JPS6248452B2 - - Google Patents
Info
- Publication number
- JPS6248452B2 JPS6248452B2 JP2472880A JP2472880A JPS6248452B2 JP S6248452 B2 JPS6248452 B2 JP S6248452B2 JP 2472880 A JP2472880 A JP 2472880A JP 2472880 A JP2472880 A JP 2472880A JP S6248452 B2 JPS6248452 B2 JP S6248452B2
- Authority
- JP
- Japan
- Prior art keywords
- phase
- ground
- ground voltage
- ground fault
- input
- 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.)
- Expired
Links
- 238000000034 method Methods 0.000 claims description 4
- 238000012850 discrimination method Methods 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 8
- 229910001219 R-phase Inorganic materials 0.000 description 4
- 230000007935 neutral effect Effects 0.000 description 4
- 230000035945 sensitivity Effects 0.000 description 3
- 238000001514 detection method Methods 0.000 description 2
- 239000003990 capacitor Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000011896 sensitive detection Methods 0.000 description 1
Landscapes
- Emergency Protection Circuit Devices (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2472880A JPS56121329A (en) | 1980-02-29 | 1980-02-29 | Grounddfault phase discriminating system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2472880A JPS56121329A (en) | 1980-02-29 | 1980-02-29 | Grounddfault phase discriminating system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS56121329A JPS56121329A (en) | 1981-09-24 |
| JPS6248452B2 true JPS6248452B2 (fr) | 1987-10-14 |
Family
ID=12146207
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2472880A Granted JPS56121329A (en) | 1980-02-29 | 1980-02-29 | Grounddfault phase discriminating system |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS56121329A (fr) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6483730A (en) * | 1987-09-25 | 1989-03-29 | Matsushita Electric Ind Co Ltd | Hot-water supply equipment |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3546396B2 (ja) * | 1995-08-22 | 2004-07-28 | 日本高圧電気株式会社 | 高圧配電系統における地絡判別装置 |
-
1980
- 1980-02-29 JP JP2472880A patent/JPS56121329A/ja active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6483730A (en) * | 1987-09-25 | 1989-03-29 | Matsushita Electric Ind Co Ltd | Hot-water supply equipment |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS56121329A (en) | 1981-09-24 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4502086A (en) | Differential protective relay | |
| US7345863B2 (en) | Apparatus and method for identifying a loss of a current transformer signal in a power system | |
| US6950764B2 (en) | Arrangements to detect and respond to disturbances in electrical power systems | |
| EP0316204B1 (fr) | Relais de protection | |
| US4704653A (en) | Transformer differential relay with speed-up apparatus | |
| US7199991B2 (en) | Electrical bus protection method & apparatus | |
| US5523938A (en) | Differential current fault protection for an AC/DC hybrid system and method therefor | |
| EP0026620A1 (fr) | Procédé et appareil pour l'identification de défauts dans des systèmes électriques de transmission de puissance | |
| US5627712A (en) | Transformer differential relay | |
| US4530025A (en) | Current ratio-differential relay | |
| US8395871B2 (en) | Device and method for detecting faulted phases in a multi-phase electrical network | |
| US3958153A (en) | Method and apparatus for fault detection in a three-phase electric network | |
| JPS6248452B2 (fr) | ||
| JP3287121B2 (ja) | 電圧低下検出回路 | |
| JPS6248453B2 (fr) | ||
| JPH02272365A (ja) | 開閉器制御装置の位相検出回路 | |
| GB2044024A (en) | Overcurrent relays | |
| JPS6248454B2 (fr) | ||
| JPS61189119A (ja) | 断線検出装置 | |
| Ahmadzadeh-Shooshtari et al. | A method to detect DC bias in transformers using differential current waveforms | |
| JP3546396B2 (ja) | 高圧配電系統における地絡判別装置 | |
| JP2997525B2 (ja) | 断線・欠相検出装置 | |
| JPH0311922A (ja) | 送電方向判別装置 | |
| JPS6229962B2 (fr) | ||
| JP2745622B2 (ja) | 開閉器制御装置 |