The series 425 and 426 of the consortium Siemens/Bombardier/DWA are easy electrical arranging rubbing courses from the same family as the series 423 and 424. The ET 425 is fourth-hasty during the ET 426 two-piece is. The serial numbers 425 and 426 were already used before by the German Federal Railroads for ET 25 and ET 26.

Concept

The car boxes are welded in self-supporting building method from aluminum extruded sections. In order to keep the outer skin as smooth and free as possible from construction dependent collections to, are the disks, which frameworks and the box sticks together among themselves concisely. This improves the aerodynamics and provides above all also with automatic cleaning for a clean external picture. The disks are thereby thermal windows from two-part laminated glass.

Following the series 420 the length with approximately 70 m was specified. Differently than the of the series 420 those should be the series 425 in full length accessible and surveyable; they are partitioned only by a In order to realize the demanded large free passages between the cars, the vehicle was planned as fourth-hasty arranging rubbing course with Kurzkupplungen and Jakob rotary stands at the car transitions, what minimizes the movements and distances of the car boxes to each other.

The vehicle is divided thereby in two course halves, which are to a large extent similarly developed. Everyone of them is in each case provided with course expensive equipment, a transformer to 1.2 MVA, a drive static inverter, an electrical system supply, a compressed air brake equipment with a brake controller as well as a radio communication system, in former times Mesa now 2002 GSM-R. The vehicles already delivered are equipped after a solution of the railways AG with a GSM R plant, with set off operating sector for the second flight compartment. Again two plants with one operating sector each are inserted by the manufacturer. The remaining installations distribute themselves:

• Car 1 contains the obstruct-fair vacuum WC and the LZB,
• Car 2 the current collector and the main switches,
• Car 3 the Luftpresser and
• Car 4 the thermal subject for the engine driver and the computer of the passenger information system.

The drive static inverters realize three-phase alternating current drive with brake current back supply over four drive motors in the final rotary stands and the outside two Jakob rotary stands. The middle run rotary stand is neither propelled nor braked.

In order to realize from most places of work of demanded wing concepts the course lengths adapted with the passenger arising to, automatic sharp mountain clutches were inserted. The series 424 to 426 are among themselves freely domable. Also 420er and 423 can be coupled, however only mechanically and not electrically, which limits the use nearly completely to towing remained lying vehicles.

The motor coach is in contrast to the series 424 at different platform heights applicable and therefore with four wheelchair stroke elevators equipped. Eight electrical douple swing swiveling sliding doors per side permit quick passenger changes; in order to make the technology-based dispatching procedure possible TAV, they provided with light barriers and clamping protection as well as emergency call substations are.

Pilot's compartments and cars are air-conditioned, whereby as with the ICE the interior is not adjusted to 20"°C, but 23"°C are given and more to the outside temperature are followed.

Course blips at the fronts and the sides, a passenger information system with announcement of line, last stop and next stop as well as an automatic announcement of next stop and transfer possibilities provide for information. The automatic announcement took place originally as with the series 423 few meters after the departure, however in the meantime on an announcement before reaching the next stop is briefly reequipped.

Operational

In light traffic periods a course half can be locked to e.g. make smaller or distribute in order the cleaning. This is usually not used however and is not developed in some vehicles the from the partition.

The courses were conceived for continuous operation; they are not disarmed, but are not placed with a rest break into the period of instruction for the next service layer. In this operating condition the air conditioning system provides for freeze protection. The course implements parts of the period of instruction automatically. Thus the brake sample is settled and the course is cooled dependent on the outside temperature before the departure time pre-heatedly or.

If an error arises, over Zugfunk a warning is given to the production management.

Passenger interests

The equipment of the motor coaches 425 and 426 is criticized again and again by passengers, in particular for longer travels very hard seat with steep moving and without arm rests. Further points of criticism are the noise (pointed name "Quietschie ") and the toilet, which are frequently defective or become unbenutzbar by a defective toilet door. The protests of the passenger federation PRO COURSE which are based on a user inquiry led in Bavaria to a of some vehicles. A similar passenger inquiry was accomplished also in North Rhine-Westphalia by PRO COURSE. Here railways Regio begin on the RB 42 vehicles with converted interior.

Due to customer complaints the railways Regio Bavaria took the BR425 off from the distance Munich in the middle forest and Munich Murnau and drive there again with modernized locomotive-covered Silberlingen. The BR 425 drives now stattdesen in the area Augsburg, RB from Augsburg to Ulm, RH from Augsburg to Treuchtlingen and RB from Augsburg to That is according to course speaker Lindemayr an advance enterprise for planned Augsburger rapid-transit railway net.

Underbody rows

425.2

The second series 425,2 are used on all lines of the rapid-transit railway RheinNeckar. In contrast to the original 425er-Modell it does not have LZB, for it however more comfortable seats. Also the floor height with only 780 mm is slightly lower and so stepless entrance over a folding ride possible. The gap between platform and vehicle is likewise narrower, for wheelchair users can it at the first door behind the flight compartment by a manually extendable sheet metal be bridged completely. The stroke elevators of the first series are not necessary therefore.

For the rapid-transit railway Hanover 13 motor coaches are to be procured, which are to be used starting from 2008.

425.4

The fourth series 425,4 were purchased for the regional course/regional express enterprise and drive on among other things the distance R4 (Karlsruhe - Ludwigshafen - Worms - Mainz and/or Mannheim - Worms - Mainz).

426

For distances with weaker passenger arising and for the reinforcement meeting demand of 425ern the two-piece series 426 were procured. This course consists only of two final cars and is only 35 m long. Its appearance (briefly, red and rectangular with "handle" in the center) registered the pointed name to it. With these vehicles the problem of the up-swinging railway catenary steps itself to day in the rule enterprise: If 3 or 4 vehicles are coupled driven, then their maximum speed must be limited, because the current collector distances are too short. The railway catenary forms a speed-dependent wave, with which the middle or last current collector can lose the contact.

Articles in category "DBAG series 425"

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