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Prussian ES 1 to ES 3
German Reichsbahn E 00
Germany | 1911 | 3 produced
ES 2 on an AEG works photo
ES 2 on an AEG works photo

These were three electric locomotives with which the Prussian-Hessian State Railways tested the new type of traction for use in front of express trains since 1911. The requirements for the test locomotives were a continuous output of 700 kW and a speed of 100 km/h with a few express cars on the hook. For the purpose of comparability, all three received the chassis and body from Hanomag, while the electrical part of the ES 1, ES 2 and ES 3 came from Siemens-Schuckert, AEG and Bergmann respectively. The wheel arrangement was 2-B-1 and therefore asymmetrical, although the vehicles were bidirectional.

The ES 1 was designed for 110 km/h, but could reach up to 135 km/h with the bogie in front. Although the continuous output did not reach the required 700 kW, it was able to pull a 240-tonne train at a constant speed of 100 km/h. The ES 2 nominally had a slightly lower maximum and continuous power, but was able to achieve a higher tractive effort. Compared to the first two, the ES 3 had a significantly higher power and had a wooden structure, but could not convince due to persistent problems in the electrics.

The test drives with the three locomotives took place on the Dessau-Bitterfeld route, which was one of the first with the 15 kV and 16⅔ Hz power system, which is the most widespread in German-speaking countries today. They continued until the outbreak of World War I in 1914. The ES 2 was the only one of the three locomotives that was able to make it to the Reichsbahn and was in service on the Wehratalbahn for a few years. There it was designated E 00 to illustrate the pioneering role of the Prussians in electric traction.

VariantES 1ES 2ES 3
General
Built1911
Manufacturermechanical part: Hanomag, electrical part: SSWmechanical part: Hanomag, electrical part: AEGmechanical part: Hanomag, electrical part: Bergmann
Axle config2-B-1 
Gauge4 ft 8 1/2 in (Standard gauge)
Dimensions and Weights
Length41 ft 0 1/8 in
Total wheelbase29 ft 6 5/16 in
Service weight156,528 lbs162,040 lbs
Adhesive weight70,548 lbs72,312 lbs
Axle load35,274 lbs36,156 lbs
Power
Power sourceelectric - AC
Electric system15.000 V 16⅔ Hz
Hourly power986 hp (735 kW)888 hp (662 kW)1,475 hp (1,100 kW)
Continuous power715 hp (533 kW)617 hp (460 kW)1,033 hp (770 kW)
Top speed68 mph75 mph
Starting effort17,760 lbf20,907 lbf31,923 lbf
Power Plant
Boiler
Calculated Values
electric locomotive
prototype
express
rod drive
last changed: 02/2022
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