BVG Class HK

The BVG Class HK is a type of electric multiple unit in service on the Berlin U-Bahn. It is operated by Berliner Verkehrsbetriebe (BVG) (Berlin Transport Company).

BVG Class HK
A HK-type train
In service	2001–present
Manufacturer	ADtranz Bombardier Transportation
Built at	Hennigsdorf, Brandenburg, Germany
Constructed	1999–2006
Entered service	2001
Number built	24
Formation	4 per train set DT–M–M–DT
Fleet numbers	1001–1024
Capacity	296 seated; 1,624 standing; 2 PIW spaces
Operators	Berliner Verkehrsbetriebe
Lines served	U1 U2 & U3
Specifications
Car body construction	Aluminium-alloy double-skinned construction
Maximum speed	80 km/h (50 mph)
Weight	226.8t /335.9 t (laden)
Traction system	Bombardier MITRAC IGBT-VVVF
Power output	2.24 MW (3,000 hp)
Transmission	WN Drive
Acceleration	1.0 m/s2
Deceleration	1.2 m/s2 (service) 1.3 m/s2 (emergency)
Auxiliaries	IGBT–VVVF Auxiliary Inverter with Battery Charger 80 kVA–16 kW
Electric system(s)	750 V DC third rail
Current collection	Contact shoe
Braking system(s)	Regenerative Braking, Resistor Braking, Air Brakes
Track gauge	1,435 mm (4 ft 8+1⁄2 in) standard gauge

The HK is a Kleinprofil (small profile) variant of the larger Großprofil (large profile) H series.

Production history

In the early 2000s, Berliner Verkehrsbetriebe ordered twenty four-car small-profile HK class trains from Bombardier Transportation. Four pre-production trains underwent trial service for three years before being fully adopted. The completed trains were delivered to Berliner Verkehrsbetriebe between mid-2006 and the end of 2007.^[1] The vehicle bodies feature aluminum shells, with modular roof, cab, and underframe components. The power draw of the HK variant is 1,020 kW as compared to the larger H series 2,160 kW. ^[2]

Operational history

The HK series primarily operates on the U2 line.^{[citation needed]}