JPS6450971A - Display device for probing earth shortcircuit trouble - Google Patents

Display device for probing earth shortcircuit trouble

Info

Publication number
JPS6450971A
JPS6450971A JP62207476A JP20747687A JPS6450971A JP S6450971 A JPS6450971 A JP S6450971A JP 62207476 A JP62207476 A JP 62207476A JP 20747687 A JP20747687 A JP 20747687A JP S6450971 A JPS6450971 A JP S6450971A
Authority
JP
Japan
Prior art keywords
current
flows
trouble
earth
probing
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
JP62207476A
Other languages
Japanese (ja)
Other versions
JP2711249B2 (en
Inventor
Gihachirou Yamazaki
Osamu Ishida
Masahiro Oikawa
Ryosaku Nakada
Masayuki Ota
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.)
Nippon Kouatsu Electric Co
Tohoku Electric Power Co Inc
Original Assignee
Nippon Kouatsu Electric Co
Tohoku Electric Power Co Inc
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 Nippon Kouatsu Electric Co, Tohoku Electric Power Co Inc filed Critical Nippon Kouatsu Electric Co
Priority to JP62207476A priority Critical patent/JP2711249B2/en
Publication of JPS6450971A publication Critical patent/JPS6450971A/en
Application granted granted Critical
Publication of JP2711249B2 publication Critical patent/JP2711249B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Landscapes

  • Locating Faults (AREA)
  • Emergency Protection Circuit Devices (AREA)

Abstract

PURPOSE:To certainly perform display operation for probing trouble, by detecting a small current by a current detection mechanism when the small current at the time of earth flows to a distribution line. CONSTITUTION:When a small current at the time of earth flows to an overhead distribution line, a radio wave is detected by a radio wave detector and a current flows to a coil 54 in one direction. As a result, a display body 52 moves to a trouble display position from a normal position. Next, when a current of a medium degree flows to the overhead distribution line, a current is detected by a current detector and flows to the coil 54 in the direction opposite to the previous one through a circuit separate from the previous one. As a result, the display body 52 returns to the normal position from the trouble display position. When a large current flows to the distribution line, said current flows to the coil 54 in the same direction as that in the case of a small current and the display body 52 moves toward the trouble display position from the normal position. By this method, even when a current of earth is weak, display operation for probing trouble can be certainly performed.
JP62207476A 1987-08-21 1987-08-21 Ground fault short-circuit fault detection indicator Expired - Lifetime JP2711249B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62207476A JP2711249B2 (en) 1987-08-21 1987-08-21 Ground fault short-circuit fault detection indicator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62207476A JP2711249B2 (en) 1987-08-21 1987-08-21 Ground fault short-circuit fault detection indicator

Publications (2)

Publication Number Publication Date
JPS6450971A true JPS6450971A (en) 1989-02-27
JP2711249B2 JP2711249B2 (en) 1998-02-10

Family

ID=16540383

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62207476A Expired - Lifetime JP2711249B2 (en) 1987-08-21 1987-08-21 Ground fault short-circuit fault detection indicator

Country Status (1)

Country Link
JP (1) JP2711249B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010175375A (en) * 2009-01-29 2010-08-12 Tokyo Electric Power Co Inc:The Accident current indicator
CN107422223A (en) * 2016-12-28 2017-12-01 国网福建省电力有限公司 A kind of method of distributed low current grounding positioning

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010175375A (en) * 2009-01-29 2010-08-12 Tokyo Electric Power Co Inc:The Accident current indicator
CN107422223A (en) * 2016-12-28 2017-12-01 国网福建省电力有限公司 A kind of method of distributed low current grounding positioning
CN107422223B (en) * 2016-12-28 2019-11-01 国网福建省电力有限公司 A kind of method of distribution small current grounding fault positioning

Also Published As

Publication number Publication date
JP2711249B2 (en) 1998-02-10

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