ZA747843B - Improvements in or relating to current-measuring devices - Google Patents
Improvements in or relating to current-measuring devicesInfo
- Publication number
- ZA747843B ZA747843B ZA00747843A ZA747843A ZA747843B ZA 747843 B ZA747843 B ZA 747843B ZA 00747843 A ZA00747843 A ZA 00747843A ZA 747843 A ZA747843 A ZA 747843A ZA 747843 B ZA747843 B ZA 747843B
- Authority
- ZA
- South Africa
- Prior art keywords
- relating
- current
- measuring devices
- measuring
- devices
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M5/00—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases
- H02M5/02—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc
- H02M5/04—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc by static converters
- H02M5/06—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc by static converters using impedances
- H02M5/08—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc by static converters using impedances using capacitors only
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R15/00—Details of measuring arrangements of the types provided for in groups G01R17/00 - G01R29/00, G01R33/00 - G01R33/26 or G01R35/00
- G01R15/14—Adaptations providing voltage or current isolation, e.g. for high-voltage or high-current networks
- G01R15/18—Adaptations providing voltage or current isolation, e.g. for high-voltage or high-current networks using inductive devices, e.g. transformers
- G01R15/181—Adaptations providing voltage or current isolation, e.g. for high-voltage or high-current networks using inductive devices, e.g. transformers using coils without a magnetic core, e.g. Rogowski coils
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measuring Instrument Details And Bridges, And Automatic Balancing Devices (AREA)
- Transformers For Measuring Instruments (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE2363931A DE2363931C3 (de) | 1973-12-20 | 1973-12-20 | Strommeßeinrichtung |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| ZA747843B true ZA747843B (en) | 1975-12-31 |
Family
ID=5901621
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| ZA00747843A ZA747843B (en) | 1973-12-20 | 1974-12-10 | Improvements in or relating to current-measuring devices |
Country Status (10)
| Country | Link |
|---|---|
| JP (1) | JPS5097370A (xx) |
| AT (1) | AT340529B (xx) |
| BE (1) | BE823714A (xx) |
| CH (1) | CH576642A5 (xx) |
| DE (1) | DE2363931C3 (xx) |
| FR (1) | FR2255603B1 (xx) |
| GB (1) | GB1453679A (xx) |
| NL (1) | NL7416592A (xx) |
| SE (1) | SE401274B (xx) |
| ZA (1) | ZA747843B (xx) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU4414579A (en) * | 1978-02-22 | 1979-08-30 | General Electric Company Limited, The | Carrier domain current transducer |
| CA1277371C (en) * | 1984-07-02 | 1990-12-04 | Graham J. Clarke | High voltage apparatus |
| FR2599195B1 (fr) * | 1986-05-26 | 1992-10-30 | Merlin Gerin | Capteur de courant pour un declencheur statique |
| DE3712190A1 (de) * | 1987-04-10 | 1988-10-27 | Bbc Brown Boveri & Cie | Elektrischer wandler |
| DE4101858C1 (xx) * | 1991-01-23 | 1992-05-14 | Abb Patent Gmbh, 6800 Mannheim, De | |
| DE4122332A1 (de) * | 1991-04-22 | 1992-10-29 | Asea Brown Boveri | Stromwandler fuer eine mittel- oder hochspannungsanlage |
| FR2688931B1 (fr) * | 1992-03-19 | 1995-07-07 | Merlin Gerin | Combine de mesure a capteur de courant et transformateur d'alimentation. |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3346811A (en) * | 1964-02-24 | 1967-10-10 | Allis Chalmers Mfg Co | Means for sensing conditions in high potential region and for transmitting such intelligence by light means to low potential regions |
-
1973
- 1973-12-20 DE DE2363931A patent/DE2363931C3/de not_active Expired
-
1974
- 1974-10-02 GB GB4268874A patent/GB1453679A/en not_active Expired
- 1974-10-04 AT AT800674A patent/AT340529B/de not_active IP Right Cessation
- 1974-11-11 SE SE7414132A patent/SE401274B/xx unknown
- 1974-12-09 FR FR7440219A patent/FR2255603B1/fr not_active Expired
- 1974-12-10 ZA ZA00747843A patent/ZA747843B/xx unknown
- 1974-12-12 CH CH1652074A patent/CH576642A5/xx not_active IP Right Cessation
- 1974-12-19 NL NL7416592A patent/NL7416592A/xx not_active Application Discontinuation
- 1974-12-19 JP JP49146663A patent/JPS5097370A/ja active Pending
- 1974-12-20 BE BE151818A patent/BE823714A/xx unknown
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5097370A (xx) | 1975-08-02 |
| CH576642A5 (xx) | 1976-06-15 |
| GB1453679A (en) | 1976-10-27 |
| FR2255603B1 (xx) | 1978-04-14 |
| DE2363931B2 (de) | 1978-11-30 |
| BE823714A (fr) | 1975-04-16 |
| NL7416592A (nl) | 1975-06-24 |
| SE7414132L (xx) | 1975-06-23 |
| ATA800674A (de) | 1977-04-15 |
| DE2363931A1 (de) | 1975-06-26 |
| FR2255603A1 (xx) | 1975-07-18 |
| AU7614174A (en) | 1976-06-10 |
| AT340529B (de) | 1977-12-27 |
| DE2363931C3 (de) | 1979-08-02 |
| SE401274B (sv) | 1978-04-24 |
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