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 Co 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 (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

Similar Documents

Publication Publication Date Title
JPS5223640A (en) Protective relay
JPS51130250A (en) Apparatus for searching objects
JPS5219217A (en) Overcurrent limiting device
JPS51150650A (en) Digital protection relay device
JPS5219216A (en) Overcurrent limiting circuit
JPS528877A (en) Object detector unit
JPS5317950A (en) Settling system for digital protective relay
JPS51130849A (en) Carrier protective relay
JPS51118052A (en) Digital protective relay system
JPS5238137A (en) Distance relay system
JPS5238136A (en) Distance relay system
JPS528444A (en) Distance relay device
JPS5228653A (en) Current comparation relay
JPS51142654A (en) Digital protective relaying device
JPS5224537A (en) Slide preparing device
JPS5228646A (en) Relay with plural inputs
JPS51111366A (en) Effective value transformation apparatus
JPS5230665A (en) Rattrap
JPS51111642A (en) Complex characteristic protection relay
JPS51118053A (en) Digital type protective relay system
JPS51132006A (en) Station selecting device
JPS5272108A (en) Transceiver
JPS5220247A (en) Converter circuit protective relay means
JPS5220248A (en) Converter circuit proteceive relay means
JPS5237606A (en) System to changeover to bypass at time of turbine trip