JPS5458848A - Circuit protector - Google Patents
Circuit protectorInfo
- Publication number
- JPS5458848A JPS5458848A JP12516077A JP12516077A JPS5458848A JP S5458848 A JPS5458848 A JP S5458848A JP 12516077 A JP12516077 A JP 12516077A JP 12516077 A JP12516077 A JP 12516077A JP S5458848 A JPS5458848 A JP S5458848A
- Authority
- JP
- Japan
- Prior art keywords
- switch
- overcurrent
- series circuit
- overcurrent breaker
- breaker
- 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 enhance reliability of overcurrent protection by connecting in parallel the series circuit for the first overcurrent breaker and switch and the series circuit for the secondary overcurrent breaker and switch and by switching them by means of the output of current detector.
CONSTITUTION: On the line 10, the series circuit 11 consisting of the first overcurrent breaker 4 and switch 5 and the series circuit 12 consisting of the secondary overcurrent breaker 7 and the switch 6 are connected in parallel, and the output of the current detector 3 is given to the curent variation detector 8 and the delay switching relay 9 to open and colse the switches 5 and 6. Thus, when load 2, such as motor is connected and current is rapidly raised, the delay switching relay 9 begins to operate to make the switch 5 OFF and make the switch 6 ON, whereby current is supplied through the overcurrent breaker 7 of a great interrupting capacity and when overcurrent reduces it is switched to the overcurrent breaker 4 of a samll interrupting capacity, thus permitting the enhancement of its stability and reliability
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12516077A JPS5458848A (en) | 1977-10-20 | 1977-10-20 | Circuit protector |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12516077A JPS5458848A (en) | 1977-10-20 | 1977-10-20 | Circuit protector |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5458848A true JPS5458848A (en) | 1979-05-11 |
Family
ID=14903352
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP12516077A Pending JPS5458848A (en) | 1977-10-20 | 1977-10-20 | Circuit protector |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5458848A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP6200116B1 (en) * | 2017-05-13 | 2017-09-20 | 丸井 智敬 | Emergency power protection device and emergency power control device. |
-
1977
- 1977-10-20 JP JP12516077A patent/JPS5458848A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP6200116B1 (en) * | 2017-05-13 | 2017-09-20 | 丸井 智敬 | Emergency power protection device and emergency power control device. |
JP2018196186A (en) * | 2017-05-13 | 2018-12-06 | 丸井 智敬 | Protective device for emergency power supply and power controller for emergency power supply |
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