JPH06318505A - Sorting method for zinc oxide element - Google Patents
Sorting method for zinc oxide elementInfo
- Publication number
- JPH06318505A JPH06318505A JP5107962A JP10796293A JPH06318505A JP H06318505 A JPH06318505 A JP H06318505A JP 5107962 A JP5107962 A JP 5107962A JP 10796293 A JP10796293 A JP 10796293A JP H06318505 A JPH06318505 A JP H06318505A
- Authority
- JP
- Japan
- Prior art keywords
- zinc oxide
- oxide element
- sorting
- value
- electrifying
- 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
Links
Landscapes
- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
- Investigating Or Analyzing Materials Using Thermal Means (AREA)
- Apparatuses And Processes For Manufacturing Resistors (AREA)
- Thermistors And Varistors (AREA)
Abstract
Description
【0001】[0001]
【産業上の利用分野】本発明は電力用避雷器に使用する
酸化亜鉛素子の選別方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for selecting a zinc oxide element used for a power arrester.
【0002】[0002]
【従来の技術】酸化亜鉛素子に素子径で定まる一定電流
値(例:開閉インパルス電流)を通電し、電気的に破壊
の有無を調査し酸化亜鉛素子の選別をしていた。酸化亜
鉛素子は、一般にエネルギーを注入し破壊する場合、電
気的に破壊のする前に、ワレ、キレツ等の機械的な破壊
が生じてから電気的に破壊にいたることが多い。通電す
る電流波形のちがいにより、機械的な破壊と電気的な破
壊がほぼ同時に生ずることもあるし、特殊なケースとし
機械的な破壊は生ずるが、電気的破壊にいたらないこと
もある。つまり電気的な破壊の有無をチェックするだけ
では確実に良好なる酸化亜鉛素子を選別できないとがわ
かる。2. Description of the Related Art A zinc oxide element is selected by conducting a constant current value (eg, a switching impulse current) determined by the element diameter and electrically inspecting the element for damage. In general, in the case of injecting energy into a zinc oxide element to destroy it, in many cases, mechanical destruction such as cracks and cracks occurs before electrical destruction and then electrical destruction. Due to the difference in the current waveform to be applied, mechanical breakdown and electrical breakdown may occur almost at the same time. In a special case, mechanical breakdown may occur, but electrical breakdown may not be achieved. In other words, it can be understood that a good zinc oxide element cannot be reliably selected only by checking the presence or absence of electrical breakdown.
【0003】酸化亜鉛素子の破壊は、機械的および電気
的な場合も弱い部分つまり素子内各部分の電流の不均一
で電流集中が起こる所を起点として生ずる。つまり、素
子内各部分の電流分布を正確に計測することにより素子
選別が可能となる。Destruction of a zinc oxide element occurs from a weak portion in mechanical and electrical terms, that is, a point where current concentration occurs due to nonuniform current in each portion in the element. That is, the element can be selected by accurately measuring the current distribution in each part in the element.
【0004】[0004]
【発明が解決しようとする課題】本発明は、上記事情に
鑑みなされたもので、より改善された良好なる酸化亜鉛
素子の選別方法を提供することを目的とする。SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and an object of the present invention is to provide an improved and improved method for selecting zinc oxide elements.
【0005】[0005]
【課題を解決するための手段】本発明は上記目的を達成
するため、酸化亜鉛素子に通電し、通電時の酸化亜鉛素
子の発熱分布を計測し、前記素子各部の温度上昇最高値
と最小値との比が所定値以内であることを酸化亜鉛素子
の選別基準とすることを特徴とする。To achieve the above object, the present invention energizes a zinc oxide element, measures the heat generation distribution of the zinc oxide element during energization, and determines the maximum and minimum values of temperature rise in each part of the element. It is characterized in that the selection standard of the zinc oxide element is that the ratio with the ratio is within a predetermined value.
【0006】[0006]
【作用】温度上昇最高値と最小値との比が所定値以内で
あるという選別基準を採用することにより電気的破壊検
出法のみでは選別できないよりきめこまかな酸化亜鉛素
子の選別をすることができる。By adopting the selection criterion that the ratio of the maximum value of temperature rise to the minimum value is within a predetermined value, it is possible to perform more detailed selection of zinc oxide elements that cannot be selected by only the electrical breakdown detection method.
【0007】[0007]
【実施例】本発明の一実施例を図面を参照して説明す
る。図面において、酸化亜鉛素子1の両端面にメタリコ
ン電極2を設け、少なくとも片面に黒色塗装3を施し、
その対向面側に放射形温度計4を配置する。酸化亜鉛素
子1に高圧電源部5より通電し、放射形温度計4によ
り、電極面の温度分布を計測しながら、通電を継続し素
子温度を上昇させる。このようにして、酸化亜鉛素子各
部の温度上昇最高値と最小値との比が基準値以内である
かどうかを選別基準として良好なる素子の選定を行う。
温度計測法としては、熱電対を使用する方法、サーモラ
ベルを使用する方法等がある。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to the drawings. In the drawing, metallikon electrodes 2 are provided on both end surfaces of a zinc oxide element 1, and a black coating 3 is applied on at least one surface,
Radial thermometer 4 is arranged on the opposite surface side. The zinc oxide element 1 is energized from the high-voltage power supply unit 5, and while the radiation type thermometer 4 measures the temperature distribution on the electrode surface, energization is continued to raise the element temperature. In this way, a good element is selected based on whether or not the ratio between the maximum value and the minimum value of the temperature rise of each part of the zinc oxide element is within the reference value as a selection criterion.
