JPS5315546A - Protective relay system - Google Patents

Protective relay system

Info

Publication number
JPS5315546A
JPS5315546A JP8923776A JP8923776A JPS5315546A JP S5315546 A JPS5315546 A JP S5315546A JP 8923776 A JP8923776 A JP 8923776A JP 8923776 A JP8923776 A JP 8923776A JP S5315546 A JPS5315546 A JP S5315546A
Authority
JP
Japan
Prior art keywords
relay system
protective relay
decide
necessity
cycle
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
JP8923776A
Other languages
Japanese (ja)
Inventor
Terunobu Miyazaki
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 JP8923776A priority Critical patent/JPS5315546A/en
Publication of JPS5315546A publication Critical patent/JPS5315546A/en
Pending legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B75/00—Other engines
    • F02B75/02—Engines characterised by their cycles, e.g. six-stroke
    • F02B2075/022—Engines characterised by their cycles, e.g. six-stroke having less than six strokes per cycle
    • F02B2075/027—Engines characterised by their cycles, e.g. six-stroke having less than six strokes per cycle four

Landscapes

  • Protection Of Transformers (AREA)

Abstract

PURPOSE: To decide the necessity or else of protective operation on the basis of discrimination made during a brief period of the order of 1/4 cycle, thereby preventing erroneous operation economically due to the difference in the transient characteristics between two CT's in an overcurrent range.
COPYRIGHT: (C)1978,JPO&Japio
JP8923776A 1976-07-28 1976-07-28 Protective relay system Pending JPS5315546A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8923776A JPS5315546A (en) 1976-07-28 1976-07-28 Protective relay system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8923776A JPS5315546A (en) 1976-07-28 1976-07-28 Protective relay system

Publications (1)

Publication Number Publication Date
JPS5315546A true JPS5315546A (en) 1978-02-13

Family

ID=13965125

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8923776A Pending JPS5315546A (en) 1976-07-28 1976-07-28 Protective relay system

Country Status (1)

Country Link
JP (1) JPS5315546A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59215864A (en) * 1983-05-25 1984-12-05 株式会社ジェイエスピー Manufacture of multilayer structure material

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5013936A (en) * 1973-06-09 1975-02-13
JPS5084852A (en) * 1973-11-30 1975-07-09

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5013936A (en) * 1973-06-09 1975-02-13
JPS5084852A (en) * 1973-11-30 1975-07-09

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59215864A (en) * 1983-05-25 1984-12-05 株式会社ジェイエスピー Manufacture of multilayer structure material
JPH0160421B2 (en) * 1983-05-25 1989-12-22 Nippon Suchiren Peepaa Kk

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