Alstom Metropolis C830
| Industry | Rail transport, manufacturing |
|---|---|
| Founded | 1928 |
| Headquarters | Saint-Ouen-sur-Seine , France |
| Products | Rolling stock, including the Metropolis C830 EMU |
| Website | www |
{{Infobox train
| name =
| image = 2 C830 in KCD.JPG
| caption = C830 trainsets at Kim Chuan Depot
| interiorimage = SMRT C830 interior.jpg
| interiorcaption = Inside view of the Alstom Metropolis C830 on the Circle line.
| stocktype = Electric multiple unit
| service = – present
| manufacturer = Alstom
| factory = Valenciennes, France
| family = Metropolis
| yearconstruction = 2006 – 2008
| yearservice =
| numberbuilt = 120 Vehicles (40 Sets)
| numberservice = 120 Vehicles (40 Sets)
| formation = 3 cars per trainset
Mc1–T–Mc2
| fleetnumbers = 801 – 840
| capacity = 931 passengers (148 seats)
| operator = SMRT Trains (SMRT Corporation)
| depots = Kim Chuan
| lines = Circle line
| carbody = Welded aluminium
| trainlength =
| carlength =
| width =
| height =
| floorheight =
| doors = , 8 per car, 4 per side
| wheeldiameter = [1]
| wheelbase = [1]
| maxspeed =
| weight =
| axleload = [1]
| traction = Alstom ONIX IGBT–VVVF
| traction motors = 8 × Alstom 4LCA 2138 asynchronous 3-phase ACCite error: Invalid <ref> tag; refs with no name must have content
| poweroutput =
| acceleration =
| deceleration = (Emergency)
| electricsystem = conductor shoe
| uicclass = Bo′Bo′+2′2′+Bo′Bo′
| bogies = Alstom B25[1]
| brakes = Regenerative and pneumatic
| safety = Alstom URBALIS 300 CBTC ATC under ATO GoA 4 (UTO), with ATP, Iconis ATS and Smartlock CBICite error: Invalid <ref> tag; refs with no name must have contentCite error: Invalid <ref> tag; refs with no name must have content
|}
The Alstom Metropolis C830 represents the initial generation of communication-based train control (CBTC) electric multiple units that have been operating on Singapore’s Circle MRT line since 2009. In the year 2000, Alstom was awarded a comprehensive contract by the Land Transport Authority (LTA) to provide these trains, marking a significant advancement in Singapore’s Mass Rapid Transit infrastructure through cutting-edge metro technology.
Operational history and overview
While sharing similarities with the entirely underground North East MRT line, the three-car configurations running on the Circle MRT line utilize a third rail power supply rather than an overhead catenary system. A total of forty trainsets were commissioned specifically for the Circle line. Alstom secured this contract on 28 December 2000, prevailing against seven other shortlisted competitors.
Distinctively, the train's front end incorporates an additional window within the emergency exit door, setting it apart from the C751A models by offering passengers a direct view of the tunnel ahead.
Interior
Inside, the C830 trains are outfitted with walls and doors in tones of white and grey, complemented by seating arranged in purple, blue, and green hues that differ depending on the car.
Driverless operation
The C830 operates entirely without drivers through Communications-Based Train Control (CBTC), removing reliance on conventional fixed-block track circuits. Instead, it depends on continuous digital two-way communication between each train and a centralized control facility responsible for managing designated railway segments or entire routes. This CBTC technology has demonstrated benefits including lower life-cycle expenses and improved operational adaptability and oversight.
Train Composition
The operational arrangement for a C830 trainset follows the sequence Mc1–T–Mc2.
| Car Category | Number | Driver's Cabin | Traction Motor | Collector Shoe | Car Length | Wheelchair Accessible Area | |
|---|---|---|---|---|---|---|---|
| meters | feet & inches | ||||||
| Mc | 2 | ✓ | ✓ | ✓ | 23.65 | 77 ft 7.1 in | ✗ |
| T | 1 | ✗ | ✗ | ✓ | 22.8 | 74 ft 9.6 in | ✓ |
Train identifiers range between 801x and 840x, with each car receiving a unique four-digit number assigned by SMRT Trains. Every three-car formation consists of one trailer (T) flanked by two driving motor cars (Mc) that are permanently connected. For instance, set 801 is composed of cars numbered 8011, 8012, and 8013.
- The initial digit is fixed as 8.
- The middle two digits correspond to the set number.
- The final digit specifies the individual car: 1 for the first car, 2 for the second, and 3 for the third.
- All trainsets from 801 through 840 were manufactured by Alstom.