A study on relationship between contact temperature and bridge shape at low speed breaking contact

Kazuaki Miyanaga, Yoshiki Kayano, Tasuku Takagi, Hiroshi Inoue

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    Abstract

    In this paper, in order to clarify the effects of heating value and thermal diffusivity on the bridge generation changing with time for making the highly reliable contact, the bridge was observed by the microscope with high-speed camera on the breaking contact. The effects of heating value and thermal diffusivity on diameter and length of bridge changing with time were discussed. In the result, the bridge grew up with diameter increase when the contact temperature rose. The shape of the bridge also changed additionally. However, the bridge broke because the length of the bridge became long. As the value of the current increased from 1.8A to 3.6A, the bridge length and diameter become long. Therefore, it was demonstrated that the bridge for material with high thermal diffusivity is not able to be continued even if the heating value increases.

    Original languageEnglish
    Title of host publicationProceedings of the 3rd International Conference on Reliability of Electrical Products and Electrical Contacts, ICREPEC 2009
    EditorsJingying Zhao, Jingqin Wang
    PublisherInternational Academic Publishers
    Pages58-62
    Number of pages5
    ISBN (Electronic)9789889968489
    Publication statusPublished - 2009
    Event3rd International Conference on Reliability of Electrical Products and Electrical Contacts, ICREPEC 2009 - Wenzhou, China
    Duration: 2009 Oct 182009 Oct 21

    Publication series

    NameProceedings of the 3rd International Conference on Reliability of Electrical Products and Electrical Contacts, ICREPEC 2009

    Conference

    Conference3rd International Conference on Reliability of Electrical Products and Electrical Contacts, ICREPEC 2009
    Country/TerritoryChina
    CityWenzhou
    Period09/10/1809/10/21

    Keywords

    • Electrical contacts
    • Shape of bridge
    • Slowly breaking
    • Temperature rise

    ASJC Scopus subject areas

    • Electrical and Electronic Engineering
    • Safety, Risk, Reliability and Quality

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