Kawasaki Heavy Industries C151
The Kawasaki Heavy Industries C151 is the first generation electric multiple unit (EMU) rolling stock in operation on the North–South and East–West lines of Singapore's Mass Rapid Transit (MRT) system, manufactured by a consortium led by Kawasaki Heavy Industries (KHI) under Contract 151. They were first introduced in 1987 and are the oldest trains in operation on the network.
Kawasaki Heavy Industries (KHI) C151
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A Kawasaki C151 train before refurbishment A refurbished Kawasaki C151 train | |
Interior of a Kawasaki C151 before refurbishment Interior of a refurbished Kawasaki C151 | |
| In service | 7 November 1987 – Present |
| Manufacturer | Kawasaki (with Nippon Sharyo, Tokyu Car Corporation, and Kinki Sharyo) |
| Built at | Kobe, Japan |
| Constructed | 1986 – 1989 |
| Entered service | 7 November 1987 |
| Refurbished | Hyundai Rotem (with Mitsui) 2006 – 2008 |
| Scrapped | June 2020 – |
| Number built | 396 Vehicles (66 Sets) |
| Number in service | 318 Vehicles (53 Sets) |
| Successor | Alstom Movia R151 |
| Formation | 6 cars per trainset DT–M1–M2+M2–M1–DT |
| Fleet numbers | 001/002 – 131/132 |
| Capacity | 1920 passengers
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| Operators | SMRT Trains (SMRT Corporation) |
| Depots | |
| Lines served |
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| Specifications | |
| Car body construction | Aluminium-alloy double-skinned construction |
| Train length | 138.5 m (454 ft 4+3⁄4 in) |
| Car length |
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| Width | 3.2 m (10 ft 6 in) |
| Height | 3.69 m (12 ft 1+1⁄4 in) |
| Doors | 1,450 mm (57+1⁄16 in), 8 per car |
| Wheel diameter | 850–775 mm (33.5–30.5 in) (new–worn) |
| Wheelbase | 2,500 mm (98 in) |
| Maximum speed |
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| Weight |
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| Axle load | 16 t (16 long tons; 18 short tons) |
| Traction system | |
| Traction motors |
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| Power output | As built: 2.32 MW (3,111 hp) |
| Transmission | Westinghouse-Natal (WN) drive; gear ratio: 6.57 : 1 (92 / 14) |
| Acceleration | 1 m/s2 (3.3 ft/s2) |
| Deceleration |
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| Electric system(s) | 750 V DC third rail |
| Current collector(s) | Collector shoe |
| UIC classification | 2′2′+Bo′Bo′+Bo′Bo′+Bo′Bo′+Bo′Bo′+2′2′ |
| Bogies | Siemens SF 2100 |
| Braking system(s) | Westinghouse Brake & Signal electro-pneumatic, regenerative and rheostatic |
| Safety system(s) | |
| Coupling system | Scharfenberg |
| Track gauge | 1,435 mm (4 ft 8+1⁄2 in) standard gauge |
Sixty-six trainsets consisting of six cars each and a single money train set consisting of four cars were contracted in 1984. They were manufactured from 1986 to 1989 in two batches by a Japanese consortium consisting of the namesake Kawasaki, Nippon Sharyo, Tokyu Car Corp and Kinki Sharyo following a round of intense competitive bidding by international rolling stock manufacturers.
The trains underwent a two-year mid-life interior refurbishment programme by Hyundai Rotem. After the 2011 major train disruptions on 15 and 17 December 2011, further plans to upgrade its mechanical components to increase its reliability were made. The first trainset to receive this upgrade, which included a replacement traction system to PMSM, entered service in July 2015.
The R151 trains will gradually replace all of the first-generation C151 trains from 2022, with the latter to be entirely superseded by 2026.