JPS58174845A - Method of diagnosing insulation of insulated coil - Google Patents

Method of diagnosing insulation of insulated coil

Info

Publication number
JPS58174845A
JPS58174845A JP57059191A JP5919182A JPS58174845A JP S58174845 A JPS58174845 A JP S58174845A JP 57059191 A JP57059191 A JP 57059191A JP 5919182 A JP5919182 A JP 5919182A JP S58174845 A JPS58174845 A JP S58174845A
Authority
JP
Japan
Prior art keywords
acceleration
insulated coil
signal
natural frequency
insulation
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
JP57059191A
Other languages
Japanese (ja)
Other versions
JPH0126500B2 (en
Inventor
Tokio Fukunaga
福永　時雄
Akimi Futagawa
二川　暁美
Mataichiro Kiso
木曾　又一郎
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric 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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP57059191A priority Critical patent/JPS58174845A/en
Priority to US06/477,366 priority patent/US4502329A/en
Priority to DE8383102999T priority patent/DE3368772D1/en
Priority to EP83102999A priority patent/EP0091037B1/en
Publication of JPS58174845A publication Critical patent/JPS58174845A/en
Publication of JPH0126500B2 publication Critical patent/JPH0126500B2/ja
Granted legal-status Critical Current

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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
    • G01R31/12—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing
    • G01R31/1227—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing of components, parts or materials
    • G01R31/1263—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing of components, parts or materials of solid or fluid materials, e.g. insulation films, bulk material; of semiconductors or LV electronic components or parts; of cable, line or wire insulation
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
    • G01N29/04—Analysing solids
    • G01N29/045—Analysing solids by imparting shocks to the workpiece and detecting the vibrations or the acoustic waves caused by the shocks
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
    • G01N29/04—Analysing solids
    • G01N29/12—Analysing solids by measuring frequency or resonance of acoustic waves
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
    • G01N3/32—Investigating strength properties of solid materials by application of mechanical stress by applying repeated or pulsating forces
    • 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
    • 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
    • G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
    • G01R31/72—Testing of electric windings
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2291/00—Indexing codes associated with group G01N29/00
    • G01N2291/02—Indexing codes associated with the analysed material
    • G01N2291/025—Change of phase or condition
    • G01N2291/0258—Structural degradation, e.g. fatigue of composites, ageing of oils
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2291/00—Indexing codes associated with group G01N29/00
    • G01N2291/02—Indexing codes associated with the analysed material
    • G01N2291/028—Material parameters
    • G01N2291/02827—Elastic parameters, strength or force
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2291/00—Indexing codes associated with group G01N29/00
    • G01N2291/26—Scanned objects
    • G01N2291/269—Various geometry objects
    • G01N2291/2697—Wafer or (micro)electronic parts

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Power Engineering (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)

Abstract

PURPOSE:To allow the deterioration of insulation to be diagnosed quantitatively without applying high voltage and causing damage by a method wherein mechanical external oscillating force is applied to an insulated coil and the changing charcteristics of the discrete oscillating number against acceleration are obtained. CONSTITUTION:By amplifying an oscillating signal from a function generator 4 to a preselected value with a signal amplifier 5, an insulated coil 1 is oscillated by an oscillator 2. The acceleration of the insulated coil 1 is detected by a pickup 3, amplified by an accelerometer 6 and corrected before being sent to a recording indicator 7. The input signal from the function generator 4 has also been applied to the recording indicator 7. The oscillating frequency of the generator 4 is continuously changed, whereas resonance is obtained when the signal from the accelerometer 3 is maximized. The signal sent from the accelerometer 3 is maximized. The signal sent from the generator 4 indicates the discrete oscillating number. Subsequently, by changing the degree of amplification in the signal amplifier 5, the same date can be obtained. This operation is carried out in several stages to make clear the characteristics of acceleration-discrete oscillating number, so that the deterioration of insulation can be diagnosed.

Description

【発明の詳細な説明】 −この発明は、電気機器の絶縁コイルを加振し固有振動
数を測定し、絶縁劣化を判定する、絶縁コイルの絶縁診
断方法に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an insulation diagnosis method for an insulated coil of an electrical device, which vibrates the insulated coil, measures its natural frequency, and determines insulation deterioration.

