In rail transit, the running rails are used as the return path for dc propulsion currents and also are used as the conductors for train detection and signaling systems. Spurious ac currents often occur at substation harmonic frequencies or harmonics of the chopper propulsion controllers on cars. These currents, called conductive interference (CI), can interfere with the operation of signaling systems. This paper summarizes the results of a comprehensive program whose purpose was to delineate all aspects of the problem of CI in rail transitit systems and achieve as thorough an understanding of the problem as possible. This program has been undertaken as a cooperative venture of U.S. rail transit manufacturers and operators, researchers, and consultants, under the aegis of the Rail Transit EMI/EMC Technical Working Group, sponsored by the Urban Mass Transit Administration, U.S. Dept. of Transportation. This organization has developed a series of recommended practices for characterizing CI, inductive interference, and their effects.


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    Title :

    The model of conductive interference in rapid transit signaling systems


    Additional title:

    Ein elektrisches Zug-Schiene-Modell zur Bestimmung von Signalform und Signalerkennung beim Informationsfluss vom und zum fahrenden Zug


    Contributors:


    Publication date :

    1985


    Size :

    8 Seiten, 20 Bilder, 1 Tabelle, 14 Quellen


    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English