Sydney Trains A & B sets

A & B sets
A & B sets
	B9 at Carlton station
In service	2011–present (A sets); 2018–present (B sets);
Manufacturer	Downer Rail; CRRC;
Assembly	Cardiff, Australia
Built at	Changchun, China
Replaced	S and C sets
Constructed	2010–2014 (A sets); 2017–2021 (B sets);
Entered service	1 July 2011 (A sets); 7 September 2018 (B sets);
Number built	791⁄2 A sets; 41 B sets;
Number in service	78 A sets; 41 B sets;
Number scrapped	11 carriages (8-car set A2, car D6342 of set A42, 2 prototype motor cars)
Formation	8 car sets; D–N–N–T–T–N–N–D
Fleet numbers	A1, A3-A78, A80; B1-B41;
Capacity	880 seated (896 including 16 wheelchair spaces); 1200 nominal peak; 2150 fully loaded (single destination/special event);
Operators	Sydney Trains
Depots	Auburn
Lines served	North Shore & Western; Inner West & Leppington; Bankstown; Cumberland; Olympic Park (weekends, public holidays and special events); Airport & South; Northern;
Specifications
Car body construction	Stainless steel
Train length	163.1 m (535 ft 1+1⁄4 in)
Car length	20,732 mm (68 ft 1⁄4 in) (D); 20,243 mm (66 ft 5 in) (N); 20,332 mm (66 ft 8+1⁄2 in) (T);
Width	3,035 mm (9 ft 11+1⁄2 in)
Height	4.41 m (14 ft 5+5⁄8 in)
Floor height	1.27 m (50 in) (rail top to floor); 1.97 m (77+1⁄2 in) (between floor and roof);
Doors	Plug-style, 2 per side
Wheel diameter	940 mm (37 in)
Wheelbase	2.3 m (7 ft 6+1⁄2 in)
Maximum speed	130 km/h (81 mph)
Weight	407 t (401 long tons; 449 short tons)
Axle load	17 t (17 long tons; 19 short tons)
Traction system	Hitachi 2-level IGBT–VVVF spread spectrum modulation
Traction motors	16 × Hitachi 183 kW (245 hp) 3-phase AC induction motor
Power output	2,928 kW (3,927 hp)
Acceleration	0.8 m/s2 (2.6 ft/s2)
Deceleration	1 m/s2 (3.3 ft/s2) (service); 1.1 m/s2 (3.6 ft/s2) (emergency);
HVAC	2 independent cooling units per car: 38 kW (51 hp) cooling, 24 kW (32 hp) heating
Electric system(s)	1,500 V DC (nominal) from overhead catenary
Current collector(s)	Pantograph
UIC classification	2′2′+Bo′Bo′+Bo′Bo′+2′2′+2′2′+Bo′Bo′+Bo′Bo′+2′2′
Braking system(s)	Knorr-Bremse regenerative brake with blended electro-pneumatic wheel mounted disc brakes
Coupling system	Scharfenberg coupler (non-electrical) on ends; Semi-permanent couplers between cars;
Track gauge	1,435 mm (4 ft 8+1⁄2 in) standard gauge
Notes/references

The Sydney Trains A & B sets (also referred to as the Waratah trains) are classes of electric multiple units that currently operate on the Sydney Trains network. Based on the M sets, the Waratahs were manufactured by a joint consortium between CRRC and Downer Rail, with initial construction taking place overseas in Changchun before final assembly at Downer Rail's Cardiff Locomotive Workshops. The sets were named after the Waratah flower, which is the state's floral emblem.

The initial order for 78 A sets was the largest rolling stock order in Australia's history. These 624 A set carriages make up around half of the Sydney Trains fleet and replaced two-thirds of the 498 S set carriages. Delivery commenced in July 2011 and was completed in June 2014.

An order for 24 additional trains with updated technology and a lightly revised design was placed in December 2016. These are classified as B sets, or colloquially as Waratah Series 2 trains. The delivery of the first order of sets began in September 2018 and was completed in June 2019, while a second and final order of a further 17 sets began in September 2020 and was completed in June 2021.

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