BVG Class HK
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| BVG Class HK | |
|---|---|
 A HK-type train | |
| In service | 2001–present |
| Manufacturer | ADtranz, Bombardier Transportation |
| Built at | Hennigsdorf |
| Constructed | 1999–2006 |
| Entered service | 2001 |
| Number built | 24 |
| Formation | 4 per train set DT–M–M–DT |
| Fleet numbers | Protoype 1001–1004 1005–1024 |
| 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) |
| 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 collector(s) | 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. The main difference is that while a H-series set has walkway connections between all its carriages, the HK 4-car series only has two connections between the first and second, and third and fourth cars - each set can be divided into two 2-car trains.
Production history
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Operational history
The HK series primarily operates on the U2 line.[citation needed]