Siemens Nexas

Siemens Nexas
Siemens Nexas
	Refurbished Siemens Nexas 717M-2509T-718M arriving at Flinders Street station, April 2024
	Refurbished interior
In service	2003–present
Manufacturer	Siemens Transportation Systems
Built at	Vienna, Austria
Family name	Modular Metro
Constructed	2002–2005
Entered service	3 April 2003
Number built	216 carriages (72 sets)
Number in service	216 carriages (72 sets)
Formation	3-car sets (M–T–M)
Fleet numbers	701M–844M (driving motors); 2501T–2572T (trailers);
Capacity	Until 2016: 264 seated per 3-car set; Since 2016: 216 seated per 3-car set;
Operators	Metro Trains Melbourne
Lines served	Frankston Werribee Williamstown; Flemington Racecourse; Craigieburn Upfield Sunbury; Sandringham;
Specifications
Car body construction	Stainless steel single deck
Train length	71.91 m (235 ft 11+1⁄8 in)
Car length	M: 24.07 m (78 ft 11+5⁄8 in); T: 23.77 m (77 ft 11+13⁄16 in);
Width	2.95 m (9 ft 8+1⁄8 in)
Height	4,141 mm (13 ft 7+1⁄16 in)
Floor height	1.23 m (4 ft 7⁄16 in)
Doors	Twin-leaf plug, 2 × 2 per car
Wheel diameter	850–770 mm (33–30 in) (new–worn)
Wheelbase	2.6 m (8 ft 6 in)
Maximum speed	147 km/h (91 mph) (design); 115 km/h (71 mph) (service);
Weight	41.5 t (40.8 long tons; 45.7 short tons) (driving motors, tare); 37.8 t (37.2 long tons; 41.7 short tons) (trailers, tare);
Axle load	18.5 t (18.2 long tons; 20.4 short tons)
Traction system	Siemens IGBT–VVVF
Traction motors	8 × Siemens 3-phase AC induction motor
Acceleration	1.2 m/s2 (3.9 ft/s2) (design); 1 m/s2 (3.3 ft/s2) (service);
Deceleration	1 m/s2 (3.3 ft/s2) (service); 1.3 m/s2 (4.3 ft/s2) (emergency);
Electric system(s)	1,500 V DC (nominal) from overhead catenary
Current collector(s)	Pantograph
UIC classification	Bo′Bo′+2′2′+Bo′Bo′
Bogies	SF 5000 E TDG (powered), SF 5000 LDG (trailer)
Minimum turning radius	118 m (387 ft 2 in)
Coupling system	Dellner
Track gauge	1,600 mm (5 ft 3 in) broad gauge

The Siemens Nexas is a class of electric multiple units manufactured by Siemens Transportation Systems for the suburban railway network of Melbourne, Australia between 2002 and 2005. The design of the trains was based on the Siemens Modular Metro.

^ ^a ^b "WTT Network Configuration: Metro Rolling Stock" (PDF). Metro Trains Document Portal. Archived from the original on 21 September 2022. Retrieved 21 August 2024.
^ "Metro System, Three-Car Units, Melbourne, Australia". Siemens. Archived from the original on 19 October 2006. Retrieved 18 April 2023.
^ ^a ^b ^c "First Class Bogies" (PDF). Siemens. Archived from the original (PDF) on 22 July 2019.

[wtt-1] "WTT Network Configuration: Metro Rolling Stock" (PDF). Metro Trains Document Portal. Archived from the original on 21 September 2022. Retrieved 21 August 2024.

[2] "Metro System, Three-Car Units, Melbourne, Australia". Siemens. Archived from the original on 19 October 2006. Retrieved 18 April 2023.

[bogie-3] "First Class Bogies" (PDF). Siemens. Archived from the original (PDF) on 22 July 2019.

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