The paper presents three persistent-current switches which were developed for superconducting coils on Maglev vehicles. Superconducting wire is used for the switches whose electric resistances are 100 ohms off-state (normal state), and current capacities are over 600A on-state (superconducting state) in a magnetic field of 1.5T. They are constructed of ten slender switch elements connected in parallel. Test results show that two of the switches can pass a current of 700A without quenching under conditions such as momentary spring vibrations or even if one of the ten switch elements is heated by the manganin wire heater.


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    Title :

    Development of Persistent-Current Switches for Superconducting Coils on Maglev Vehicles


    Contributors:
    K. Nemoto (author)

    Publication date :

    1990


    Size :

    6 pages


    Type of media :

    Report


    Type of material :

    No indication


    Language :

    English




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