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JPS5582063A - Motor failure detector - Google Patents

Motor failure detector

Info

Publication number
JPS5582063A
JPS5582063A JP15711678A JP15711678A JPS5582063A JP S5582063 A JPS5582063 A JP S5582063A JP 15711678 A JP15711678 A JP 15711678A JP 15711678 A JP15711678 A JP 15711678A JP S5582063 A JPS5582063 A JP S5582063A
Authority
JP
Japan
Prior art keywords
voltage
circuit
current
winding
motor
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
JP15711678A
Other languages
Japanese (ja)
Other versions
JPS596396B2 (en
Inventor
Isao Endo
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.)
FUORESUTO KK
Original Assignee
FUORESUTO KK
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 FUORESUTO KK filed Critical FUORESUTO KK
Priority to JP53157116A priority Critical patent/JPS596396B2/en
Publication of JPS5582063A publication Critical patent/JPS5582063A/en
Publication of JPS596396B2 publication Critical patent/JPS596396B2/en
Expired legal-status Critical Current

Links

Landscapes

  • Protection Of Generators And Motors (AREA)
  • Tests Of Circuit Breakers, Generators, And Electric Motors (AREA)

Abstract

PURPOSE: To activate the alarm unit, by converting the current flowing to the motor winding into DC voltage, adding it with the set voltage, and operating the relay circuit if the resultant voltage changes + or - more than the dead band of the Schmitt circuit, by regarding it as the open or short winding.
CONSTITUTION: The current IM flowing to the winding of the motor A is converted into AC voltage at the current-voltage conversion circuit 1, it is in half wave rectification at the diode D1 and it is converted into the DC voltage +VB at the integration circuit 2. On the other hand, the power supply voltage is in half wave rectification at the diodes D7 and D8 through the power supply circuit 11 to obtain the DC voltage +VDD, -VSS to the neutral point COM. The set voltage -VF is obtained by dividing the voltage -Vss at the current set unit 4. Further the voltage -VE is obtained by dividing the voltage at point D. +VB, -VE, -VF are added at the circuit 3 and they are fed to the Schmitt circuit 9 having a dead band via the amplifier 5. If there is a failure such as open winding in the motor A, the current IM changes and the voltage is varied more than the dead band of the circuit 9, the relay circuit 7 is activated to operate the alarm unit 12.
COPYRIGHT: (C)1980,JPO&Japio
JP53157116A 1978-12-15 1978-12-15 motor failure detector Expired JPS596396B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP53157116A JPS596396B2 (en) 1978-12-15 1978-12-15 motor failure detector

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP53157116A JPS596396B2 (en) 1978-12-15 1978-12-15 motor failure detector

Publications (2)

Publication Number Publication Date
JPS5582063A true JPS5582063A (en) 1980-06-20
JPS596396B2 JPS596396B2 (en) 1984-02-10

Family

ID=15642560

Family Applications (1)

Application Number Title Priority Date Filing Date
JP53157116A Expired JPS596396B2 (en) 1978-12-15 1978-12-15 motor failure detector

Country Status (1)

Country Link
JP (1) JPS596396B2 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4506218A (en) * 1981-01-12 1985-03-19 Rotron Incorporated Condition sensing arrangement for ac machines
JPS62218883A (en) * 1986-03-20 1987-09-26 Hikari Shoko Kk Apparatus for monitoring operation state of electromotor
WO2013018326A1 (en) * 2011-07-29 2013-02-07 ダイキン工業株式会社 Refrigeration device for transportation
CN102937702A (en) * 2012-12-01 2013-02-20 新余钢铁集团有限公司 Auxiliary circuit capable of rapidly searching motor fault

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6460199A (en) * 1987-08-31 1989-03-07 Matsushita Electric Ind Co Ltd Monaural surrounding circuit

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4506218A (en) * 1981-01-12 1985-03-19 Rotron Incorporated Condition sensing arrangement for ac machines
JPS62218883A (en) * 1986-03-20 1987-09-26 Hikari Shoko Kk Apparatus for monitoring operation state of electromotor
WO2013018326A1 (en) * 2011-07-29 2013-02-07 ダイキン工業株式会社 Refrigeration device for transportation
JP2013050294A (en) * 2011-07-29 2013-03-14 Daikin Industries Ltd Refrigeration device for transportation
US9714781B2 (en) 2011-07-29 2017-07-25 Daikin Industries, Ltd. Transport refrigeration apparatus
CN102937702A (en) * 2012-12-01 2013-02-20 新余钢铁集团有限公司 Auxiliary circuit capable of rapidly searching motor fault

Also Published As

Publication number Publication date
JPS596396B2 (en) 1984-02-10

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