JPH0127643B2 - - Google Patents
Info
- Publication number
- JPH0127643B2 JPH0127643B2 JP56063830A JP6383081A JPH0127643B2 JP H0127643 B2 JPH0127643 B2 JP H0127643B2 JP 56063830 A JP56063830 A JP 56063830A JP 6383081 A JP6383081 A JP 6383081A JP H0127643 B2 JPH0127643 B2 JP H0127643B2
- Authority
- JP
- Japan
- Prior art keywords
- relay
- circuit
- frequency
- undervoltage
- phase
- 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
Links
- 238000007689 inspection Methods 0.000 claims description 36
- 238000000034 method Methods 0.000 claims description 5
- 230000002159 abnormal effect Effects 0.000 claims 1
- 230000007423 decrease Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 8
- 238000012544 monitoring process Methods 0.000 description 4
- 238000001514 detection method Methods 0.000 description 3
- 230000007257 malfunction Effects 0.000 description 2
- 230000005856 abnormality Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
Landscapes
- Emergency Protection Circuit Devices (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56063830A JPS57180318A (en) | 1981-04-27 | 1981-04-27 | Automatic inspection system for frequency protective relay unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56063830A JPS57180318A (en) | 1981-04-27 | 1981-04-27 | Automatic inspection system for frequency protective relay unit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS57180318A JPS57180318A (en) | 1982-11-06 |
| JPH0127643B2 true JPH0127643B2 (cs) | 1989-05-30 |
Family
ID=13240656
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP56063830A Granted JPS57180318A (en) | 1981-04-27 | 1981-04-27 | Automatic inspection system for frequency protective relay unit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS57180318A (cs) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5305028A (en) * | 1990-04-24 | 1994-04-19 | Hitoshi Okano | Multifocal lens provided with progressive focal segment |
-
1981
- 1981-04-27 JP JP56063830A patent/JPS57180318A/ja active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS57180318A (en) | 1982-11-06 |
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