GB555739A - Improvements in and relating to current transformers - Google Patents

Improvements in and relating to current transformers

Info

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
Application number
GB274142A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
F C Smith & Co Transformers Lt
Original Assignee
F C Smith & Co Transformers Lt
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by F C Smith & Co Transformers Lt filed Critical F C Smith & Co Transformers Lt
Priority to GB274142A priority Critical patent/GB555739A/en
Publication of GB555739A publication Critical patent/GB555739A/en
Expired legal-status Critical Current

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.
GB274142A 1942-03-02 1942-03-02 Improvements in and relating to current transformers Expired GB555739A (en)

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)

* Cited by examiner, † Cited by third party
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

Cited By (1)

* Cited by examiner, † Cited by third party
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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