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Alstom Metropolis C851E (North East Line)

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Alstom Metropolis C851E (North East Line)
Stock typeElectric multiple unit
In service28 July 2023; 3 years ago (2023-07-28) – Present
ManufacturerAlstom
Built atBarcelona, Spain
Family nameMetropolis
Constructed2020 – 2023
Entered service28 July 2023; 3 years ago (2023-07-28)[1]
Number built36 Vehicles (6 Sets)
Number in service36 Vehicles (6 Sets)
Formation6 cars per trainset (DT–Mp–Mi+Mi–Mp–DT)
Fleet numbers7087/7088 – 7097/7098
Capacity1920 passengers (298 seats)
OperatorSBS Transit Ltd (ComfortDelGro Corporation)
DepotSengkang
Line served North East Line
Specifications
Car body constructionWelded aluminium
Train length138.5 m (454 ft 4+3⁄4 in)
Car length
- 23.65 m (77 ft 7+1⁄8 in) (DT)

- 22.8 m (74 ft 9+5⁄8 in) (Mp/Mi)

Width3.2 m (10 ft 6 in)
Height3.7 m (12 ft 1+5⁄8 in)
Doors1,450 mm (57+1⁄8 in), 8 per car, 4 per side
Maximum speed
- 100 km/h (62 mph) (design)

- 90 km/h (56 mph) (service)

Traction systemAlstom OPTONIX IGBT–VVVF[2]
Acceleration0.95 m/s2 (3.1 ft/s2)
Deceleration1.3 m/s2 (4.3 ft/s2) (Emergency)
Electric systems1,500 V DC overhead catenary
Current collectionPantograph
UIC classification2′2′+Bo′Bo′+Bo′Bo′+Bo′Bo′+Bo′Bo′+2′2′
Braking systemsRegenerative and pneumatic
Safety systemsAlstom URBALIS 300 moving block CBTC ATC under ATO GoA 4 (UTO), with subsystems of ATP, Iconis ATS and Smartlock CBI[3][4]
Coupling systemScharfenberg
Track gauge1,435 mm (4 ft 8+1⁄2 in) standard gauge

The Alstom Metropolis C851E (North East Line) is the third generation electric multiple unit rolling stock introduced on the North East Line of Singapore's Mass Rapid Transit (MRT) system, manufactured by Alstom under Contract 851E. It consists of six six-car trains built alongside 23 three-car trains for the Circle Line. The trains were manufactured and assembled in Alstom's manufacturing facility in Barcelona, Spain and progressively shipped to Singapore from 2021.[5] The contract, valued at around S$250 million, was awarded by the Land Transport Authority (LTA) during a ceremony held at Sengkang Depot.[6] Alstom was the sole bidder for this contract.[7]

Tender

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The tender for trains under the contract C851E was closed on 2 October 2017 with Alstom being the sole bidder for this contract.[7] The LTA shortlisted and published the tender results.

S/N Name of tenderer Amount (S$) Offer 1[8] Amount (S$) Offer 2[8] Remarks
1 Alstom Transport S.A. / Alstom Transport (S) Pte Ltd Consortium 279,782,872.00 293,489,289.00 Offer 1 in mixed currencies; S$410,100,934.00 (Alternative in mixed currencies)

Contract 851E was awarded to the sole bidder, Alstom, at a cost of S$250 million on 30 April 2018.[7][6]

Overview

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The 6 trains supplement the existing C751A and C751C trains on the North East Line for the 1.7-kilometre (1.1 mi) long extension from Punggol to Punggol Coast which opened on 10 December 2024. The first train set arrived in Singapore on 4 April 2021.[9] On 6 June 2023, a C851E set was spotted testing at Potong Pasir MRT station for the first time.[10] The first of these trains entered passenger service on 28 July 2023, and the last set entered service on 28 August 2023, increasing the NEL fleet from 43 to 49 trains in a span of just one month.[1]

Features

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To enable a more robust maintenance regime, all the new trains are equipped with condition monitoring systems to gather data from equipment on the trains. This enables continuous monitoring of the health of the equipment and allows the operator to carry out predictive maintenance for the trains.

