JPS5393345A - Protective relay - Google Patents

Protective relay

Info

Publication number
JPS5393345A
JPS5393345A JP722777A JP722777A JPS5393345A JP S5393345 A JPS5393345 A JP S5393345A JP 722777 A JP722777 A JP 722777A JP 722777 A JP722777 A JP 722777A JP S5393345 A JPS5393345 A JP S5393345A
Authority
JP
Japan
Prior art keywords
protective relay
signal
hazard
enabling
eliminate
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
JP722777A
Other languages
Japanese (ja)
Inventor
Takayoshi Iwamoto
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 JP722777A priority Critical patent/JPS5393345A/en
Publication of JPS5393345A publication Critical patent/JPS5393345A/en
Pending legal-status Critical Current

Links

Landscapes

  • Emergency Protection Circuit Devices (AREA)

Abstract

PURPOSE: To eliminate a hazard of open circuit in secondary side of the current transformer, by such manner that with an operational amplifier used, while making a feed-back of signal actually applied to the protective relay, this is so controlled as to be a desired signal, enabling a desired test signal to be applied.
COPYRIGHT: (C)1978,JPO&Japio
JP722777A 1977-01-27 1977-01-27 Protective relay Pending JPS5393345A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP722777A JPS5393345A (en) 1977-01-27 1977-01-27 Protective relay

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP722777A JPS5393345A (en) 1977-01-27 1977-01-27 Protective relay

Publications (1)

Publication Number Publication Date
JPS5393345A true JPS5393345A (en) 1978-08-16

Family

ID=11660097

Family Applications (1)

Application Number Title Priority Date Filing Date
JP722777A Pending JPS5393345A (en) 1977-01-27 1977-01-27 Protective relay

Country Status (1)

Country Link
JP (1) JPS5393345A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106684820A (en) * 2016-11-09 2017-05-17 国网天津市电力公司 Open circuit automatic protection device for secondary circuit of high voltage current transformer

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5144591A (en) * 1974-10-15 1976-04-16 Matsushita Electric Industrial Co Ltd Shokubaino renzokukensahoho

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5144591A (en) * 1974-10-15 1976-04-16 Matsushita Electric Industrial Co Ltd Shokubaino renzokukensahoho

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106684820A (en) * 2016-11-09 2017-05-17 国网天津市电力公司 Open circuit automatic protection device for secondary circuit of high voltage current transformer

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