MTR Adtranz–CAF EMU

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Adtranz-CAF EMU (CAF-Train or A-Train) 港鐵機場鐵路列車/港鐵機場快線
Tung Chung line train Airport Express train Interior of an A-Train used on the Tung Chung Line Interior of the Airport Express
In service	21 June 1998-present
Manufacturer	AdTranz and Construcciones y Auxiliar de Ferrocarriles (CAF)
Built at	Beasain, Gipuzkoa, Basque Country, Spain
Family name	AdTranz (now Bombardier Movia)
Constructed	1996-1997
Entered service	1998
Refurbished	2008, 2020-present (AEL)
Number built	96 Vehicles (TCL) 88 Vehicles (AEL)
Successor	LAR Q-train
Formation	8 cars per trainset (originally 7 cars)
Fleet numbers	V601~V801 - V612~V812 (Tung Chung line), E101~K401 - E111~K411 (Airport Express) Exxx, Fxxx, Gxxx, Hxxx, Jxxx, Kxxx, Vxxx, Wxxx, Xxxx, Yxxx, Zxxx
Operator(s)	MTR
Depot(s)	Siu Ho Wan
Line(s) served	Tung Chung line      Airport Express
Specifications
Car body construction	Aluminum Fiberglass (Header)
Car length	24,600 mm (80 ft 8.5 in) (E, K, V cars) 22,550 mm (73 ft 11.8 in) (All other cars)
Width	3,096 mm (10 ft 1.9 in)
Height	3,700 mm (12 ft 1.7 in) (without pantograph) (air conditioners flush with roof)
Platform height	1,250 mm (4 ft 1.2 in)
Doors	5 per side (TCL stock and AEL K car) 2 per side (AEL stock)
Maximum speed	140 km/h (87 mph) (design) 135 km/h (84 mph) (service)
Traction system	3-level GTO-VVVF (AEG GEATRAC DASU6.1)
Traction motors	20 or 24 × 265 kW (355 hp) 3-phase AC induction motor (AEG BASu 5551/4)
Power output	5.3 MW (7,100 hp) or 6.36 MW (8,530 hp)
Acceleration	1 m/s2 (3.3 ft/s2)
Deceleration	1.1 m/s2 (3.6 ft/s2) (service) 1.35 m/s2 (4.4 ft/s2) (emergency)
Electric system(s)	1,500 V DC overhead lines
Current collection method	Pantograph
Braking system(s)	Pneumatic and Regenerative
Safety system(s)	ATO (SACEM) and ATP
Coupling system	BSI (Multi-Function Couplers) Semi-permanent coupler
Track gauge	1,432 mm (4 ft 8+3⁄8 in)

The Adtranz-CAF EMU (also known as CAF-Train or A-Train) is an Electric Multiple Unit (EMU) train that operates on the MTR rapid transit railway system in Hong Kong. There are two variants, one used on the conventional Tung Chung line, and a more luxurious version used on the Airport Express. The vehicle interiors were designed for MTR by Jones Garrard, while the vehicle exterior and driver's cab interior were designed in the UK by Design Triangle^[1] (the first two modifications of these were designed in Spain by Diara Design). These two variations are built jointly by Adtranz (acquired by Bombardier Transportation in 2001) and Construcciones y Auxiliar de Ferrocarriles (CAF)^[2] and manufactured in Spain in 1996-7.

All 23 train sets will be retired and replaced around 2029 by a series of new trains to be manufactured by CRRC Qingdao Sifang.^[3] Known as the LAR Q-Train, they will be similar to the Q-Trains currently under construction, which will eventually run on the Island line, Tsuen Wan line, Tseung Kwan O line and Kwun Tong line starting in 2023.

Tung Chung line stock[]

Trains of the Tung Chung line were made up of 7 cars up until 2003, and were increased to 8 cars with W7XX car in 2003 when the West Rail line and Nam Cheong station was opened. The total number of cars ordered was 96.

The configuration of a TCL CAF-Stock train is (Westbound) V-W-X-Y-W-X-Z-V (Eastbound). The maximum train speed is 140 km/h (87 mph) but with the max speed 135 km/h (84 mph) on service currently, maximum acceleration is 1 m/s² (3.3 ft/s²) (3.6 km/(h⋅s) or 2.24 mph/s). Maximum service brake rate is 1.1 m/s² (3.6 ft/s²) (3.96 km/(h⋅s) or 2.461 mph/s), and emergency brake deceleration is 1.35 m/s² (4.4 ft/s²) (4.86 km/(h⋅s) or 3.020 mph/s). Traction equipment for TCL trains was supplied by AEG, using their GEATRAC DASU6.1 3-level VVVF inverter based on GTO thyristor technology.

Airport Express stock[]

Trains of Airport Express (AEL) were made up of 7 cars up until 2005. The 88 cars were built and assembled by CAF in Spain while Adtranz contributed control and traction equipment. To cope with the extra traffic demand derived from the opening of AsiaWorld–Expo station, an additional 'F2XX' car was added to each train to form a total of 8 cars. However, the 'K4XX' cars function as baggage container cars for bulky baggage checked in via the in-town check-in services at Hong Kong and Kowloon stations. If future demand rises, trains on the AEL are capable of running with 10 cars.^[4]

Configuration of an AEL A-train is (Westbound) E100-F100-G100-H200-F200-G200-J400-K400 (Eastbound). Except for 'K4XX' cars that have 5 doors on each side, all other cars in AEL have 2 doors on each side and 1 wheelchair space. Each passenger car is mounted with 2 LCD monitors at each end for broadcasting entertainment or tourist television programmes and train announcements, such as next-station broadcasts. Maximum train speed is 140 km/h (87 mph), but with the max speed 135 km/h (84 mph) on service currently, maximum acceleration is 1 m/s² (3.3 ft/s²) (3.6 km/(h⋅s) or 2.24 mph/s), maximum service deceleration is 1.1 m/s² (3.61 ft/s²) (3.96 km/(h⋅s) or 2.46 mph/s)), and emergency brake can deliver deceleration of 1.35 m/s² (4.43 ft/s²) (4.86 km/(h⋅s) or 3.02 mph/s)).^[5] Traction equipment for AEL trains was supplied by AEG, using their GEATRAC DASU6.1 3-level VVVF inverter based on GTO thyristor technology.

References[]

Wikimedia Commons has media related to A-Stocks (MTR).