They are fully automated (ATO GoA 4) and do not require an attendant on board.

On the North East Line, the trains draw 1,500 V DC power from an overhead catenary. Each 6-car train (Formation: DT–Mp–Mi–Mi–Mp–DT) comprises two Driving Trailer (DT) cars at each end, and four Motor Cars (Mp and Mi). The second and fifth cars of each train (Mp) are equipped with a pantograph. The interior of the North East Line C851E remains largely consistent with its predecessor, the C751C, apart from a few subtle upgrades such as improved cabin lighting.

Automatic Track Inspection (ATI)

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Two of the NEL C851E trains have their bogies installed with the Automatic Track Inspection (ATI) system, which is a system of cameras, lasers, and sensors installed on trains that help to detect defects like rail cracks or missing fasteners.[11][12] The NEL trains fitted with ATI are sets 7095/7096 and 7097/7098.

Train formation

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The coupling configuration of a NEL C851E in revenue service is DT–Mp–Mi+Mi–Mp–DT.

Cars of C851E (North East Line)
Car Type Driver Cab Motor Pantograph Car Length Wheelchair Bay
m ft in
DT✓✗23.6577 ft 7.1 in✗
Mp✗✓✓22.874 ft 9.6 in
Mi✗22.874 ft 9.6 in✓

The car numbers of the trains range from 7x087 to 7x098, where x depends on the carriage type. Individual cars are assigned a five-digit serial number by the rail operator SBS Transit. A complete six-car trainset consists of an identical twin set of one driving trailer (DT) and two motor cars (Mi & Mp) permanently coupled together. For example, set 7097/7098 consists of carriages 71097, 72097, 73097, 73098, 72098 and 71098.

  • The first digit identifies the line, which is always a 7.
  • The second digit identifies the car number, where the first car has a 1, the second has a 2 & the third has a 3.
  • The third digit is always a 0.
  • The fourth and fifth digits identify the set number.
  • Alstom built sets 7087/7088 – 7097/7098.

See also

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References

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  1. 1 2 "New Trains for North East Line to be Rolled Out for Passenger Service from 28 July 2023". Land Transport Authority. 27 June 2023. Archived from the original on 27 July 2023. Retrieved 27 June 2023.
  2. ↑ "Alstom to supply 34 Metropolis trains and signalling upgrade to Singapore metro". French Chamber Singapore. Archived from the original on 24 September 2015. Retrieved 9 August 2015.
  3. ↑ "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 15 June 2020. Retrieved 16 June 2020.
  4. ↑ "URBALIS Evolution: Controlling the Performance" (PDF). p. 4. Archived (PDF) from the original on 15 June 2020. Retrieved 16 June 2020.
  5. ↑ "Alstom to Supply 17 New Trains for North East Line Extension and Circle Line 6". Land Transport Authority. 30 April 2018. Archived from the original on 10 July 2021. Retrieved 23 November 2019.
  6. 1 2 Lim, Adrian (30 April 2018). "Alstom to supply 17 new MRT trains for North East Line and Circle Line". The Straits Times. Archived from the original on 16 November 2021. Retrieved 30 April 2018.
  7. 1 2 3 "Tender information". www.lta.gov.sg. Archived from the original on 26 July 2018. Retrieved 2 May 2018.
  8. 1 2 "851E Schedule" (PDF). www.lta.gov.sg. Archived (PDF) from the original on 15 September 2018. Retrieved 15 September 2018.
  9. ↑ "First of six new trains for North-East Line arrived in Singapore". Unscrambled.sg. 12 April 2021. Archived from the original on 5 July 2022. Retrieved 16 March 2022.
  10. ↑ "[Exclusive: Main Line Testing]SBS Transit C851E Set 7091/7092 at Potong Pasir". YouTube. 6 June 2023. Archived from the original on 9 June 2023. Retrieved 9 June 2023.
  11. ↑ "Six new trains added to the North-East Line from Jul 28". CNA. Retrieved 8 May 2026.
  12. ↑ "Factsheet: Technology for Depots and Trains to Improve Rail Reliability". Land Transport Authority. 13 November 2017. Archived from the original on 17 February 2020. Retrieved 17 February 2020.
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