JPS5217644A - Directional judging relay system - Google Patents

Directional judging relay system

Info

Publication number
JPS5217644A
JPS5217644A JP9315175A JP9315175A JPS5217644A JP S5217644 A JPS5217644 A JP S5217644A JP 9315175 A JP9315175 A JP 9315175A JP 9315175 A JP9315175 A JP 9315175A JP S5217644 A JPS5217644 A JP S5217644A
Authority
JP
Japan
Prior art keywords
directional
relay system
judging relay
judging
minimize
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
JP9315175A
Other languages
Japanese (ja)
Inventor
Hiroshi Sasaki
Yoshiteru Miki
Haruo Nohara
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP9315175A priority Critical patent/JPS5217644A/en
Publication of JPS5217644A publication Critical patent/JPS5217644A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: The effective judgment of the accident phenomenon using the memory circuit in order to minimize the influence of the load current.
COPYRIGHT: (C)1977,JPO&Japio
JP9315175A 1975-08-01 1975-08-01 Directional judging relay system Pending JPS5217644A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9315175A JPS5217644A (en) 1975-08-01 1975-08-01 Directional judging relay system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9315175A JPS5217644A (en) 1975-08-01 1975-08-01 Directional judging relay system

Publications (1)

Publication Number Publication Date
JPS5217644A true JPS5217644A (en) 1977-02-09

Family

ID=14074527

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9315175A Pending JPS5217644A (en) 1975-08-01 1975-08-01 Directional judging relay system

Country Status (1)

Country Link
JP (1) JPS5217644A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008109729A (en) * 2006-10-23 2008-05-08 Mitsubishi Electric Corp Digital directional relay

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5055852A (en) * 1973-09-19 1975-05-16

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5055852A (en) * 1973-09-19 1975-05-16

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008109729A (en) * 2006-10-23 2008-05-08 Mitsubishi Electric Corp Digital directional relay

Similar Documents

Publication Publication Date Title
JPS522346A (en) Terminal equipment program loading system
JPS51135441A (en) Load control unit
JPS5217644A (en) Directional judging relay system
JPS5233237A (en) Elevator control system
JPS5232557A (en) Supply control device
JPS51127418A (en) Brake circuit for motor
JPS5218586A (en) Manual control system
JPS51145300A (en) Traffic signal controllor
JPS538747A (en) Three phase control system
JPS51111098A (en) Revault car detector
JPS51126062A (en) Tap short bonding method on wire bonding
JPS51142257A (en) Signal-vector discrimination circuit
JPS5421550A (en) Protective relay system
JPS51118002A (en) Insulation method for electrical equipments
JPS529489A (en) Element for electrochemically measuring oxidized substance or reduced substance in water solution
JPS5254150A (en) Load controller
JPS5390731A (en) Control circuit for memory unit
JPS52145758A (en) Inspecting system of digital protective relay
JPS5220248A (en) Converter circuit proteceive relay means
JPS5220247A (en) Converter circuit protective relay means
JPS5254913A (en) Y- starting system
JPS51143845A (en) Earthquake-proof enclosed type switchboard
JPS51121760A (en) Voltage stabilizing decive of power system
JPS51134532A (en) Memory switching circuit
JPS522141A (en) Interruption control system