JPS459971Y1 - - Google Patents
Info
- Publication number
- JPS459971Y1 JPS459971Y1 JP1966108668U JP10866866U JPS459971Y1 JP S459971 Y1 JPS459971 Y1 JP S459971Y1 JP 1966108668 U JP1966108668 U JP 1966108668U JP 10866866 U JP10866866 U JP 10866866U JP S459971 Y1 JPS459971 Y1 JP S459971Y1
- Authority
- JP
- Japan
- 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
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/04—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for transformers
- H02H7/045—Differential protection of transformers
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Emergency Protection Circuit Devices (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US232132A US3218516A (en) | 1962-10-22 | 1962-10-22 | Protective relays |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS459971Y1 true JPS459971Y1 (ja) | 1970-05-08 |
Family
ID=22871987
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1966108668U Expired JPS459971Y1 (ja) | 1962-10-22 | 1966-11-29 |
Country Status (2)
| Country | Link |
|---|---|
| US (1) | US3218516A (ja) |
| JP (1) | JPS459971Y1 (ja) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5421554A (en) * | 1977-07-19 | 1979-02-17 | Toshiba Corp | Protective relay |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3327170A (en) * | 1963-10-21 | 1967-06-20 | Westinghouse Electric Corp | Broken conductor sensing device |
| US3337772A (en) * | 1963-12-28 | 1967-08-22 | Asea Ab | Transformer differential protection |
| US3414772A (en) * | 1966-06-29 | 1968-12-03 | Westinghouse Electric Corp | Differential relay with restraining means responsive to transformer bank voltage |
| JPS5597135A (en) * | 1979-01-17 | 1980-07-24 | Fuji Electric Co Ltd | Rush current detecting system |
| JPS60180421A (ja) * | 1984-02-27 | 1985-09-14 | 三菱電機株式会社 | 差動保護継電装置 |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1929059A (en) * | 1931-12-17 | 1933-10-03 | Gerald Alan S Fitz | Electric fault responsive apparatus |
| DE744451C (de) * | 1940-06-06 | 1944-01-15 | Aeg | Differentialschutzeinrichtung |
| US2863100A (en) * | 1955-11-23 | 1958-12-02 | Gen Electric | Protective relaying equipment |
-
1962
- 1962-10-22 US US232132A patent/US3218516A/en not_active Expired - Lifetime
-
1966
- 1966-11-29 JP JP1966108668U patent/JPS459971Y1/ja not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5421554A (en) * | 1977-07-19 | 1979-02-17 | Toshiba Corp | Protective relay |
Also Published As
| Publication number | Publication date |
|---|---|
| US3218516A (en) | 1965-11-16 |