JPS52107549A - Differential current relay system - Google Patents
Differential current relay systemInfo
- Publication number
- JPS52107549A JPS52107549A JP2324576A JP2324576A JPS52107549A JP S52107549 A JPS52107549 A JP S52107549A JP 2324576 A JP2324576 A JP 2324576A JP 2324576 A JP2324576 A JP 2324576A JP S52107549 A JPS52107549 A JP S52107549A
- Authority
- JP
- Japan
- Prior art keywords
- current
- relay system
- differential current
- current relay
- workable
- 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
Links
Landscapes
- Emergency Protection Circuit Devices (AREA)
Abstract
PURPOSE: To provide a countermeasure for transient error of a current transformer causing the operational formula to be effective only for both values within a workable tolerance, by detecting second higher harmonic element of the differential output current and by phase comparing the current across each terminal for a current value exceeding a prescribed value.
COPYRIGHT: (C)1977,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2324576A JPS52107549A (en) | 1976-03-05 | 1976-03-05 | Differential current relay system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2324576A JPS52107549A (en) | 1976-03-05 | 1976-03-05 | Differential current relay system |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS52107549A true JPS52107549A (en) | 1977-09-09 |
Family
ID=12105203
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2324576A Pending JPS52107549A (en) | 1976-03-05 | 1976-03-05 | Differential current relay system |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS52107549A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH04364317A (en) * | 1991-06-11 | 1992-12-16 | Mitsubishi Electric Corp | Lock system for current differential relay |
-
1976
- 1976-03-05 JP JP2324576A patent/JPS52107549A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH04364317A (en) * | 1991-06-11 | 1992-12-16 | Mitsubishi Electric Corp | Lock system for current differential relay |
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