JPS5743593A - Monitoring device for operation of hysteresis motor - Google Patents

Monitoring device for operation of hysteresis motor

Info

Publication number
JPS5743593A
JPS5743593A JP55118730A JP11873080A JPS5743593A JP S5743593 A JPS5743593 A JP S5743593A JP 55118730 A JP55118730 A JP 55118730A JP 11873080 A JP11873080 A JP 11873080A JP S5743593 A JPS5743593 A JP S5743593A
Authority
JP
Japan
Prior art keywords
motors
detected
impedances
bar
points
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
JP55118730A
Other languages
Japanese (ja)
Inventor
Kosaku Ichikawa
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 JP55118730A priority Critical patent/JPS5743593A/en
Publication of JPS5743593A publication Critical patent/JPS5743593A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H1/00—Details of emergency protective circuit arrangements
    • H02H1/0061—Details of emergency protective circuit arrangements concerning transmission of signals

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Control Of Multiple Motors (AREA)

Abstract

PURPOSE:To determine whether a electric motors are normal or abnormal by detecting volume of electricity on both ends of impedances, by connecting one ends of a current detecting circuits, which are provided between switches and motors, in a common manner, and also by connecting the other ends through the impedances. CONSTITUTION:Hysteresis motors 1 (M1-Mn) being connected to a power source and switch (not described in the sketch) are provided with current transformers CT1-CTn, and one ends thereof are connected to a common bus-bar A, and the other ends are all connected to a bus-bar B through inpedances Z1-Zn. All the detected signals are taken out from the other ends (a, b...n points) of the impedances using a common bus-bar B as a COM line and given to a discrimination circuit 12. In case when all the motors are operating normally, potentials at detected points a, b...n are all equal to one another, but if an abnormality should occur, the potential at the detected point corresponding to the abnormal motor becomes different, and thid potential variation is detected by the discrimination circuit 12.
JP55118730A 1980-08-28 1980-08-28 Monitoring device for operation of hysteresis motor Pending JPS5743593A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55118730A JPS5743593A (en) 1980-08-28 1980-08-28 Monitoring device for operation of hysteresis motor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55118730A JPS5743593A (en) 1980-08-28 1980-08-28 Monitoring device for operation of hysteresis motor

Publications (1)

Publication Number Publication Date
JPS5743593A true JPS5743593A (en) 1982-03-11

Family

ID=14743648

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55118730A Pending JPS5743593A (en) 1980-08-28 1980-08-28 Monitoring device for operation of hysteresis motor

Country Status (1)

Country Link
JP (1) JPS5743593A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4639645A (en) * 1984-08-01 1987-01-27 Institut Cerac S. A. Drive system for A.C. motors

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4639645A (en) * 1984-08-01 1987-01-27 Institut Cerac S. A. Drive system for A.C. motors

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