JPS548849A - Electric source trouble detecting lock device - Google Patents

Electric source trouble detecting lock device

Info

Publication number
JPS548849A
JPS548849A JP7402677A JP7402677A JPS548849A JP S548849 A JPS548849 A JP S548849A JP 7402677 A JP7402677 A JP 7402677A JP 7402677 A JP7402677 A JP 7402677A JP S548849 A JPS548849 A JP S548849A
Authority
JP
Japan
Prior art keywords
lock device
electric source
trouble detecting
detecting lock
source trouble
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
JP7402677A
Other languages
Japanese (ja)
Inventor
Genzaburo Kotani
Zenkei Shiotani
Teruo Goto
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP7402677A priority Critical patent/JPS548849A/en
Publication of JPS548849A publication Critical patent/JPS548849A/en
Pending legal-status Critical Current

Links

Landscapes

  • Emergency Protection Circuit Devices (AREA)

Abstract

PURPOSE: To prevent error operation of a protective relay device, by detecting abnormal state of controlled voltage of an operational amplifier in a protective relay device which has the operational amplifier.
COPYRIGHT: (C)1979,JPO&Japio
JP7402677A 1977-06-21 1977-06-21 Electric source trouble detecting lock device Pending JPS548849A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7402677A JPS548849A (en) 1977-06-21 1977-06-21 Electric source trouble detecting lock device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7402677A JPS548849A (en) 1977-06-21 1977-06-21 Electric source trouble detecting lock device

Publications (1)

Publication Number Publication Date
JPS548849A true JPS548849A (en) 1979-01-23

Family

ID=13535194

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7402677A Pending JPS548849A (en) 1977-06-21 1977-06-21 Electric source trouble detecting lock device

Country Status (1)

Country Link
JP (1) JPS548849A (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4924002A (en) * 1972-06-24 1974-03-04

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4924002A (en) * 1972-06-24 1974-03-04

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