JPS56153959A - Induction machine - Google Patents

Induction machine

Info

Publication number
JPS56153959A
JPS56153959A JP5543180A JP5543180A JPS56153959A JP S56153959 A JPS56153959 A JP S56153959A JP 5543180 A JP5543180 A JP 5543180A JP 5543180 A JP5543180 A JP 5543180A JP S56153959 A JPS56153959 A JP S56153959A
Authority
JP
Japan
Prior art keywords
machine
secondary side
frequency detector
detector
output
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
JP5543180A
Other languages
Japanese (ja)
Inventor
Yoshihiko Okuyama
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.)
Fuji Electric Co Ltd
Original Assignee
Fuji 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 Fuji Electric Co Ltd filed Critical Fuji Electric Co Ltd
Priority to JP5543180A priority Critical patent/JPS56153959A/en
Publication of JPS56153959A publication Critical patent/JPS56153959A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/34—Testing dynamo-electric machines
    • G01R31/343—Testing dynamo-electric machines in operation

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Induction Machinery (AREA)

Abstract

PURPOSE:To detect the unbalance of a secondary side circuit in an induction machine by the fact that the output of a pulsating frequency detector connected to the primary side of the machine coincides with that of a beat frequency detector connected to the secondary side of the machine. CONSTITUTION:A pulsating frequency detector 12 is connected to the primary side of an induction machine 10. A tachometer generator 20 is, on the other hand, connected to the rotating shaft 18 of a rotor at the secondary side of the machine 10, and a beat frequency detector 22 is connected to the output side of the generator 20. A comparator 24 produces a signal to a warning device 26 when the output of the detector 12 coincides with that of the detector 22, thereby notifying that the secondary side of the machine 10 is in unbalanced state.
JP5543180A 1980-04-28 1980-04-28 Induction machine Pending JPS56153959A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5543180A JPS56153959A (en) 1980-04-28 1980-04-28 Induction machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5543180A JPS56153959A (en) 1980-04-28 1980-04-28 Induction machine

Publications (1)

Publication Number Publication Date
JPS56153959A true JPS56153959A (en) 1981-11-28

Family

ID=12998389

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5543180A Pending JPS56153959A (en) 1980-04-28 1980-04-28 Induction machine

Country Status (1)

Country Link
JP (1) JPS56153959A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61112976A (en) * 1984-11-07 1986-05-30 Fuji Electric Co Ltd Diagnostic apparatus of induction motor
JPS61167884A (en) * 1985-01-18 1986-07-29 Fuji Electric Co Ltd Diagnostic device for fracture of rotor conductor of induction motor
JPS6232378A (en) * 1985-08-06 1987-02-12 Fuji Electric Co Ltd Diagnosing device for induction motor

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61112976A (en) * 1984-11-07 1986-05-30 Fuji Electric Co Ltd Diagnostic apparatus of induction motor
JPS61167884A (en) * 1985-01-18 1986-07-29 Fuji Electric Co Ltd Diagnostic device for fracture of rotor conductor of induction motor
JPS6232378A (en) * 1985-08-06 1987-02-12 Fuji Electric Co Ltd Diagnosing device for induction motor

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