JPS5421555A - Protective relay - Google Patents
Protective relayInfo
- Publication number
- JPS5421555A JPS5421555A JP8566777A JP8566777A JPS5421555A JP S5421555 A JPS5421555 A JP S5421555A JP 8566777 A JP8566777 A JP 8566777A JP 8566777 A JP8566777 A JP 8566777A JP S5421555 A JPS5421555 A JP S5421555A
- Authority
- JP
- Japan
- Prior art keywords
- protective relay
- electricity
- memorizable
- obtaining
- detecting
- 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.)
- Pending
Links
Landscapes
- Emergency Protection Circuit Devices (AREA)
Abstract
PURPOSE: To steadily detect the increase in A.C. voltage or current by obtaining memorizable quantity relative to the minimum value of pulsating electricity which related to A.C. electricity and by detecting it as a standard value.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8566777A JPS5421555A (en) | 1977-07-19 | 1977-07-19 | Protective relay |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8566777A JPS5421555A (en) | 1977-07-19 | 1977-07-19 | Protective relay |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5421555A true JPS5421555A (en) | 1979-02-17 |
Family
ID=13865165
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP8566777A Pending JPS5421555A (en) | 1977-07-19 | 1977-07-19 | Protective relay |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5421555A (en) |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4954838A (en) * | 1972-09-29 | 1974-05-28 |
-
1977
- 1977-07-19 JP JP8566777A patent/JPS5421555A/en active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4954838A (en) * | 1972-09-29 | 1974-05-28 |
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