GB306826A - Improvements in or relating to electric current transformers - Google Patents

Improvements in or relating to electric current transformers

Info

Publication number
GB306826A
GB306826A GB5927/29A GB592729A GB306826A GB 306826 A GB306826 A GB 306826A GB 5927/29 A GB5927/29 A GB 5927/29A GB 592729 A GB592729 A GB 592729A GB 306826 A GB306826 A GB 306826A
Authority
GB
United Kingdom
Prior art keywords
primary
core
transformer
windings
current
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
GB5927/29A
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.)
Siemens Schuckertwerke AG
Siemens AG
Original Assignee
Siemens Schuckertwerke AG
Siemens AG
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 Siemens Schuckertwerke AG, Siemens AG filed Critical Siemens Schuckertwerke AG
Publication of GB306826A publication Critical patent/GB306826A/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
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Transformers For Measuring Instruments (AREA)

Abstract

306,826. Siemens - Schuckertwerke Akt.-Ges. Feb. 25, 1928, [Convention date]. Void [Published under Se'ct. 91 of the Acts]. Current transformers are caused to operate on a desired part of the magnetization curve by the use of a premagnetizing winding energized by current supplied from an auxiliary transformer, the primary winding of which is in series with the primary of the main transformer and having its core so dimensioned that saturation is reached at low load so that the pre-magnetizing current is not greatly affected by load variations. The core of the current transformer is divided into parts 1, 2 both embraced by the primary and secondary windings 3, 4. The primary also embraces the core of the auxiliary transformer 8, the secondary 7 of which is connected to premagnetizing windings 5, 6 which are oppositely wound on the two main cores so that they " do not disturb the equilibrium of the primary and secondary ampere windings."
GB5927/29A 1928-02-25 1929-02-22 Improvements in or relating to electric current transformers Expired GB306826A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE306826X 1928-02-25

Publications (1)

Publication Number Publication Date
GB306826A true GB306826A (en) 1930-04-10

Family

ID=6121230

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5927/29A Expired GB306826A (en) 1928-02-25 1929-02-22 Improvements in or relating to electric current transformers

Country Status (1)

Country Link
GB (1) GB306826A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2866158A (en) * 1953-04-30 1958-12-23 Westinghouse Electric Corp Electrical measuring apparatus
US3170133A (en) * 1961-01-05 1965-02-16 Westinghouse Electric Corp Electrical inductive apparatus
EP2072393A1 (en) * 2007-12-21 2009-06-24 Siemens Aktiengesellschaft Electrical system for floating installation, in particular offshore vessel, with a feeding comprising a combined transformer for resistance grounding and transformer pre-magnetization

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2866158A (en) * 1953-04-30 1958-12-23 Westinghouse Electric Corp Electrical measuring apparatus
US3170133A (en) * 1961-01-05 1965-02-16 Westinghouse Electric Corp Electrical inductive apparatus
EP2072393A1 (en) * 2007-12-21 2009-06-24 Siemens Aktiengesellschaft Electrical system for floating installation, in particular offshore vessel, with a feeding comprising a combined transformer for resistance grounding and transformer pre-magnetization

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