Double-leaf sliding plug, 2 per side per end section
Articulated sections
3
Wheel diameter
720 mm (28 in)
Maximum speed
62 mph (100 km/h)
Weight
Approx. 66 t (65 LT; 73 ST)
Steep gradient
10%
Traction system
ABB IGBT-VVVF[1]
Traction motors
6 × 145 kW (194 hp)
Power output
870 kW (1,170 hp)
Acceleration
1.15 m/s2 (2.6 mph/s)
Deceleration
Service: 1.2 m/s2 (2.7 mph/s)
Emergency: 2.67 m/s2 (6.0 mph/s)
Electric system(s)
750 V DC and 25 kV 50 Hz ACoverhead line
Current collector(s)
Pantograph
UIC classification
Bo′+2′Bo′+Bo′
Minimum turning radius
Horizontal: 22 m (72 ft 2 in)
Vertical: 165 m (541 ft 4 in)
Safety system(s)
AWS
TPWS
Track gauge
1,435 mm (4 ft 8+1⁄2 in) standard gauge
Notes/references
Sourced from [2][3] unless otherwise noted.
The British Rail Class 399 Citylink is a type of rail vehicle built by Vossloh on its Citylink platform for operation by Sheffield Supertram. Primarily a low-floor tram, it is also capable of being used on the National Rail network; the Class 399 is the first such tram-train to see operational use in the United Kingdom.
In 2013, an order was placed with Vossloh for the construction of a batch of seven tram-trains for Supertram. It operates as a pioneering tram-train hybrid vehicle as part of an initial pilot of the operation of such vehicles.[4] The launch of live services using the Class 399 was repeatedly delayed, reportedly due to planning and development-related difficulty experienced by Network Rail, who were responsible for the installation of additional track and other infrastructure-related changes to accommodate the tram-trains upon the heavy rail network, as well as a necessary full track replacement programme performed by Supertram.
In January 2016, the first tram-train commenced live testing on the Supertram network. The type first entered passenger service on 14 September 2017, but were initially restricted to only some sections of Supertram's network as further work was still required on other parts, including Network Rail lines. Full tram-train service began on 25 October 2018. The results of the trials may become a decisive factor on the adoption of tram-train technology at various other sites across the country.
^Compact Converter BORDLINE CC400 MS(PDF). Turgi: ABB Switzerland. 16 February 2018. 3BHS262329 Rev C.
^Citylink Tram Train(PDF). Bussnang: Stadler Rail Group. June 2016. TTSYPTE0616e.
^Citylink Dual-Voltage Tram-Train Sheffield(PDF). Albuixech: Vossloh España. June 2013. Archived from the original (PDF) on 5 March 2016.
^"UK approves Tram Train pilot for South Yorkshire". RailwayTechnology. Net Resources International. 21 May 2012. Retrieved 20 February 2015.
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