FR1028937A - Perfectionnements apportés aux systèmes de protection sélective - Google Patents
Perfectionnements apportés aux systèmes de protection sélectiveInfo
- Publication number
- FR1028937A FR1028937A FR1028937DA FR1028937A FR 1028937 A FR1028937 A FR 1028937A FR 1028937D A FR1028937D A FR 1028937DA FR 1028937 A FR1028937 A FR 1028937A
- Authority
- FR
- France
- Prior art keywords
- protection systems
- selective protection
- selective
- systems
- protection
- 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
- 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
- H02H3/30—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 using pilot wires or other signalling channel
- H02H3/305—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 using pilot wires or other signalling channel involving current comparison
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR1028937T | 1950-08-29 |
Publications (1)
Publication Number | Publication Date |
---|---|
FR1028937A true FR1028937A (fr) | 1953-05-28 |
Family
ID=9581549
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR1028937D Expired FR1028937A (fr) | 1950-08-29 | 1950-08-29 | Perfectionnements apportés aux systèmes de protection sélective |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR1028937A (fr) |
-
1950
- 1950-08-29 FR FR1028937D patent/FR1028937A/fr not_active Expired
Similar Documents
Publication | Publication Date | Title |
---|---|---|
FR1048082A (fr) | Perfectionnements aux systèmes radioélectriques indicateurs de distance | |
FR1025940A (fr) | Perfectionnements aux systèmes téléphoniques automatiques | |
FR1048765A (fr) | Perfectionnements aux systèmes automatiques de télécommunication | |
FR1028937A (fr) | Perfectionnements apportés aux systèmes de protection sélective | |
FR1024443A (fr) | Perfectionnements aux systèmes radar | |
FR1041332A (fr) | Perfectionnements aux armures de sciage | |
FR1025462A (fr) | Perfectionnements aux systèmes éclairants | |
FR1025939A (fr) | Perfectionnements aux systèmes téléphoniques | |
FR986560A (fr) | Perfectionnements aux systèmes de détection radioélectrique | |
FR1044739A (fr) | Perfectionnements aux systèmes de transmission | |
FR61954E (fr) | Perfectionnements aux systèmes de téléphonie bilatérale en haut-parleur | |
FR1033649A (fr) | Perfectionnements aux systèmes de télévision | |
FR1039854A (fr) | Perfectionnements aux systèmes de débouchage | |
FR1110661A (fr) | Perfectionnements apportés aux systèmes de télécommunication | |
FR1054372A (fr) | Perfectionnements aux systèmes de télécommunication | |
FR1023467A (fr) | Perfectionnements aux systèmes téléphoniques | |
FR1017799A (fr) | Perfectionnements aux systèmes téléphoniques | |
FR1025592A (fr) | Perfectionnements aux systèmes téléphoniques | |
FR1022152A (fr) | Perfectionnements aux systèmes téléphoniques | |
FR1023584A (fr) | Perfectionnements aux systèmes téléphoniques | |
FR61136E (fr) | Perfectionnements aux systèmes de détection radioélectrique | |
FR1002740A (fr) | Perfectionnements aux systèmes de télémesure | |
FR986496A (fr) | Perfectionnements aux systèmes téléphoniques | |
FR1034793A (fr) | Perfectionnements aux systèmes transporteurs | |
FR1007314A (fr) | Perfectionnements aux systèmes de téléphonie en haut-parleurs |