従来、電気ｆｌｋ器、例えば回転電機の絶縁コイルの非
破壊的な絶縁診断方法には、ノ１ンマリングによる打音
検査や、ｔａｎσ特性の計測などが用いられている。し
かし、打音検査では、検査員の勘にたよる点が多く定量
的評価ができない０また、ｔａｎσ特性の計測では、一
時的に高電圧を印加しなければならないことや、不良部
の位置標定か困難であるなどの難点があった。BACKGROUND ART Conventionally, non-destructive insulation diagnosis methods for insulated coils of electric flux devices, for example, rotating electric machines, have used hammering tests using normalization, measurements of tanσ characteristics, and the like. However, in hammering inspection, quantitative evaluation is not possible as it relies on the inspector's intuition.In addition, in measuring tanσ characteristics, it is necessary to temporarily apply high voltage and it is difficult to locate the defective part. There were some drawbacks, such as the fact that it was difficult to

この発明は、上記のような従来の方法の欠点を除去する
ためになされたものであり、絶縁コイルに機械的加振外
力を与え、加速度に対する固有振動数の変化の特性を得
て絶縁の劣化を判定するようにし、絶縁コイルに高電圧
の印加や損傷を与えることなく、定量的に絶縁の劣化が
診断でき、不良箇所が判明される絶縁コイルの絶縁診断
方法を提供することを目的としている。This invention was made in order to eliminate the drawbacks of the conventional method as described above, and it applies mechanical excitation external force to an insulated coil, obtains characteristics of change in natural frequency with respect to acceleration, and prevents deterioration of insulation. The purpose of this invention is to provide an insulation diagnosis method for insulated coils that can quantitatively diagnose insulation deterioration and identify defective locations without applying high voltage or damaging the insulated coil. .

以下、この発明の一実施例を、図により説明するＯ 第１図は絶縁コイルに機械的外力を与えた場合の、変形
特性を示す３機械的外力は、引張荷重でも曲げ荷重でも
よい、絶縁が良好な場合は、第１図（Ａ）の特性線Ｅに
示すように、直線的な変形特性を示す。ところが、経年
変化などによって絶縁が劣化した場合は、第１図（Ｂ）
の特性線Ｆに示すような非線形特性を示す。An embodiment of the present invention will be explained below with reference to the drawings. When the deformation characteristics are good, linear deformation characteristics are exhibited as shown by characteristic line E in FIG. 1(A). However, if the insulation deteriorates due to changes over time, etc., as shown in Figure 1 (B)
It exhibits nonlinear characteristics as shown by characteristic line F.

したがって、絶縁コイルの絶縁が良好な場合は、第２図
（Ａ）の特性線Ｇに示すように、絶縁コイルが振動する
ときの固有撮動数は、振動加速度の大きさに依存せず、
一定の値ｆｌｌ・の値となる。しかし、絶縁が劣化した
場合には、第２図（Ｂ）の特性線Ｈに示すように、固有
振動数はｆ。・よりも低く、かつ、加速ｋが大きくなる
ほど下がる傾向を示す。Therefore, when the insulation of the insulated coil is good, as shown by the characteristic line G in FIG.
The value is a constant value fll. However, when the insulation deteriorates, the natural frequency becomes f, as shown by characteristic line H in FIG. 2(B).・It is lower than , and tends to decrease as the acceleration k increases.

以上の観点から、第２図に示すように、絶縁コイルの加
速度−固有振動特性を検知することによって、絶縁の劣
化診断が可能となる。これが、この発明による絶縁診断
方法の原理である。すなわち、絶縁コイルに診断の機械
的外力を与え、そのときの加速度と固有振動数を測定し
、加速度の変化に対する固有振動数の変化を検知し、絶
縁物の良否を判定することができるようにしている。From the above viewpoint, as shown in FIG. 2, by detecting the acceleration-natural vibration characteristics of the insulated coil, it becomes possible to diagnose the deterioration of the insulation. This is the principle of the insulation diagnosis method according to the present invention. In other words, it is possible to apply a diagnostic mechanical external force to the insulated coil, measure the acceleration and natural frequency at that time, detect changes in the natural frequency in response to changes in acceleration, and judge whether the insulation is good or bad. ing.

