GB2356975B - Improvements relating to vacuum switching device electrodes and devices incorporating them - Google Patents

Improvements relating to vacuum switching device electrodes and devices incorporating them

Info

Publication number
GB2356975B
GB2356975B GB9928405A GB9928405A GB2356975B GB 2356975 B GB2356975 B GB 2356975B GB 9928405 A GB9928405 A GB 9928405A GB 9928405 A GB9928405 A GB 9928405A GB 2356975 B GB2356975 B GB 2356975B
Authority
GB
United Kingdom
Prior art keywords
switching device
improvements relating
device electrodes
devices incorporating
vacuum switching
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
GB9928405A
Other versions
GB2356975A (en
GB9928405D0 (en
Inventor
Rama Shankar Parashar
Bernard Leo Ennis
Leslie Thomas Falkingham
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Alstom SA
Original Assignee
Alstom SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Alstom SA filed Critical Alstom SA
Priority to GB9928405A priority Critical patent/GB2356975B/en
Publication of GB9928405D0 publication Critical patent/GB9928405D0/en
Publication of GB2356975A publication Critical patent/GB2356975A/en
Application granted granted Critical
Publication of GB2356975B publication Critical patent/GB2356975B/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—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
    • H01H1/0206—Contacts characterised by the material thereof specially adapted for vacuum switches containing as major components Cu and Cr
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
    • H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
    • H01H33/66—Vacuum switches
    • H01H33/664—Contacts; Arc-extinguishing means, e.g. arcing rings
    • H01H33/6642—Contacts; Arc-extinguishing means, e.g. arcing rings having cup-shaped contacts, the cylindrical wall of which being provided with inclined slits to form a coil
GB9928405A 1999-12-02 1999-12-02 Improvements relating to vacuum switching device electrodes and devices incorporating them Expired - Fee Related GB2356975B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB9928405A GB2356975B (en) 1999-12-02 1999-12-02 Improvements relating to vacuum switching device electrodes and devices incorporating them

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB9928405A GB2356975B (en) 1999-12-02 1999-12-02 Improvements relating to vacuum switching device electrodes and devices incorporating them

Publications (3)

Publication Number Publication Date
GB9928405D0 GB9928405D0 (en) 2000-01-26
GB2356975A GB2356975A (en) 2001-06-06
GB2356975B true GB2356975B (en) 2002-03-20

Family

ID=10865513

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9928405A Expired - Fee Related GB2356975B (en) 1999-12-02 1999-12-02 Improvements relating to vacuum switching device electrodes and devices incorporating them

Country Status (1)

Country Link
GB (1) GB2356975B (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1194674A (en) * 1966-05-27 1970-06-10 English Electric Co Ltd Vacuum Type Electric Circuit Interrupting Devices
US4892986A (en) * 1983-02-09 1990-01-09 Hitachi, Ltd. Vacuum circuit breaker
GB2251127A (en) * 1990-11-19 1992-06-24 Westinghouse Electric Corp Vacuum circuit interrupter contacts and sheilds

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1194674A (en) * 1966-05-27 1970-06-10 English Electric Co Ltd Vacuum Type Electric Circuit Interrupting Devices
US4892986A (en) * 1983-02-09 1990-01-09 Hitachi, Ltd. Vacuum circuit breaker
GB2251127A (en) * 1990-11-19 1992-06-24 Westinghouse Electric Corp Vacuum circuit interrupter contacts and sheilds

Also Published As

Publication number Publication date
GB2356975A (en) 2001-06-06
GB9928405D0 (en) 2000-01-26

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 20051202