JPS6477418A - Protective relay device - Google Patents
Protective relay deviceInfo
- Publication number
- JPS6477418A JPS6477418A JP62235318A JP23531887A JPS6477418A JP S6477418 A JPS6477418 A JP S6477418A JP 62235318 A JP62235318 A JP 62235318A JP 23531887 A JP23531887 A JP 23531887A JP S6477418 A JPS6477418 A JP S6477418A
- Authority
- JP
- Japan
- Prior art keywords
- transformer
- magnetic sensor
- operate
- inhibit element
- protective relay
- 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
- Protection Of Transformers (AREA)
- Emergency Protection Circuit Devices (AREA)
Abstract
PURPOSE:To prevent malfunctioning due to an exciting rush current by detecting the magnetic saturation state of a transformer by means of a magnetic sensor to operate an inhibit element. CONSTITUTION:When an internal accident occurs in a transformer 1, a leakage flux, where an iron core is saturated magnetically, is not generated and the output inputted from a magnetic sensor 10 to an inhibit element 8 does not reach a prescribed level so that the inhibit element 8 does not operate. However, when an exciting rush current flows through the transformer 1 at the time of application of power PS to the transformer 1, the iron core of the transformer 1 is saturated magnetically. Consequently, leakage flux increases in the place, where the magnetic sensor 10 is arranged, so that the output of the magnetic sensor 10 increases to be inputted to the inhibit element 8. As a result, while an operating element 7 operates by the exciting rush current, the inhibit element 8 also operates to control operation of the operating element 7 so that a protective relay main body 6 does not operate. Therefore, the protective relay neither malfunctions nor actuates current side and load side breakers 2, 3 for breaking.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62235318A JPS6477418A (en) | 1987-09-17 | 1987-09-17 | Protective relay device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62235318A JPS6477418A (en) | 1987-09-17 | 1987-09-17 | Protective relay device |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6477418A true JPS6477418A (en) | 1989-03-23 |
Family
ID=16984330
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP62235318A Pending JPS6477418A (en) | 1987-09-17 | 1987-09-17 | Protective relay device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6477418A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2012143076A (en) * | 2010-12-28 | 2012-07-26 | Mitsubishi Heavy Ind Ltd | Control method and control apparatus of wind power generation system |
CN103107519A (en) * | 2011-11-14 | 2013-05-15 | 沈阳铝镁设计研究院有限公司 | Relay protection device of large-scale rectifier unit |
-
1987
- 1987-09-17 JP JP62235318A patent/JPS6477418A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2012143076A (en) * | 2010-12-28 | 2012-07-26 | Mitsubishi Heavy Ind Ltd | Control method and control apparatus of wind power generation system |
CN103107519A (en) * | 2011-11-14 | 2013-05-15 | 沈阳铝镁设计研究院有限公司 | Relay protection device of large-scale rectifier unit |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JPS57183526A (en) | Device for starting and for driving auxiliary machinery | |
JPS5695247A (en) | Image forming device | |
JPS6477418A (en) | Protective relay device | |
JPS6422477A (en) | Power source controller for inverter type resistance welding machine | |
JPS5687115A (en) | Switching power source | |
JPS5296441A (en) | Induction heating system | |
JPS5467655A (en) | Distribution line shortage protector | |
JPS5647819A (en) | Capacitor control circuit | |
JPS6336633Y2 (en) | ||
JPS5419114A (en) | Controller for induction motor | |
JPS6412720A (en) | Solid-state relay | |
JPS57180356A (en) | Exciter for synchronous machine | |
JPS52149743A (en) | Elevator starting control device | |
FR2377081A1 (en) | INDUCTIVE VOLTAGE TRANSFORMER WITH FERRORESONANCE PROTECTION | |
JPS5788266A (en) | Igniter for internal combustion engine | |
JPS57119678A (en) | Prevention of malfunction of inverter for system connection | |
JPS5484225A (en) | Switching power source circuit | |
JPS56138425A (en) | Maximum injected quantity controller with engine stop function | |
JPS57106306A (en) | Controller for inverter | |
TURCHI | Power circuit utilizing self-excited Hall effect switch means[Patent] | |
JPS55106090A (en) | Electric brake device at service interruption time | |
MY104655A (en) | Voltage regulator circuit for free voltage | |
JPS5681261A (en) | Auxiliary starter for diesel engine | |
JPS55149502A (en) | Control unit for magnetic flux | |
JPS54141992A (en) | Protective device of nuclear power plant |