LU63013A1 - - Google Patents
Info
- Publication number
- LU63013A1 LU63013A1 LU63013DA LU63013A1 LU 63013 A1 LU63013 A1 LU 63013A1 LU 63013D A LU63013D A LU 63013DA LU 63013 A1 LU63013 A1 LU 63013A1
- Authority
- LU
- Luxembourg
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
- G01R19/165—Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values
- G01R19/16566—Circuits and arrangements for comparing voltage or current with one or several thresholds and for indicating the result not covered by subgroups G01R19/16504, G01R19/16528, G01R19/16533
- G01R19/16571—Circuits and arrangements for comparing voltage or current with one or several thresholds and for indicating the result not covered by subgroups G01R19/16504, G01R19/16528, G01R19/16533 comparing AC or DC current with one threshold, e.g. load current, over-current, surge current or 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
- H01F38/30—Constructions
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- 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)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| LU63013 | 1971-04-19 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| LU63013A1 true LU63013A1 (en:Method) | 1972-12-11 |
Family
ID=19726681
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| LU63013D LU63013A1 (en:Method) | 1971-04-19 | 1971-04-19 |
Country Status (3)
| Country | Link |
|---|---|
| BE (1) | BE782318A (en:Method) |
| FR (1) | FR2133905A1 (en:Method) |
| LU (1) | LU63013A1 (en:Method) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH667557A5 (de) * | 1985-03-14 | 1988-10-14 | Sprecher Energie Ag | Hochspannungsschaltanlage. |
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1971
- 1971-04-19 LU LU63013D patent/LU63013A1/xx unknown
-
1972
- 1972-04-19 FR FR7213826A patent/FR2133905A1/fr not_active Withdrawn
- 1972-04-19 BE BE782318A patent/BE782318A/xx unknown
Also Published As
| Publication number | Publication date |
|---|---|
| BE782318A (en:Method) | 1972-08-16 |
| FR2133905A1 (en:Method) | 1972-12-01 |