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| BVG Class HK | |
|---|---|
 A HK-type train | |
| In service | 2001–present |
| Manufacturer | |
| 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 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
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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]
References
- ^ International Railway Journal: IRJ. Simmons-Boardman Publishing Corporation. 2004.
- ^ "Berlin U-Bahn Upgrading". Railway Technology. Retrieved 2025-10-15.
