JPS5791419A - Method and device for checking squirrel-cage rotor - Google Patents

Method and device for checking squirrel-cage rotor

Info

Publication number
JPS5791419A
JPS5791419A JP16669080A JP16669080A JPS5791419A JP S5791419 A JPS5791419 A JP S5791419A JP 16669080 A JP16669080 A JP 16669080A JP 16669080 A JP16669080 A JP 16669080A JP S5791419 A JPS5791419 A JP S5791419A
Authority
JP
Japan
Prior art keywords
conductor rod
attachment
iron core
plate
oscillation
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
JP16669080A
Other languages
Japanese (ja)
Inventor
Osamu Miwa
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 JP16669080A priority Critical patent/JPS5791419A/en
Publication of JPS5791419A publication Critical patent/JPS5791419A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01H—MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES
    • G01H7/00—Measuring reverberation time ; room acoustic measurements

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
  • Tests Of Circuit Breakers, Generators, And Electric Motors (AREA)

Abstract

PURPOSE:To check retaining force between the iron core of a rotor and a conductor rod easily and quantitatively, by detecting the attenuation characteristics of a resonance wave by applying oscillation in the external diameter direction of the conductor rod. CONSTITUTION:When an operator presses an attachment 5 against the conductor rod 11 of a rotor iron core 12 by holding a plate 4, the conductor rod 11 resonates at the frequency of oscillation applied through an oscillator 1, a piezoelectric element 2, the plate 4, and the attachment 5. The resonance is detected by the piezoleletric element 2 through the attachment 5 and plate 4, and its output voltage is supplied to a voltage measuring instrument 3. A trigger 6 while operating the oscillator 1 permits a timer 7 to start time measurement. The required time when the resonance wave output of an amplifier 3 decreases below the set value of an arithmetic part 8 is displayed on a display part 9 and an oscillation waveform is displayed on a monitor 10. consequently, retaining force between the rotor iron core 12 and conductor rod 11 is checked easily and quantitatively.
JP16669080A 1980-11-28 1980-11-28 Method and device for checking squirrel-cage rotor Pending JPS5791419A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16669080A JPS5791419A (en) 1980-11-28 1980-11-28 Method and device for checking squirrel-cage rotor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16669080A JPS5791419A (en) 1980-11-28 1980-11-28 Method and device for checking squirrel-cage rotor

Publications (1)

Publication Number Publication Date
JPS5791419A true JPS5791419A (en) 1982-06-07

Family

ID=15835925

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16669080A Pending JPS5791419A (en) 1980-11-28 1980-11-28 Method and device for checking squirrel-cage rotor

Country Status (1)

Country Link
JP (1) JPS5791419A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010133961A (en) * 2008-12-05 2010-06-17 General Electric Co <Ge> Winding diagnostic system and method

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5510884A (en) * 1978-07-11 1980-01-25 Nippon Steel Corp Method of detecting looseness of winding for electric apparatus

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5510884A (en) * 1978-07-11 1980-01-25 Nippon Steel Corp Method of detecting looseness of winding for electric apparatus

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010133961A (en) * 2008-12-05 2010-06-17 General Electric Co <Ge> Winding diagnostic system and method

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