Product Features and Details
Prototype: Fast multi-purpose locomotive class 120.1 of Deutsche Bahn AG (DB AG). Standard version. Operating number 120140-9. It did around 1995.
Model: With digital decoder and extensive sound functions. Controlled high efficiency propulsion. 4 axles powered. Traction tires. The headlights are maintenance-free, warm white LEDs. The triple headlights and dual red marker lights will work in conventional operation, can be controlled digitally. The headlights are maintenance-free warm white and red LEDs (LED). Cab lighting separately digitally. Driving cabs have interior details. Close couplers in standard recording with a guide mechanism. Separately applied handrails. Length over the buffers 22.1 cm.
The three-pioneer. The class 120 marked the technological change to three-phase drives. This principle promised compact largely wear-free motors without collectors, slip rings, brushes, and mechanical contacts. Because can dominate a broad torque and speed range with the three-phase technology, the specifications for this new development is drawn up wish list overbroad. The BR 120 is 200 km / h fast intercity trains and 5,400 t heavy freight trains pull, be also equipped with shuttle train controls and electric regenerative. The DB ordered five experimental units in 1977, which are thoroughly tested on test benches, with test drives and in operational use. Startup, tractive effort, acceleration, running characteristics, braking performance, energy consumption, stability are on the program. Comparative tests with other makes of locomotives as well as collision experiments at the Lötschberg and Semmering grades confirmed the efficiency of the technique. The speed record is 265 km / h. During the experimental phase developments are incorporated, for example, microprocessors for faster regulation. Again and again, the components can be improved until all five machines are brought to the same level in 1982 and technically maintain the production stage. During several years of development, however, the purchasing policy has changed. Instead of all-round locomotives were once again preferred Spezialloks based on common development platforms with many identical parts. Therefore only the first production run will be procured from 60 pieces of the BR 120th The prototypes continue to be used for testing, the series locomotives prove themselves until today in daily rail operations.
