JPS5421555A - Protective relay - Google Patents

Protective relay

Info

Publication number
JPS5421555A
JPS5421555A JP8566777A JP8566777A JPS5421555A JP S5421555 A JPS5421555 A JP S5421555A JP 8566777 A JP8566777 A JP 8566777A JP 8566777 A JP8566777 A JP 8566777A JP S5421555 A JPS5421555 A JP S5421555A
Authority
JP
Japan
Prior art keywords
protective relay
electricity
memorizable
obtaining
detecting
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
JP8566777A
Other languages
Japanese (ja)
Inventor
Fumio Ando
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
Toshiba Corp
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 Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP8566777A priority Critical patent/JPS5421555A/en
Publication of JPS5421555A publication Critical patent/JPS5421555A/en
Pending legal-status Critical Current

Links

Landscapes

  • Emergency Protection Circuit Devices (AREA)

Abstract

PURPOSE: To steadily detect the increase in A.C. voltage or current by obtaining memorizable quantity relative to the minimum value of pulsating electricity which related to A.C. electricity and by detecting it as a standard value.
COPYRIGHT: (C)1979,JPO&Japio
JP8566777A 1977-07-19 1977-07-19 Protective relay Pending JPS5421555A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8566777A JPS5421555A (en) 1977-07-19 1977-07-19 Protective relay

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8566777A JPS5421555A (en) 1977-07-19 1977-07-19 Protective relay

Publications (1)

Publication Number Publication Date
JPS5421555A true JPS5421555A (en) 1979-02-17

Family

ID=13865165

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8566777A Pending JPS5421555A (en) 1977-07-19 1977-07-19 Protective relay

Country Status (1)

Country Link
JP (1) JPS5421555A (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4954838A (en) * 1972-09-29 1974-05-28

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4954838A (en) * 1972-09-29 1974-05-28

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