Alstom Metropolis & Shanghai Electric C751C

Alstom Metropolis & Shanghai Electric C751C
In service	1 October 2015 - present
Manufacturer	Shanghai Alstom Transport (Alstom and Shanghai Electric)[1]
Built at	Shanghai, China
Family name	Metropolis
Constructed	2014–2016
Entered service	2015
Number under construction	48 Vehicles (8 Trainsets)
Number built	108 Vehicles (18 Trainsets)
Number in service	60 Vehicles (10 Trainsets)
Formation	6 per trainset DT-Mp-Mi-Mi-Mp-DT
Fleet numbers	7051 ~ 7086
Capacity	1920 passengers (320 per car)
Operator(s)	SBS Transit (ComfortDelGro Corporation)
Depot(s)	Sengkang
Line(s) served	North East Line
Specifications
Car body construction	Welded Aluminium
Car length	23.65 m (77 ft 7 ^1⁄8 in) (Tc) 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)
Platform height	(?)
Doors	1,450 mm (57 ^1⁄8 in), 8 per car
Maximum speed	100 km/h (62 mph) (design) 90 km/h (56 mph) (service)
Traction system	IGBT–VVVF (Shanghai Alstom Electrical Equipment OPTONIX)[2]
Electric system(s)	1500 V DC overhead catenary
Current collection method	Pantograph
Braking system(s)	Regenerative Braking, Air Brakes
Safety system(s)	Alstom URBALIS 300 CBTC ATC with subsystems of ATO GOA 4 (UTO), ATP, Iconis ATS and Smartlock CBI
Track gauge	1,435 mm (4 ft 8 ^1⁄2 in) standard gauge

The Shanghai Alstom Metropolis C751C together with the Alstom Metropolis C830C are the third generation of communication-based train control (CBTC) rolling stock to be used in Singapore’s Mass Rapid Transit (MRT) lines. 18 trainsets of 6 cars were manufactured by Shanghai Alstom Transport Co Ltd (joint venture of Alstom and Shanghai Electric),^[1] Deliveries began in July 2014 and is expected to continue through 2015.^[3][4][5]

As of 1 October 2015, the first trainset (7055/7056) has been deployed for service.

History

The contract, worth S$234.9 million, was awarded to Alstom (as part of turnkey contract C751C) by the Land Transport Authority (LTA) in Singapore to supply additional trains for the North East MRT Line. Alstom won over Hyundai Rotem, Kawasaki Heavy Industries, Construcciones Y Auxiliar De Ferrocarriles and CSR Zhuzhou to secure the order.

Design

Externally, the C751C is very similar to the older Alstom Metropolis C751A in terms of shape, color and appearance, but has a window on the detrainment doors located at the ends of the train so that passengers can see the track ahead, this is not included in the older C751A trains. The interior design is similar to the C751A but have redesigned gangway connections which is borrowed from the new C830C. The seats are similar to the newer Bombardier MOVIA C951 and C801A, being of a purplish tint. Priority seats are distinguishable by their red coloration. Its handgrips are now purple, a departure from the standard white most other rolling stock. The C751C has a dynamic route-map system, similar to the C830C and C951. It also has a louder and higher-pitched propulsion system, which bears an uncanny resemblance to the propulsion sound on the Kawasaki Heavy Industries C151. It is equipped with a new type of current collector.

Features

It features a Visual Passenger Information System, letting commuters know what the current and next station is, as well as green blinking lights which indicate the side of which the train doors will open when the train reaches the station. At most stations on the North East Line, the train doors will open on the right side, but at terminus stations like Punggol and HarbourFront, doors may open on the left.

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.^[6]

Train Formation

The configuration of a C751C in revenue service is DT-Mp-Mi-Mi-Mp-DT

Cars of C751C
car type	Driver Cab	Motor	Pantograph	car length		Wheelchair Space
				mm	ft in
DT	✓	✗	✗	23,650	77 ft 7.1 in
Mi	✗	✓	✗	22,800	74 ft 9.6 in
Mp	✗	✓	✓	22,800	74 ft 9.6 in

The car numbers of the trains range from 7x051 to 7x086, where x depends on the carriage type. Individual cars are assigned a five-digit serial number by the rail operator SBS Transit. A complete six-car trainset consists of an identical twin set of one Driving trailer(DT) and two motor cars(Mi & Mp) permanently coupled together. For example, set 051/052 consists of carriages 71051, 72051, 73051, 73052, 72052 and 71052.

• The first digit is always a 7.
• The second digit identifies the car number, where the first car has a 1, the second has a 2 & the third has a 3.
• The third digit is always a 0.
• The fourth digit and fifth digit are the train identification numbers. A full length train of 6 cars have 2 different identification numbers, one for the first 3 cars, and the same number plus 1, for the other three.
  • Alstom Shanghai Electric built sets 051-086.

See also

• Alstom Metropolis

References

1. "Driverless trains delivered to Singapore". Railway Gazette. 23 July 2014. Retrieved 1 August 2015.
2. "Alstom to supply 34 Metropolis trains and signaling upgrade to Singapore metro". French Chamber Singapore. Retrieved 9 August 2015.
3. "LTA and SMRT Award Contracts for New Trains and Re-Signalling Project". Land Transport Authority. 1 February 2012. Retrieved 16 November 2013.
4. "Alstom to supply 34 Metropolis trains and signaling upgrade to Singapore metro". 3 February 2012. Retrieved 16 November 2013.
5. Briginshaw, David (23 July 2014). "First North East Line trains arrive in Singapore". International Railway Journal. Retrieved 1 August 2015.
6. "Urbalis control system".