C751B

Kawasaki Heavy Industries – Nippon Sharyo (KNS) C751B
A C751B trainset at Eunos.
Interior of a C751B motor compartment.
Manufacturer	and Nippon Sharyo
Built at	Japan
Constructed	1999 – 2001
Entered service	28 January 2000 – Present
Number built	126 vehicles (21 trainsets)
Number in service	126 vehicles (21 trainsets)
Formation	6 per trainset DT–M1–M2–M2–M1–DT
Fleet numbers	311/312 ~ 351/352
Capacity	1920 passengers 276/288 seats
Operator(s)	SMRT Trains (SMRT Corporation)
Depot(s)	Bishan, Changi, Tuas, Ulu Pandan and East Coast(future)
Line(s) served	North South Line East West Line
Specifications
Car body construction	Aluminium-alloy double-skinned construction
Car length	23 m (75 ft 5 1⁄2 in)
Width	3.2 m (10 ft 6 in)
Height	3.7 m (12 ft 1 5⁄8 in)
Doors	1,450 mm (57 1⁄16 in), 8 per car
Maximum speed	90 km/h (56 mph) (design) 80 km/h (50 mph) (service)
Weight	222.8 t (219.3 long tons; 245.6 short tons) (DT) 320.3 t (315.2 long tons; 353.1 short tons) (laden)
Traction system	IGBT-VVVF (Fuji Electric) Output 415 kVA (2 units per motor car (1C2M))
Traction motors	Fuji Electric MLR109 Self-Ventilated Three-Phase AC Induction Motor ( 140 kW (190 hp) 550V 193A 1760 r/min
Power output	2.24 MW (3,000 hp) )
Transmission	Westinghouse-Natal (WN) Drive
Acceleration	1.0 m/s2 (3.3 ft/s2)
Deceleration	1.3 m/s2 (4.3 ft/s2) (service)
Auxiliaries	IGBT-VVVF (Fuji Electric) Auxiliary Inverter with Battery Charger 80 kVA + 16 kW
Electric system(s)	750 V DC Third rail
Current collection method	Collector Shoe
Bogies	Bolsterless Air Spring (Monolink Axlebox Type)
Braking system(s)	Regenerative Braking, Air Brakes
Safety system(s)	Current: Westinghouse Fixed Block ATC with subsystems of ATO GOA 2 (STO), ATP and ATS Future: Thales SelTrac® Moving Block CBTC, ATC with subsystems of ATO GOA 3 (DTO), ATP, NetTrac ATS, CBI
Track gauge	1,435 mm (4 ft 8 1⁄2 in) standard gauge

Kawasaki Heavy Industries – Nippon Sharyo C751B, sometimes abbreviated to C751B or KNS C751B is the third generation Electric multiple unit rolling stock in operation on the North South and East West Lines of Singapore's Mass Rapid Transit (MRT) system since early 2000. 21 trainsets of 6 cars each were purchased, and it is the first rolling stock to feature VVVF insulated-gate bipolar transistor traction control system. manufactured 66 cars and Nippon Sharyo manufactured 60 cars respectively with no comparable differences, having built to agreed specifications. These trains are the third generation of rolling stock to be used on the two lines. These trains were fitted with Mobitec MobiLED electronic destination displays for train run numbers.

The majority of these trains are operated on the North South Line with only a handful operating on the East West Line. It have $231million to pay C751B as a contract.

The front of the train sports a more slanted and streamlined look, with the run number display in Orange LED Display. The sides of the train, which is a standard livery, consists of a shiny black area covering the middle portion of the train from just above the windows to below the windows, followed by a bold red stripe and a thinner grey stripe at the bottom of the train.

All cars are equipped with 6 LCD per car (which have since been deactivated), and all except trainset 347/348 which features LED displays (which have been replaced by the VFDs of the STARIS). These used to show rail travel information, commercials and movie trailers. They also come with more grab poles, wider seats, more space near the doors and wheelchair space. The interior and exterior design of the train have been improved, incorporating a much sleeker design. The LED displays however have seen little usage after a new series of voice announcements were introduced across the system in mid-2008. All VPIS were removed to make way for the STARIS by 2010. In 2013, support bars are added to the seats with hand grips, and the middle handrails with hand grips are configured to join across nearly one carriage, as such all grabpoles that branched out into three are replaced by regular single grabpoles.