GB847299A - Improvements in or relating to current transformers of the premagnetisable core type - Google Patents

Improvements in or relating to current transformers of the premagnetisable core type

Info

Publication number
GB847299A
GB847299A GB845858A GB845858A GB847299A GB 847299 A GB847299 A GB 847299A GB 845858 A GB845858 A GB 845858A GB 845858 A GB845858 A GB 845858A GB 847299 A GB847299 A GB 847299A
Authority
GB
United Kingdom
Prior art keywords
windings
pair
premagnetisable
relating
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
Application number
GB845858A
Inventor
Erich Siegfried Friedlander
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.)
General Electric Co PLC
Original Assignee
General Electric Co PLC
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 General Electric Co PLC filed Critical General Electric Co PLC
Priority to GB845858A priority Critical patent/GB847299A/en
Publication of GB847299A publication Critical patent/GB847299A/en
Expired legal-status Critical Current

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
    • H01F38/32—Circuit arrangements
    • 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
    • H01F29/00—Variable transformers or inductances not covered by group H01F21/00
    • H01F29/14—Variable transformers or inductances not covered by group H01F21/00 with variable magnetic bias
    • H01F2029/143—Variable transformers or inductances not covered by group H01F21/00 with variable magnetic bias with control winding for generating magnetic bias

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Rectifiers (AREA)

Abstract

847,299. Transformers. GENERAL ELECTRIC CO. Ltd. Feb. 19, 1959 [March 17, 1958], No. 8458/58. Class 38 (2). A polyphase current transformer comprises a pair of cores 1 linked with each phase conductor 2 and having series-connected D.C. control windings 6, delta-connected secondary windings 3 and pairs of auxiliary windings 7 each pair being connected in series opposition in a closed circuit through a rectifier 8. The windings 7 develop even harmonic currents and the rectified currents produced therefrom assist the D.C. control currents in windings 6. The transformer may have only one pair of cores for single-phase use. Specification 835,924 is referred to.
GB845858A 1958-03-17 1958-03-17 Improvements in or relating to current transformers of the premagnetisable core type Expired GB847299A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB845858A GB847299A (en) 1958-03-17 1958-03-17 Improvements in or relating to current transformers of the premagnetisable core type

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB845858A GB847299A (en) 1958-03-17 1958-03-17 Improvements in or relating to current transformers of the premagnetisable core type

Publications (1)

Publication Number Publication Date
GB847299A true GB847299A (en) 1960-09-07

Family

ID=9852861

Family Applications (1)

Application Number Title Priority Date Filing Date
GB845858A Expired GB847299A (en) 1958-03-17 1958-03-17 Improvements in or relating to current transformers of the premagnetisable core type

Country Status (1)

Country Link
GB (1) GB847299A (en)

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