JPS56132550A - Diagnostic method for deterioration of insulation for winding of electric machine - Google Patents

Diagnostic method for deterioration of insulation for winding of electric machine

Info

Publication number
JPS56132550A
JPS56132550A JP3597680A JP3597680A JPS56132550A JP S56132550 A JPS56132550 A JP S56132550A JP 3597680 A JP3597680 A JP 3597680A JP 3597680 A JP3597680 A JP 3597680A JP S56132550 A JPS56132550 A JP S56132550A
Authority
JP
Japan
Prior art keywords
windings
deterioration
insulation
degree
kraft paper
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
JP3597680A
Other languages
Japanese (ja)
Other versions
JPH0136060B2 (en
Inventor
Masanori Takada
Naoteru Yonemori
Sukuo Chiba
Hironobu Motojima
Masamitsu Okumura
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.)
Nippon Steel Corp
Original Assignee
Nippon Steel Corp
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 Nippon Steel Corp filed Critical Nippon Steel Corp
Priority to JP3597680A priority Critical patent/JPS56132550A/en
Publication of JPS56132550A publication Critical patent/JPS56132550A/en
Publication of JPH0136060B2 publication Critical patent/JPH0136060B2/ja
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N23/00—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00
    • G01N23/02—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by transmitting the radiation through the material

Landscapes

  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Analysing Materials By The Use Of Radiation (AREA)
  • Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)

Abstract

PURPOSE:To diagnose the degree of deterioration of the insulation more accurately by transmitting an X-ray through the insulating organization of the windings of the electric machine, photographing the inside thereof, and judging the degree of the insulation deterioration by the transmissive amount. CONSTITUTION:The windings 3 and 4 are enclosed at the upper and lower parts in a slot 2 which is provided in a stator core 1. The windings 3 and 4 are rigidly fixed by a wedge 5 so that the windings are not moved by mechanical and electrical vibrations. The windings are constructed by overlapping a mica 7, a kraft paper 8, and a mica 9 sequentially on the outside of a copper wire 6. The abrasion of the insulator is caused between the kraft paper 8 and the micas 7 and 9 on both sides. Then, a film 10 is placed under the winding 3 as shown in the Figure, the soft X-ray is transmitted, the photograph is taken, and a waveform is obtained. If the contacting part between the kraft paper and the micas is abraded by the secular change, a gap is formed, and the transmissive amount of the X-ray becomes large. Therefore the degree of the deterioration can be detected by the transmissive amount.
JP3597680A 1980-03-21 1980-03-21 Diagnostic method for deterioration of insulation for winding of electric machine Granted JPS56132550A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3597680A JPS56132550A (en) 1980-03-21 1980-03-21 Diagnostic method for deterioration of insulation for winding of electric machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3597680A JPS56132550A (en) 1980-03-21 1980-03-21 Diagnostic method for deterioration of insulation for winding of electric machine

Publications (2)

Publication Number Publication Date
JPS56132550A true JPS56132550A (en) 1981-10-16
JPH0136060B2 JPH0136060B2 (en) 1989-07-28

Family

ID=12456929

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3597680A Granted JPS56132550A (en) 1980-03-21 1980-03-21 Diagnostic method for deterioration of insulation for winding of electric machine

Country Status (1)

Country Link
JP (1) JPS56132550A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019182640A1 (en) * 2018-03-19 2019-09-26 Siemens Energy, Inc. Method of assessing the risk of a stator failure

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5020787A (en) * 1973-06-22 1975-03-05
JPS52128190A (en) * 1976-04-21 1977-10-27 Nec Corp Inspection device for x ray fluoroscopic adhering layer

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5020787A (en) * 1973-06-22 1975-03-05
JPS52128190A (en) * 1976-04-21 1977-10-27 Nec Corp Inspection device for x ray fluoroscopic adhering layer

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019182640A1 (en) * 2018-03-19 2019-09-26 Siemens Energy, Inc. Method of assessing the risk of a stator failure
US10656208B2 (en) 2018-03-19 2020-05-19 Siemens Energy, Inc. Method of assessing the risk of a stator failure

Also Published As

Publication number Publication date
JPH0136060B2 (en) 1989-07-28

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