FR638962A - Improvements in protection devices for electrical installations - Google Patents
Improvements in protection devices for electrical installationsInfo
- Publication number
- FR638962A FR638962A FR638962DA FR638962A FR 638962 A FR638962 A FR 638962A FR 638962D A FR638962D A FR 638962DA FR 638962 A FR638962 A FR 638962A
- Authority
- FR
- France
- Prior art keywords
- protection devices
- electrical installations
- installations
- electrical
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR638962T | 1927-08-04 |
Publications (1)
Publication Number | Publication Date |
---|---|
FR638962A true FR638962A (en) | 1928-06-08 |
Family
ID=8996410
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR638962D Expired FR638962A (en) | 1927-08-04 | 1927-08-04 | Improvements in protection devices for electrical installations |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR638962A (en) |
-
1927
- 1927-08-04 FR FR638962D patent/FR638962A/en not_active Expired
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