Interurban multiple unit

Interurban multiple unit
Interurban multiple unit
	IMU 184 approaching Murrumba Downs station
	Interior of an IMU 160
Manufacturer	Walkers Limited (100 and 120); Downer EDI Rail/Bombardier (160);
Built at	Maryborough
Constructed	1996–1997 (100); 2001–2002 (120); 2007–2011 (160);
Number built	30 carriages (100); 12 carriages (120); 84 carriages (160);
Formation	3-car sets
Fleet numbers	101–110 (100); 121–124 (120); 161–188 (160);
Operators	Queensland Rail
Specifications
Train length	72.40 m (237 ft 6 in) (100 & 120); 72.42 m (237 ft 7 in) (160);
Car length	24.21 m (79 ft 5 in) (160 – end cars); 24.00 m (78 ft 9 in) (160 – intermediate cars);
Width	2.7 m (8 ft 10 in)
Height	3.9 m (12 ft 10 in)
Maximum speed	140 km/h (87 mph) (100 & 120); 130 km/h (81 mph) (160);
Weight	131.8 t (129.7 long tons; 145.3 short tons) (100); 130.4 t (128.3 long tons; 143.7 short tons) (120); 128.2 t (126.2 long tons; 141.3 short tons) (160);
Traction system	100: ABB MICAS-S2 GTO-VVVF; 120 and 160: Bombardier MITRAC IGBT-VVVF;
Traction motors	8 × 180 kW (240 hp) 3-phase AC induction motor
Power output	1.44 MW (1,930 hp)
Electric system(s)	25 kV 50 Hz AC (nominal) from overhead catenary
Current collector(s)	Pantograph
UIC classification	Bo′Bo′+Bo′Bo′+2′2′ (100); Bo′Bo′+2′2′+Bo′Bo′ (120/160);
Braking system(s)	Mix of electro-pneumatic and regenerative braking
Coupling system	Scharfenberg Type 10
Multiple working	Within type; With SMU260 (160 only);
Track gauge	1,067 mm (3 ft 6 in)

The Interurban multiple units (IMU) are a class of electric multiple units manufactured by Walkers Limited/Downer EDI Rail, Maryborough for Queensland Rail's Citytrain division between 1996 and 2011. The IMU is divided into in three subclasses, units 101-110 as the 100 series, units 121-124 as the 120 series, and units 161-188, as the 160 series.