JPS54115748A - Static protective relaying equipment - Google Patents
Static protective relaying equipmentInfo
- Publication number
- JPS54115748A JPS54115748A JP2212878A JP2212878A JPS54115748A JP S54115748 A JPS54115748 A JP S54115748A JP 2212878 A JP2212878 A JP 2212878A JP 2212878 A JP2212878 A JP 2212878A JP S54115748 A JPS54115748 A JP S54115748A
- Authority
- JP
- Japan
- Prior art keywords
- voltage
- circuit
- output
- constitution
- modification
- 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
- Rectifiers (AREA)
- Protection Of Transformers (AREA)
- Emergency Protection Circuit Devices (AREA)
Abstract
PURPOSE: To facilitate the constitution or modification of a circuitry employing operational amplifiers, by connecting an AC circuit for producing the voltage signal and a DC circuit for rectifying the output from said AC circuit and performing the level detection to common potential.
CONSTITUTION: The input circuit I takes in the AC voltage through a current transformer 24 while the phase shifter J supplies a voltage 90° phase shifted from in-phase voltage to the rectifier K, which separates the voltage to positive and negative outputs then the positive output is inverted at the inverting amplifier L to negative output. Then it is supplied through the smoothing circuit M to the detecting level setter N to produce the functioning output for the protective relay. Here the AC side circuits I, J and the DC side circuits L, M are maintained through a signal line to common potential. Consequently such modification that a filter empolying an operational amplifier is inserted into AC side to take in specific frequency component can be made easily.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP53022128A JPS6036687B2 (en) | 1978-03-01 | 1978-03-01 | Static protective relay |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP53022128A JPS6036687B2 (en) | 1978-03-01 | 1978-03-01 | Static protective relay |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS54115748A true JPS54115748A (en) | 1979-09-08 |
JPS6036687B2 JPS6036687B2 (en) | 1985-08-22 |
Family
ID=12074240
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP53022128A Expired JPS6036687B2 (en) | 1978-03-01 | 1978-03-01 | Static protective relay |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6036687B2 (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60161388U (en) * | 1984-04-04 | 1985-10-26 | 豊田合成株式会社 | Automotive light emitting panel |
JPH01133186U (en) * | 1988-03-02 | 1989-09-11 | ||
JPH07210103A (en) * | 1994-01-21 | 1995-08-11 | Noda Denshi Kogyo Kk | Spontaneously luminous name plate |
-
1978
- 1978-03-01 JP JP53022128A patent/JPS6036687B2/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
JPS6036687B2 (en) | 1985-08-22 |
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