JPS54124227A - Parent-and-child type transformer for use in meters - Google Patents
Parent-and-child type transformer for use in metersInfo
- Publication number
- JPS54124227A JPS54124227A JP3170478A JP3170478A JPS54124227A JP S54124227 A JPS54124227 A JP S54124227A JP 3170478 A JP3170478 A JP 3170478A JP 3170478 A JP3170478 A JP 3170478A JP S54124227 A JPS54124227 A JP S54124227A
- Authority
- JP
- Japan
- Prior art keywords
- winding
- main winding
- differential relay
- voltage
- parent
- 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 make it possible to use the conventional differential relay at sufficient sensitivity, by connecting imedance in series with at least either one of the main winding circuit or the secondary winding circuit, and thereby increasing the voltage of the secondary winding when the main winding is short-circuited.
CONSTITUTION: Impedance is connected in series with at least either one of main winding 2 connected with a protective relay or auxiliary winding 3 connected with a voltage differential relay, of the two secondary windings 2 and 3 fitted to the same iron core 4. For example, impedance (Z) 7 is connected with the circuit of main winding 2 only. By this, the voltage of auxiliary winding 3 is increased when main winding 2 is short-circuited due to insulation breakdown, and it is possible to use a conventional simple differential relay without requiring a high-sensitivity differential relay.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3170478A JPS54124227A (en) | 1978-03-22 | 1978-03-22 | Parent-and-child type transformer for use in meters |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3170478A JPS54124227A (en) | 1978-03-22 | 1978-03-22 | Parent-and-child type transformer for use in meters |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS54124227A true JPS54124227A (en) | 1979-09-27 |
JPS617005B2 JPS617005B2 (en) | 1986-03-03 |
Family
ID=12338445
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP3170478A Granted JPS54124227A (en) | 1978-03-22 | 1978-03-22 | Parent-and-child type transformer for use in meters |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS54124227A (en) |
-
1978
- 1978-03-22 JP JP3170478A patent/JPS54124227A/en active Granted
Also Published As
Publication number | Publication date |
---|---|
JPS617005B2 (en) | 1986-03-03 |
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