The Bureau of Mines sponsored development of a system to remotely energize and deenergize the trolley wire in a section in response to demands from vehicles as they enter and leave the controlled section. The system developed uses a detector-actuator that controls a dc contactor at the outby end, and a 3-kHz oscillator at the inby end. A prototype system has been built and installed at the Bureau's trolley test site at Bruceton, PA., that has demonstrated the ability to also provide load discrimination for faults of 300 amperes or more. The system could readily be modified by locating the oscillator on the vehicle to provide automatic deenergizing of the trolley wire when the vehicle's pole is removed or the vehicle leaves the section.


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    Title :

    Development of Fail Safe Trolley Energizing/De-Energizing System


    Contributors:
    D. S. Kimmel (author) / A. B. Shimp (author) / D. A. Paice (author) / R. P. Putkovich (author)

    Publication date :

    1978


    Size :

    44 pages


    Type of media :

    Report


    Type of material :

    No indication


    Language :

    English




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