MTR Rotem EMU

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K-Train Rotem EMU 港鐵市區綫韓製列車/ 港鐵東涌綫韓製列車
TCL-K Stock on the Tung Chung line
K-Train interior used on the Tseung Kwan O Line
In service	Tseung Kwan O line : 26 April 2002 (2002-04-26) – present   Tung Chung line : 12 June 2006 (2006-06-12) – present
Manufacturer	Rotem and Mitsubishi HI consortium
Order no.	Tseung Kwan O line : TKE-C651   Tung Chung line : TKE-C6522-04E
Built at	Changwon, South Korea[1]
Constructed	2002–2007
Entered service	Kwun Tong line : 26 April 2002 (2002-04-26) – 2010   Tseung Kwan O line : 2010; 14 years ago (2010)   Tung Chung line : 12 June 2006; 18 years ago (2006-06-12)
Number built	Tseung Kwan O line : 104 cars   Tung Chung line : 32 cars
Number in service	Tseung Kwan O line : 13 sets   Tung Chung line : 4 sets
Formation	8 cars per trainset
Operators	MTR
Depots	Tseung Kwan O line: Kowloon Bay depot (2002–2009) Tseung Kwan O depot   Tung Chung line: Siu Ho Wan depot
Lines served	Tseung Kwan O line Tung Chung line
Specifications
Car body construction	Stainless steel
Train length	Tseung Kwan O line : 183 m (600 ft 5 in)   Tung Chung line : 183.6 m (602 ft 4 in)
Car length	Tung Chung line end cars: 23,788 mm (78 ft 0.5 in)   Tseung Kwan O line end cars: 23,230 mm (76 ft 2.6 in) Intermediate cars: 22,000 mm (72 ft 2.1 in)
Width	3,118 mm (10 ft 2.8 in)
Height	3,698 mm (12 ft 1.6 in) (without pantograph or air conditioner)
Floor height	Tung Chung line : 1.25 m (49.2 in)   Tseung Kwan O line : 1.1 m (43.3 in)
Platform height	Tung Chung line : 1.25 m (49.2 in)   Tseung Kwan O line : 1.1 m (43.3 in)
Doors	5 sets of 51 inch wide Sliding Plug doors per side
Wheel diameter	860–785 mm (33.9–30.9 in) (new–worn)[2]
Wheelbase	2.5 m (8 ft 2 in)[2]
Maximum speed	Tseung Kwan O line: 90 km/h (56 mph) (design) 80 km/h (50 mph) (service)   Tung Chung line: 140 km/h (87 mph) (design) 135 km/h (84 mph) (service)
Weight	335t (per train set)
Traction system	Mitsubishi 2-level IGBT–VVVF   Tung Chung line model number: MAP-214-15VD143
Traction motors	24 × Mitsubishi asynchronous 3-phase AC   Tseung Kwan O line : MB-5086-A, 150 kW (201 hp)   Tung Chung line : MB-5116-A, 210 kW (281.6 hp)
Power output	Tseung Kwan O line : 3,600 kW (4,828 hp)   Tung Chung line : 5,760 kW (7,724 hp)
Acceleration	1 m/s2 (3.3 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 catenary
Current collector(s)	Pantograph
UIC classification	2′2′+Bo′Bo′+Bo′Bo′+Bo′Bo′+Bo′Bo′+Bo′Bo′+Bo′Bo′+2′2′
Bogies	Tseung Kwan O line : Adtranz MetroStar[3]   Tung Chung line : Bombardier FLEXX Metro 3000
Braking system(s)	Knorr-Bremse electropneumatic, regenerative and rheostatic
Safety system(s)	ATO and ATP
Seating	1,240 passengers(360 seats) (per train set)
Track gauge	1,432 mm (4 ft 8+3⁄8 in)
Notes/references
[4]

The Rotem EMU (also known as K-Train/K-Stock) is an electric multiple unit that operates on the MTR rapid transit railway system in Hong Kong. They were jointly built by a consortium consisting of Mitsubishi Heavy Industries of Japan and Hyundai Rotem of South Korea and come in two variants: TKE-C651 was delivered for the Tseung Kwan O line (used on the Kwun Tong line until 2009), and TKE-C6522-04E delivered in 2006 to 2007 for the Tung Chung line. In 2003 and 2004, the urban line trains ran on the Tsuen Wan line, Island line and Tseung Kwan O line.

The K-Stock trains are different from the R-stock trains built by Hyundai Rotem for the East Rail line extension, which were ordered by MTRC on 14 December 2012, as 37 nine-car sets and entered service on the current East Rail line in 2021.^[5]

The first of the 104 TKE-C651 cars entered service on 26 April 2002. Originally, these trains were designated to serve on the Tseung Kwan O line, but incompatible signalling apparatus installed in the new trains (running mode rather than the traditional automatic control system found in the M-stock) meant that all of the K-stock trains were initially unable to serve on the Tseung Kwan O line. As an alternative, all of those prototypes were ordered to serve on the Kwun Tong line. They have since been moved to the Tseung Kwan O line with the extension to LOHAS Park in 2009 which made the Kwun Tong line only use the M-Train. Since the location of motor and trailer cars are different from the older M-Train, it does not have any cars similar to D cars in M-Train.

The K-Stock trains came under criticism when they were first put into service due to delays and door safety issues.^[6] Along with other service reliability issues, there have been incidents where passengers have been injured by its doors, leading to the MTRCL "minimising the number of Korean trains for passenger service until a higher reliability of the systems concerned is achieved".^[6]

The configuration of a TKL K Stock train is (Eastbound) A-C-B-B-C-B-C-A (Westbound). Its maximum speed is 90 km/h (56 mph) but with service limits to 80 km/h (50 mph), with a maximum starting acceleration of 1.3 m/s² (4.27 ft/s²) (limited to 1 m/s² (3.28 ft/s²) in ATO), maximum service deceleration rate of 1.35 m/s² (4.43 ft/s²) and emergency deceleration of 1.4 m/s² (4.59 ft/s²). This modern train is equipped with a modern 2-level IGBT–VVVF inverter from Mitsubishi Electric.

The first TKE-C6522-04E train came into service for MTR on 12 June 2006 to 26 February 2007. Originally MTRC wanted to buy new additional trains for the Tung Chung line when the North Island line project began. MTR anticipated that the opening of the Disneyland Resort and Ngong Ping 360 would have an increase in passenger demand and therefore ordered four new trains for the Tung Chung line. The time frame from order to completion is short in comparison to other stock, however; the four new trains can only be made to be identical to existing Tseung Kwan O line K-Stock.

The configuration of a TCL K-Stock train is (Westbound) V-Z-X-Y-W-X-Z-V (Eastbound). Its maximum speed is 140 km/h (87 mph) but with service limits to 135 km/h (84 mph),^[4] with a maximum starting acceleration and service deceleration rate of 1 m/s² (3.28 ft/s²), and emergency deceleration of 1.4 m/s² (4.59 ft/s²). This advanced train is equipped with a modern 2-level IGBT–VVVF inverter (model number: MAP-214-15VD143) from Mitsubishi Electric.

A variant of the MTR K-Stock EMU was selected as Phase I rolling stock for the Delhi Metro in India. They have a very similar exterior appearance, as they were also designed by Mitsubishi/Rotem, but were built by BEML through a technology transfer arrangement.^[7]

The train on the Tseung Kwan O line, appears in the film, Blackhat.^[8]

• Media related to K-Stocks (MTR) at Wikimedia Commons
• [1] spec sheet