GB555739A - Improvements in and relating to current transformers - Google Patents
Improvements in and relating to current transformersInfo
- Publication number
- GB555739A GB555739A GB274142A GB274142A GB555739A GB 555739 A GB555739 A GB 555739A GB 274142 A GB274142 A GB 274142A GB 274142 A GB274142 A GB 274142A GB 555739 A GB555739 A GB 555739A
- Authority
- GB
- United Kingdom
- Prior art keywords
- core
- relating
- transformers
- current transformers
- primary
- 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
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Transformers For Measuring Instruments (AREA)
Abstract
555,739. Transformers. HOBSON, A., and SMITH & CO. (TRANSFORMERS), Ltd., F. C. March 2, 1942, No. 2741. [Class 38 (ii)] Phase angle and ratio errors are eliminated from a current transformer comprising a primary 1 and secondary 3 on a core 2 by injecting into the secondary circuit a voltage derived from a secondary 5 on the core 6 of a compensating transformer which is worked at all times below saturation and is excited by the current in the primary 1. This voltage, which is proportional to the flux in the core 6, is controlled by a tertiary 7 across which is connected an impedance 8.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB274142A GB555739A (en) | 1942-03-02 | 1942-03-02 | Improvements in and relating to current transformers |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB274142A GB555739A (en) | 1942-03-02 | 1942-03-02 | Improvements in and relating to current transformers |
Publications (1)
Publication Number | Publication Date |
---|---|
GB555739A true GB555739A (en) | 1943-09-06 |
Family
ID=9745006
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB274142A Expired GB555739A (en) | 1942-03-02 | 1942-03-02 | Improvements in and relating to current transformers |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB555739A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN111540574A (en) * | 2020-04-07 | 2020-08-14 | 浙江天际互感器有限公司 | Wide-range current transformer and manufacturing method thereof |
-
1942
- 1942-03-02 GB GB274142A patent/GB555739A/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN111540574A (en) * | 2020-04-07 | 2020-08-14 | 浙江天际互感器有限公司 | Wide-range current transformer and manufacturing method thereof |
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