Kawasaki Heavy Industries & CRRC Qingdao Sifang C151C

The Kawasaki Heavy Industries & CRRC Qingdao Sifang[3] C151C is the sixth generation of rolling stock introduced on the existing East West and North South lines of Singapore's Mass Rapid Transit (MRT) system.

Not to be confused with Kawasaki Heavy Industries C151, Kawasaki Heavy Industries & CSR Qingdao Sifang C151A, Kawasaki Heavy Industries & CSR Qingdao Sifang C151B, Bombardier Movia CR151, or Hyundai Rotem CJ151.

Kawasaki Heavy Industries & CRRC Qingdao Sifang C151C
A C151C train approaching Choa Chu Kang Station
Interior of a C151C train. Notice the foldable seats present in the train as compared to previous types.
In service30 September 2018 (2018-09-30) – present
ManufacturerKawasaki Heavy Industries
CRRC Qingdao Sifang
Built atQingdao, Shandong, China
Constructed2017 – 2018
Entered service30 September 2018
Number built72 vehicles
(12 trainsets)
Number in service72 vehicles
(12 trainsets)
Formation6 per trainset
DT–M1–M2–M2–M1–DT
Fleet numbers701/702 – 723/724
Capacity1920 passengers
Operator(s)SMRT Trains (SMRT Corporation)
Depot(s)Bishan
Ulu Pandan
East Coast (future)
Line(s) served NSL  North South Line
Specifications
Car body constructionAluminium-alloy construction
Car length23.5 m (77 ft 1 1⁄4 in)
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 speed90 km/h (56 mph) (design)
80 km/h (50 mph) (service)
Traction systemFuji Electric IGBT-VVVF
Acceleration1.0 m/s2 (3.3 ft/s2)
Deceleration1.2 m/s2 (3.9 ft/s2) (service)
1.3 m/s2 (4.3 ft/s2) (emergency)
Electric system(s)750 V DC third rail
Current collection methodCollector shoe
UIC classification2'2' + Bo'Bo' + Bo'Bo' + Bo'Bo' + Bo'Bo' + 2'2'
Safety system(s)Current: Thales SelTrac® Moving Block CBTC ATC with subsystems of ATO GOA 3 (DTO), ATP, NetTrac ATS, CBI[1][2]
Track gauge1,435 mm (4 ft 8 1⁄2 in) standard gauge

Twelve trains were purchased. They were delivered between 2017 and 2019, and were tested before the full service in 2019.[4][5] The first was delivered on 27 October 2017. The interior design was unveiled on 28 February 2018 at Tuas Depot with two trains showcased. This brought the total number of trains operating on the NSEWL to 198 trainsets, up from the previous 186. The addition tripled the number of trains on the North-South and East-West Lines when they were first opened.

The first three C151C trainsets commenced revenue service on 30 September 2018 on the North-South Line.[6] The last trainset (723/724) entered revenue service on 23 March 2019. As of early 2020, they are only regulated to revenue service on the North South Line.

Tender

The tender for trains under the contract 151C was closed on 14 May 2015 with three bids. The LTA has shortlisted all of them and the tender results were published on 22 September 2015.[7][8]

S/N Name of tenderer Amount ($S)[8]
1 CRRC Zhuzhou Locomotive Co., Ltd. 134,608,695.70
2 Kawasaki Heavy Industries, Ltd. / Kawasaki Heavy Industries (Singapore) Pte Ltd & CRRC Qingdao Sifang Consortium 136,800,000.00 (alternative)
3 Hyundai Rotem 136,799,928.00

Design

The C151C is the first MRT rolling stock on the NSEWL to be fitted with fold-up seats.[9][10]

The C151C retains the design and specifications from the earlier C151B trains but sports LTA's new corporate livery already introduced on the C951 trains, incorporating green and red stripes against a white background.

The C151C is the second train type to be equipped with STARIS 2.0, which consists of two LCD screens displaying travel information and ads. Travel information includes upcoming stations, door closing warnings and attractions near the station.

The C151C features an improved current collector device which can report information to the Train Integrated Management System (TIMS) if any collector shoe is sheared off the bogie.[11]

Equipment

Main propulsion controller

The C151C trains are the fifth commuter type Electric Multiple Unit (EMU) made in Japan to feature electric systems fully manufactured by Fuji Electric. Propulsion is controlled by VVVF inverter with two-level IGBT semiconductor controller, rated at 415 kV. Each inverter unit controls two motors on one bogie (1C2M), and one motor car features two such units. Motors are three-phase AC induction type, model MLR109, with a maximum output of 140 kW.

