GB259198A - Improvements in or relating to current transformers - Google Patents
Improvements in or relating to current transformersInfo
- Publication number
- GB259198A GB259198A GB22764/26A GB2276426A GB259198A GB 259198 A GB259198 A GB 259198A GB 22764/26 A GB22764/26 A GB 22764/26A GB 2276426 A GB2276426 A GB 2276426A GB 259198 A GB259198 A GB 259198A
- Authority
- GB
- United Kingdom
- Prior art keywords
- current
- winding
- primary
- currents
- measuring instrument
- 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
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Measuring Instrument Details And Bridges, And Automatic Balancing Devices (AREA)
- Transformers For Measuring Instruments (AREA)
Abstract
259,198. Metropolitan-Vickers Electrical Co., Ltd., (Assignees of Peters, J. F.). Oct. 1, 1925, [Convention date]. Transformers. - Relates to current transformers and consists in an arrangement for eliminating the effect of magnetizing current so as to obtain proportionality between the primary current and the current in the circuit of the measuring instrument. The arrangement comprises a main transformer unit having a primary winding 2 and secondary winding 4, and an auxiliary transformer unit having a primary winding 3 and secondary winding 5. The two secondaries are connected in series and are connected to an auxiliary load 7 comprising reactance and resistance. The measuring instrument 6 is connected across the main secondary winding 4 so that the current through the instrument is equal to the difference between the currents in the two secondary windings. By suitably dimensioning the iron in the two cores and the characteristics of the load 7, the arrangement is made such that the magnetizing currents in the two transformer units when considered in terms of secondary current are equal and neutralize each other in the circuit of the measuring instrument. The two cores may be combined in the form of a three limbed core having one primary and two secondary windings, and a tertiary winding may be employed instead of direct connection for effecting subtraction of the secondary currents.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US259198XA | 1925-10-01 | 1925-10-01 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB259198A true GB259198A (en) | 1927-03-24 |
Family
ID=21828777
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB22764/26A Expired GB259198A (en) | 1925-10-01 | 1926-09-15 | Improvements in or relating to current transformers |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB259198A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105572451A (en) * | 2014-10-29 | 2016-05-11 | 施耐德电气美国股份有限公司 | Self-correcting current transformer system |
-
1926
- 1926-09-15 GB GB22764/26A patent/GB259198A/en not_active Expired
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105572451A (en) * | 2014-10-29 | 2016-05-11 | 施耐德电气美国股份有限公司 | Self-correcting current transformer system |
| EP3023806A1 (en) * | 2014-10-29 | 2016-05-25 | Schneider Electric USA, Inc. | Self-correcting current transformer system |
| US9466417B2 (en) | 2014-10-29 | 2016-10-11 | Schneider Electric USA, Inc. | Self-correcting current transformer system |
| CN105572451B (en) * | 2014-10-29 | 2020-09-29 | 施耐德电气美国股份有限公司 | Self-correcting current transformer system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| GB259198A (en) | Improvements in or relating to current transformers | |
| GB306117A (en) | Improvements in current transformers | |
| GB309918A (en) | Improvements in and relating to current transformers | |
| GB222850A (en) | ||
| GB274895A (en) | Improvements in or relating to electric transformers | |
| GB411577A (en) | Improvements in and relating to current transformers | |
| GB315277A (en) | Improvements relating to electric transformers | |
| GB236343A (en) | Improvements in or relating to the electric protection of transformers | |
| GB493739A (en) | Improvements in and connected with magnetic circuits for electrical apparatus | |
| GB514890A (en) | Improvements in and relating to electric transformer | |
| GB272525A (en) | Improvements in or relating to electric transformers | |
| GB328904A (en) | Improvements in and relating to transformers | |
| GB277331A (en) | Improved arrangements for protecting electrical windings | |
| GB224873A (en) | Measuring high voltage from the low-voltage side of load transformers | |
| GB336862A (en) | Improvements relating to electric transformers | |
| GB340269A (en) | Improvements in and relating to electric transformers | |
| GB336147A (en) | Improvements in and relating to transformers | |
| GB190153A (en) | ||
| GB367715A (en) | An improved electric current transformer | |
| GB193434A (en) | Improvements in and relating to differentially acting electroresponsive apparatus | |
| GB547018A (en) | Improvements in windings for electric transformers | |
| GB514607A (en) | Elimination of the magnetic dispersion of transformers | |
| GB347414A (en) | Improvements in or relating to current transformers | |
| GB251998A (en) | Improvements in and relating to variable static transformers provided with a variable magnetic circuit | |
| GB338521A (en) | Improvements relating to measuring and like apparatus for use with electric circuits |