JPS51119940A - Ground-fault relay circuit - Google Patents

Ground-fault relay circuit

Info

Publication number
JPS51119940A
JPS51119940A JP4431575A JP4431575A JPS51119940A JP S51119940 A JPS51119940 A JP S51119940A JP 4431575 A JP4431575 A JP 4431575A JP 4431575 A JP4431575 A JP 4431575A JP S51119940 A JPS51119940 A JP S51119940A
Authority
JP
Japan
Prior art keywords
ground
fault relay
relay circuit
possess
frequencies
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
JP4431575A
Other languages
Japanese (ja)
Inventor
Yoshinori Higuchi
Kazuhiko Onuki
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 JP4431575A priority Critical patent/JPS51119940A/en
Publication of JPS51119940A publication Critical patent/JPS51119940A/en
Pending legal-status Critical Current

Links

Landscapes

  • Emergency Protection Circuit Devices (AREA)

Abstract

PURPOSE: To be able to safely detect fine signal providing an active filter circuit at the input stage of ground-fault relay and possess the constant time limit characteristic capable of using without adjustment between plural kinds of frequencies.
COPYRIGHT: (C)1976,JPO&Japio
JP4431575A 1975-04-14 1975-04-14 Ground-fault relay circuit Pending JPS51119940A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4431575A JPS51119940A (en) 1975-04-14 1975-04-14 Ground-fault relay circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4431575A JPS51119940A (en) 1975-04-14 1975-04-14 Ground-fault relay circuit

Publications (1)

Publication Number Publication Date
JPS51119940A true JPS51119940A (en) 1976-10-20

Family

ID=12688042

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4431575A Pending JPS51119940A (en) 1975-04-14 1975-04-14 Ground-fault relay circuit

Country Status (1)

Country Link
JP (1) JPS51119940A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2021063836A (en) * 2018-06-21 2021-04-22 三菱電機株式会社 Device and method for evaluating reliability of semiconductor element

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2021063836A (en) * 2018-06-21 2021-04-22 三菱電機株式会社 Device and method for evaluating reliability of semiconductor element

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