Kawasaki Heavy Industries 151

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Kawasaki Heavy Industries 151
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*Graphic From SGTrains/Wikipedia/LTA
In service Passenger: 1987 – Present
Money: 1987 – 2007
Manufacturer Kawasaki Heavy Industries (with Nippon Sharyo, Tokyu Car, and Kinki Sharyo)
Origin Kobe, Japan
Constructed 1986 – 1989
Refurbishment 2006 – 2008
Hyundai Rotem (with Mitsui, dU LexBuild and RM Transit Technology)
Number Built Passenger: 396 cars (66 Trains)
Money: 4 cars (1 Train)
Body Construction Aluminium-alloy double-skinned construction
Length 23.65 m (DT)
22.8 m (M1/M2)
Width 3.2 m
Height 3.69 m
Doors 1.45 m, 8 per car
Maximum Speed Design: 90 km/h
Service: 80 km/h
Traction Control Original: 4-quadrant/GTO chopper control (Mitsubishi Electric)
Upgraded: IGBT-VVVF (Toshiba PMSM)
Line Voltage 750V DC Third Rail
Track Gauge 1435 mm Standard Gauge

Kawasaki Heavy Industries 151 are the first generation of trains running on the North–South Line and the East–West Line. These trains were manufactured from 1986 to 1989 in batches by a Japanese consortium consisting of Kawasaki Heavy Industries, Nippon Sharyo, Tokyu Car Corp, Kinki Sharyo under the Contract 151. No visible differences can be found in any of these batches, which were built to agreed specifications.

The trains underwent mid-life refurbishment program from 2006 to 2008 by Hyundai Rotem. Certain trains also have its Traction Control replaced to further enhanced operations reliability.


The Japanese consortium of Kawasaki Heavy Industries with Nippon Sharyo, Tokyu Car Corp and Kinki Sharyo was awarded Contract 151 in 1984 at a cost of $581.5 million for the construction of 400 passenger cars.[1]


On 3 September 2004, Hyundai Rotem, Mitsui, RM Transit Technology and dU LexBuild received an order to refurbish all 396 carriages at a cost of $142.7 million.[2] The works included the refurbishment of interior fixtures, the addition of wheelchair spaces, the upgrading of onboard communications equipment, enhancement of the public announcement system, and general improvement of the cars' appearance.[3] SMRT said the reasons for refurbishment were wear and damage of important components over the past two decades and water leaks from the air-conditioning system on some trains.[3] The company chose this option instead of buying new rolling stock, which would have cost S$792 million.[3] All trains has finished refurbishment in end-2008, marking the 2 years refurbishment programme.


Following the 2011 major train disruptions, SMRT announced it was replacing important engineering components on all KHI trains by 2019.[4] This included changing the existing Mitsubishi Electric propulsion system for the newer Insulated-gate bipolar transistor (IGBT) and Permanent Magnet Synchronous Motor (PMSM) propulsion system by Toshiba.[5]

In tandem with the replacement of the signalling system on the North–South Line and East–West Line with the newer Thales SelTrac signalling system, new equipment are installed in the passenger compartment of the trailer cars.[6]


In October 2016, LTA announced that it will be calling for a tender of new trains to replace all KHI trainsets.[7]

For the time being, LTA will work with SMRT to improve the reliability of the 66 first-generation trains until their replacement trains are ready.

Withdrawal of KHI trainsets commenced on 22 June 2020. Some trains will be preserved or donated for educational and training purposes.[8]


Passenger Trains[edit]

Initial Refurbishment
DT M1 M2 M2 M1 DT
DT M1 M2 M2 M1 DT
Exterior Design
Livery White with red strip Black,Red,Grey (Top to bottom)
Train Run Number Plastic Roller Blinds
Interior Design
Seating Capacity 372 Original Bar Train
296 212 (208 after signalling upgrade)
Wheelchair Bay N/A 2, 1 each at Third and Fourth Car
Door Closing Indicator Lights N/A 3 Red LED (Top)
Passenger Information System N/A SMRT Active Route-map and Information System (Dynamic Route Map + VFD display)
Safety System ATC, ATO, ATP ATC, ATO, ATP, ATS (after signalling upgrade)
Signalling System Fixed Block Fixed Block
Communication Based Train Control (after signalling upgrade)
Traction Control 4-quadrant/GTO chopper control (Mitsubishi Electric) 4-quadrant/GTO chopper control (Mitsubishi Electric)

Money Train[edit]

Exterior Design
Livery White with red strip
Train Run Number Plastic Roller Blinds
Interior Design
Seating Capacity 248
Wheelchair Bay N/A
Door Closing Indicator Lights N/A
Passenger Information System N/A
Safety System ATC, ATO, ATP
Signalling System Fixed Block
Traction Control 4-quadrant/GTO chopper control (Mitsubishi Electric)

Fleet Numbering[edit]

The car numbers of the trains range from x001 to x132 (for Passengers Trains) and x301 to x302 (for Money Train), where x depends on the carriage type.

  • The first digit identifies the position of the car from the closest end of the train; where ‘3’ represents first car, ‘1’ represents second car and ‘2’ represents third car.
    • (Example) Passenger Vehicle 131/132 would consist of 6 cars with serial number 3131, 1131, 2131, 2132, 1132 and 3132 respectively.
    • (Example) Passenger Vehicle 301/302 would consist of 4 cars with serial number 3301, 1301, 2301, 3302 respectively.
  • Depending on the direction of travel, the sequence may be reversed.


  1. "シンガポール向け地下鉄電車を納入". Kawasaki Heavy Industries (Archived). Retrieved 8 November 2008.
  2. "シンガポールにおける地下鉄電車改修案件の受注について". Mitsui (Archived, 3 September 2004). Retrieved 8 November 2008
  3. 3.0 3.1 3.2 "MRT trains get $145m overhaul". T. Rajan (Straits Times, 5 November 2006.
  4. "Older SMRT trains to get makeover for better ride". Royston Sim (Straits Times, 15 May 2013). Retrieved 13 May 2015.
  5. "Older MRT trains to get new motors from Japan". Hoe Pei Shan (Straits Times, 5 July 2013). Retrieved 13 May 2015.
  6. "Coming: $600m upgrade for MRT system/New train measures a ‘catch-up’". Joy Fang (My Paper,2 February 2012). Retrieved 13 May 2015.
  7. "The Rail Report: New Signalling System, Rail Line and Tuas West Extension Opening Next Year". Land Transport Authority.
  8. "Factsheet: LTA to Decommission First-Generation NSEWL Trains from June 2020". Land Transport Authority (22 June 2020).
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