BE742555A - - Google Patents
Info
- Publication number
- BE742555A BE742555A BE742555DA BE742555A BE 742555 A BE742555 A BE 742555A BE 742555D A BE742555D A BE 742555DA BE 742555 A BE742555 A BE 742555A
- Authority
- BE
- Belgium
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
- H02H3/32—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
- H02H3/332—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 with means responsive to dc component in the fault current
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F38/00—Adaptations of transformers or inductances for specific applications or functions
- H01F38/20—Instruments transformers
- H01F38/22—Instruments transformers for single phase ac
- H01F38/28—Current transformers
- H01F38/32—Circuit arrangements
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F29/00—Variable transformers or inductances not covered by group H01F21/00
- H01F29/14—Variable transformers or inductances not covered by group H01F21/00 with variable magnetic bias
- H01F2029/143—Variable transformers or inductances not covered by group H01F21/00 with variable magnetic bias with control winding for generating magnetic bias
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH1800968A CH505391A (en) | 1968-12-03 | 1968-12-03 | Device for monitoring current differences in an electrical system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE742555A true BE742555A (en) | 1970-05-14 |
Family
ID=4429738
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE742555D BE742555A (en) | 1968-12-03 | 1969-12-03 |
Country Status (5)
| Country | Link |
|---|---|
| BE (1) | BE742555A (en) |
| CH (1) | CH505391A (en) |
| DE (1) | DE1960290A1 (en) |
| FR (1) | FR2025082A1 (en) |
| NL (1) | NL6918114A (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2321208A1 (en) * | 1975-08-11 | 1977-03-11 | Saparel | Detection of leakage current to earth - uses differential current transformer whose core is saturated by leakage current |
| DE2602534A1 (en) * | 1976-01-23 | 1977-07-28 | Siemens Ag | FAULT CURRENT CIRCUIT BREAKER |
| LU78600A1 (en) * | 1977-11-28 | 1979-06-13 | Gath N | Fault current protection switch |
| LU78992A1 (en) * | 1978-02-02 | 1979-09-06 | N Gath | FAULT CIRCUIT BREAKER |
| JPS55127826A (en) * | 1979-03-26 | 1980-10-03 | Fuji Electric Co Ltd | Leakage breaker |
-
1968
- 1968-12-03 CH CH1800968A patent/CH505391A/en not_active IP Right Cessation
-
1969
- 1969-12-02 FR FR6941456A patent/FR2025082A1/fr not_active Withdrawn
- 1969-12-02 DE DE19691960290 patent/DE1960290A1/en active Pending
- 1969-12-02 NL NL6918114A patent/NL6918114A/xx unknown
- 1969-12-03 BE BE742555D patent/BE742555A/xx unknown
Also Published As
| Publication number | Publication date |
|---|---|
| FR2025082A1 (en) | 1970-09-04 |
| CH505391A (en) | 1971-03-31 |
| NL6918114A (en) | 1970-06-05 |
| DE1960290A1 (en) | 1970-06-18 |