JPS5421548A - Phase comparison relay system - Google Patents
Phase comparison relay systemInfo
- Publication number
- JPS5421548A JPS5421548A JP8566177A JP8566177A JPS5421548A JP S5421548 A JPS5421548 A JP S5421548A JP 8566177 A JP8566177 A JP 8566177A JP 8566177 A JP8566177 A JP 8566177A JP S5421548 A JPS5421548 A JP S5421548A
- Authority
- JP
- Japan
- Prior art keywords
- phase comparison
- relay system
- comparison relay
- harmonics
- irrespective
- 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
- Emergency Protection Circuit Devices (AREA)
Abstract
PURPOSE: To permit reliable detection of a trouble irrespective of whether or not harmonics are present by arranging such that when a frequency component other than the fundamental frequency of a power system is detected the detection level is changed by controlling a phase comparison signal.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8566177A JPS5421548A (en) | 1977-07-19 | 1977-07-19 | Phase comparison relay system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8566177A JPS5421548A (en) | 1977-07-19 | 1977-07-19 | Phase comparison relay system |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5421548A true JPS5421548A (en) | 1979-02-17 |
JPS5712374B2 JPS5712374B2 (en) | 1982-03-10 |
Family
ID=13865002
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP8566177A Granted JPS5421548A (en) | 1977-07-19 | 1977-07-19 | Phase comparison relay system |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5421548A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60180189A (en) * | 1984-10-29 | 1985-09-13 | セイコーエプソン株式会社 | Connecting structure for electric element |
-
1977
- 1977-07-19 JP JP8566177A patent/JPS5421548A/en active Granted
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60180189A (en) * | 1984-10-29 | 1985-09-13 | セイコーエプソン株式会社 | Connecting structure for electric element |
JPS6127902B2 (en) * | 1984-10-29 | 1986-06-27 | Suwa Seikosha Kk |
Also Published As
Publication number | Publication date |
---|---|
JPS5712374B2 (en) | 1982-03-10 |
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