IT454583A - - Google Patents
Info
- Publication number
- IT454583A IT454583A IT454583DA IT454583A IT 454583 A IT454583 A IT 454583A IT 454583D A IT454583D A IT 454583DA IT 454583 A IT454583 A IT 454583A
- Authority
- IT
- Italy
Links
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
- H02H3/26—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to difference between voltages or between currents; responsive to phase angle between voltages or between currents
- H02H3/28—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to difference between voltages or between currents; responsive to phase angle between voltages or between currents involving comparison of the voltage or current values at two spaced portions of a single system, e.g. at opposite ends of one line, at input and output of apparatus
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Emergency Protection Circuit Devices (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US41657A US2548625A (en) | 1948-07-30 | 1948-07-30 | Differential protective arrangement |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| IT454583A true IT454583A (en:Method) |
Family
ID=49896271
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| IT454583D IT454583A (en:Method) | 1948-07-30 |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US2548625A (en:Method) |
| JP (1) | JPS29004577B1 (en:Method) |
| DE (1) | DE823752C (en:Method) |
| IT (1) | IT454583A (en:Method) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2804576A (en) * | 1953-05-06 | 1957-08-27 | Gen Electric | Electrical protective equipment |
| CA653827A (en) * | 1955-01-03 | 1962-12-11 | Westinghouse Electric Corporation | Circuit breaker trip circuits |
| US2967978A (en) * | 1958-04-28 | 1961-01-10 | Burroughs Corp | Power supply fault sensing and protective control circuit |
| US3183331A (en) * | 1961-03-27 | 1965-05-11 | Gen Electric | Automatic reclosing circuit breaker |
| US3992649A (en) * | 1975-02-10 | 1976-11-16 | General Electric Company | Current differential fault detection circuit |
| US4089033A (en) * | 1977-03-04 | 1978-05-09 | General Electric Company | High speed bus differential relay |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US618812A (en) * | 1899-01-31 | David j | ||
| US656680A (en) * | 1899-06-12 | 1900-08-28 | Gen Electric | System of electrical distribution. |
| DE442763C (de) * | 1922-03-22 | 1927-04-08 | Asea Ab | Anordnung zur Begrenzung oder Verminderung des Stromes in einem Teil eines Leitungsnetzes |
| FR702656A (fr) * | 1930-09-26 | 1931-04-14 | Union D Electricite | Protection différentielle des réseaux à courant continu |
| US2157886A (en) * | 1938-07-09 | 1939-05-09 | Westinghouse Electric & Mfg Co | Prevention of inductive interference |
| GB523603A (en) * | 1940-06-06 | 1940-07-18 | British Thomson Houston Co Ltd | Improvements in and relating to the protection of electric systems |
-
0
- IT IT454583D patent/IT454583A/it unknown
-
1948
- 1948-07-30 US US41657A patent/US2548625A/en not_active Expired - Lifetime
-
1949
- 1949-07-14 DE DEP48755A patent/DE823752C/de not_active Expired
- 1949-07-29 JP JP75194949A patent/JPS29004577B1/ja active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| JPS29004577B1 (en:Method) | 1954-07-23 |
| DE823752C (de) | 1951-12-06 |
| US2548625A (en) | 1951-04-10 |