JPS5238133A - Power off detection device for input power source in non-power off alt ernating power supply - Google Patents

Power off detection device for input power source in non-power off alt ernating power supply

Info

Publication number
JPS5238133A
JPS5238133A JP50112655A JP11265575A JPS5238133A JP S5238133 A JPS5238133 A JP S5238133A JP 50112655 A JP50112655 A JP 50112655A JP 11265575 A JP11265575 A JP 11265575A JP S5238133 A JPS5238133 A JP S5238133A
Authority
JP
Japan
Prior art keywords
power
ernating
alt
detection device
input
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
Application number
JP50112655A
Other languages
Japanese (ja)
Other versions
JPS5520459B2 (en
Inventor
Toshio Tanaka
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP50112655A priority Critical patent/JPS5238133A/en
Publication of JPS5238133A publication Critical patent/JPS5238133A/en
Publication of JPS5520459B2 publication Critical patent/JPS5520459B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Emergency Protection Circuit Devices (AREA)
  • Stand-By Power Supply Arrangements (AREA)

Abstract

PURPOSE: When no input power source exists instantaneously, a power back phenomenon generated if a synchronous motor is operated as a synchronous generator, shall be detected and the detection sensitivity be improved.
COPYRIGHT: (C)1977,JPO&Japio
JP50112655A 1975-09-19 1975-09-19 Power off detection device for input power source in non-power off alt ernating power supply Granted JPS5238133A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP50112655A JPS5238133A (en) 1975-09-19 1975-09-19 Power off detection device for input power source in non-power off alt ernating power supply

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP50112655A JPS5238133A (en) 1975-09-19 1975-09-19 Power off detection device for input power source in non-power off alt ernating power supply

Publications (2)

Publication Number Publication Date
JPS5238133A true JPS5238133A (en) 1977-03-24
JPS5520459B2 JPS5520459B2 (en) 1980-06-03

Family

ID=14592150

Family Applications (1)

Application Number Title Priority Date Filing Date
JP50112655A Granted JPS5238133A (en) 1975-09-19 1975-09-19 Power off detection device for input power source in non-power off alt ernating power supply

Country Status (1)

Country Link
JP (1) JPS5238133A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57128224A (en) * 1981-01-24 1982-08-09 Toyo Boseki False twisting process

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57128224A (en) * 1981-01-24 1982-08-09 Toyo Boseki False twisting process

Also Published As

Publication number Publication date
JPS5520459B2 (en) 1980-06-03

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