JPS5223640A - Protective relay - Google Patents

Protective relay

Info

Publication number
JPS5223640A
JPS5223640A JP9860975A JP9860975A JPS5223640A JP S5223640 A JPS5223640 A JP S5223640A JP 9860975 A JP9860975 A JP 9860975A JP 9860975 A JP9860975 A JP 9860975A JP S5223640 A JPS5223640 A JP S5223640A
Authority
JP
Japan
Prior art keywords
protective relay
leaf
relay
phase comparator
digital device
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
JP9860975A
Other languages
Japanese (ja)
Inventor
Minoru Iwasaki
Takayuki Matsuda
Kazuhiro Sano
Yoshiteru Miki
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
Tokyo Electric Power Company Holdings Inc
Original Assignee
Tokyo Electric Power Co Inc
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 Tokyo Electric Power Co Inc, Hitachi Ltd filed Critical Tokyo Electric Power Co Inc
Priority to JP9860975A priority Critical patent/JPS5223640A/en
Publication of JPS5223640A publication Critical patent/JPS5223640A/en
Pending legal-status Critical Current

Links

Landscapes

  • Emergency Protection Circuit Devices (AREA)

Abstract

PURPOSE: Mho relay having leaf-shape characteristic obtained not by phase comparator but by digital device.
COPYRIGHT: (C)1977,JPO&Japio
JP9860975A 1975-08-15 1975-08-15 Protective relay Pending JPS5223640A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9860975A JPS5223640A (en) 1975-08-15 1975-08-15 Protective relay

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9860975A JPS5223640A (en) 1975-08-15 1975-08-15 Protective relay

Publications (1)

Publication Number Publication Date
JPS5223640A true JPS5223640A (en) 1977-02-22

Family

ID=14224326

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9860975A Pending JPS5223640A (en) 1975-08-15 1975-08-15 Protective relay

Country Status (1)

Country Link
JP (1) JPS5223640A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS577814A (en) * 1980-05-21 1982-01-16 Phillips Petroleum Co Method of manufacturing and using silica by hydrolysis of silicic ester
US4841405A (en) * 1985-03-06 1989-06-20 Westinghouse Electric Corp. Protective relaying apparatus for providing fault-resistance correction

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS577814A (en) * 1980-05-21 1982-01-16 Phillips Petroleum Co Method of manufacturing and using silica by hydrolysis of silicic ester
JPH0338207B2 (en) * 1980-05-21 1991-06-10 Phillips Petroleum Co
US4841405A (en) * 1985-03-06 1989-06-20 Westinghouse Electric Corp. Protective relaying apparatus for providing fault-resistance correction

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