SNCF Class Z 20900

Z 20900
A Z 20900 trainset operating on the RER C line at Neuilly – Porte Maillot station
In service2001–present
ManufacturerAlstom and Bombardier[1]
Family nameZ 2N series, X'Trapolis Tagus
ReplacedZ5300
Constructed2001–2004
Entered service12 June 2001
Refurbished2019–2023
Number in service54 trainsets (216 cars)
Formation4 cars per trainset
Fleet numbersZ 20901/2 to 21007/8
OperatorsSNCF Transilien
DepotsLes Ardoines
Lines servedRERRER C TransilienTransilien Line V
Specifications
Car body constructionCopper steel Stainless steel
Train length103.508 m (339 ft 7.1 in)
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)
Weight245,000 kg (540,000 lb)
Traction systemAlstom OniX IGBTVVVF
Traction motors8 × 4 FXA 2858 (asynchronous motors)
Power output3,464 kW (4,645 hp)
TransmissionGear wheel, hollow shaft and cardan shaft, ratio : 4.18
Acceleration1 m/s2 (3.3 ft/s2)
Deceleration
  • 1.05 m/s2 (3.4 ft/s2) (service)
  • 1.10 m/s2 (3.6 ft/s2) (emergency)
Electric system(s)
Current collector(s)Pantograph Type AM18
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+12 in) standard gauge

The SNCF Class Z 20900 is a double-deck, dual-voltage electric multiple unit trainset that is operated on line C of the Réseau Express Régional (RER), a hybrid suburban commuter and rapid transit system serving Paris and its Île-de-France suburbs.

The 54 four-car trains were built by a consortium of French manufacturer Alstom and Canadian conglomerate Bombardier between 2001 and 2004. The first set was placed into regular passenger service in July 2001.

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

The introduction of the Z 20900 allowed for the oldest equipment on the RER C to be scrapped.