GB638984A - Improvements in and relating to electric transformers - Google Patents

Improvements in and relating to electric transformers

Info

Publication number
GB638984A
GB638984A GB31378/46A GB3137846A GB638984A GB 638984 A GB638984 A GB 638984A GB 31378/46 A GB31378/46 A GB 31378/46A GB 3137846 A GB3137846 A GB 3137846A GB 638984 A GB638984 A GB 638984A
Authority
GB
United Kingdom
Prior art keywords
transformer
reactance
switches
coarse
oct
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
GB31378/46A
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.)
British Thomson Houston Co Ltd
Original Assignee
British Thomson Houston Co Ltd
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 British Thomson Houston Co Ltd filed Critical British Thomson Houston Co Ltd
Publication of GB638984A publication Critical patent/GB638984A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • H01F29/02—Variable transformers or inductances not covered by group H01F21/00 with tappings on coil or winding; with provision for rearrangement or interconnection of windings
    • H01F29/025—Constructional details of transformers or reactors with tapping on coil or windings
    • 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
    • H01F29/02—Variable transformers or inductances not covered by group H01F21/00 with tappings on coil or winding; with provision for rearrangement or interconnection of windings
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M5/00—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases
    • H02M5/02—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc
    • H02M5/04—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc by static converters
    • H02M5/06—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc by static converters using impedances
    • H02M5/08—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc by static converters using impedances using capacitors only

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Control Of Electrical Variables (AREA)

Abstract

638,984. Transformers. BRITISH THOMSON-HOUSTON CO., Ltd. Oct. 22, 1946, No. 31378. Convention date, Oct. 22, 1945. [Class 38 (ii)] A transformer for use in a potential derivation device comprising a capacitance potentiometer 2, 3 has means whereby the reactance of the transformer may be adjusted at constant voltage ratio and the voltage ratio adjusted at constant reactance. The serially connected secondary windings 6, 7 are respectively closely and loosely coupled to the primary winding 5, the loose coupling being effected by magnetic shunts, and, in order that the transformer reactance may be tuned to that of the potentiometer, thereby reducing the regulation of the device to a minimum, coarse and fine tapchanging switches 9, 10 having rotatory movements are provided. To adjust the voltage at the load 8, coarse and fine tap-changing switches 11, 12 having translatory movements are provided. In a modification, the seriallyconnected windings 6, 7 together with the tapchanging switches 9, 10 are on the primary side of the transformer. Three arrangements of the elements of the transformer are described in the Specification.
GB31378/46A 1945-10-22 1946-10-22 Improvements in and relating to electric transformers Expired GB638984A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US638984XA 1945-10-22 1945-10-22

Publications (1)

Publication Number Publication Date
GB638984A true GB638984A (en) 1950-06-21

Family

ID=22052229

Family Applications (1)

Application Number Title Priority Date Filing Date
GB31378/46A Expired GB638984A (en) 1945-10-22 1946-10-22 Improvements in and relating to electric transformers

Country Status (2)

Country Link
FR (1) FR939350A (en)
GB (1) GB638984A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1056258B (en) * 1952-10-07 1959-04-30 Siemens Ag Short-circuit proof rectifier arrangement
DE1090307B (en) * 1958-09-30 1960-10-06 Siemens Ag Regulating transformer with tube winding

Also Published As

Publication number Publication date
FR939350A (en) 1948-11-10

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