Technical Data
Each unit consisted of two cars: engine car and trailer. It was possible to connect four units in order to gain eight car train. GBM-700 type electric engines used in EW90, EW91 and EW92 units have 4 main poles and 4 commutation poles. Two-step reduction of engine excitation (up to 50%)is made by short-circuit of parts of main poles. Engines cooling is made with a fan installed on engines' shafts.
Read more about this topic: PKP Class EW90
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