MTR CNR Changchun EMU

CNR Changchun EMU (C-Train)
C6554-07E / C6554-12E
港鐵市區綫中國製列車
港鐵南港島綫中國製列車
CNR Changchun EMU (C-Train) ; C6554-07E / C6554-12E; 港鐵市區綫中國製列車; 港鐵南港島綫中國製列車
	MTR C-train on the Kwun Tong line MTR S-train on the South Island line.
	C-Train interior S-Train interior
In service	2011 – present (Kwun Tong and Tseung Kwan O lines); 2016 – present (South Island line);
Manufacturer	CNR Changchun Railway Vehicles
Built at	Changchun, China
Family name	Urban lines: DKZ28; South Island line: DKZ50;
Constructed	2010–2014
Entered service	7 December 2011 (Kwun Tong and Tseung Kwan O lines); 28 December 2016 (South Island line);
Number built	22 trains with 8 carriages; 10 trains with 3 carriages;
Formation	South Island line: 3 cars per trainset; Kwun Tong line: 8 cars per trainset;
Capacity	2496 (8-car train); 938 (3-car train);
Operators	MTR
Depots	Kowloon Bay (Kwun Tong line); Wong Chuk Hang (South Island line);
Lines served	Kwun Tong line; Tseung Kwan O line; South Island line;
Specifications
Car body construction	Stainless steel
Car length	see the corresponding table
Width	Kwun Tong line: 3,120 mm (10 ft 2.83 in); South Island line: 3,120 mm (10 ft 2.83 in);
Height	3,698 mm (12 ft 1.591 in) (without pantograph or air conditioner); 3,727.5 mm (12 ft 2.752 in) (with pantograph and air conditioner);
Floor height	1,100 mm (3 ft 7.307 in)
Doors	10 per carriage (5 doors per side)
Maximum speed	90 km/h (56 mph) (design); 80 km/h (50 mph) (service);
Axle load	17.5 t (17.2 long tons; 19.3 short tons)
Traction system	2-level IGBT–VVVF Kwun Tong line: Mitsubishi Electric; South Island line: Alstom OPTONIX MG 1500;
Traction motors	3-phase AC induction motors Kwun Tong line: 24 × Mitsubishi Electric MB-5086-A2 155 kW (208 hp); South Island line: 12 × Alstom 4-ECA-2120 200 kW (270 hp);
Power output	Kwun Tong line: 3.72 MW (4,990 hp); South Island line: 2.4 MW (3,200 hp);
Acceleration	Kwun Tong line: 1–1.3 m/s2 (3.3–4.3 ft/s2); South Island line: 1.35 m/s2 (4.4 ft/s2);
Deceleration	Service: 0.8–1.35 m/s2 (2.6–4.4 ft/s2); Emergency: 1.4 m/s2 (4.6 ft/s2);
Electric system(s)	1,500 V DC overhead line
Current collector(s)	Pantograph
UIC classification	Kwun Tong line: 2′2′+Bo′Bo′+Bo′Bo′+Bo′Bo′+Bo′Bo′+Bo′Bo′+Bo′Bo′+2′2′; South Island line: Bo′Bo′+Bo′Bo′+Bo′Bo′;
Bogies	CW6000D (powered), CW6000 (trailer)
Braking system(s)	Knorr-Bremse electropneumatic and regenerative Kwun Tong line: KBGM-P; South Island line: EP2002;
Safety system(s)	Kwun Tong line: Alstom SACEM fixed-block ATP and ATS, with ATO; Future: Thales SelTrac moving-block CBTC with subsystems of ATC, ATO under GoA 3 (DTO), ATP, NetTrac ATS, CBI; South Island line: Alstom Urbalis 400 moving-block CBTC with subsystems of ATC, ATO under GoA 4 (UTO), ATP, Iconis ATS, Smartlock CBI;
Coupling system	BSI
Seating	Longitudinal
Track gauge	1,432 mm (4 ft 8+3⁄8 in) (Kwun Tong line to Yau Ma Tei); 1,435 mm (4 ft 8+1⁄2 in) (South Island line and Kwun Tong line extension);

The Changchun EMU or CNR Changchun EMU is an electric multiple unit train type of the Mass Transit Railway (MTR) system in Hong Kong. Designed and manufactured by Changchun Railway Vehicles, a member of CNR group (now merged with CSR to form CRRC), they were the first MTR heavy-rail stock to be manufactured in Mainland China, while past orders came from England, Japan, Europe or South Korea.

The trains come in two versions: the C-Train, a manned eight-car train which is used mainly on the Kwun Tong line; and the S-Train, a driverless three-car variant which operates on the South Island line since its opening in December 2016. Similar trains had been ordered for the Tuen Ma line, also known as TML C-Train, which entered service on the Ma On Shan line on 12 March 2017; however, these trains bear a resemblance to the older SP1900 EMUs.

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