JPH0515134B2 - - Google Patents
Info
- Publication number
- JPH0515134B2 JPH0515134B2 JP58044713A JP4471383A JPH0515134B2 JP H0515134 B2 JPH0515134 B2 JP H0515134B2 JP 58044713 A JP58044713 A JP 58044713A JP 4471383 A JP4471383 A JP 4471383A JP H0515134 B2 JPH0515134 B2 JP H0515134B2
- Authority
- JP
- Japan
- Prior art keywords
- impedance
- current
- relay
- change rate
- circuit
- 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 - Lifetime
Links
Landscapes
- Emergency Protection Circuit Devices (AREA)
- Supply And Distribution Of Alternating Current (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58044713A JPS59169334A (ja) | 1983-03-17 | 1983-03-17 | インピ−ダンス変化率継電器 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58044713A JPS59169334A (ja) | 1983-03-17 | 1983-03-17 | インピ−ダンス変化率継電器 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS59169334A JPS59169334A (ja) | 1984-09-25 |
| JPH0515134B2 true JPH0515134B2 (2) | 1993-02-26 |
Family
ID=12699057
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP58044713A Granted JPS59169334A (ja) | 1983-03-17 | 1983-03-17 | インピ−ダンス変化率継電器 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59169334A (2) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01238417A (ja) * | 1988-03-17 | 1989-09-22 | Hitachi Ltd | 三相交流回路の脱調検出デイジタルリレー |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57142125A (en) * | 1981-02-25 | 1982-09-02 | Tohoku Electric Power Co | Digital protection relay display unit |
| JPS57154699A (en) * | 1981-03-03 | 1982-09-24 | Tektronix Inc | Sample-holding circuit |
-
1983
- 1983-03-17 JP JP58044713A patent/JPS59169334A/ja active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS59169334A (ja) | 1984-09-25 |
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