Alstom Metropolis 751A

Alstom Metropolis 751A *Graphic From SGTrains/Wikipedia/LTA
In service	2003 – Present
Manufacturer	Alstom
Origin	Valenciennes, France
Constructed	2000 – 2001
Refurbishment	2019 – Present CRRC Nanjing Puzhen
Number Built	150 cars (25 Trains)
Statistics
Body Construction	Welded aluminium
Length	23.65 m (DT) 22.8 (Mp/Mi)
Width	3.2 m
Height	3.7 m
Doors	1.45 m, 8 per car
Maximum Speed	Design: 100 km/h Service: 90 km/h
Traction Control	IGBT-VVVF (Alstom ONIX)
Line Voltage	1500V DC Overhead Catenary
Track Gauge	1435 mm Standard Gauge

Alstom Metropolis 751A are the first generation of trains running on the North East Line.

History

The trains on the North East Line are powered by overhead catenary, a first in history. Rolling stock on all the other operating lines are powered by a third rail because the authorities considered overhead wires to be unsightly and did not allow for trains to be powered using this method on elevated lines. Since this line is the first to be fully underground, the authorities had a choice between powering the trains on this line by overhead catenary or third rail..

Refurbishment

In December 2018, the Land Transport Authority (LTA) had awarded the contract worth about $116.7 million to CRRC Nanjing Puzhen for the refurbishment of 751A. The trains' interior, such as seats, panels, and flooring, will be replaced whereas the air-conditioning & ventilation systems will be upgraded. The trains will also be retrofitted with new passenger information displays. The first refurbished train was completed in 2022 and works on the remaining trains are expected to be completed by 2024.

Design/Features

	Initial		Refurbished
	DT Mp Mi Mi Mp DT		DT Mp Mi Mi Mp DT
Exterior Design
Livery	Black,Red,Purple,White (Top to bottom)
Train Run Number	Orange LED
Interior Design
Seating Capacity	Original	Bar Train	240
	296	240
Wheelchair Bay	2, 1 each at Third and Fourth Car
Door Closing Indicator Lights	1 Yellow Alert Light (Top)
Passenger Information System	Visual Passenger Information System (LED display + LCD screen)		Visual Passenger Information System Dynamic Route Map Display
System
Safety System	ATC, ATO, ATP, ATS
Signalling System	Communication Based Train Control
Traction Control	IGBT-VVVF (Alstom ONIX)

Fleet Numbering

The car numbers of the trains range from 7x001 to 7x050, where x depends on the carriage type.

• The second digit identifies the position of the car from the closest end of the train; where ‘1’ represents first car, ‘2’ represents second car and ‘3’ represents third car.
  • (Example) Passenger Vehicle 7049/7050 would consist of 6 cars with serial number 71049, 72049, 73049, 73050, 72050 and 71050 respectively.
• Depending on the direction of travel, the sequence may be reversed.