Alstom Metropolis C751C

Alstom Metropolis C751C
Interior of a C751C train
Stock type	Electric multiple unit
In service	1 October 2015 (2015-10-01) – Present
Manufacturers	Shanghai Alstom Transport (Alstom and Shanghai Electric)
Built at	Shanghai, China
Family name	Metropolis
Constructed	2014 – 2016
Entered service	1 October 2015 (2015-10-01)
Number built	108 Vehicles (18 Sets)
Number in service	108 Vehicles (18 Sets)
Formation	6 per trainset DT–Mp–Mi+Mi–Mp–DT
Fleet numbers	7051/7052 – 7085/7086
Capacity	1920 passengers (320 per car)
Operator	SBS Transit
Depot	Sengkang
Line served	North East Line
Specifications
Car body construction	Welded Aluminium
Train length	138.5 m (454 ft 4+3⁄4 in)
Car length	23.65 m (77 ft 7+1⁄8 in) (DT) 22.8 m (74 ft 9+5⁄8 in) (Mp/Mi)
Width	3.2 m (10 ft 6 in)
Height	3.7 m (12 ft 1+5⁄8 in)
Floor height	1,100 mm (43+1⁄4 in)
Doors	1,450 mm (57+1⁄8 in), 8 per car, 4 per side
Maximum speed	100 km/h (62 mph) (design) 90 km/h (56 mph) (service)
Traction system	Alstom OPTONIX IGBT–VVVF
Traction motors	16 × 150 kW (200 hp) 3-phase AC induction motor
Power output	2.4 MW (3,200 hp)
Electric systems	1,500 V DC overhead catenary
Current collection	Pantograph
UIC classification	2′2′+Bo′Bo′+Bo′Bo′+Bo′Bo′+Bo′Bo′+2′2′
Braking systems	Regenerative and pneumatic
Safety systems	Alstom URBALIS 300 moving block CBTC ATC under ATO GoA 4 (UTO), with subsystems of ATP, Iconis ATS and Smartlock CBI
Coupling system	Scharfenberg
Track gauge	1,435 mm (4 ft 8+1⁄2 in) standard gauge

The Alstom Metropolis C751C is the second generation of communication-based train control (CBTC) electric multiple unit rolling stock in operation on the North East Line of Singapore's Mass Rapid Transit (MRT) system. Eighteen 6-car train sets were manufactured by Shanghai Alstom Transport Co Ltd (joint venture of Alstom and Shanghai Electric), Deliveries began in July 2014, and all trainsets were delivered by 2015.

Tender

The tender for trains under the contract 751C was opened together with another contract C830C for an additional 24 Circle Line trains which was closed on 18 July 2011 with 4 bids. The Land Transport Authority has shortlisted all of them and the tender results was published on 1 February 2012.

S/N	Name of Tenderer	Amount (S$)
1	Alstom Transport S.A. / Alstom Transport (S) Pte Ltd Consortium	234,900,000.00 (Base Tender 2 - Offered in mixed currencies, and hence the differences of amount shown in the tender document.)
2	Hyundai Rotem Company	284,954,400.00 (Base Tender 2)
3	Construcciones y Auxiliar de Ferrocarriles, S.A.	234,443,494.80 (Base Tender 2)
4	CRRC Zhuzhou Locomotive (formerly CSR Zhuzhou Electric Locomotive Co., Ltd.) / Siemens Pte Ltd, Singapore Consortium	245,076,923.08 (Base Tender 2)

Driverless operation

The C751C is fully driverless under normal circumstances, using CBTC which do not require traditional "fixed-block track circuits" for determining train position. Instead, they rely on "continuous two-way digital communication" between each controlled train and a wayside control center, which may control an area of a railroad line, a complete line, or a group of lines. Recent studies consistently show that CBTC systems reduce life-cycle costs for the overall rail property and enhance operational flexibility and control.