TW200717563A - Vacuum switchgear - Google Patents

Vacuum switchgear

Info

Publication number
TW200717563A
TW200717563A TW095131415A TW95131415A TW200717563A TW 200717563 A TW200717563 A TW 200717563A TW 095131415 A TW095131415 A TW 095131415A TW 95131415 A TW95131415 A TW 95131415A TW 200717563 A TW200717563 A TW 200717563A
Authority
TW
Taiwan
Prior art keywords
metallic container
potential
vacuum
vacuum pressure
switchgear
Prior art date
Application number
TW095131415A
Other languages
Chinese (zh)
Other versions
TWI313019B (en
Inventor
Ayumu Morita
Kazuhiro Satou
Masato Kobayashi
Kenji Tsuchiya
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Publication of TW200717563A publication Critical patent/TW200717563A/en
Application granted granted Critical
Publication of TWI313019B publication Critical patent/TWI313019B/zh

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

Landscapes

  • High-Tension Arc-Extinguishing Switches Without Spraying Means (AREA)
  • Measuring Fluid Pressure (AREA)

Abstract

The vacuum switchgear is composed of a metallic container (12) at a floating potential, two insulating bushings, and a pair of electrodes. A measuring terminal (50) for vacuum pressure diagnosis is installed opposite the metallic container (12), and the metallic container (12) and measuring terminal (50) are molded by an insulator (20) such as epoxy, and conductive paint (21) grounded is installed on the outer peripheral part of the insulator (20). The ground capacity of the metallic container (12) is increased by the conductive paint (21) grounded, so that the potential of the metallic container (12) during operation approaches the ground potential. When electricity is discharged between the main circuit and the metallic container when the vacuum pressure is deteriorated, the potential of the metallic container becomes equal to the system potential, so that by a potential rise at the system frequency generated in the metallic container (12), deterioration of the vacuum pressure can be detected. Thereby, a signal processing circuit of a vacuum pressure diagnostic device for a vacuum switchgear is simplified and the cost of the vacuum switchgear is reduced.
TW095131415A 2005-09-13 2006-08-25 Vacuum switchgear TW200717563A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2005264573A JP4169024B2 (en) 2005-09-13 2005-09-13 Vacuum switchgear

Publications (2)

Publication Number Publication Date
TW200717563A true TW200717563A (en) 2007-05-01
TWI313019B TWI313019B (en) 2009-08-01

Family

ID=37450879

Family Applications (1)

Application Number Title Priority Date Filing Date
TW095131415A TW200717563A (en) 2005-09-13 2006-08-25 Vacuum switchgear

Country Status (5)

Country Link
EP (1) EP1763049B1 (en)
JP (1) JP4169024B2 (en)
CN (1) CN1933078B (en)
SG (1) SG131045A1 (en)
TW (1) TW200717563A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI404099B (en) * 2008-01-09 2013-08-01 Hitachi Ltd Vacuum switch device and its vacuum pressure diagnosis method

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5501263B2 (en) * 2010-03-25 2014-05-21 株式会社日立製作所 Vacuum insulated switchgear and vacuum insulated switchgear
TWI485736B (en) * 2010-03-25 2015-05-21 Hitachi Ltd Vacuum switch and vacuum insulated switchgear
CN102522269B (en) * 2011-12-27 2016-08-24 日新恒通电气有限公司 Intelligent breaker
JP6118627B2 (en) * 2013-04-26 2017-04-19 株式会社日立製作所 Vacuum leak monitoring device for vacuum valve
JP6119985B2 (en) * 2013-07-05 2017-04-26 日新電機株式会社 Vacuum valve vacuum degree monitoring method and vacuum valve vacuum degree monitoring apparatus
FR3023650B1 (en) * 2014-07-10 2016-08-19 Alstom Technology Ltd VACUUM INSULATED SWITCH AUTHORIZING VACUUM TEST, SWITCH ASSEMBLY, AND TESTING METHOD
JP6397700B2 (en) * 2014-09-01 2018-09-26 株式会社日立産機システム Vacuum valve pressure diagnostic device or vacuum valve device
FR3059461A1 (en) * 2016-11-28 2018-06-01 Schneider Electric Industries Sas DEVICE FOR DETECTING VACUUM LOSS IN A VACUUM BULB AND VACUUM CUTTING APPARATUS COMPRISING SUCH A DEVICE
JP7175799B2 (en) * 2019-03-04 2022-11-21 株式会社日立産機システム VACUUM VALVE PRESSURE MONITORING DEVICE AND PRESSURE MONITORING METHOD

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4148024A (en) * 1977-03-02 1979-04-03 Westinghouse Electric Corp. Capacitively coupled indicator for a submersible fuse
JPS57148830A (en) 1981-03-11 1982-09-14 Meidensha Electric Mfg Co Ltd Vacuum degree checker for vacuum interrupter
JPS5838424A (en) * 1981-08-31 1983-03-05 株式会社明電舎 Vacuum degree monitor for vacuum breaker
JPS5848319A (en) * 1981-09-16 1983-03-22 株式会社明電舎 Vacuum degree monitor for vacuum breaking device
DE3270153D1 (en) * 1981-10-30 1986-04-30 Meidensha Electric Mfg Co Ltd Vacuum monitor for vacuum interrupter and use of the vacuum monitor
JPS58106431A (en) * 1981-12-21 1983-06-24 Meidensha Electric Mfg Co Ltd Inspecting device for degree of vacuum of vacuum breaker
JPH0765676A (en) 1993-08-24 1995-03-10 Meidensha Corp Vacuum-down detector of vacuum interrupter
KR100370934B1 (en) 1999-04-01 2003-02-05 미쓰비시덴키 가부시키가이샤 Switch gear and power switching apparatus
JP2005108766A (en) * 2003-10-01 2005-04-21 Nissin Electric Co Ltd Double-break vacuum circuit breaker

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI404099B (en) * 2008-01-09 2013-08-01 Hitachi Ltd Vacuum switch device and its vacuum pressure diagnosis method

Also Published As

Publication number Publication date
CN1933078A (en) 2007-03-21
CN1933078B (en) 2010-09-15
SG131045A1 (en) 2007-04-26
EP1763049A1 (en) 2007-03-14
TWI313019B (en) 2009-08-01
JP2007080594A (en) 2007-03-29
EP1763049B1 (en) 2016-08-24
JP4169024B2 (en) 2008-10-22

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