JPH04140U - - Google Patents
Info
- Publication number
- JPH04140U JPH04140U JP4014090U JP4014090U JPH04140U JP H04140 U JPH04140 U JP H04140U JP 4014090 U JP4014090 U JP 4014090U JP 4014090 U JP4014090 U JP 4014090U JP H04140 U JPH04140 U JP H04140U
- Authority
- JP
- Japan
- Prior art keywords
- function check
- output
- start switch
- calculation
- relay
- 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 claims 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 1
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4014090U JPH04140U (en]) | 1990-04-13 | 1990-04-13 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4014090U JPH04140U (en]) | 1990-04-13 | 1990-04-13 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH04140U true JPH04140U (en]) | 1992-01-06 |
Family
ID=31549672
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4014090U Pending JPH04140U (en]) | 1990-04-13 | 1990-04-13 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH04140U (en]) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS552348A (en) * | 1978-06-21 | 1980-01-09 | Mitsubishi Electric Corp | Residual circuit monitoring system |
| JPS6045813A (ja) * | 1983-08-24 | 1985-03-12 | Toshiba Corp | 機器保護装置の点検方法 |
| JPS61170222A (ja) * | 1985-01-22 | 1986-07-31 | 株式会社明電舎 | デイジタル保護継電器における入力部点検回路 |
| JPS63148816A (ja) * | 1986-12-12 | 1988-06-21 | 株式会社東芝 | 保護継電器 |
| JPS63290120A (ja) * | 1987-05-21 | 1988-11-28 | Toshiba Corp | ディジタル形保護継電器 |
-
1990
- 1990-04-13 JP JP4014090U patent/JPH04140U/ja active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS552348A (en) * | 1978-06-21 | 1980-01-09 | Mitsubishi Electric Corp | Residual circuit monitoring system |
| JPS6045813A (ja) * | 1983-08-24 | 1985-03-12 | Toshiba Corp | 機器保護装置の点検方法 |
| JPS61170222A (ja) * | 1985-01-22 | 1986-07-31 | 株式会社明電舎 | デイジタル保護継電器における入力部点検回路 |
| JPS63148816A (ja) * | 1986-12-12 | 1988-06-21 | 株式会社東芝 | 保護継電器 |
| JPS63290120A (ja) * | 1987-05-21 | 1988-11-28 | Toshiba Corp | ディジタル形保護継電器 |