JPS5267769A - Vacuum breaker deteriorated vacuum alarm - Google Patents

Vacuum breaker deteriorated vacuum alarm

Info

Publication number
JPS5267769A
JPS5267769A JP14294075A JP14294075A JPS5267769A JP S5267769 A JPS5267769 A JP S5267769A JP 14294075 A JP14294075 A JP 14294075A JP 14294075 A JP14294075 A JP 14294075A JP S5267769 A JPS5267769 A JP S5267769A
Authority
JP
Japan
Prior art keywords
vacuum
deteriorated
alarm
breaker
vacuum breaker
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.)
Pending
Application number
JP14294075A
Other languages
Japanese (ja)
Inventor
Yoshimasa Kubota
Yukio Kurosawa
Hiroyuki Sugawara
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.)
Hitachi Ltd
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
Priority to JP14294075A priority Critical patent/JPS5267769A/en
Priority to US05/708,098 priority patent/US4163130A/en
Publication of JPS5267769A publication Critical patent/JPS5267769A/en
Pending legal-status Critical Current

Links

Landscapes

  • High-Tension Arc-Extinguishing Switches Without Spraying Means (AREA)
JP14294075A 1975-07-25 1975-12-03 Vacuum breaker deteriorated vacuum alarm Pending JPS5267769A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP14294075A JPS5267769A (en) 1975-12-03 1975-12-03 Vacuum breaker deteriorated vacuum alarm
US05/708,098 US4163130A (en) 1975-07-25 1976-07-23 Vacuum interrupter with pressure monitoring means

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14294075A JPS5267769A (en) 1975-12-03 1975-12-03 Vacuum breaker deteriorated vacuum alarm

Publications (1)

Publication Number Publication Date
JPS5267769A true JPS5267769A (en) 1977-06-04

Family

ID=15327172

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14294075A Pending JPS5267769A (en) 1975-07-25 1975-12-03 Vacuum breaker deteriorated vacuum alarm

Country Status (1)

Country Link
JP (1) JPS5267769A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59175524A (en) * 1983-03-24 1984-10-04 東京電力株式会社 Vacuum degree monitor of vacuum breaker
JP2010197132A (en) * 2009-02-24 2010-09-09 Chugoku Electric Power Co Inc:The Vacuum circuit breaker vacuum tester

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59175524A (en) * 1983-03-24 1984-10-04 東京電力株式会社 Vacuum degree monitor of vacuum breaker
JP2010197132A (en) * 2009-02-24 2010-09-09 Chugoku Electric Power Co Inc:The Vacuum circuit breaker vacuum tester

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