EXPERIMENTAL MECHANICAL SWITCH FOR 3 kA DRIVEN BY SUPERCONDUCTING COILS.

Herman H J ten Kate*, Bennie ten Haken, Louis J M van de Klundert

*Corresponding author for this work

    Research output: Chapter in Book/Report/Conference proceedingConference contributionAcademicpeer-review

    4 Citations (Scopus)

    Abstract

    Usually mechanical switches that are built for use in superconducting circuits are driven in some way by a rod which is controlled at room temperature. In this paper, an alternative method to drive the electrodes of the switch is reported. In fact the new device is a superconducting relay that uses an antiseries connection of two superconducting air-core coils. The repulsing force of these relay coils enables the switch to be closed by applying a pressure to the electrodes. The off-state is effected by a set of springs which interrupt the electrodes when the coil current is switched off. We realized that this electro-magnetic method of producing large forces could be promising for driving a mechanical switch. The desired method was demonstrated by an experimental model. A switch-on resistance of 8 multiplied by 10** minus **8 OMEGA with a switch current of 3 kA and a contact force of 20 kN was measured.

    Original languageEnglish
    Title of host publicationAdvances in Cryogenic Engineering
    PublisherPlenum
    Pages243-249
    Number of pages7
    ISBN (Print)0306422913
    Publication statusPublished - 1 Dec 1986

    Publication series

    NameAdvances in Cryogenic Engineering
    Volume31
    ISSN (Print)0065-2482

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