JPS5228642A - Protective relay - Google Patents
Protective relayInfo
- Publication number
- JPS5228642A JPS5228642A JP50104539A JP10453975A JPS5228642A JP S5228642 A JPS5228642 A JP S5228642A JP 50104539 A JP50104539 A JP 50104539A JP 10453975 A JP10453975 A JP 10453975A JP S5228642 A JPS5228642 A JP S5228642A
- Authority
- JP
- Japan
- Prior art keywords
- protective relay
- memory
- output
- power system
- sampling interval
- 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
- 230000001681 protective effect Effects 0.000 title abstract 2
- 238000005070 sampling Methods 0.000 abstract 1
Landscapes
- Emergency Protection Circuit Devices (AREA)
Abstract
PURPOSE: Protective relay where sampled value from power system is once input to memory and can be output after desired sampling interval.
COPYRIGHT: (C)1977,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP50104539A JPS5228642A (en) | 1975-08-30 | 1975-08-30 | Protective relay |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP50104539A JPS5228642A (en) | 1975-08-30 | 1975-08-30 | Protective relay |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5228642A true JPS5228642A (en) | 1977-03-03 |
Family
ID=14383287
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP50104539A Pending JPS5228642A (en) | 1975-08-30 | 1975-08-30 | Protective relay |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5228642A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS49117004A (en) * | 1973-03-10 | 1974-11-08 | ||
US4539562A (en) * | 1982-12-30 | 1985-09-03 | The Scott & Fetzer Company | Load current monitoring device for detecting predetermined degree of change in load impedance |
US5532042A (en) * | 1989-04-05 | 1996-07-02 | Hitachi Maxell, Ltd. | Magnetic recording medium |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5048442A (en) * | 1973-08-31 | 1975-04-30 |
-
1975
- 1975-08-30 JP JP50104539A patent/JPS5228642A/en active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5048442A (en) * | 1973-08-31 | 1975-04-30 |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS49117004A (en) * | 1973-03-10 | 1974-11-08 | ||
JPS5249961B2 (en) * | 1973-03-10 | 1977-12-21 | ||
US4539562A (en) * | 1982-12-30 | 1985-09-03 | The Scott & Fetzer Company | Load current monitoring device for detecting predetermined degree of change in load impedance |
US5532042A (en) * | 1989-04-05 | 1996-07-02 | Hitachi Maxell, Ltd. | Magnetic recording medium |
USRE38048E1 (en) * | 1989-04-05 | 2003-03-25 | Hitachi Maxell, Ltd. | Magnetic recording medium |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JPS5228642A (en) | Protective relay | |
JPS5251036A (en) | Hari removal with a paste based on starchy syru | |
JPS5270287A (en) | Automatic casting system of control meter in batch process | |
JPS5221630A (en) | Anti-overcurrent and starting device of dc power transmission system | |
JPS5228643A (en) | Digital protective relay | |
JPS51123491A (en) | Digital servo-control system | |
JPS5299044A (en) | Analogue memory circuit | |
JPS51114749A (en) | Water control device | |
JPS51150962A (en) | Analog output apparatus | |
JPS52125734A (en) | Distance relay device | |
JPS5251834A (en) | Input/output bus switching device | |
JPS5391357A (en) | Digital protective relay device | |
JPS52151843A (en) | Checking system of digital protective relay device | |
JPS5243959A (en) | Digital differential relay device | |
JPS5216156A (en) | Code conversion system | |
JPS51112777A (en) | Dry method of gas purification | |
JPS53108552A (en) | Hair curler | |
JPS53109463A (en) | A/d conversion system | |
JPS5238755A (en) | Connecting structure of exterior pannel and metal sash | |
JPS53129837A (en) | Digital relay with time limit characteristic | |
JPS5228641A (en) | Digital protective relay | |
JPS527639A (en) | Digital output unit | |
JPS5240755A (en) | Digital relay | |
JPS5237681A (en) | Low power sampling type control system | |
JPS52112266A (en) | Function switch circuit of digital circuit |