JPS55102213A - Transformer for double system meter - Google Patents

Transformer for double system meter

Info

Publication number
JPS55102213A
JPS55102213A JP826779A JP826779A JPS55102213A JP S55102213 A JPS55102213 A JP S55102213A JP 826779 A JP826779 A JP 826779A JP 826779 A JP826779 A JP 826779A JP S55102213 A JPS55102213 A JP S55102213A
Authority
JP
Japan
Prior art keywords
winding
short
voltage
flux
subwinding
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.)
Granted
Application number
JP826779A
Other languages
Japanese (ja)
Other versions
JPS5843889B2 (en
Inventor
Denji Tsubouchi
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 JP54008267A priority Critical patent/JPS5843889B2/en
Publication of JPS55102213A publication Critical patent/JPS55102213A/en
Publication of JPS5843889B2 publication Critical patent/JPS5843889B2/en
Expired legal-status Critical Current

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  • Transformers For Measuring Instruments (AREA)

Abstract

PURPOSE: To operate an inexpensive differential relay at high speed by making the subwinding terminal produce a sufficient residual voltage when the main winding is short-circuited.
CONSTITUTION: When voltage is applied to the terminal of winding 1, the iron cores 12, 13 are excited through the windings 8, 9. The cross-sectional areas of both the iron cores are the same, the number of turns of the winding 9 and coupling winding 10 is N and that of the coupling winding 11, main winding 2 and subwinding 3 is 2N respectively, each flux of the iron cores 12, 13 is a half of the flux ϕ generated by the voltage of winding 9. In this way, when the lead wire of the master winding 2 is short-circuited between F-F', a short-circuit current is fed from the primary winding 1 through the windings 8W11. A flux of (0.4W0.6) ϕ is generated in the winding 9 by the short-circuit current and leak impedance of the respective windings, it is eliminated in the core 12 by the short-circuit current and passes through the iron core 13. Since the subwinding 3 that produces a normal voltage at ϕ/2 in normal time produces a residual voltage of 0.8W1.2 times as much as the normal voltage by the additional flux, the differential relay 6 can sufficiently be operated.
COPYRIGHT: (C)1980,JPO&Japio
JP54008267A 1979-01-29 1979-01-29 Parent-child instrument transformer Expired JPS5843889B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP54008267A JPS5843889B2 (en) 1979-01-29 1979-01-29 Parent-child instrument transformer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP54008267A JPS5843889B2 (en) 1979-01-29 1979-01-29 Parent-child instrument transformer

Publications (2)

Publication Number Publication Date
JPS55102213A true JPS55102213A (en) 1980-08-05
JPS5843889B2 JPS5843889B2 (en) 1983-09-29

Family

ID=11688376

Family Applications (1)

Application Number Title Priority Date Filing Date
JP54008267A Expired JPS5843889B2 (en) 1979-01-29 1979-01-29 Parent-child instrument transformer

Country Status (1)

Country Link
JP (1) JPS5843889B2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6094390U (en) * 1983-12-05 1985-06-27 安藤　稔 Band-shaped solder for solder welding machine

Also Published As

Publication number Publication date
JPS5843889B2 (en) 1983-09-29

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