DB class 424

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DB class 424/434
DB class 424/434
DB class 424/434
Numbering: 001 / 501-040 / 540
Number: 40 units
Manufacturer: Adtranz / Bombardier , Siemens
Year of construction (s): 1999-2000
Axis formula : Bo '(Bo') (2 ') (Bo') Bo '
(two cars each)
Gauge : 1435 mm ( standard gauge )
Length over coupling: 67,500 mm
Height: 3,750 mm
Width: 2,840 mm
Trunnion Distance: 15,370 mm ( bogie 1–2 / 4–5)
15,505 mm (bogie 2–3–4)
Bogie axle base: 2,200 mm (end turn)
2,700 mm
Empty mass: 114.0 t
Service mass: 137.0 t
Top speed: 140 km / h
Hourly output : 2350 kW
Starting tractive effort: 150 kN
Acceleration: 1.0 m / s²
Braking delay: 140 kN
Driving wheel diameter: 850 mm / 780 mm
Impeller diameter: 850/780 mm
Motor type: 1TB1724 0GA02
Power system : 15 kV 16.7 Hz AC
Power transmission: Overhead line
Coupling type: Scharfenberg coupling type 10
Seats: 206
Standing room: 246
Floor height: 798 mm

The electric motor coaches of the series 424 were for the DB Regio operated Hanover S-Bahn designed and are only deployed there.

technology

The 424 series is identical to the 425 series . The differences to the first 425 series are:

  • Stepless entry with extendable step to bridge gaps
  • no wheelchair lift available, as not required
  • the drive monitoring in the 425 was not implemented in the 424, so the 424 is only allowed to drive 140 km / h, even when guided by an LZB .
Class 424 driver's cab

The 425 series of the second, fourth and fifth series also received the entrances with an extendable step, but were not designated as 424. Like the 425, the 424 consists of four segments, led by the end railcar 1 with the series designation 424.0, the two middle railcars 2 and 3 with the designations 434.0 and 434.5 and the end railcar 4 with the series designation 424.5. The car bodies rest on five bogies , two of which are end bogies and three Jakobs bogies , whereby the middle bogie is neither driven nor braked. The vehicles of the 424 series can not only be coupled to each other, but can also be combined to form mixed multiple units with 425 and 426. A maximum of four multiple units can be coupled. A handicapped accessible toilet is installed in the end railcar 1.

In contrast to older S-Bahn systems, the vehicle has a floor height of only 798 mm and thus offers almost the same height and, with the extendable steps, barrier-free access to 760 mm high standard platforms . The outwardly similar, but technically completely different, S-Bahn series 423 is tailored to the higher platforms in older S-Bahn networks. The vehicles of the 424/434 series (like the 425 series) have two double pivoting sliding doors per car body and side, while the 423 series has three doors per car body and side.

After the DB Regio had been commissioned with the management of the S-Bahn again after the tendering for the S-Bahn services, the 2010/11 vehicles were given replacement seats with thicker seat padding.

commitment

The vehicles were supposed to go into operation at the same time as the new Hanover S-Bahn network went into operation in 2000, but this was prevented by technical problems. The transformers suspended under the car body were not adequately shielded and caused malfunctions in the signal and safety technology on the network side . During EXPO 2000 , vehicles of the 423 series borrowed from the S-Bahn in Munich and Stuttgart were used instead of the 424 series . After the problems had been resolved, the 424 series vehicles were used after the expo. At major events such as the Hanover Fair, rental vehicles from the 425 series from other regions are used as reinforcement .

Later, the vehicle inventory of the Hanover S-Bahn was supplemented by six vehicles from the sub-series 425.15 , which were equipped for use on the S 5 to Paderborn with partially low platforms with variable steps. In 2008, another 13 multiple units of the class 425.5 of the fifth series (with gap bridging) were added for the expansion of the S-Bahn to Hildesheim.

S-Bahn railcar 424 037 named after the city of Langenhagen

Since 2003, some vehicles have been named after cities / municipalities in the Hanover S-Bahn network. So far, 22 multiple units bear the coat of arms and the name of a municipality at both ends:

literature

  • Martin Pabst: U- and S-Bahn vehicles in Germany . 1st edition, GeraMond Verlag, Munich 2000, ISBN 3-932785-18-5
  • Daniel Riechers: S-Bahn multiple units - New vehicles for Germany's urban express traffic . 1st edition 2000, transpress Verlag, Stuttgart 2000, ISBN 3-613-71128-1

Web links

Commons : DB Class 424  - Collection of Pictures, Videos and Audio Files