JPS5458848A - Circuit protector - Google Patents

Circuit protector

Info

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
Application number
JP12516077A
Other languages
Japanese (ja)
Inventor
Hideharu Okano
Takashi Shigemasa
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura Electric Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP12516077A priority Critical patent/JPS5458848A/en
Publication of JPS5458848A publication Critical patent/JPS5458848A/en
Pending legal-status Critical Current

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
JP12516077A 1977-10-20 1977-10-20 Circuit protector Pending JPS5458848A (en)

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)

* Cited by examiner, † Cited by third party
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.

Cited By (2)

* Cited by examiner, † Cited by third party
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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