JPH0159811B2 - - Google Patents

Info

Publication number
JPH0159811B2
JPH0159811B2 JP55074288A JP7428880A JPH0159811B2 JP H0159811 B2 JPH0159811 B2 JP H0159811B2 JP 55074288 A JP55074288 A JP 55074288A JP 7428880 A JP7428880 A JP 7428880A JP H0159811 B2 JPH0159811 B2 JP H0159811B2
Authority
JP
Japan
Prior art keywords
preprocessing
frequency
processing
input information
protection
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.)
Expired
Application number
JP55074288A
Other languages
English (en)
Japanese (ja)
Other versions
JPS573515A (en
Inventor
Goo Nohara
Junichi Makino
Eizaburo Sako
Tomio Chiba
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 JP7428880A priority Critical patent/JPS573515A/ja
Publication of JPS573515A publication Critical patent/JPS573515A/ja
Publication of JPH0159811B2 publication Critical patent/JPH0159811B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Measurement Of Current Or Voltage (AREA)
  • Emergency Protection Circuit Devices (AREA)
JP7428880A 1980-06-04 1980-06-04 Digital protecting device Granted JPS573515A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7428880A JPS573515A (en) 1980-06-04 1980-06-04 Digital protecting device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7428880A JPS573515A (en) 1980-06-04 1980-06-04 Digital protecting device

Publications (2)

Publication Number Publication Date
JPS573515A JPS573515A (en) 1982-01-09
JPH0159811B2 true JPH0159811B2 (enExample) 1989-12-19

Family

ID=13542784

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7428880A Granted JPS573515A (en) 1980-06-04 1980-06-04 Digital protecting device

Country Status (1)

Country Link
JP (1) JPS573515A (enExample)

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5128637A (en) * 1974-09-04 1976-03-11 Tokyo Electric Power Co Denryokukeito no hogohoshiki
JPS5526067A (en) * 1978-08-16 1980-02-25 Hitachi Ltd Protective relay unit

Also Published As

Publication number Publication date
JPS573515A (en) 1982-01-09

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