SU1177778A1 - Method of determining coordinates of flaws in electric insulation materials - Google Patents
Method of determining coordinates of flaws in electric insulation materials Download PDFInfo
- Publication number
- SU1177778A1 SU1177778A1 SU833569675A SU3569675A SU1177778A1 SU 1177778 A1 SU1177778 A1 SU 1177778A1 SU 833569675 A SU833569675 A SU 833569675A SU 3569675 A SU3569675 A SU 3569675A SU 1177778 A1 SU1177778 A1 SU 1177778A1
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- SU
- USSR - Soviet Union
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- frequency
- defect
- coordinates
- electrodes
- sample
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- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
Abstract
СПОСОБ ОПРЕДЕЛЕНИЯ КООРДИНАТ ДЕФЕКТОВ В ЭЛЕКТРОИЗОЛЯЦИОННЫХ МАТЕРИАЛАХ, включающий воздействие испытательного напр жени на образец. Одразец регистрацию тока пробо в месте дефекта и фиксацию координаты дефекта относительно электродов, отличающийс тем, что, с целью повышени точности, при возникновении серии пробоев дополнительно измер ют частоту импульсов тока пробо , определ ют максимум этой частоты путем перемещени образца относительно электродов и фиксируют уточненные значени координат дефекта , при которых-имеет место максимум частоты импульсов тока пробо . (П 90A METHOD FOR DETERMINING COORDINATES OF DEFECTS IN ELECTRICAL INSULATING MATERIALS, including the effect of a test voltage on a sample. Odraz the registration of the current of the sample in the defect and fixing the coordinates of the defect relative to the electrodes, characterized in that, in order to improve the accuracy, when a series of breakdowns occur, the frequency of the current pulse is determined, the maximum of this frequency is determined by moving the sample relative to the electrodes and fixed defect coordinates, at which the maximum frequency of current pulses takes place. (P 90
Description
1 Изобретение относитс к контрол но-измерительной технике и может быть использовано дл обнаружени локальных дефектов (сквозных отвер стий, трещин, пор) в электроизол ционных, преимущественно пленочных материалах при их производстве и использовании в различных отрасл х промьшшенности. Цель изобретени - повышение точности определени координат дефектов в электроизол ционных материалах . На чертеже изображена схема уст ройства дл осуществлени предлага мого способа. Устройство содержит источник 1 испытательного напр жени , соединенный через токоограничивающий ре зистор 2 с испытательным электродом 3 и через индикатор 4 тока про бо с испытательным электродом 5, 82 св занным с регистратором 6 координат , частотомер 7 подключен, параллельно индикатору 4. Устройство работает следующим рбразом. . Испытуемый образец помещают между электродами 3 и 5. Величину испытательного напр жени U выбирают из услови ,, где Ug пробивное напр жение воздушного промежутка между электродами в отсутствие испытуемого образца; U - пробивное напр жение материала испытуемого образца без дефектов. Прикладывают испытательное напр жение к электродам. В момент пробоч измер ют частоту импульсов тока пробо . Перемеща образец относительно электродов , наход т максимум этой частоты и отсчитывают значение координаты дефекта относительно электродов на регистраторе 6 координат.1 The invention relates to a measuring and measuring technique and can be used to detect local defects (through holes, cracks, pores) in electrical insulating materials, mainly film materials, during their production and use in various industrial zones. The purpose of the invention is to improve the accuracy of determining the coordinates of defects in electrically insulating materials. The drawing shows a diagram of an apparatus for carrying out the proposed method. The device contains a source of test voltage 1, connected through a current limiting resistor 2 to test electrode 3 and through a current indicator 4 about test electrode 5, 82 connected with the recorder 6 coordinates, frequency meter 7 is connected, parallel to indicator 4. The device operates as follows . . The test sample is placed between electrodes 3 and 5. The test voltage U is chosen from the condition, where Ug is the breakdown voltage of the air gap between the electrodes in the absence of the test sample; U is the breakdown voltage of the material of the test sample without defects. Apply test voltage to the electrodes. At the time of the slider, the frequency of the current pulse was measured. By moving the sample relative to the electrodes, the maximum of this frequency is found and the value of the coordinate of the defect relative to the electrodes on the recorder is measured 6 coordinates.
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU833569675A SU1177778A1 (en) | 1983-01-10 | 1983-01-10 | Method of determining coordinates of flaws in electric insulation materials |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU833569675A SU1177778A1 (en) | 1983-01-10 | 1983-01-10 | Method of determining coordinates of flaws in electric insulation materials |
Publications (1)
Publication Number | Publication Date |
---|---|
SU1177778A1 true SU1177778A1 (en) | 1985-09-07 |
Family
ID=21055644
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SU833569675A SU1177778A1 (en) | 1983-01-10 | 1983-01-10 | Method of determining coordinates of flaws in electric insulation materials |
Country Status (1)
Country | Link |
---|---|
SU (1) | SU1177778A1 (en) |
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1983
- 1983-01-10 SU SU833569675A patent/SU1177778A1/en active
Non-Patent Citations (1)
Title |
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Электрические свойства полимеров.Под ред. Б.И.Сажина. Хими , Ленинградское отделение, 1977, с. 93. * |
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