Henschel-BBC DE2500
The EN 2500 series of Henschel - BBC indicates a small series of three diesel-electric experimental locomotives, tentatively set up in the 1980s at the German Federal Railways as DB Class 202, the three-phase asynchronous traction motors are to be mentioned as a special feature, which one by one from diesel engine driven alternator are powered. The locomotives are modular and could be used on two-axle and three-axle bogies on ( for routes with lower axle load ).
Use
The three machines have been extensively tested in the 1970s by the German Federal Railways and regularly used by the Bw Mannheim. Their DB name was the 202 series with numbers
- 202002-2 ( white paint )
- 202003-0 ( red-orange paint )
- 202004-8 (blue paint )
The 202002-2 mid-1970s has been converted into an electric locomotive with pantographs for 1500 V DC, painted yellow and tested under the company number 1600P of the Dutch Railways. During these tests, it was only on a set of wheels with a traction motor fitted ( wheel arrangement (1A1 ) '3 '). Because a decision for locomotives of this type would have meant too long delivery time, they decided on a French of the series BB 7200 locomotive derived. This is the series 1600/1800 of the Dutch Railways (NS).
After return by DB at least one copy was temporarily leased to a private company.
Experimental vehicle " UmAn "
Early 1980s, were tested on the 202 003 high-speed bogies with umkoppelbarer drive mass ( " UmAn "). For them, the traction motors could be selectively coupled to the bogie frame or the main frame in order to draw lessons for the drive technology in high speed. The locomotive has been approved for speeds up to 250 km / h and it reached without problems in experimental runs. For this purpose, the gear ratio has been changed temporarily received the locomotive and on one side a provisional streamlined porch with windows of class 103 With a top speed test on a chassis dynamometer built by BBC in Munich - Freimann even 310 km / h were measured. This loco is now at the German Technology Museum in Berlin.
Aftereffect
From the perspective of the locomotive industry, which has built the three copies at their own expense, DE 2500 was mainly a test vehicle. Your technique of historical value is very great, because their design principles have largely shaped the modern locomotive technology.
Although a direct further construction in series resigned because the German Federal Railroad had a sufficient number of modern Streckendieselloks. However, in the construction of the three-phase electric locomotives they flowed, first for the series 120 The drive system of the UmAn -Lok with the flexible articulation of the axle box and the bogie by train - pressure rods was at the ICE DB series 410, 401 and 402 accepted. Modern diesel locomotive series ( for example, Hercules, Traxx ) also use the AC drive technology.
All locomotives have been preserved for posterity:
- 202002-2: placed outdoors in front of the Bombardier plant in Kassel, was converted into a conference room and the engine room so completely gutted
- 202003-0 German Museum of Technology Berlin
- 202004-8: Technoseum, Mannheim