Transperth B-series train

Transperth B-series
Two B-series sets at McIver in February 2010
Interior of a B-series carriage
Manufacturer	Downer Rail/Bombardier
Built at	Maryborough
Entered service	2004
Number under construction	78 3-carriage sets (delivery underway)
Number in service	67 3-car sets (May 2016)
Formation	3 carriage sets may be coupled to form either a 6 or 9-car set
Fleet numbers	049-126
Capacity	600 (standing 3-car) 1,100 (standing 6-car)
Operator(s)	Transperth
Depot(s)	Nowergup, Mandurah, Claisebrook
Line(s) served	Joondalup, Mandurah, Fremantle, Midland, and Armadale/Thornlie
Specifications
Train length	73 m (239 ft 6 in)
Width	2.9 m (9 ft 6 in)
Height	3.1 m (10 ft 2 in)
Maximum speed	130 km/h (81 mph) (160km/h design)
Weight	120 t (120 long tons; 130 short tons)
Traction system	Bombardier MITRAC Traction system with IGBT inverters powering 8 AC Traction Motors per 3-car set (Bo-Bo, 2-2, Bo-Bo)
Electric system(s)	25 kV AC overhead lines
Current collection method	Pantograph
Braking system(s)	Microprocessor controlled blended pneumatic & regenerative dynamic
Track gauge	1,067 mm (3 ft 6 in)

The B-series trains are a class of electric multiple unit built by Downer Rail, Maryborough for Transperth between 2004 and 2019

Perth's first electrified trains, the two-carriage A-Series, entered service in September 1991. The new three-carriage B-series were introduced on the 4 October 2004 as part of the New MetroRail project. Thirty-one B-series sets were purchased to operate on the new Joondalup and Mandurah lines. They are mainly based at Nowergup depot but are occasionally stored at Claisebrook Depot.

The B-series trains are cleared to operate on the Midland, Armadale/Thornlie and Fremantle lines and have been used occasionally during special events, and for scheduled services to Thornlie during a temporary timetable used in 2012 and 2013 to accommodate works on the Perth City Link project. However, not all stations on these lines are capable of handling six-car sets as the platforms are not long enough, and there are reported problems with the acceleration/deceleration systems with the closely spaced stations. Platforms at the original stations on the Joondalup Line had to be lengthened to accommodate the six-car trains, as did Platform 1 at Showgrounds and both platforms at West Leederville. The Mandurah line stations, along with Butler, Clarkson, Currambine and Greenwood on the Joondalup Line were built with longer platforms.