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Leung et al., 2007 - Google Patents

Weibull analysis of switching contact resistance in laboratory and commercial circuit breakers

Leung et al., 2007

Document ID
409511335398688738
Author
Leung C
Streicher E
Fitzgerald D
Publication year
Publication venue
Electrical Contacts-2007 Proceedings of the 53rd IEEE Holm Conference on Electrical Contacts

External Links

Snippet

Silver/tungsten powder metal electric contacts are used in circuit breakers because of their combination of high conductivity from silver, and high melting temperature from tungsten. In operations of the circuit breaker, switching arcs erode and oxidize the contact surface to …
Continue reading at ieeexplore.ieee.org (other versions)

Classifications

    • H—ELECTRICITY
    • H01—BASIC ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/02—Contacts characterised by the material thereof
    • H01H1/021—Composite materials
    • H01H1/023—Composite materials having a noble metal as the basic material
    • H01H1/0237—Composite materials having a noble metal as the basic material and containing oxides
    • H01H2001/02378—Composite materials having a noble metal as the basic material and containing oxides containing iron-oxide as major component
    • H—ELECTRICITY
    • H01—BASIC ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/02—Contacts characterised by the material thereof
    • H01H1/021—Composite materials
    • H01H1/027—Composite materials containing carbon particels or fibers
    • H—ELECTRICITY
    • H01—BASIC ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/02—Contacts characterised by the material thereof
    • H01H1/0203—Contacts characterised by the material thereof specially adapted for vacuum switches
    • H—ELECTRICITY
    • H01—BASIC ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H11/00—Apparatus or processes specially adapted for manufacture of electric switches
    • H01H11/04—Apparatus or processes specially adapted for manufacture of electric switches of switch contacts
    • H01H11/048—Apparatus or processes specially adapted for manufacture of electric switches of switch contacts by powder-metallurgical processes
    • H—ELECTRICITY
    • H01—BASIC ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/0015—Means for testing or for inspecting contacts, e.g. wear indicator
    • H—ELECTRICITY
    • H01—BASIC ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/12—Contacts characterised by the manner in which co-operating contacts engage
    • H01H1/36—Contacts characterised by the manner in which co-operating contacts engage by sliding
    • H—ELECTRICITY
    • H01—BASIC ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/12—Contacts characterised by the manner in which co-operating contacts engage
    • H01H1/14—Contacts characterised by the manner in which co-operating contacts engage by abutting

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