AC voltage adaptation: transformer
Electrical engineering components for rail traction

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D5530 V1 Article

AC voltage adaptation: transformer
Electrical engineering components for rail traction

Authors : Pierre CHAPAS, Marc DEBRUYNE

Publication date: November 10, 2004 | Lire en français

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4. AC voltage adaptation: transformer

4.1 Transformers and chokes

Under single-phase catenary, the transformer lowers the voltage – 25 kV (50 or 60 Hz) or 15 kV (16.7 Hz) – to a level suitable for traction motor operation: from 1,500 to 2,000 V.

We won't go into its well-known principle [D 3 050] , but in rail traction, the transformer poses a twofold problem of dimensions and mass. As it is practically impossible to give it the same characteristics, all other things being...

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