JPS6450971A - Display device for probing earth shortcircuit trouble - Google Patents
Display device for probing earth shortcircuit troubleInfo
- 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
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.
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)
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 |
-
1987
- 1987-08-21 JP JP62207476A patent/JP2711249B2/en not_active Expired - Lifetime
Cited By (3)
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 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
ES8303756A1 (en) | Improvements in and relating to apparatus for checking the validity of coins. | |
ES8308639A1 (en) | Circuit for object detection with a conductive loop. | |
ES460665A1 (en) | Current measuring system | |
JPS6450971A (en) | Display device for probing earth shortcircuit trouble | |
JPS5360293A (en) | Frost detector | |
JPS56110063A (en) | Measuring device for current position and direction of moving body | |
JPS5679229A (en) | Leakage detector for conduit | |
JPS5397894A (en) | High frequency circuit for nuclear magnetism resonance device | |
JPS5244672A (en) | Device for detecting jamming of pointer of moving coil type direct cur rent ammeter | |
JPS5341971A (en) | Fault detector of electromagnetic device | |
JPS541253A (en) | Arc length control apparatus | |
JPS534584A (en) | Detecting system for passage of moving body through fixed point | |
JPS5476186A (en) | Voltage detector | |
JPS52128189A (en) | Eddy current flaw detector | |
JPS51113132A (en) | System for detecting disconnection trouble | |
JPS52122455A (en) | Detecting system for contact opening and closing abnormality | |
JPS563579A (en) | Detecting method and device for shortcircuit at gto inverter arm | |
JPS5354066A (en) | Large current detecting device | |
JPS5241585A (en) | Magnetic field detection device | |
JPS5353750A (en) | Abnormality detection system in i/o devices | |
JPS5232231A (en) | Indicating device | |
JPS5357089A (en) | Magnetic field generator for measurement device using electromagneticultrasonic waves | |
JPS5423832A (en) | Detecting system of air-fuel ratio control device | |
JPS52106446A (en) | Absent phase detector | |
JPS55138665A (en) | Detecting system of operation fault of heating source |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
EXPY | Cancellation because of completion of term |