GB1277935A - Leak detecting means for vacuum switches - Google Patents

Leak detecting means for vacuum switches

Info

Publication number
GB1277935A
GB1277935A GB56989/69A GB5698969A GB1277935A GB 1277935 A GB1277935 A GB 1277935A GB 56989/69 A GB56989/69 A GB 56989/69A GB 5698969 A GB5698969 A GB 5698969A GB 1277935 A GB1277935 A GB 1277935A
Authority
GB
United Kingdom
Prior art keywords
vacuum
switch
switches
detected
loss
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
GB56989/69A
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.)
Toshiba Corp
Original Assignee
Tokyo Shibaura Electric Co Ltd
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 Tokyo Shibaura Electric Co Ltd filed Critical Tokyo Shibaura Electric Co Ltd
Publication of GB1277935A publication Critical patent/GB1277935A/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
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M3/00—Investigating fluid-tightness of structures
    • G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
    • G01M3/04—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point
    • G01M3/20—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point using special tracer materials, e.g. dye, fluorescent material, radioactive material
    • G01M3/202—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point using special tracer materials, e.g. dye, fluorescent material, radioactive material using mass spectrometer detection systems
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/0005—Tap change devices
    • H01H2009/0061—Monitoring tap change switching devices
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/0005—Tap change devices
    • H01H9/0038—Tap change devices making use of vacuum switches
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/0005—Tap change devices
    • H01H9/0044—Casings; Mountings; Disposition in transformer housing

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Housings And Mounting Of Transformers (AREA)
  • Examining Or Testing Airtightness (AREA)
  • High-Tension Arc-Extinguishing Switches Without Spraying Means (AREA)
  • Fluid-Pressure Circuits (AREA)

Abstract

1277935 Vacuum switches; electric transformers TOKYO SHIBAURA DENKI KK 21 Nov 1969 [22 Nov 1968] 56989/69 Headings H1N and HIT Loss of vacuum in a vacuum switch is detected as liquid loss from a liquid filled enclosure surrounding the switch. In Fig. 2, an on-load tap changer has vacuum switches 10a, 10b combined with a tap selector switch 50 and vacuum switches 10c, 10d combined with tap selector switch 51. Oil-filled enclosures 15a to 15d surround the vacuum switches such that loss of vacuum, with the consequent leak of oil into the switch, is detected by bellows 63-66 having contacts 74-71 such that an alarm is actuated, the motor 53 is stopped and the transformer deenergized. The switches are operated by cams 56 to 59 through motor 53 and reduction gearing 52 which also operate the top charging switches. In Fig. 1 (not shown) the leak of fluid from the vacuum switch enclosure into the vacuum switch is detected by a contact bridging float in a liquid reservoir.
GB56989/69A 1968-11-22 1969-11-21 Leak detecting means for vacuum switches Expired GB1277935A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP43085893A JPS4945434B1 (en) 1968-11-22 1968-11-22

Publications (1)

Publication Number Publication Date
GB1277935A true GB1277935A (en) 1972-06-14

Family

ID=13871551

Family Applications (1)

Application Number Title Priority Date Filing Date
GB56989/69A Expired GB1277935A (en) 1968-11-22 1969-11-21 Leak detecting means for vacuum switches

Country Status (3)

Country Link
US (1) US3626125A (en)
JP (1) JPS4945434B1 (en)
GB (1) GB1277935A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2471925A (en) * 2009-07-15 2011-01-19 Lucy And Co Ltd W Electrical switchgear

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3814885A (en) * 1973-07-11 1974-06-04 Gen Electric Method of detecting a leak in a vacuum interrupter located inside a housing containing pressurized gas
SE410067B (en) * 1974-04-02 1979-09-17 Siemens Ag DEVICE FOR DETECTING LACK OF OPERATION FOR VACUUM BREAKING CHAMBER
US3983345A (en) * 1975-01-30 1976-09-28 General Electric Company Method of detecting a leak in any one of the vacuum interrupters of a high voltage circuit breaker
US4393286A (en) * 1978-08-24 1983-07-12 Tokyo Shibaura Denki Kabushiki Kaisha Vacuum circuit breakers
DE3424339A1 (en) * 1984-06-28 1986-01-09 Siemens AG, 1000 Berlin und 8000 München VACUUM SWITCH WITH A VACUUM MONITORING DEVICE
US6723940B1 (en) * 1999-04-13 2004-04-20 Abb Inc. Encapsulated magnetically actuated vacuum interrupter with integral bushing connector
FR2800905B1 (en) * 1999-11-08 2001-11-30 Alstom CENTRAL SWITCH WITH A RADIATOR-EXCHANGER
CA2410703A1 (en) * 2000-05-23 2001-11-29 Abb Power T & D Company Inc. Combination of a vacuum interruption device and oil-filled transformer
US7148677B2 (en) * 2005-02-15 2006-12-12 Eaton Corporation Vacuum circuit interrupter including circuit monitoring leakage or loss of vacuum and method of monitoring a vacuum interrupter for leakage or loss of vacuum
US7499255B2 (en) * 2006-01-31 2009-03-03 Thomas & Betts International, Inc. Vacuum-type electrical switching apparatus
CN103534777B (en) * 2011-03-25 2016-03-09 Abb技术有限公司 The tap changer improved
EP2624273B1 (en) * 2012-02-03 2015-04-01 ABB Technology AG Vacuum interrupter with transition areas between metal housing parts and ceramic housing parts covered by insulating material
US9216527B2 (en) 2012-02-09 2015-12-22 G & W Electric Company Solid-dielectric switch including a molded viewing window
EP2996131B1 (en) * 2014-09-12 2020-08-05 ABB Schweiz AG Vacuum interrupter pole for high pressure environment application
CN114923682B (en) * 2022-05-17 2023-10-24 北京通嘉宏瑞科技有限公司 Shaft seal service life acceleration verification testing machine and testing method

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1796746A (en) * 1926-11-02 1931-03-17 Buchholz Max Protection of electrical apparatus
US3206569A (en) * 1964-12-17 1965-09-14 Orin P Mccarty Protective means for transformer tap changer
US3404247A (en) * 1966-03-08 1968-10-01 Gen Electric Pressure responsive protective means for vacuum type circuit interrupters

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2471925A (en) * 2009-07-15 2011-01-19 Lucy And Co Ltd W Electrical switchgear
GB2471864A (en) * 2009-07-15 2011-01-19 Lucy And Co Ltd W Vacuum circuit breaker surrounded by fluid

Also Published As

Publication number Publication date
JPS4945434B1 (en) 1974-12-04
US3626125A (en) 1971-12-07

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee