Alstom Metropolis C830

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Alstom Metropolis C830
2 C830 in KCD.JPG
C830Interior.JPG
Interior of the Alstom Metropolis C830 on the Circle line
In service28 May 2009; 12 years ago (2009-05-28) – present
ManufacturerAlstom
Built atValenciennes, France
Family nameMetropolis
Constructed2006 – 2008
Entered service28 May 2009; 12 years ago (2009-05-28)
Number built120 vehicles (40 trainsets)
Number in service120 vehicles (40 trainsets)
Formation3 per trainset
Mc1-T-Mc2
Fleet numbers801 – 840
Capacity931 passengers
148 seats
Operator(s)SMRT Trains Ltd (SMRT Corporation)
Depot(s)Kim Chuan
Line(s) served CCL  Circle line
Specifications
Car body constructionWelded aluminium
Car length23.65 m (77 ft 7+1⁄8 in) (Mc)
22.8 m (74 ft 9+5⁄8 in) (T)
Width3.21 m (10 ft 6+3⁄8 in)
Height3.68 m (12 ft 7⁄8 in)
Floor height1,110 mm (43+3⁄4 in)
Doors1,450 mm (57+1⁄8 in), 8 per car, 4 per side
Articulated sections2
Maximum speed90 km/h (56 mph) (design)
78 km/h (48 mph) (service)
Weight120 t (120 long tons; 130 short tons) (unladen)
199 t (196 long tons; 219 short tons) (fully laden)
Traction systemIGBT–VVVF (Alstom ONIX)
Traction motors11 × 150 kW (200 hp) 3-phase AC induction motor (Alstom ONIX)
Power output1.65 MW (2,210 hp)
Acceleration1.1 m/s2 (3.6 ft/s2)
Deceleration1.3 m/s2 (4.3 ft/s2) (Emergency)
Electric system(s)750 V DC third rail
Current collection methodCollector shoe
UIC classificationBo'Bo' + 2'2' + Bo'Bo'
Braking system(s)Regenerative braking, air brakes
Safety system(s)Alstom URBALIS 300 moving block CBTC ATC under ATO GoA 4 (UTO), with subsystems of ATP, Iconis ATS and Smartlock CBI[1][2]
Coupling systemScharfenberg
Track gauge1,435 mm (4 ft 8+1⁄2 in) standard gauge

The Alstom Metropolis C830 is the first generation of communication-based train control (CBTC) electric multiple unit rolling stock in operation on the Circle line of Singapore's Mass Rapid Transit (MRT) system since 2009. Alstom was contracted in 2000 (as part of turnkey contract Contract C830) by the Land Transport Authority (LTA) in Singapore to supply the trains for the Circle line.

Overview[]

Despite being similar to the fully underground North East line, the decision was made to power the three-car trains along the Circle line by third rail instead of overhead catenary. 40 trainsets of three cars each were purchased for the Circle line.

Although these cars were similar to their counterparts running on the North East line, they do not feature LCD Displays in each car due to lack of demand along Circle line.[3] However, the ceiling-mounted LED dot matrix displays which display information were retained in the design.

In addition, the front of the train features an extra window cut into the emergency exit door unlike the C751A trains, giving passengers a view of the tunnel.[4]

Driverless operation[]

The C830 is fully driverless under normal circumstances, using CBTC which does not require traditional "fixed-block track circuits" for determining train position. Instead, they rely on "continuous two-way digital communication" between each controlled train and a wayside control center, which may control an area of a railway line, a complete line, or a group of lines. Recent studies consistently show that CBTC systems reduce life-cycle costs for the overall rail property and enhance operational flexibility and control.[5]

Train formation[]

The configuration of a C830 in revenue service is Mc1-T-Mc2

Cars of C830
Car type Control cab Motor Collector shoe Car length Wheelchair bay
mm ft in
Mc ✓ ✓ ✓ 23,650 77 ft 7.1 in ✗
T ✗ ✗ ✓ 22,800 74 ft 9.6 in ✓

The car numbers of the trains range from 801x to 840x, where x depends on the carriage type. Individual cars are assigned a four-digit serial number by the rail operator SMRT Trains. A complete three-car trainset consists of one trailer (Tp) and two driving motor cars (Mc1 and Mc2) permanently coupled together. For example, set 801 consists of carriages 8011, 8012 and 8013.

  • The first digit is always an 8.
  • The second and third digits identify the set number.
  • The fourth digit identifies the car number, where the first car has a 1, the second has a 2 and the third has a 3.
  • Alstom built sets 801-840.

See also[]

References[]

  1. ^ "Singapore Northeast Line: will soon be the largest, fully automatic metro system in the world" (PDF). pp. 4 to 8. Archived (PDF) from the original on 16 June 2020. Retrieved 16 June 2020.
  2. ^ "URBALIS Evolution: Controlling the Performance" (PDF). p. 4. Archived (PDF) from the original on 16 June 2020. Retrieved 16 June 2020.
  3. ^ "Alstom Metropolis C830 | Land Transport Guru". Land Transport Guru. 2016-02-29. Retrieved 2017-08-13.
  4. ^ "Features | Circle Line | Projects | Public Transport | Land Transport Authority". www.lta.gov.sg. Retrieved 2017-08-13.
  5. ^ "Urbalis control system". Archived from the original on 2014-08-05.

External links[]

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