FR881766A - Perfectionnements aux commutateurs électromagnétiques différentiels - Google Patents
Perfectionnements aux commutateurs électromagnétiques différentielsInfo
- Publication number
- FR881766A FR881766A FR881766DA FR881766A FR 881766 A FR881766 A FR 881766A FR 881766D A FR881766D A FR 881766DA FR 881766 A FR881766 A FR 881766A
- Authority
- FR
- France
- Prior art keywords
- electromagnetic switches
- differential electromagnetic
- differential
- switches
- electromagnetic
- 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
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
- H02H7/0455—Differential protection of transformers taking into account saturation of current transformers
-
- 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)
- Protection Of Transformers (AREA)
- Emergency Protection Circuit Devices (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE228757X | 1941-05-05 |
Publications (1)
Publication Number | Publication Date |
---|---|
FR881766A true FR881766A (fr) | 1943-05-07 |
Family
ID=20305632
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR881766D Expired FR881766A (fr) | 1941-05-05 | 1942-05-05 | Perfectionnements aux commutateurs électromagnétiques différentiels |
Country Status (4)
Country | Link |
---|---|
CH (1) | CH228757A (fr) |
DE (1) | DE762983C (fr) |
FR (1) | FR881766A (fr) |
GB (1) | GB554210A (fr) |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE612747C (de) * | 1928-08-04 | 1935-05-03 | Siemens & Halske Akt Ges | Differentialschutzanordnung fuer Teile einer elektrischen Anlage |
-
1942
- 1942-04-10 CH CH228757D patent/CH228757A/de unknown
- 1942-04-11 DE DEST61716D patent/DE762983C/de not_active Expired
- 1942-04-16 GB GB5044/42A patent/GB554210A/en not_active Expired
- 1942-05-05 FR FR881766D patent/FR881766A/fr not_active Expired
Also Published As
Publication number | Publication date |
---|---|
CH228757A (de) | 1943-09-15 |
GB554210A (en) | 1943-06-24 |
DE762983C (de) | 1953-06-22 |
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