The SIVE, "Système d'information voyageurs embarqué" (On-board passenger Information System) is also installed, made up at first of audio announcements (only for the trains running on the RER D), then since 2011, visual devices and Closed-circuit television.

In 2018 begins the renovation 2 (2018 -), The purpose of this work is to improve thermal comfort by affixing athermic films on the windows and by increasing the number of opening windows, to make improvements to the interior fittings (resumption of degraded upholstery, new lamination of the ceilings, replacement of all the seat fabrics, equipment of the platforms with USB sockets, etc.) and to improve passenger information with LED exterior front displays and by installing more loudspeakers . In addition, since 2020 LCD screens have been installed above the doors.

  • The old and the new SIVE for a complete information, in 2021
    The old and the new SIVE for a complete information, in 2021
  • SIVE new generation LCD screens
    SIVE new generation LCD screens

Formations

Line C

As of 25 December 2021, 45 Z20500 trainsets are based at the Les Ardoines SNCF depot.

As shown below, they are formed with two motored cars and two non-powered (trailer) cars (2M2T).

 
← Versailles/Pontoise/St Quentin-en-Yvelines
Juvisy/Massy-Palaiseau/Saint-Martin-d'Étampes →
 
 
Car No.1 >23< 4
Type MotorTrailerTrailerMotor
Numbering Z 20xx (even number)ZRB 201xxx (odd number)ZRB 202xxx (odd number)Z 20xx (odd number)
  • < or > show a pantograph. Cars 1 and 4 are each equipped with one pantograph.
  • Car 2 was formerly a mixed 1st class and 2nd class car.

Line P

As of 25 December 2021, 21 Z20500 trainsets were based at the Noisy le Sec SNCF depot.

As shown below, they are formed with two motored cars and two non-powered (trailer) cars (2M2T).

 
← Gare de l'Est (Paris)
Meaux/Château Thierry →
 
 
Car No.1 >23< 4
Type MotorTrailerTrailerMotor
Numbering Z 20xx (even number)ZRB 201xxx (odd number)ZRB 202xxx (odd number)Z 20xx (odd number)
  • < or > show a pantograph. Cars 1 and 4 are each equipped with one pantograph.
  • Car 2 was formerly a mixed 1st class and 2nd class car.

Line D

As of 25 December 2021, 134 Z20500 trainsets were based at the Villeneuve and Les Joncherolles SNCF depots.

As shown below, they are formed with two motored cars and three non-powered (trailer) cars (2M3T).

 
← Creil
Corbeil-Essonnes/Malesherbes/Melun →
 
 
Car No.1 >234< 5
Type MotorTrailerTrailerTrailerMotor
Numbering Z 20xx (even number)ZRB 201xxx (odd number)ZRB 202xxx (odd number)ZRB 203xxx (odd number)Z 20xx (odd number)
  • < or > show a pantograph. Cars 1 and 5 were each equipped with one pantograph.
  • Car 3 was formerly a mixed 1st class and 2nd class car
Wikimedia Commons has media related to SNCF Class Z 20500.

Exterior
  • Z 20500 on RER C in original Île-de-France livery
    Z 20500 on RER C in original Île-de-France livery
  • Transilien running MERI service
    Transilien running MERI service
  • Z 20500 in Transilien livery in Cesson
    Z 20500 in Transilien livery in Cesson
  • Full view of Z 20500 in Transilien livery near Moret-sur-Loing
    Full view of Z 20500 in Transilien livery near Moret-sur-Loing
  • Z 20500 in Transilien livery near Moret-sur-Loing
  • Z 20500 in Carmillon/STIF livery at Pontoise station
    Z 20500 in Carmillon/STIF livery at Pontoise station
  • Z 20500 in newest Île-de-France Mobilités livery at Malesherbes station
    Z 20500 in newest Île-de-France Mobilités livery at Malesherbes station

Interior
  • Original interior of Z 20500 train
    Original interior of Z 20500 train
  • Original interior of Z 92050 train
    Original interior of Z 92050 train
  • Z 20500 interior after first renovation
    Z 20500 interior after first renovation
  • Z 20500 interior after second renovation
    Z 20500 interior after second renovation
  • Operators compartment
    Operators compartment
  • Customer information display
    Customer information display
  • Customer information display
    Customer information display
  • USB socket
    USB socket

References
  1. http://fbrisou.free.fr/RAIL21/fichez20500
  2. "Les Z2N - transportparis - Le webmagazine des transports parisiens". transportparis.canalblog.com (in French). 23 November 2013. Retrieved 18 January 2021.
  3. Constant, Olivier (2014). Les automotrices bicourant et les trams-trains. p. 31.
  4. délibération no 2012/393 du conseil du STIF du 13 décembre 2012, pages 7 et 8.

Bibliography
  • Collardey, Bernard (November 1996). "Des Z 2N renforcent le parc TER du Nord-Pas-de-Calais". Rail Passion. Vol. 12.
  • Redoutey, Denis (22 November 2012). Le matériel moteur SNCF en 2012. Saint-Étienne: La Vie du Rail. pp. 159–160. ISBN 978-2-918758-60-0.
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