第３図はこの発明の一実施例による絶縁診断方法を示す
構成図である。（１）は回転電機などの絶縁コイルで、
周波数が連続に変えられる加振器（２）が当てられ外力
が与えられている。（３）は絶縁コイル（１）に加振器
（２）とは反対側に取付けられた加速度ビックである。FIG. 3 is a block diagram showing an insulation diagnosis method according to an embodiment of the present invention. (1) is an insulated coil for rotating electric machines, etc.
A vibrator (2) whose frequency can be changed continuously is applied to apply an external force. (3) is an acceleration vibrator attached to the insulated coil (1) on the opposite side of the vibrator (2).

ファンクションゼネレータ（４）から出された加振信号
を信号増幅器（５）で一定値に増幅し、加振器（２）に
より絶縁コイル（１）を加振する。絶縁コイル（１）の
加速度はピックアップ（３）で検出し、加速度計（６）
で増幅と較正を行なった後、加速信号を記録表示計（７
）に送る。記録表示計（７）には、ファンクションゼネ
レータα１の信号も送られている。The excitation signal output from the function generator (4) is amplified to a constant value by the signal amplifier (5), and the insulated coil (1) is vibrated by the vibrator (2). The acceleration of the insulated coil (1) is detected by the pickup (3), and the acceleration of the insulated coil (1) is detected by the accelerometer (6).
After amplification and calibration, the acceleration signal is recorded on the display meter (7
). A signal from the function generator α1 is also sent to the recorder (7).

ファンクションゼネレータ（４）の加振周波数を連続的
に変えてゆき、加速度計（３）から送られる加速度信号
が最大になるときが共振点であり、そのときにファンク
ションゼネレータ（４）から送られる信号が固有振動数
を示す。これにより、加速度に対する固有振動数のデー
タが一つわかったことになる。次に信号増幅器（５）の
増幅度を変え、同様のデータを得る。これを数段階につ
いて行なうことにより、第２図に示すような加速度−固
有振動数の特性が明らかにされ、絶縁の劣化診断ができ
る。The resonance point is when the excitation frequency of the function generator (4) is continuously changed and the acceleration signal sent from the accelerometer (3) reaches its maximum, and the signal sent from the function generator (4) at that time is the resonance point. indicates the natural frequency. As a result, one piece of data on the natural frequency with respect to acceleration has been found. Next, the amplification degree of the signal amplifier (5) is changed to obtain similar data. By performing this in several stages, the acceleration-natural frequency characteristics as shown in FIG. 2 are clarified, and the deterioration of the insulation can be diagnosed.

また、絶縁コイルをハンマで打撃し、パルス的な外力で
加振するようにした、この発明の他の実施例による絶縁
診断方法を、第４図の構成図により説明する。ハンマ（
８）により絶縁コイル（１）を打撃すると、絶縁コイル
（１）にハンマ（８）側とは反対側に取付けられである
加速度ピックアップ（３）で加速度信号が検出されるコ
この加速度信号を加速度計（６）で増幅し、周波数分析
器（９）に入れる。周波数分析器（９）では、周波数ご
との信号レベルを分析することにより、固有振動数が求
められ、この信号を記録表示針（７）に送る。記録表示
計（７）には加速度計（６）からの信号も送られており
、加速度に対する固有振動数のデータが一つ求まる。次
にハンマ（８）の打撃力を変えることによって、累々る
加速度に対する固有振動数のデータが求まる。この手順
を数回繰返すことにより、第２図に示すような加速度−
固有振動数の特性が得られ、絶縁の劣化状態を診断でき
る。Further, an insulation diagnosis method according to another embodiment of the present invention, in which the insulated coil is struck with a hammer and vibrated with a pulsed external force, will be explained with reference to the configuration diagram of FIG. 4. Hammer (
When the insulated coil (1) is struck by the insulated coil (1), the acceleration signal is detected by the acceleration pickup (3) attached to the insulated coil (1) on the side opposite to the hammer (8) side. The signal is amplified by the analyzer (6) and fed into the frequency analyzer (9). The frequency analyzer (9) determines the natural frequency by analyzing the signal level for each frequency, and sends this signal to the record display needle (7). A signal from the accelerometer (6) is also sent to the recording/display meter (7), and one piece of natural frequency data for acceleration can be obtained. Next, by changing the striking force of the hammer (8), data on the natural frequency with respect to the accumulating acceleration can be obtained. By repeating this procedure several times, the acceleration -
Characteristics of natural frequencies can be obtained and the state of insulation deterioration can be diagnosed.

