TGV Duplex

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SNCF TGV Duplex
TGV Duplex traveling to Paris from Modane and passing in Saint-Jean-de-la-Porte, Savoie, France
First class on a TGV Duplex
In service	1995–present
Manufacturer	Alstom
Family name	TGV
Constructed	1995–2012
Number built	160 trainsets total:     89 Duplex     19 Réseau Duplex     52 Dasye
Formation	2 power cars + 8 passenger cars
Fleet numbers	201–289 (Duplex) 601–619 (Réseau Duplex) 701–752 (Dasye)
Capacity	510 seats (182 first class, 328 second class) 644 seats (all second class)
Operators	SNCF
Specifications
Train length	200 m (656 ft 2 in)
Width	2,896 mm (9 ft 6.0 in)
Height	4,303 mm (14 ft 1.4 in)[1]
Doors	1 per side, per car
Maximum speed	320 km/h (199 mph)
Weight	380 t (374 long tons; 419 short tons)
Traction system	Duplex: Alstom GTO thyristor control Dasye: Alstom IGBT–VVVF
Traction motors	Duplex: 8× Alstom SM 47 1,100 kW (1,475 hp) 3-phase AC synchronous motor Dasye: 8× Alstom 6 FHA 1,160 kW (1,556 hp) 3-phase AC asynchronous motor
Power output	3,680 kW (4,935 hp) (DC) 8,800 kW (11,801 hp) (Duplex, AC) 9,280 kW (12,445 hp) (Dasye, AC)
Electric system(s)	Overhead line:     25 kV 50 Hz AC     1,500 V DC
Current collector(s)	Pantograph
UIC classification	Bo′Bo′+2′2′2′2′2′2′2′2′2′+Bo′Bo′
Braking system(s)	Regenerative, pneumatic
Safety system(s)	Duplex: TVM-430, KVB Dasye: ERTMS, TVM-430, KVB
Multiple working	Up to two units (3 on maintenance)
Track gauge	1,435 mm (4 ft 8+1⁄2 in) standard gauge

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. They were the first TGV trainsets to use bi-level passenger carriages with a seating capacity of 508 passengers, increasing capacity on busy high-speed lines. While the TGV Duplex started as a small component of the TGV fleet, it has become one of the system's workhorses.

A total of 160 Duplex trainsets were built: the original order of 89 first constructed in 1995, an addtional 19 Réseau Duplex trainsets created as an extension of the TGV POS project in 2006, and 52 second-generation Dasye trainsets were first delivered in 2007 with revised traction motors and safety systems.

The Duplex design was further refined into the third generation Euroduplex.