GB740467A - Improvements in current transformers - Google Patents
Improvements in current transformersInfo
- Publication number
- GB740467A GB740467A GB288053A GB288053A GB740467A GB 740467 A GB740467 A GB 740467A GB 288053 A GB288053 A GB 288053A GB 288053 A GB288053 A GB 288053A GB 740467 A GB740467 A GB 740467A
- Authority
- GB
- United Kingdom
- Prior art keywords
- winding
- transformers
- feb
- sections
- current transformers
- 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
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D207/00—Heterocyclic compounds containing five-membered rings not condensed with other rings, with one nitrogen atom as the only ring hetero atom
- C07D207/02—Heterocyclic compounds containing five-membered rings not condensed with other rings, with one nitrogen atom as the only ring hetero atom with only hydrogen or carbon atoms directly attached to the ring nitrogen atom
- C07D207/30—Heterocyclic compounds containing five-membered rings not condensed with other rings, with one nitrogen atom as the only ring hetero atom with only hydrogen or carbon atoms directly attached to the ring nitrogen atom having two double bonds between ring members or between ring members and non-ring members
- C07D207/34—Heterocyclic compounds containing five-membered rings not condensed with other rings, with one nitrogen atom as the only ring hetero atom with only hydrogen or carbon atoms directly attached to the ring nitrogen atom having two double bonds between ring members or between ring members and non-ring members with hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals, directly attached to ring carbon atoms
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/42—Circuits specially adapted for the purpose of modifying, or compensating for, electric characteristics of transformers, reactors, or choke coils
- H01F27/422—Circuits specially adapted for the purpose of modifying, or compensating for, electric characteristics of transformers, reactors, or choke coils for instrument transformers
- H01F27/427—Circuits specially adapted for the purpose of modifying, or compensating for, electric characteristics of transformers, reactors, or choke coils for instrument transformers for current transformers
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Transformers For Measuring Instruments (AREA)
Abstract
740,467. Transformers. FOSTER TRANSFORMERS, Ltd., COURTNEY, T., and GREEN, A. H. Feb. 2, 1954 [Feb. 2, 1953], No. 2880/53. Class 38 (2). To increase the accuracy of the transformation ratio of a current transformer an auxiliiary winding is provided on the transformer which winding is divided into a number of sections 4 ... 9 which sections are permanently connected together-preferably in parallel-but which have no electrical connection to any external circuit. Thus the flux in different parts of the core 1 is equalized irrespectively of whether or not a primary element 12 is asymmetrically placed with regard to a secondary winding 2.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB288053A GB740467A (en) | 1953-02-02 | 1953-02-02 | Improvements in current transformers |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB288053A GB740467A (en) | 1953-02-02 | 1953-02-02 | Improvements in current transformers |
Publications (1)
Publication Number | Publication Date |
---|---|
GB740467A true GB740467A (en) | 1955-11-16 |
Family
ID=9747743
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB288053A Expired GB740467A (en) | 1953-02-02 | 1953-02-02 | Improvements in current transformers |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB740467A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1494033A1 (en) * | 2003-07-03 | 2005-01-05 | Danaher Motion Stockholm AB | Low power consuming current measurements for high currents |
-
1953
- 1953-02-02 GB GB288053A patent/GB740467A/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1494033A1 (en) * | 2003-07-03 | 2005-01-05 | Danaher Motion Stockholm AB | Low power consuming current measurements for high currents |
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