MTR A-Stock EMU
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| A-Stock | |
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 Airport Express Line train |
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 Interior of a Tung Chung Line A Stock. |
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| Number built | 96 (TCL), 88 (AEL) |
| Operator | MTR |
| Lines served | Tung Chung Line Airport Express |
| Specifications | |
| Maximum speed | 135 km/h |
| Acceleration | 1 m/s² |
| Deceleration | Service 1.1 m/s², emergency 1.35 m/s². |
| Gauge | 1,432 mm (4 ft 8⅜ in) |
| Voltage | 1500 V DC overhead |
| Safety systems | ATC and ATP |
The A-Stock is an Electric Multiple Unit 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. These two variations are built jointly by Adtranz (acquired by Bombardier Transportation in 2001) and Construcciones y Auxiliar de Ferrocarriles and manufactured in Spain.
[edit] Tung Chung stock
Trains of the Tung Chung Line are made up of 7 cars up until 2003, and was increased to 8 cars with W car in 2003 when the West Rail Line was opened. TCL trains are capable of running with 8 cars in total. The total amount of cars ordered was 96.
| Cars of TCL A Stock | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| car type | driver cab | motor | pantograph | auto- coupler |
length (mm) |
seat | standing capacity |
wheelchair space |
amount |
| V car | ✓ | ✓ | ✓ | ✗ | 24600 | 42 | 252 | 2 | 24 |
| W car | ✗ | ✓ | ✗ | ✗ | 22500 | 48 | 252 | ✗ | 24 |
| X car (trailer) | ✗ | ✗ | ✗ | ✓ | 22500 | 48 | 252 | ✗ | 24 |
| Y car | ✗ | ✓ | ✓ | ✗ | 22500 | 48 | 252 | ✗ | 12 |
| Z car | ✗ | ✓ | ✗ | ✓ | 22500 | 48 | 252 | ✗ | 12 |
The configuration of a TCL A Stock train is (Up track direction) V-W-X-Y-W-X-Z-V. Maximum train speed of is 135 km/h but with the Max. speed 130km/h on service currently, maximum acceleration is 1 m/s², maximum service brake rate is 1.1 m/s², emergency brake has deceleration of 1.35 m/s². Traction system of TCL trains is VVVF Inverter based on gate turn off thyristor (GTO thyristor) technology.
[edit] Airport Express stock
Trains of Airport Express (AEL) are made up of 7 cars up until 2003 although they can be run with 10 cars per train. The 88 cars are Bombardier Transportation's Movia 456 Metro. To cope with extra traffic demand derived from the opening of AsiaWorld-Expo station, one more 'F' car had been added to each train to form a total of 8 cars.
| Cars of AEL train | ||||||||
|---|---|---|---|---|---|---|---|---|
| car type | driver cab | motor | pantograph | auto- coupler |
length (mm) |
seat | standing capacity |
amount |
| E car | ✓ | ✓ | ✓ | ✗ | 24600 | 60 | 84 | 11 |
| F car | ✗ | ✓ | ✗ | ✗ | 22500 | 64 | 84 | 22 |
| G car (trailer) | ✗ | ✗ | ✗ | ✓ | 22500 | 64 | 84 | 22 |
| H car | ✗ | ✓ | ✓ | ✓ | 22500 | 64 | 84 | 11 |
| J car | ✗ | ✓ | ✗ | ✓ | 22500 | 64 | 84 | 11 |
| K car (van) | ✓ | ✓ | ✓ | ✗ | 24600 | 13 luggage containers | 11 | |
Configuration of an AEL train is E-F-G-H-F-G-J-K. Except for K cars that have 5 doors on each side, all other cars in AEL have 2 doors on each side and 1 wheelchair space. Each seat is fitted with an on-board info-entertainment screen.
Maximum speed of AEL trains is 135 km/h, maximum acceleration is 1 m/s², maximum service deceleration is 1.1 m/s², emergency brake can deliver deceleration of 1.35 m/s². Traction of AEL trains are VVVF Inverter based on GTO Thyrsitor technology.
[edit] References
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