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JPS5268938A - One line earth ground trouble detecting relay - Google Patents

One line earth ground trouble detecting relay

Info

Publication number
JPS5268938A
JPS5268938A JP14401675A JP14401675A JPS5268938A JP S5268938 A JPS5268938 A JP S5268938A JP 14401675 A JP14401675 A JP 14401675A JP 14401675 A JP14401675 A JP 14401675A JP S5268938 A JPS5268938 A JP S5268938A
Authority
JP
Japan
Prior art keywords
earth ground
line earth
detecting relay
trouble detecting
ground trouble
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
JP14401675A
Other languages
Japanese (ja)
Other versions
JPS5731383B2 (en
Inventor
Takao Kubo
Yoshiaki Matsui
Fumio Iwatani
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 JP14401675A priority Critical patent/JPS5268938A/en
Publication of JPS5268938A publication Critical patent/JPS5268938A/en
Publication of JPS5731383B2 publication Critical patent/JPS5731383B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Emergency Protection Circuit Devices (AREA)

Abstract

PURPOSE: To detect only one line earth ground trouble of the direct ground system by discriminating the phase between three electric quantities of the line voltage, the negative- phase voltage, and the zero-phase voltage.
COPYRIGHT: (C)1977,JPO&Japio
JP14401675A 1975-12-05 1975-12-05 One line earth ground trouble detecting relay Granted JPS5268938A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14401675A JPS5268938A (en) 1975-12-05 1975-12-05 One line earth ground trouble detecting relay

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14401675A JPS5268938A (en) 1975-12-05 1975-12-05 One line earth ground trouble detecting relay

Publications (2)

Publication Number Publication Date
JPS5268938A true JPS5268938A (en) 1977-06-08
JPS5731383B2 JPS5731383B2 (en) 1982-07-05

Family

ID=15352351

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14401675A Granted JPS5268938A (en) 1975-12-05 1975-12-05 One line earth ground trouble detecting relay

Country Status (1)

Country Link
JP (1) JPS5268938A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54113044A (en) * 1978-02-22 1979-09-04 Kansai Electric Power Co Inc:The Ground faulted phase detecting relay
JPS5889028A (en) * 1981-11-13 1983-05-27 ウエスチングハウス　エレクトリック　コ−ポレ−ション Method and device for detecting 1-wire ground fault accident of 3-phase power system

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54113044A (en) * 1978-02-22 1979-09-04 Kansai Electric Power Co Inc:The Ground faulted phase detecting relay
JPS5889028A (en) * 1981-11-13 1983-05-27 ウエスチングハウス　エレクトリック　コ−ポレ−ション Method and device for detecting 1-wire ground fault accident of 3-phase power system
US4398232A (en) * 1981-11-13 1983-08-09 Westinghouse Electric Corp. Protective relaying methods and apparatus

Also Published As

Publication number Publication date
JPS5731383B2 (en) 1982-07-05

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