CPC G01R 15/04 (2013.01) [B60L 3/12 (2013.01); G01R 21/06 (2013.01); G01R 31/008 (2013.01); B60L 2200/26 (2013.01)] | 7 Claims |
1. A device for measuring the electric power delivered to a railway vehicle by a high voltage electric supply line, the device comprising:
a resistive voltage divider connected operationally in parallel between the supply line and an electric grounding terminal, and
a processor connected to the output of the voltage divider and configured to generate signals or data indicating the voltage of the supply line,
wherein the resistive voltage divider comprises a plurality of voltage dividers connected operationally to the supply line and forming separate respective connection paths to the electrical grounding terminal so that each of the plurality of voltage dividers operates independently,
wherein the processor comprises a plurality of separate processing modules each one coupled to a respective one of the connection paths and configured to generate respective signals or data indicating the voltage of the supply line, and
wherein the voltage divider is arranged in a cavity inside a line insulator and the terminal with the lowest potential of each voltage divider is arranged at a predetermined distance from a body made of electrically conductive material, arranged at a lower end of the insulator and outside the cavity of the insulator, which body is adapted to be operatively connected to ground and in which body there are arranged the processor to form therewith respective separate dischargers capable of generating an electric discharge when the voltage across at least one of the dischargers exceeds a predetermined value.
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