|Contract 851E (CCL)|
|Number built||69 Vehicles (23 trainsets)|
|Formation||3 cars per trainset
|Line(s) served||Circle Line
|Doors||8 per car|
|Electrification||750 V DC third rail|
|Track gauge||Standard Gauge (1435mm)|
The Land Transport Authority (LTA)’s Contract 851E for the procurement of 17 additional electric multiple unit (EMU) trains for the North East Line and Circle Line was awarded to Alstom Transport for ~S$250 million in April 2018.
The new trains are the third-generation rolling stock for both the NEL and CCL, which will supplement previous generations of Alstom Metropolis rolling stock. They were procured ahead of the opening of the North East Line extension (1.7km, projected 2023) and the Circle Line Stage 6 (4.3km, projected 2025).
The trains are manufactured and assembled in Alstom’s manufacturing facility in Barcelona, Spain and progressively shipped to Singapore from 2020 for NEL and 2021 for CCL. Thereafter, trains would undergo testing and commissioning before they are put into service when the extensions open.
On 25 July 2019, LTA announced that they would be purchasing 12 new trains from Alstom, in addition to the 11 trains that were procured in April 2018 for Circle Line Stage 6.
As the sole bidder for Contract 851E, Alstom Transport was awarded the contract. The trains were built as part of Alstom’s Metropolis family of urban EMU trains. While Contract 851E was originally offered solely for 11 Circle Line trains, the modified contract terms added 6 North East Line trains for a total of 17 trains (comprising a total of 69 trainsets).
With the new trains, the existing NEL fleet was expanded by 14% from 43 to 49 trains and the existing CCL fleet increased by 17% from 64 to 75 trains. While being awarded under the same contract, trains built for the NEL and CCL differ in technical specifications owing to different electrification used on both lines.
The trains draw power from a 1500 V DC overhead catenary. They are fully automated (ATO GoA 4) and do not require an attendant on board. 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 trains draw power from a 750 V DC bottom-contact third rail. They are fully automated (ATO GoA 4) and do not require an attendant on board. Each 3-car train (Formation: Mc1–Tc–Mc2) comprises two Motor Cars (Mc1 and Mc2) at each end, and an unpowered Trailer Car (Tc) in the middle.
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. Current collector shoe sensors on the new CCL trains enables the operator to react promptly and take necessary measures if any dislodgement is detected.
In addition, two of the new CCL three-car trains are each fitted with an Automatic Track Inspection (ATI) System, which enables monitoring of the running rails, track equipment and sleepers while the trains are in operation. The ATI System supplements existing track inspection activities for timely and more effective identification of rail and trackside components which require maintenance.
External Links & References
- Alstom to supply 17 additional Metropolis trains for Singapore Circle Line and North East Line – Alstom
- Alstom to Supply 17 New Trains for North East Line Extension and Circle Line 6 – LTA
- Price Schedule for Contract 851E – LTA (PDF)