Alstom Metropolis C830C facts for kids

Quick facts for kids Alstom Metropolis C830C
Interior of C830C.
In service	26 June 2015 - Present
Manufacturer	Shanghai Alstom Transport (Alstom and Shanghai Electric)
Built at	Shanghai, China
Family name	Metropolis
Constructed	2014–2015
Number built	72 Vehicles (24 Trainsets)
Number in service	72 Vehicles (24 Trainsets)
Formation	3 per trainset Mc1– T–Mc2
Fleet numbers	841 ~ 864
Capacity	931 passengers
Operator(s)	SMRT Trains (SMRT Corporation)
Depot(s)	Kim Chuan
Line(s) served	CCL  Circle Line
Specifications
Car body construction	Welded Aluminium
Car length	23.65 m (77 ft 7+1⁄8 in) (Mc) 22.8 m (74 ft 9+5⁄8 in) (T)
Width	3.2 m (10 ft 6 in)
Height	3.7 m (12 ft 1+5⁄8 in)
Doors	1,450 mm (57+1⁄16 in), 8 per car
Maximum speed	90 km/h (56 mph) (design) 78 km/h (48 mph) (service)
Traction system	IGBT–VVVF (Shanghai Alstom Electrical Equipment OPTONIX)
Power output	1.66 MW (2,230 hp)
Acceleration	1.1 m/s2 (3.6 ft/s2)
Deceleration	1.3 m/s2 (4.3 ft/s2) (Emergency)
Electric system(s)	750 V DC third rail
Current collection method	Collector shoe
Braking system(s)	Regenerative Braking, Air Brakes
Safety system(s)	Alstom URBALIS 300 Moving Block 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 Alstom Metropolis C830C is a modern train used on Singapore's MRT lines. It's part of the third group of trains that use a special system called communications-based train control (CBTC). There are 24 of these trains, and each train has 3 cars. They were built by Shanghai Alstom Transport Co Ltd, a company that is a partnership between Alstom and Shanghai Electric. These trains started arriving in Singapore in June 2014.

How the Trains Were Chosen

The process to choose these trains was called a "tender." This is like a competition where different companies offer to build something. The tender for the C830C trains was announced at the same time as another one for trains for the North East MRT Line.

Five companies submitted their offers by July 18, 2011. The Land Transport Authority (LTA), which manages Singapore's transport, looked at all the offers. They announced the winning company on February 1, 2012.

Train Design and Features

The outside of the C830C train looks very similar to an older train model, the C830. However, there are a few small differences. For example, the SMRT logo on the C830C is bigger.

Inside the train, you'll notice some changes:

• Seats: Special reserved seats are colored red so they are easy to spot. Other seats in the end cars (called driving motor cars) are Navy blue and yellow. The seats in the middle car are khaki.
• Sound: The C830C's system for moving is a bit louder than the C830's. It sounds like the system used in the Amsterdam Metro M5 Series trains.
• Doors: The inside part of the doors is a bluish-grey color.
• Information System: There's a new screen above the doors called a Visual Passenger Information System. It's similar to the one found on the C951 trains.
• Gangway: The way the train cars connect (the gangway) has a new design, similar to the C751C trains.

Driverless Operation

The C830C trains run without a driver! They use a smart system called Communications-based train control (CBTC). This system doesn't need old-fashioned "fixed-block track circuits" to know where the train is.

Instead, it uses constant two-way digital communication. This means the train and a control center are always talking to each other. The control center can manage a part of the line, a whole line, or even several lines. Using CBTC systems helps reduce costs and makes it easier to control the train system.

How the Train Cars Connect

A full C830C train has three cars linked together. This setup is called Mc1-T-Mc2.

The train numbers for these sets go from 841 to 864. Each car within a train set has its own 4-digit serial number. For example, train set 864 includes cars 8641, 8642, and 8643.

Images for kids

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  The dynamic route map display (DRMD) as used on the C830C