JPS5393344A - Protective relay - Google Patents

Protective relay

Info

Publication number
JPS5393344A
JPS5393344A JP722577A JP722577A JPS5393344A JP S5393344 A JPS5393344 A JP S5393344A JP 722577 A JP722577 A JP 722577A JP 722577 A JP722577 A JP 722577A JP S5393344 A JPS5393344 A JP S5393344A
Authority
JP
Japan
Prior art keywords
protective relay
fault
exceed
enable
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.)
Granted
Application number
JP722577A
Other languages
Japanese (ja)
Other versions
JPS5837770B2 (en
Inventor
Shigeru Suzuki
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 JP722577A priority Critical patent/JPS5837770B2/en
Publication of JPS5393344A publication Critical patent/JPS5393344A/en
Publication of JPS5837770B2 publication Critical patent/JPS5837770B2/en
Expired legal-status Critical Current

Links

Landscapes

  • Emergency Protection Circuit Devices (AREA)

Abstract

PURPOSE: To enable an operation of detecting a fault without a time delay, even for a transient high frequency oscillation generated when in a system fault, by making a detection that an instantaneous value of the system voltage does not exceed the constant level for more than a certain length of period.
COPYRIGHT: (C)1978,JPO&Japio
JP722577A 1977-01-27 1977-01-27 Protective relay device Expired JPS5837770B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP722577A JPS5837770B2 (en) 1977-01-27 1977-01-27 Protective relay device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP722577A JPS5837770B2 (en) 1977-01-27 1977-01-27 Protective relay device

Publications (2)

Publication Number Publication Date
JPS5393344A true JPS5393344A (en) 1978-08-16
JPS5837770B2 JPS5837770B2 (en) 1983-08-18

Family

ID=11660042

Family Applications (1)

Application Number Title Priority Date Filing Date
JP722577A Expired JPS5837770B2 (en) 1977-01-27 1977-01-27 Protective relay device

Country Status (1)

Country Link
JP (1) JPS5837770B2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59209060A (en) * 1983-05-11 1984-11-27 Hitachi Ltd Gas exhaust device of electromagnetic clutch motor

Also Published As

Publication number Publication date
JPS5837770B2 (en) 1983-08-18

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