上記実施例では、検査者が加速度−固有振動数特性の表
示内容を目視することにより、絶縁劣化判定を行なった
が、診断装置に演算と判定機能をもたせれば、さらに、
客観的な判定ができる。このようにした、この発明の他
の異なる実施例を、第５図に構成図で示す。加速度ピッ
クアップ（３）で検出した加速度信号を、加速度計（６
）に入れて増幅し、記録計０１と固有振動数測定器０１
）とに送る。固有振動数の測定に加振力の信号が必要な
場合は、加振器（２Ａ）７５４らの信号も固有振動数測
定器ａυに入れる。固有振動数測定器０１）と加速度計
（６）からの信号を記録器０１で受け、加速度に対する
固有撮動数をデータとして演算器０のに送る。演算器θ
のはこの入力データを次々に記憶するとともに、第２図
に示す特性から、測定した固有振動数の値、あるいは、
加速度の変化に対する固有振動数の変化を求めることに
より、あらかじめ記憶しである良品のデータと比較し、
測定の対象としている絶縁の劣化を判定し、表示器αｊ
で表示する。機械的加振外力には、加振器（２人）でも
、ノ・ンマ（８）によってもよいＯ なお、この発明による絶縁診断方法は、絶縁コイルを、
第２図に示す特性変化を測定することにより、絶縁物の
劣化を診断することを原理としており、測定のための構
成は、−ｈ記各実施例に限らず、種々の構成によること
ができるものである。In the above embodiment, the inspector visually checked the displayed contents of the acceleration-natural frequency characteristics to determine insulation deterioration, but if the diagnostic device is equipped with calculation and determination functions,
Able to make objective judgments. Another different embodiment of the invention is shown in FIG. 5 as a block diagram. The acceleration signal detected by the acceleration pickup (3) is transferred to the accelerometer (6).
) and amplify it, recorder 01 and natural frequency measuring device 01.
) and send it to. If an excitation force signal is required to measure the natural frequency, the signals from the vibrator (2A) 754 are also input to the natural frequency measuring device aυ. Signals from the natural frequency measuring device 01) and the accelerometer (6) are received by the recorder 01, and the natural frequency for acceleration is sent to the computing unit 0 as data. Arithmetic unit θ
stores this input data one after another, and from the characteristics shown in Figure 2, calculates the value of the measured natural frequency or
By determining the change in the natural frequency with respect to the change in acceleration, we compare it with the data of a good product that has been memorized in advance.
Determine the deterioration of the insulation that is being measured, and display the indicator αj.
Display in . The mechanical excitation external force may be a vibrator (2 people) or a noma (8).
The principle is to diagnose the deterioration of an insulator by measuring the change in characteristics shown in FIG. It is something.

また、この発明は、回転電機の絶縁コイルに限らず、静
止器々どの絶縁コイルにも適用できるものである。Furthermore, the present invention is applicable not only to insulated coils of rotating electric machines but also to any insulated coils of stationary equipment.

以上のように、この発明によれば、絶縁コイルに機械的
加振外力を与え、加速度と固有振動数を測定し、加速度
の変化に対する、固有振動数の変化あるいは固有振動数
の値を検知し、絶縁物の劣化を判定するようにしたので
、絶縁コイルに高電圧の印加や損傷を与えることなく、
測定対象とする位置で、定量的に絶縁の劣化を診断する
ことができる。As described above, according to the present invention, a mechanical excitation external force is applied to an insulated coil, acceleration and natural frequency are measured, and changes in the natural frequency or the value of the natural frequency in response to changes in acceleration are detected. , the deterioration of the insulator is determined, so the insulated coil is not damaged or damaged by high voltage.
Deterioration of insulation can be quantitatively diagnosed at the location targeted for measurement.

