GB1238515A - - Google Patents

Info

Publication number
GB1238515A
GB1238515A GB1238515DA GB1238515A GB 1238515 A GB1238515 A GB 1238515A GB 1238515D A GB1238515D A GB 1238515DA GB 1238515 A GB1238515 A GB 1238515A
Authority
GB
United Kingdom
Prior art keywords
chamber
oct
applying
spark gap
contact
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
Application number
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 filed Critical
Publication of GB1238515A publication Critical patent/GB1238515A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • H01H33/668—Means for obtaining or monitoring the vacuum
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L21/00—Vacuum gauges
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/327—Testing of circuit interrupters, switches or circuit-breakers
    • G01R31/3271—Testing of circuit interrupters, switches or circuit-breakers of high voltage or medium voltage devices
    • G01R31/3272—Apparatus, systems or circuits therefor
    • G01R31/3274—Details related to measuring, e.g. sensing, displaying or computing; Measuring of variables related to the contact pieces, e.g. wear, position or resistance

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Measuring Fluid Pressure (AREA)
  • Measurement Of Radiation (AREA)

Abstract

1,238,515. Testing contact and spark gap chambers. ENGLISH ELECTRIC CO. Ltd. Oct. 15, 1969 [Oct. 15, 1968], No.48726/68. Heading G1U. The pressure of the residual gas in an evacuated contact 15, 16 or spark gap chamber bounded by a cylindrical glass or ceramic casing 12 and metal end plates 13, 14, is determined by applying a longitudinal magnetic field, e.g. by a coil 31 or by a permanent magnet not shown, to the chamber, by applying a high voltage, e.g. 4kv, to the spaced electrodes, and by measuring 30 the resulting current. The current may take as long as a minute to build up, and it may require the assistance of radioactivity from a source of the order of 10 to 20 millicuries. The chamber 12 includes an isolated metal cylinder 23, 26 to protect its walls, cylinders 24 and 25 connected to respective electrodes 15, 16, and a further cylindrical casing 28 surrounding a bellows 21.
GB1238515D 1968-10-15 1968-10-15 Expired GB1238515A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB4872668 1968-10-15

Publications (1)

Publication Number Publication Date
GB1238515A true GB1238515A (en) 1971-07-07

Family

ID=10449693

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1238515D Expired GB1238515A (en) 1968-10-15 1968-10-15

Country Status (1)

Country Link
GB (1) GB1238515A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0040918A1 (en) * 1980-05-27 1981-12-02 Kabushiki Kaisha Meidensha A vacuum circuit interrupter with a pressure monitoring system
US4510441A (en) * 1981-06-12 1985-04-09 Kabushiki Kaishi Meidensha Electric field detector
GB2203559A (en) * 1987-04-08 1988-10-19 Vacuum Interrupters Testing of vacuum interrupters
WO2008053329A2 (en) * 2006-11-01 2008-05-08 Eaton Corporation Automated arc generator and method to repeatably generate electrical arcs for afci testing
EP2830078A1 (en) * 2013-07-26 2015-01-28 ABB Technology AG Method to determine the pressure inside of a vacuum interrupter, and vacuum interrupter itself

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0040918A1 (en) * 1980-05-27 1981-12-02 Kabushiki Kaisha Meidensha A vacuum circuit interrupter with a pressure monitoring system
US4510441A (en) * 1981-06-12 1985-04-09 Kabushiki Kaishi Meidensha Electric field detector
GB2203559A (en) * 1987-04-08 1988-10-19 Vacuum Interrupters Testing of vacuum interrupters
WO2008053329A2 (en) * 2006-11-01 2008-05-08 Eaton Corporation Automated arc generator and method to repeatably generate electrical arcs for afci testing
WO2008053329A3 (en) * 2006-11-01 2008-08-21 Eaton Corp Automated arc generator and method to repeatably generate electrical arcs for afci testing
EP2830078A1 (en) * 2013-07-26 2015-01-28 ABB Technology AG Method to determine the pressure inside of a vacuum interrupter, and vacuum interrupter itself
WO2015010794A1 (en) * 2013-07-26 2015-01-29 Abb Technology Ag Method to determine the pressure inside of a vacuum interrupter, and vacuum interrupter itself
CN105556631A (en) * 2013-07-26 2016-05-04 Abb技术股份公司 Method to determine the pressure inside of a vacuum interrupter, and vacuum interrupter itself

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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees