Overvoltage protection concept for DC railway systems |
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Institution: | 1. Department of Engineering Sciences, Division of Electricity and Lightning Research, The Angstrom Laboratory, 751 21 Uppsala, Sweden;2. Department of Electrical Engineering, University of Bologna, Bologna, Italy;3. Power Systems Laboratory, Swiss Federal Institute of Technology, 1015 Lausanne, Switzerland |
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Abstract: | Protection concepts for DC railway systems are introduced, considering the different insulation of the rails and the earthing concepts. The requirements and ratings for gapless MO-surge arresters (or short: arresters) are based on the relevant EN standards and national guidelines. A newly developed hybrid voltage limiter, which combines overvoltage protection and the protection against dangerous touch voltages, is introduced. |
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