【図面の簡単な説明】[Brief explanation of the drawing]

第１図は絶縁コイルに機械的外力を与えたときの変形特
性曲線図で、（Ａ）は良品の場合を、（Ｂ）は劣化品の
場合を示す。第２図は絶縁コイルの加速度−固有振動数
特性曲線図で、（Ａ）は良品の場合を、（Ｂ）は劣化品
の場合を示す、第３図はこの発明の一実施例による絶縁
コイルの絶縁診断方法を示す加振器による外力を与える
場合の構成図、第４図はこの発明の他の実施例による絶
縁診断方法を示すハンマによる外力を与える場合の構成
図、第５図はこの発明の他の異なる実施例による絶縁診
断方法を示す構成図である。 １　・絶縁コイル、２，２Ａ・・・加振器、３・・・加
速度ピックアップ、４・・・ファンクショナルゼネレー
タ、６・・・加速度計、７・・・記録表示計、８・・・
ハンマ、９・・・周波数分析器、１０・・記録器、１１
・・・固有振動数測定器、１２・・・演算器、１３・・
・判定表示器なお、図中同一符号は同−又は相当部分を
示すっ代理人　葛　野　信　−（外１名）FIG. 1 is a deformation characteristic curve diagram when an external mechanical force is applied to the insulated coil, where (A) shows the case of a good product and (B) shows the case of a deteriorated product. Fig. 2 is an acceleration-natural frequency characteristic curve diagram of an insulated coil, in which (A) shows a case of a good product and (B) shows a case of a deteriorated product. Fig. 3 shows an insulated coil according to an embodiment of the present invention. Fig. 4 is a block diagram showing an insulation diagnosis method according to another embodiment of the present invention in which an external force is applied using a vibrator; FIG. 7 is a configuration diagram showing an insulation diagnosis method according to another different embodiment of the invention. 1 - Insulated coil, 2,2A... Exciter, 3... Acceleration pickup, 4... Functional generator, 6... Accelerometer, 7... Recording display meter, 8...
Hammer, 9... Frequency analyzer, 10... Recorder, 11
...Natural frequency measuring device, 12...Arithmetic unit, 13...
・Judgment indicator Note that the same reference numerals in the diagram indicate the same or equivalent parts. Agent Shin Kuzuno (1 other person)

Claims (6)

【特許請求の範囲】[Claims] （１）絶縁コイルに診断のため加振する機械的外力を与
え、このときの絶縁コイルの加速度と固有振動数とを測
定し、加速度の変化に対し固有振動数の変化を求め、あ
るいは加速度に対する固有振動数の値を検知することＫ
より、絶縁物の劣化を判定する絶縁コイルの絶縁診断方
法。(1) Apply a mechanical external force to the insulated coil for diagnosis, measure the acceleration and natural frequency of the insulated coil at this time, find the change in the natural frequency with respect to the change in acceleration, or Detecting the value of natural frequency K
An insulation diagnosis method for an insulated coil for determining deterioration of an insulator. （２）機械的外力として、加振周波数を連続的に変えて
与えられる加振器によることを特徴とする特許請求の範
囲第１項記載の絶縁コイルの絶縁診断方法り(2) The method for diagnosing insulation of an insulated coil according to claim 1, characterized in that the mechanical external force is applied by a vibrator that continuously changes the excitation frequency. （３）　　機械的外力として、ノーンマで打撃しパルス
的な外力を与えることを特徴とする特許請求の範囲第１
項記載の絶縁コイルの絶縁診断方法。(3) Claim 1, which is characterized in that the external mechanical force is applied by hitting with a flat hammer to apply a pulse-like external force.
Insulation diagnosis method for insulated coils described in Section 1. （４）ファンクショナルゼネレータからの加振信号を加
振器に加え、この加振器による絶縁コイルの加速度を加
速度ピックアップで検出し、この加速度信号を加速度計
で増幅し記録表示計に入れ、上記ファンクショナルゼネ
レ〜りの信号を上記記録表示計に送り、ファンクショナ
ルゼネレータの加振周波数を連続的に変えていき、上記
記録表示計により加速度−固有振動数の特性を得るよう
にする特許請求の範囲第２項記載の絶縁コイルの絶縁診
断方法。(4) Add the excitation signal from the functional generator to the exciter, detect the acceleration of the insulated coil caused by this exciter with an acceleration pickup, amplify this acceleration signal with the accelerometer, input it to the recorder, and A patent claim in which a functional generator signal is sent to the recording display meter, the excitation frequency of the functional generator is continuously changed, and the acceleration-natural frequency characteristic is obtained by the recording display meter. The method for diagnosing insulation of an insulated coil according to item 2. （５）　　ハンマの打撃による絶縁コイルの加速度を加
速度ピックアップで検出し、この加速度信号を加速度計
に入れて増幅し、記録表示計に入れるとともに、上記加
速度計からの信号を周波数分析器に入れ固有振動数を求
めて上記記録表示計に送り、上記ハンマの打撃力を変え
てｂつて加速度−固有振動数の特性を得るようにする特
許請求の範囲第３項記載の絶縁コイルの絶縁診断方法。(5) Detect the acceleration of the insulated coil due to the impact of the hammer with an acceleration pickup, put this acceleration signal into an accelerometer, amplify it, send it to a record display meter, and put the signal from the above-mentioned accelerometer into a frequency analyzer to obtain a unique signal. 4. The method for diagnosing insulation of an insulated coil according to claim 3, wherein the vibration frequency is determined and sent to the recording/display meter, and the striking force of the hammer is changed to obtain the acceleration-natural frequency characteristic. （６）　　機械的加振外力が与えられた絶縁コイルの加
速度を加速度ピックアップで検出し、この加速度信号を
加速度計で増幅し、この増幅信号を記録器に入れるとと
もに、固有振動数測定器に入れ固有振動数を求めて上記
記録器に入れ、この記録器による加速度−固有振動数の
データを演算器に送り、この演算器で入力データを逐次
記憶するとともに、あらかじめ記憶されである良品デー
タと比較し絶縁の劣化を判定し、判定表示器で表示する
特許請求の範囲第１項ないし第３項のいづれかの項記載
の絶縁コイルの絶縁診断方法０(6) Detect the acceleration of the insulated coil to which external mechanical excitation force has been applied, use an acceleration pickup to amplify this acceleration signal using an accelerometer, input this amplified signal into a recorder, and input it into a natural frequency measuring device. The natural frequency is determined and stored in the recorder, and the acceleration-natural frequency data from this recorder is sent to a calculator, which sequentially stores the input data and compares it with pre-stored good product data. Insulation diagnosis method 0 for an insulated coil according to any one of claims 1 to 3, which determines the deterioration of the insulation and displays it on a determination display.
JP57059191A 1982-04-07 1982-04-07 Method of diagnosing insulation of insulated coil Granted JPS58174845A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP57059191A JPS58174845A (en) 1982-04-07 1982-04-07 Method of diagnosing insulation of insulated coil
US06/477,366 US4502329A (en) 1982-04-07 1983-03-21 Method for checking insulative condition of insulated windings used in electrical appliances
DE8383102999T DE3368772D1 (en) 1982-04-07 1983-03-25 Method and apparatus for checking insulative condition of an insulated article
EP83102999A EP0091037B1 (en) 1982-04-07 1983-03-25 Method and apparatus for checking insulative condition of an insulated article

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP57059191A JPS58174845A (en) 1982-04-07 1982-04-07 Method of diagnosing insulation of insulated coil

Publications (2)

Publication Number Publication Date
JPS58174845A true JPS58174845A (en) 1983-10-13
JPH0126500B2 JPH0126500B2 (en) 1989-05-24

Family

ID=13106272

Family Applications (1)

Application Number Title Priority Date Filing Date
JP57059191A Granted JPS58174845A (en) 1982-04-07 1982-04-07 Method of diagnosing insulation of insulated coil

Country Status (1)

Country Link
JP (1) JPS58174845A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58179363A (en) * 1982-04-14 1983-10-20 Mitsubishi Electric Corp Method and apparatus for diagnosing insulation of electrical machinery and apparatus
JPS6468628A (en) * 1987-09-09 1989-03-14 Hitachi Metals Ltd Evaluation testing method for metal plate residual strain
JP2010256348A (en) * 2009-03-31 2010-11-11 Toray Ind Inc Method and apparatus for diagnosing deterioration in insulation of winding

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58179363A (en) * 1982-04-14 1983-10-20 Mitsubishi Electric Corp Method and apparatus for diagnosing insulation of electrical machinery and apparatus
JPS6468628A (en) * 1987-09-09 1989-03-14 Hitachi Metals Ltd Evaluation testing method for metal plate residual strain
JP2010256348A (en) * 2009-03-31 2010-11-11 Toray Ind Inc Method and apparatus for diagnosing deterioration in insulation of winding

Also Published As

Publication number Publication date
JPH0126500B2 (en) 1989-05-24

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