BVG Class HK

BVG Class HK
BVG Class HK
	A HK-type train
Stock type	Kleinprofil
In service	2001–present
Manufacturer	Adtranz/Bombardier Transportation
Built at	Hennigsdorf, Oberhavel, Brandenburg
Constructed	1999–2006
Entered service	2001
Number built	24
Formation	4 per train set; DM–M–M–DM
Fleet numbers	1001–1024
Capacity	296 seated; 1,624 standing; 2 PIW spaces
Operator	Berliner Verkehrsbetriebe
Lines served	U1 U2 & U3
Specifications
Car body construction	Aluminium-alloy double-skinned construction
Train length	51.59 m (169 ft 3 in)
Car length	12.63 m (41 ft 5 in); 13,165 mm (43 ft 2.3 in) (end cars);
Width	2.3 m (7 ft 7 in)
Height	3.17 m (10 ft 5 in)
Maximum speed	80 km/h (50 mph)
Weight	226.8 t (223.2 long tons; 250.0 short tons); 335.9 t (330.6 long tons; 370.3 short tons) (laden);
Traction system	Siemens IGBT–VVVF
Traction motors	12 × Siemens 1TB1619-0JC03 85 kW (114 hp) asynchronous 3-phase AC
Power output	1.02 MW (1,370 hp)
Transmission	WN Drive
Gear ratio	7.329 : 1
Acceleration	1 m/s2 (3.3 ft/s2)
Deceleration	1.2 m/s2 (3.9 ft/s2) (service); 1.3 m/s2 (4.3 ft/s2) (emergency);
Auxiliaries	IGBT Auxiliary Inverter with Battery Charger; 80 kVA–16 kW
Electric systems	750 V DC third rail
Current collection	Contact shoe
UIC classification	Bo′(A1)+(1A)Bo′+Bo′(A1)+(1A)Bo′
Braking systems	Regenerative, dynamic and electro-pneumatic
Track gauge	1,435 mm (4 ft 8+1⁄2 in) standard gauge
Notes/references

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).

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 Adtranz (merged into Bombardier Transportation during production). 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.^[2] 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. ^[3]

Operational history

The HK series primarily operates on the U2 line.

References

^ Vier-Wagen-Zug der U-Bahn Baureihe HK für de Berliner Verkehrsbetriebe BVG (in German). Siemens Aktiengesellschaft.
^ International Railway Journal: IRJ. Simmons-Boardman Publishing Corporation. 2004.
^ "Berlin U-Bahn Upgrading". Railway Technology. Retrieved 2025-10-15.

[1] Vier-Wagen-Zug der U-Bahn Baureihe HK für de Berliner Verkehrsbetriebe BVG (in German). Siemens Aktiengesellschaft.

[2] International Railway Journal: IRJ. Simmons-Boardman Publishing Corporation. 2004.

[3] "Berlin U-Bahn Upgrading". Railway Technology. Retrieved 2025-10-15.

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