JPS54147442A - Relay inspection system for second harmonic detection - Google Patents

Relay inspection system for second harmonic detection

Info

Publication number
JPS54147442A
JPS54147442A JP5448178A JP5448178A JPS54147442A JP S54147442 A JPS54147442 A JP S54147442A JP 5448178 A JP5448178 A JP 5448178A JP 5448178 A JP5448178 A JP 5448178A JP S54147442 A JPS54147442 A JP S54147442A
Authority
JP
Japan
Prior art keywords
harmonic
inspection
signal
circuit
current
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.)
Granted
Application number
JP5448178A
Other languages
English (en)
Japanese (ja)
Other versions
JPS626405B2 (enrdf_load_stackoverflow
Inventor
Koichi Kimura
Hiroshi Sasaki
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 JP5448178A priority Critical patent/JPS54147442A/ja
Publication of JPS54147442A publication Critical patent/JPS54147442A/ja
Publication of JPS626405B2 publication Critical patent/JPS626405B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Protection Of Transformers (AREA)
  • Emergency Protection Circuit Devices (AREA)
JP5448178A 1978-05-10 1978-05-10 Relay inspection system for second harmonic detection Granted JPS54147442A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5448178A JPS54147442A (en) 1978-05-10 1978-05-10 Relay inspection system for second harmonic detection

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5448178A JPS54147442A (en) 1978-05-10 1978-05-10 Relay inspection system for second harmonic detection

Publications (2)

Publication Number Publication Date
JPS54147442A true JPS54147442A (en) 1979-11-17
JPS626405B2 JPS626405B2 (enrdf_load_stackoverflow) 1987-02-10

Family

ID=12971841

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5448178A Granted JPS54147442A (en) 1978-05-10 1978-05-10 Relay inspection system for second harmonic detection

Country Status (1)

Country Link
JP (1) JPS54147442A (enrdf_load_stackoverflow)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101404308B1 (ko) * 2013-01-21 2014-06-05 주식회사 엘지유플러스 무선 통신 중계기 및 그 제어방법

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS51142653A (en) * 1975-06-02 1976-12-08 Tokyo Electric Power Co Inc:The Digital type protective relaying system

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS51142653A (en) * 1975-06-02 1976-12-08 Tokyo Electric Power Co Inc:The Digital type protective relaying system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101404308B1 (ko) * 2013-01-21 2014-06-05 주식회사 엘지유플러스 무선 통신 중계기 및 그 제어방법

Also Published As

Publication number Publication date
JPS626405B2 (enrdf_load_stackoverflow) 1987-02-10

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