JPS53103137A - Ground directional relay - Google Patents
Ground directional relayInfo
- Publication number
- JPS53103137A JPS53103137A JP1849877A JP1849877A JPS53103137A JP S53103137 A JPS53103137 A JP S53103137A JP 1849877 A JP1849877 A JP 1849877A JP 1849877 A JP1849877 A JP 1849877A JP S53103137 A JPS53103137 A JP S53103137A
- Authority
- JP
- Japan
- Prior art keywords
- directional relay
- ground directional
- zero phase
- ground
- phase voltage
- 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
- Emergency Protection Circuit Devices (AREA)
Abstract
PURPOSE:To increase detection sensitivity as compared with a zero phase voltage and current system whose phase characteristic is affected by the residual zero phase voltage by using the zero phase current.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1849877A JPS588654B2 (en) | 1977-02-21 | 1977-02-21 | Earth fault directional relay |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1849877A JPS588654B2 (en) | 1977-02-21 | 1977-02-21 | Earth fault directional relay |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS53103137A true JPS53103137A (en) | 1978-09-08 |
JPS588654B2 JPS588654B2 (en) | 1983-02-17 |
Family
ID=11973277
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1849877A Expired JPS588654B2 (en) | 1977-02-21 | 1977-02-21 | Earth fault directional relay |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS588654B2 (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5638924A (en) * | 1979-09-03 | 1981-04-14 | Murata Kiyoshi | Directivity grounddfault relay control system |
JPS56115130A (en) * | 1980-02-16 | 1981-09-10 | Takamatsu Electric Works Ltd | Grounddfault trouble discriminating and indicating device |
JPS58150334U (en) * | 1982-04-01 | 1983-10-08 | 美和電気株式会社 | Ground fault detection device for ungrounded cable distribution line Y branch |
JPS6070922A (en) * | 1983-09-26 | 1985-04-22 | 富士電機株式会社 | Ultrafine ground-fault relaying system |
-
1977
- 1977-02-21 JP JP1849877A patent/JPS588654B2/en not_active Expired
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5638924A (en) * | 1979-09-03 | 1981-04-14 | Murata Kiyoshi | Directivity grounddfault relay control system |
JPS56115130A (en) * | 1980-02-16 | 1981-09-10 | Takamatsu Electric Works Ltd | Grounddfault trouble discriminating and indicating device |
JPS58150334U (en) * | 1982-04-01 | 1983-10-08 | 美和電気株式会社 | Ground fault detection device for ungrounded cable distribution line Y branch |
JPS6070922A (en) * | 1983-09-26 | 1985-04-22 | 富士電機株式会社 | Ultrafine ground-fault relaying system |
Also Published As
Publication number | Publication date |
---|---|
JPS588654B2 (en) | 1983-02-17 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
A621 | Written request for application examination |
Effective date: 20040806 Free format text: JAPANESE INTERMEDIATE CODE: A621 |
|
A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20080527 |
|
A313 | Final decision of rejection without a dissenting response from the applicant |
Free format text: JAPANESE INTERMEDIATE CODE: A313 Effective date: 20081014 |
|
A02 | Decision of refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A02 Effective date: 20081202 |