Examples of temperature measuring methods include a method using a thermocouple and a method using a thermo label.
【0008】[0008]
【発明の効果】以上述べたように本発明によれば、良好
なる素子のきめこまかな選別を可能ならしめることがで
きる。As described above, according to the present invention, it is possible to perform fine and fine selection of elements.
【図1】本発明の一実施例である放射形温度計を用いた
酸化亜鉛素子選別方法の例解図。FIG. 1 is an illustrative view of a zinc oxide element selection method using a radiation thermometer which is an embodiment of the present invention.
1…酸化亜鉛素子 2…メタリコン電極 3…黒色塗装 4…放射形温度計 5…高圧電源部 1 ... Zinc oxide element 2 ... Metallicon electrode 3 ... Black coating 4 ... Radiation thermometer 5 ... High voltage power supply
Claims (2)
鉛素子の発熱分布を計測し、前記素子各部の温度上昇最
高値と最小値との比が所定値以内であることを酸化亜鉛
素子の選別基準とすることを特徴とする酸化亜鉛素子選
別方法。1. The zinc oxide element is energized, the heat generation distribution of the zinc oxide element during energization is measured, and it is confirmed that the ratio of the maximum temperature rise and the minimum temperature rise of each part of the element is within a predetermined value. A method for selecting a zinc oxide element, characterized in that it is used as a selection criterion.
用いて行う請求項1記載の酸化亜鉛素子選別方法。2. The zinc oxide element selection method according to claim 1, wherein the heat generation distribution is measured using a radiation thermometer.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP5107962A JPH06318505A (en) | 1993-05-10 | 1993-05-10 | Sorting method for zinc oxide element |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP5107962A JPH06318505A (en) | 1993-05-10 | 1993-05-10 | Sorting method for zinc oxide element |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH06318505A true JPH06318505A (en) | 1994-11-15 |
Family
ID=14472486
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP5107962A Pending JPH06318505A (en) | 1993-05-10 | 1993-05-10 | Sorting method for zinc oxide element |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH06318505A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN1077322C (en) * | 1995-05-11 | 2002-01-02 | 株式会社日立制作所 | Method for estimating discharge capability of zinc oxide power element, method for screening element and systems for carrying out these methods |
JP2009139101A (en) * | 2007-12-03 | 2009-06-25 | Nichiyu Giken Kogyo Co Ltd | Temperature control indicator and temperature control method using it |
-
1993
- 1993-05-10 JP JP5107962A patent/JPH06318505A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN1077322C (en) * | 1995-05-11 | 2002-01-02 | 株式会社日立制作所 | Method for estimating discharge capability of zinc oxide power element, method for screening element and systems for carrying out these methods |
JP2009139101A (en) * | 2007-12-03 | 2009-06-25 | Nichiyu Giken Kogyo Co Ltd | Temperature control indicator and temperature control method using it |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US4698583A (en) | Method of monitoring a heater for faults | |
US3224497A (en) | Method and apparatus for lowering the temperature of a heated body | |
EP0441291B1 (en) | Withstand-voltage testing method and apparatus | |
Bartkowiak et al. | Influence of nonuniformity of ZnO varistors on their energy absorption capability | |
DK1047165T3 (en) | Barrier electrode for surface treatment of electrically conductive or non-conductive materials and arrangement of such barrier electrodes | |
JPH06318505A (en) | Sorting method for zinc oxide element | |
US8581494B2 (en) | Discharge lamp for GDS with an axial magnetic field | |
JP2505929B2 (en) | Apparatus and method for self-induction repair of short circuit and near short circuit | |
JPS6084744A (en) | Hot cathode | |
US3073943A (en) | Manufacture of electrical capacitors | |
US4962335A (en) | Deuterium lamp voltage supply means | |
JPH02171648A (en) | Defect detection of wire covered with insulating material and scan type ion source apparatus | |
GB2082752A (en) | Burner Igniter/Detector | |
JPH05226065A (en) | Surface heating body | |
JPH10300715A (en) | Method for inspecting leakage current in planartype lambda sensor | |
JPS6259260B2 (en) | ||
JPS6135113A (en) | Leakage detector of high temperature furnace | |
JPH0766010A (en) | Screening method of zinc oxide element | |
JPH06317507A (en) | Method for screening zinc oxide element | |
Kerns | 30-53 MHz SUPER CAVITIES FOR lo-GeV ACCELERATION IN THE FERMILAB BOOSTER RING | |
JPH0531549Y2 (en) | ||
ATE222827T1 (en) | JOINING ELECTRICALLY CONDUCTIVE PARTS BY HEATING USING ELECTRICAL CURRENT | |
JPS60243674A (en) | Electrostatically charging device | |
Oda et al. | Charge behavior analysis in thin solid film by using simultaneous TSDC and LIPP measurements | |
SU1116362A1 (en) | Method of determining adhesion strength of current-conducting coatings |