JPS55102214A - Transformer for double system meter - Google Patents
Transformer for double system meterInfo
- Publication number
- JPS55102214A JPS55102214A JP826879A JP826879A JPS55102214A JP S55102214 A JPS55102214 A JP S55102214A JP 826879 A JP826879 A JP 826879A JP 826879 A JP826879 A JP 826879A JP S55102214 A JPS55102214 A JP S55102214A
- Authority
- JP
- Japan
- Prior art keywords
- winding
- voltage
- windings
- subwinding
- flux
- 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
Links
Landscapes
- Transformers For Measuring Instruments (AREA)
Abstract
PURPOSE: To operate an inexpensive voltage differential relay by making the subwinding (main winding) produce a residual voltage that is the same extent as the voltage in a normal time even when the lead wire of main winding (subwinding) is short-circuited.
CONSTITUTION: When voltage is applied to the primary winding 1, voltage is produced in the main winding 2 and subwinding 3 through the windings 8, 9 and iron cores 12, 13. Also the coupling windings 10, 11 are provided for stabilizing the voltage of winding 2. The cross-sectional areas of both the iron cores 12, 13 are the same, the number of turns of the windings 8, 9, 10 is N and that of the windings 2, 3, 11 is 2N. When the iron cores 12, 13 are excited by the winding 9, each flux in the cores 12, 13 is a half of the flux ϕ of the winding 9 by actions of the windings 10, 11. When the lead wire 7 of the master winding 2 is short-circuited, a flux of (0.4W0.6) ϕ is generated in the winding 9 by the leak impedance of respective windings 1, 2, 10, 11 and the short-circuit current, it is eliminated in the core 12 and passes through the core 13. Accordingly a residual voltage of 0.8W 1.2 times as much as the normal voltage can be obtained, an inexpensive differential relay can sufficiently be operated.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP54008268A JPS5843890B2 (en) | 1979-01-29 | 1979-01-29 | Parent-child instrument transformer |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP54008268A JPS5843890B2 (en) | 1979-01-29 | 1979-01-29 | Parent-child instrument transformer |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS55102214A true JPS55102214A (en) | 1980-08-05 |
JPS5843890B2 JPS5843890B2 (en) | 1983-09-29 |
Family
ID=11688407
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP54008268A Expired JPS5843890B2 (en) | 1979-01-29 | 1979-01-29 | Parent-child instrument transformer |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5843890B2 (en) |
-
1979
- 1979-01-29 JP JP54008268A patent/JPS5843890B2/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
JPS5843890B2 (en) | 1983-09-29 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JPS5562717A (en) | Three-winding transformer | |
JPS55102214A (en) | Transformer for double system meter | |
JPS55102213A (en) | Transformer for double system meter | |
JPS55102215A (en) | Transformer for double system meter | |
JPS5420786A (en) | Magnetizing device for magnetic inspecter | |
FR2321208A1 (en) | Detection of leakage current to earth - uses differential current transformer whose core is saturated by leakage current | |
JPS5577117A (en) | Coil winding by using plural coated conductor | |
DE3067017D1 (en) | Measuring arrangement for electric currents | |
JPS5246433A (en) | Transformer or choke coil | |
JPS5249416A (en) | Three phase wound core type transformer | |
JPS529824A (en) | Transformer | |
JPS5561013A (en) | Transformer for double-windings instrument | |
JPS54124224A (en) | Parent-and-child type transformer for use in meters | |
JPS5561015A (en) | Transformer for double-windings instrument | |
JPS54124228A (en) | Parent-and-child type transformer for use in meters | |
JPS5561016A (en) | Transformer for double-windings instrument | |
JPS5467416A (en) | Magnetic head | |
JPS54148224A (en) | Zero-phase-sequence current transformer | |
GB661340A (en) | Improvements in and relating to electric transformers | |
JPS54125452A (en) | Transformer for double measuring instruments | |
GB493739A (en) | Improvements in and connected with magnetic circuits for electrical apparatus | |
JPS55107327A (en) | Pulse generator | |
GB259198A (en) | Improvements in or relating to current transformers | |
JPS5383017A (en) | Transformer circuit | |
JPS5561014A (en) | Transformer for double-windings instrument |