JPS56136157A - Diagnosis for interlayer insulation of armature coil for rotary electrical machine - Google Patents

Diagnosis for interlayer insulation of armature coil for rotary electrical machine

Info

Publication number
JPS56136157A
JPS56136157A JP3753980A JP3753980A JPS56136157A JP S56136157 A JPS56136157 A JP S56136157A JP 3753980 A JP3753980 A JP 3753980A JP 3753980 A JP3753980 A JP 3753980A JP S56136157 A JPS56136157 A JP S56136157A
Authority
JP
Japan
Prior art keywords
armature coil
deterioration
capacitance
degree
diagnosis
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
JP3753980A
Other languages
Japanese (ja)
Other versions
JPS6323745B2 (en
Inventor
Takeshi Yamagiwa
Kenji Matsunobu
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 JP3753980A priority Critical patent/JPS56136157A/en
Publication of JPS56136157A publication Critical patent/JPS56136157A/en
Publication of JPS6323745B2 publication Critical patent/JPS6323745B2/ja
Granted 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
    • G01R31/346—Testing of armature or field windings

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Testing Relating To Insulation (AREA)

Abstract

PURPOSE:To nondestructively and safely detect the degree of the deterioration in interlayer insulator by applying a high-frequency voltage becoming a resonant state by the inductance and capacitance of an armature coil across the layers of the armature coil wherein a change in characteristics is detected. CONSTITUTION:A high-frequency voltage is applied across the layers of an armature coil 1 by utilizing commutator pieces 2. And especially, the frequency characteristic of impedance Z is measured at the frequency band resion becoming a resonant state by the inductance and capacitance of the armature coil 1. As the capacitance is changed with the deterioration in the layer insulator of the armature coil 1, the characteristic curve will vary as the progress of the deterioration from the solid line to the dotted line in the Fig. Therefore, the degree of the deterioration in the interlayer insulator is judged from the degree of a change in said characteristics. In this way, a deterioration in insulation will safely and nondestructively be detected with decreased test voltage.
JP3753980A 1980-03-26 1980-03-26 Diagnosis for interlayer insulation of armature coil for rotary electrical machine Granted JPS56136157A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3753980A JPS56136157A (en) 1980-03-26 1980-03-26 Diagnosis for interlayer insulation of armature coil for rotary electrical machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3753980A JPS56136157A (en) 1980-03-26 1980-03-26 Diagnosis for interlayer insulation of armature coil for rotary electrical machine

Publications (2)

Publication Number Publication Date
JPS56136157A true JPS56136157A (en) 1981-10-24
JPS6323745B2 JPS6323745B2 (en) 1988-05-18

Family

ID=12500324

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3753980A Granted JPS56136157A (en) 1980-03-26 1980-03-26 Diagnosis for interlayer insulation of armature coil for rotary electrical machine

Country Status (1)

Country Link
JP (1) JPS56136157A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008061462A (en) * 2006-09-01 2008-03-13 Nagoya Institute Of Technology Short circuit diagnostic system of stator winding for motor
KR101136493B1 (en) * 2011-04-18 2012-04-19 부산대학교 산학협력단 Method for stator shorted turn fault detection using opposed pair-phase voltage/current of electric motor

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008061462A (en) * 2006-09-01 2008-03-13 Nagoya Institute Of Technology Short circuit diagnostic system of stator winding for motor
KR101136493B1 (en) * 2011-04-18 2012-04-19 부산대학교 산학협력단 Method for stator shorted turn fault detection using opposed pair-phase voltage/current of electric motor

Also Published As

Publication number Publication date
JPS6323745B2 (en) 1988-05-18

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