JPS56125821A - Stationary electric induction apparatus - Google Patents

Stationary electric induction apparatus

Info

Publication number
JPS56125821A
JPS56125821A JP2734980A JP2734980A JPS56125821A JP S56125821 A JPS56125821 A JP S56125821A JP 2734980 A JP2734980 A JP 2734980A JP 2734980 A JP2734980 A JP 2734980A JP S56125821 A JPS56125821 A JP S56125821A
Authority
JP
Japan
Prior art keywords
hole
shieldings
making
vertical magnetic
plural
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
JP2734980A
Other languages
Japanese (ja)
Inventor
Osamu Sakakura
Susumu Isaka
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 JP2734980A priority Critical patent/JPS56125821A/en
Publication of JPS56125821A publication Critical patent/JPS56125821A/en
Pending 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
    • H01F27/34—Special means for preventing or reducing unwanted electric or magnetic effects, e.g. no-load losses, reactive currents, harmonics, oscillations, leakage fields
    • H01F27/36—Electric or magnetic shields or screens
    • 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
    • H01F27/34—Special means for preventing or reducing unwanted electric or magnetic effects, e.g. no-load losses, reactive currents, harmonics, oscillations, leakage fields
    • H01F27/36—Electric or magnetic shields or screens
    • H01F27/366—Electric or magnetic shields or screens made of ferromagnetic material

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Regulation Of General Use Transformers (AREA)

Abstract

PURPOSE:To prevent overheating to be caused by leakage flux and to reduce stray loss improving the performance of the stationary electric induction apparatus by a method wherein plural long vertical magnetic shieldings and plural short horizontal magnetic shielding are connected alternately by lap connection at the circumference of a hole for leading out of winding. CONSTITUTION:The pocket hole 5 for leading out of lead wires 4 to be led out from the center part of the height of windings 2 is provided at a tank 3, and the magnetic shielding device 21 is equipped on the inside face of the wall of the tank 3 confronting with the winding 2 making the pocket hole 5 as the center. The shielding device 21 is constituted of rectangular vertical magnetic shieldings 11 consisted of piling up of silicon steel bands a little longer than the height of the windings 2, and of horizontal magnetic shieldings 12 shorter than the former. The plural vertical magnetic shieldings 11 are arranged on the right and the left side faces of the hole 5 making to have respectively some gap in the horizontal direction, and the holizontal magnetic shieldings 12 are arranged between thereof at the upper and the lower parts of the hole 5 making to have respectively some gap and are connected to the vertical magnetic shieldings 11 alternately by lap connection.
JP2734980A 1980-03-06 1980-03-06 Stationary electric induction apparatus Pending JPS56125821A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2734980A JPS56125821A (en) 1980-03-06 1980-03-06 Stationary electric induction apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2734980A JPS56125821A (en) 1980-03-06 1980-03-06 Stationary electric induction apparatus

Publications (1)

Publication Number Publication Date
JPS56125821A true JPS56125821A (en) 1981-10-02

Family

ID=12218555

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2734980A Pending JPS56125821A (en) 1980-03-06 1980-03-06 Stationary electric induction apparatus

Country Status (1)

Country Link
JP (1) JPS56125821A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104112572A (en) * 2014-04-30 2014-10-22 广州西门子变压器有限公司 Power transformer with winding magnetic-shielding device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104112572A (en) * 2014-04-30 2014-10-22 广州西门子变压器有限公司 Power transformer with winding magnetic-shielding device

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