JPS6477415A - Digital protecting relay - Google Patents
Digital protecting relayInfo
- Publication number
- JPS6477415A JPS6477415A JP62229751A JP22975187A JPS6477415A JP S6477415 A JPS6477415 A JP S6477415A JP 62229751 A JP62229751 A JP 62229751A JP 22975187 A JP22975187 A JP 22975187A JP S6477415 A JPS6477415 A JP S6477415A
- Authority
- JP
- Japan
- Prior art keywords
- setting
- effective value
- unit
- function
- area
- 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
- 230000006870 function Effects 0.000 abstract 4
- 230000001681 protective effect Effects 0.000 abstract 2
Landscapes
- Emergency Protection Circuit Devices (AREA)
Abstract
PURPOSE:To obtain a multifunction protective relay unlimited by the scale of a function, by increasing the number of CPU units according to the scale of a function. CONSTITUTION:The function processed by a CPU unit 11 is to take in the digital value of an A/D converter 6, to extract a fundamental wave component, to convert it into an effective value, and to write it in the effective value area of a common memory unit 7. A CPU unit 12 inputs a setting from a panel 8, converts it into a format used internally, and thereafter writes it in the setting area of the common memory unit 7. A CPU unit 13 conducts a protective relay processing. That is, it reads the effective value from the effective value area of the common memory unit 7 and the setting from the setting area. Then, said unit 13 decides whether the value of the effective value area exceeds the setting and conducts a trip output via an output port 9 if it is connected for a certain period of time. When a function is added to increase a relay element, such relay element added to the program of the CPU unit 13 is to be added to an apparatus.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62229751A JPS6477415A (en) | 1987-09-16 | 1987-09-16 | Digital protecting relay |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62229751A JPS6477415A (en) | 1987-09-16 | 1987-09-16 | Digital protecting relay |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6477415A true JPS6477415A (en) | 1989-03-23 |
Family
ID=16897113
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP62229751A Pending JPS6477415A (en) | 1987-09-16 | 1987-09-16 | Digital protecting relay |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6477415A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0487523A (en) * | 1990-07-26 | 1992-03-19 | Nissin Electric Co Ltd | Overload detector for ac filter |
-
1987
- 1987-09-16 JP JP62229751A patent/JPS6477415A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0487523A (en) * | 1990-07-26 | 1992-03-19 | Nissin Electric Co Ltd | Overload detector for ac filter |
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