JPS53121144A - Carrier protective relaying equipment - Google Patents

Carrier protective relaying equipment

Info

Publication number
JPS53121144A
JPS53121144A JP3547477A JP3547477A JPS53121144A JP S53121144 A JPS53121144 A JP S53121144A JP 3547477 A JP3547477 A JP 3547477A JP 3547477 A JP3547477 A JP 3547477A JP S53121144 A JPS53121144 A JP S53121144A
Authority
JP
Japan
Prior art keywords
protective relaying
carrier protective
relaying equipment
equipment
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
JP3547477A
Other languages
Japanese (ja)
Inventor
Hitoshi Makino
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 JP3547477A priority Critical patent/JPS53121144A/en
Publication of JPS53121144A publication Critical patent/JPS53121144A/en
Pending legal-status Critical Current

Links

Landscapes

  • Emergency Protection Circuit Devices (AREA)

Abstract

PURPOSE: To enable locking of equipment without requiring another channel, by controlling noise detection relay or noise lock channel signal thereby changing constant frequency transmission signal and detecting said change at the opposite terminal.
COPYRIGHT: (C)1978,JPO&Japio
JP3547477A 1977-03-31 1977-03-31 Carrier protective relaying equipment Pending JPS53121144A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3547477A JPS53121144A (en) 1977-03-31 1977-03-31 Carrier protective relaying equipment

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3547477A JPS53121144A (en) 1977-03-31 1977-03-31 Carrier protective relaying equipment

Publications (1)

Publication Number Publication Date
JPS53121144A true JPS53121144A (en) 1978-10-23

Family

ID=12442763

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3547477A Pending JPS53121144A (en) 1977-03-31 1977-03-31 Carrier protective relaying equipment

Country Status (1)

Country Link
JP (1) JPS53121144A (en)

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