Train formation

The configuration of a C151C in revenue service is DT-M1-M2-M2-M1-DT

Cars of C151C
Car type Driver cab Motor Collector shoe Car length
mm ft in
DT✓✗✓ 23,830 78 ft 2.2 in
M1✗✓✓ 22,800 74 ft 9.6 in
M2✗✓✓ 22,800 74 ft 9.6 in

The car numbers of the trains range from x701 to x724, where x depends on the carriage type. Individual cars are assigned a four-digit serial number. A complete six-car trainset consists of an identical twin set of one driving trailer (DT) and two motor cars (M1 & M2) permanently coupled together. For example, set 705/706 consists of carriages 3705, 1705, 2705, 2706, 1706, and 3706.

  • The first digit identifies the car number, where the first car has a 3, the second has a 1, and the third has a 2.
  • The second digit is always a 7.
  • The third digit and fourth digit are the train identification numbers. A full-length train of six cars has two different identification numbers. For example, 705/706 (normal coupling) or 705/720 (cross-coupling).

Doubts about the consortium
Main article: Kawasaki Heavy Industries & CSR Qingdao Sifang C151A § Operational problems

The award of the C151C turnkey contract to the Kawasaki Heavy Industries & CSR Qingdao Sifang consortium was briefly politicised in Singapore, when the defects from the relatively new C151A trains constructed by the same consortium were made public on 5 July 2016. This was after Gerald Giam from the Workers Party, commenting through an official Facebook post, doubted the decision by the Land Transport Authority to award the subsequent contracts, specifically both the design and supply of C151C and CT251 rail cars to the same consortium in 2015.[12] This was despite the Land Transport Authority and operator SMRT Trains officially acknowledging the C151A crack defects as early as 2013.[13][14]

Incidents

Originally, only two units were supposed to commence revenue service on 30 September 2018 on the NSL. However, one unit suffered from signalling faults after being launched on the line in less than a hour, and as a result the train was withdrawn back to Bishan Depot as a precautionary measure. A substitute train was then deployed to replace it.

References
  1. "THALES Urban Rail Signalling Singapore – North-South / East-West Lines" (PDF). Archived (PDF) from the original on 16 June 2020. Retrieved 16 June 2020.
  2. Fang, Joy (2 February 2012). "Coming: $600m upgrade for MRT system/New train measures a 'catch-up'". My Paper. pp. A2, A6. Archived from the original on 18 May 2015. Retrieved 13 May 2015.
  3. "LTA Singapore Orders 12 MRT Trains (72 cars) for North-South/East-West Lines | Kawasaki Heavy Industries, Ltd". 29 April 2016. Archived from the original on 29 April 2016. Retrieved 8 June 2017.CS1 maint: BOT: original-url status unknown (link)
  4. https://www.straitstimes.com/singapore/tip-up-seats-on-new-trains-to-allow-for-more-passenger-standing-room
  5. "Kawasaki Heavy Industries & CSR Qingdao Sifang C151C | Land Transport Guru". Land Transport Guru. 29 February 2016. Retrieved 29 May 2018.
  6. "New MRT trains with tip-up seats now in service". The Straits Times. 30 September 2018. Retrieved 30 September 2018.
  7. TENDER INFORMATION - Land Transport Authority, 22 Sep 2015
  8. CONTRACT 151C - Land Transport Authority
  9. "12 More Trains to Boost Capacity of North-South and East-West Lines". Land Transport Authority. 22 September 2015. Archived from the original on 13 February 2020.
  10. Tan, Christopher (14 August 2018). "SMRT adding 12 trains to two most heavily used lines". The Straits Times.
  11. "Kawasaki Heavy Industries & CRRC Qingdao Sifang C151C". Retrieved 15 March 2019.
  12. So the vendor's dismal track record can become a point in their favour? - Gerald Giam Facebook page, 8 July 2016 9:35am (GMT+8)
  13. "Defects on SMRT trains 'not safety-critical', to be repaired by manufacturer: LTA". Retrieved 5 July 2016.
  14. "26 China-made MRT trains sent back to fix defects". The Straits Times. Retrieved 5 July 2016.
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