JPS57164512A - Three-phase transformer - Google Patents

Three-phase transformer

Info

Publication number
JPS57164512A
JPS57164512A JP4991381A JP4991381A JPS57164512A JP S57164512 A JPS57164512 A JP S57164512A JP 4991381 A JP4991381 A JP 4991381A JP 4991381 A JP4991381 A JP 4991381A JP S57164512 A JPS57164512 A JP S57164512A
Authority
JP
Japan
Prior art keywords
phase
winding
tap
windings
voltage
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.)
Pending
Application number
JP4991381A
Other languages
Japanese (ja)
Inventor
Masaru Ono
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura Electric 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 Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP4991381A priority Critical patent/JPS57164512A/en
Publication of JPS57164512A publication Critical patent/JPS57164512A/en
Pending 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
    • H01F29/04—Variable transformers or inductances not covered by group H01F21/00 with tappings on coil or winding; with provision for rearrangement or interconnection of windings having provision for tap-changing without interrupting the load current

Landscapes

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

Abstract

PURPOSE:To prevent an increase in current by a method wherein a three-phase transformer is composed of a three-phase main transformer and an adjusting transformer having tap windings and exciting windings and tap selectors and three phases connecting each-phase winding the tap windings, and the tap selectors in series are connected in different type to each other. CONSTITUTION:Tap winding 5U, 5V, 5W are connected to each phase high- voltage winding 1U, 1V, 1W in series respectively and exciting windings 7U, 7V, 7W are connected to each phase high-voltage winding 1U, 1V, 1W in parallel respectively, while tap selectors (LTC) 6U, 6V, 6W at ON-load are connected to each phase tap winding 5U, 5V, 5W respectively and each phase winding is connected in star type by a neutral lead 4 through these LTCs, 6U, 6V, 6W. Each phase exciting winding 7U, 7V, 7W and tap winding 5U, 5V, 5W are wound on the same iron core to compose an adjusting transformer and a voltage regulator at ON-load is composed by combining each phase LTC. In this way, an increase in current in the high-voltage windings and that in current in the low-voltage windings flowing into a main transformer can suppressed regardless of the magnitude of adjusting range.
JP4991381A 1981-04-02 1981-04-02 Three-phase transformer Pending JPS57164512A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4991381A JPS57164512A (en) 1981-04-02 1981-04-02 Three-phase transformer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4991381A JPS57164512A (en) 1981-04-02 1981-04-02 Three-phase transformer

Publications (1)

Publication Number Publication Date
JPS57164512A true JPS57164512A (en) 1982-10-09

Family

ID=12844245

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4991381A Pending JPS57164512A (en) 1981-04-02 1981-04-02 Three-phase transformer

Country Status (1)

Country Link
JP (1) JPS57164512A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6066945A (en) * 1996-12-25 2000-05-23 Legend Power Ltd. Method and device for automatically switching three-phase voltage for power saving transformer
CN106128725A (en) * 2016-08-17 2016-11-16 山东电工电气集团智能电气有限公司 A kind of it is applicable to the capacitance-adjustable transformer that seasonal or period load variations is clearly demarcated

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6066945A (en) * 1996-12-25 2000-05-23 Legend Power Ltd. Method and device for automatically switching three-phase voltage for power saving transformer
CN106128725A (en) * 2016-08-17 2016-11-16 山东电工电气集团智能电气有限公司 A kind of it is applicable to the capacitance-adjustable transformer that seasonal or period load variations is clearly demarcated

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