Kawasaki Heavy Industries & CSR Qingdao Sifang C151A

Kawasaki Heavy Industries & CRRC Qingdao Sifang C151A
Kawasaki Heavy Industries & CRRC Qingdao Sifang C151A
	A C151A train approaching Boon Lay station, 2024
	Interior of a C151A train.
Stock type	Electric multiple unit
In service	27 May 2011 – present
Manufacturer	Kawasaki; CRRC Qingdao Sifang;
Built at	Qingdao, Shandong, China
Constructed	2011 (Batch 1); 2013 – 2014 (Batch 2);
Entered service	27 May 2011
Number built	210 Vehicles (35 Sets)
Number in service	210 Vehicles (35 Sets)
Formation	6 per trainset; DT–M1–M2+M2–M1–DT
Fleet numbers	501/502 – 543/544 (Batch 1); 545/546 – 569/570 (Batch 2);
Capacity	296 seated; 1,624 standing; 2 PIW spaces
Operators	SMRT Trains (SMRT Corporation)
Depots	Bishan; Ulu Pandan; Tuas; Changi;
Lines served	NSL North–South Line; EWL East–West Line;
Specifications
Car body construction	Aluminium-alloy double-skinned construction
Train length	138.86 m (455 ft 6+7⁄8 in)
Car length	23.83 m (78 ft 2 in) (DT); 22.8 m (74 ft 10 in) (M);
Width	3.2 m (10 ft 6 in)
Height	3.7 m (12 ft 2 in)
Doors	1,450 mm (57+1⁄8 in), 8 per car, 4 per side
Maximum speed	90 km/h (56 mph) (design); 80 km/h (50 mph) (service);
Weight	226.8 t (223.2 long tons; 250.0 short tons) (unladen); 335.9 t (330.6 long tons; 370.3 short tons) (laden);
Traction system	Fuji Electric IGBT–VVVF (output 415 kVA)
Traction motors	16 × Fuji Electric MLR111 150 kW (201 hp) self-ventilated 3-phase AC induction motor; 550V 204A 1765 r/min
Power output	2.24 MW (3,004 hp)
Transmission	Westinghouse-Natal (WN) Drive
Acceleration	1 m/s2 (2.2 mph/s)
Deceleration	1.2 m/s2 (2.7 mph/s) (service); 1.3 m/s2 (2.9 mph/s) (emergency);
Auxiliaries	Fuji Electric auxiliary inverter with battery charger; 80 kVA + 16 kW
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	bolsterless air-spring monolink axlebox type
Braking system(s)	Regenerative, rheostatic and electro-pneumatic
Safety system(s)	Original: Westinghouse Brake and Signal Company FS2000 ATP fixed block ATC under ATO GoA 2 (STO), with subsystems of ATP and ATS; Current: Thales SelTrac® moving block CBTC ATC under ATO GoA 3 (DTO), with subsystems of ATP, NetTrac ATS and CBI
Coupling system	Scharfenberg
Track gauge	1,435 mm (4 ft 8+1⁄2 in) standard gauge

The Kawasaki Heavy Industries & CSR Qingdao Sifang C151A is the fourth generation electric multiple unit rolling stock in operation on the existing North–South (NSL) and East–West (EWL) lines of Singapore's Mass Rapid Transit (MRT) system, manufactured by Kawasaki Heavy Industries (KHI) and CRRC Qingdao Sifang under Contract 151A. Their introduction to the network has increased the capacity of both lines by 15%.

They are the last batch of rolling stock on the two lines to be painted in the "Blackbird" livery. Developed from the Kawasaki Heavy Industries & Nippon Sharyo C751B trainsets, further developments of the type include the C151B and C151C trains featuring design updates and changes. The C151A was the first rolling stock on the MRT network to be manufactured in China. The initial contract of 22 trainsets of 6 cars each was awarded to KHI and Sifang by the Land Transport Authority.

In 2013, a further order of 13 trainsets was placed, with all 35 trainsets in revenue service as of 2014. In 2016, an investigative news report from Hong Kong's FactWire alleged that C151A trainsets were discreetly being shipped back to Qingdao for rectification due to multiple defects, including an exploding battery and cracks on trains. The Singapore government subsequently acknowledged the trains were returned for rectification works, and have since published official statements to address FactWire's specific allegations.

Builder's plate of a C151A train