FR2229134B3 - - Google Patents
Info
- Publication number
- FR2229134B3 FR2229134B3 FR7317832A FR7317832A FR2229134B3 FR 2229134 B3 FR2229134 B3 FR 2229134B3 FR 7317832 A FR7317832 A FR 7317832A FR 7317832 A FR7317832 A FR 7317832A FR 2229134 B3 FR2229134 B3 FR 2229134B3
- Authority
- FR
- France
- 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
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H83/00—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current
- H01H83/02—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current operated by earth fault currents
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- 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
- H02H3/32—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 corresponding points in different conductors of a single system, e.g. of currents in go and return conductors
- H02H3/33—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 corresponding points in different conductors of a single system, e.g. of currents in go and return conductors using summation current transformers
- H02H3/337—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 corresponding points in different conductors of a single system, e.g. of currents in go and return conductors using summation current transformers avoiding disconnection due to reactive fault currents
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Emergency Protection Circuit Devices (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR7317832A FR2229134A1 (en) | 1973-05-11 | 1973-05-11 | Earth leakage trip - cct. used with toroidal transformer for high sensitivity |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR7317832A FR2229134A1 (en) | 1973-05-11 | 1973-05-11 | Earth leakage trip - cct. used with toroidal transformer for high sensitivity |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| FR2229134A1 FR2229134A1 (en) | 1974-12-06 |
| FR2229134B3 true FR2229134B3 (en) | 1976-05-14 |
Family
ID=9119456
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR7317832A Granted FR2229134A1 (en) | 1973-05-11 | 1973-05-11 | Earth leakage trip - cct. used with toroidal transformer for high sensitivity |
Country Status (1)
| Country | Link |
|---|---|
| FR (1) | FR2229134A1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2530864B1 (en) * | 1982-07-26 | 1986-07-25 | Serd Soc Et Realisa Disjonct | METHOD FOR DELAYING THE OPERATION OF AN AUTOMATIC EARTH SWITCH WITH DIFFERENTIAL DEVICE AND AUTOMATIC EARTH SWITCH WITH DIFFERENTIAL DEVICE COMPRISING THE APPLICATION OF THE METHOD |
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1973
- 1973-05-11 FR FR7317832A patent/FR2229134A1/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| FR2229134A1 (en) | 1974-12-06 |