JPH0333018Y2 - - Google Patents
Info
- Publication number
- JPH0333018Y2 JPH0333018Y2 JP1982178345U JP17834582U JPH0333018Y2 JP H0333018 Y2 JPH0333018 Y2 JP H0333018Y2 JP 1982178345 U JP1982178345 U JP 1982178345U JP 17834582 U JP17834582 U JP 17834582U JP H0333018 Y2 JPH0333018 Y2 JP H0333018Y2
- Authority
- JP
- Japan
- Prior art keywords
- electrodes
- insulation resistance
- resistor
- resin plate
- changes
- 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.)
- Expired
Links
- 238000009413 insulation Methods 0.000 claims description 36
- 238000001514 detection method Methods 0.000 claims description 25
- 229920005989 resin Polymers 0.000 claims description 20
- 239000011347 resin Substances 0.000 claims description 20
- 230000001681 protective effect Effects 0.000 claims description 6
- 230000002265 prevention Effects 0.000 claims description 2
- 239000012212 insulator Substances 0.000 description 7
- 239000000428 dust Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 230000007613 environmental effect Effects 0.000 description 3
- 230000006866 deterioration Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical compound [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 239000012774 insulation material Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000005011 phenolic resin Substances 0.000 description 1
- 229920001568 phenolic resin Polymers 0.000 description 1
- 238000004381 surface treatment Methods 0.000 description 1
Description
【考案の詳細な説明】
〔産業上の利用分野〕
本考案は、配電盤内における端子台等の絶縁物
の絶縁抵抗値の変化を検出する絶縁抵抗検出装置
に関する。[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to an insulation resistance detection device for detecting a change in the insulation resistance value of an insulator such as a terminal block in a switchboard.
従来、絶縁物の絶縁抵抗値の測定には、メガと
呼ばれる絶縁抵抗計が使用されているが、この種
絶縁抵抗測定装置では、温度、湿度の変化および
埃の付着などによる絶縁抵抗値の変化を記録する
場合、直流電圧を連続して印加できないため、連
続記録が行なえず、絶縁抵抗値の変化を常時監視
することができない欠点があり、絶縁物の絶縁劣
化を未然に防止することが困難な問題がある。
Conventionally, an insulation resistance meter called a megger has been used to measure the insulation resistance value of insulators, but this type of insulation resistance measuring device can detect changes in the insulation resistance value due to changes in temperature, humidity, adhesion of dust, etc. When recording, DC voltage cannot be continuously applied, so continuous recording cannot be performed, and changes in insulation resistance cannot be constantly monitored, making it difficult to prevent insulation deterioration of insulation materials. There is a problem.
〔考案が解決しようとする課題〕
本考案は、従来の技術の有するこのような問題
点に留意してなされたものであり、その目的とす
るところは、温度、湿度の変化や埃の付着などの
環境変化による絶縁物の絶縁抵抗値の変化を常時
監視できる絶縁抵抗検出装置を提供することにあ
る。[Problems to be solved by the invention] The present invention has been made with these problems in the conventional technology in mind, and its purpose is to solve problems such as changes in temperature and humidity, and the adhesion of dust. An object of the present invention is to provide an insulation resistance detection device that can constantly monitor changes in the insulation resistance value of an insulator due to environmental changes.
前記目的を達成するために、本考案の絶縁抵抗
検出装置においては、樹脂板の片面に、所定の絶
縁寸法に隔てられた１対の平行な電極と保護用抵
抗と検出用抵抗とを直列接続して装着し、樹脂板
の少なくとも両電極の装着部分を表面無処理とす
ると共に、樹脂板の保護用抵抗と検出用抵抗との
間に漏れ電流防止用切込部を透設し、両電極と保
護用抵抗と検出用抵抗との直列回路に電圧を印加
し、検出用抵抗の両端の電圧値により両電極間の
絶縁抵抗値を検出する。
In order to achieve the above object, in the insulation resistance detection device of the present invention, a pair of parallel electrodes separated by a predetermined insulation dimension, a protection resistor, and a detection resistor are connected in series on one side of a resin plate. At least the parts of the resin plate where both electrodes are attached are left untreated, and a notch for leakage current prevention is made transparent between the protective resistor and the detection resistor of the resin plate. A voltage is applied to the series circuit of the protection resistor and the detection resistor, and the insulation resistance value between the two electrodes is detected from the voltage value across the detection resistor.
前述のように構成された絶縁抵抗検出装置にあ
つては、両電極と保護用抵抗と検出用抵抗との直
列回路に電圧を印加しておくことにより、検出用
抵抗の両端の電圧値から樹脂板における両電極間
の絶縁抵抗値を得ることができるため、この絶縁
抵抗値の常時監視が可能となり、しかも、樹脂板
の両電極間は表面無処理として温度、湿度や埃の
付着などの環境の影響を受け易くしてあるため、
環境の変化による絶縁抵抗値の変化を容易かつ確
実に検出できる。
In the insulation resistance detection device configured as described above, by applying a voltage to the series circuit of both electrodes, the protective resistor, and the detection resistor, the voltage value at both ends of the detection resistor is determined by the resin. Since the insulation resistance value between both electrodes on the board can be obtained, it is possible to constantly monitor this insulation resistance value, and the surface between the two electrodes on the resin board is not treated, so it is free from environmental conditions such as temperature, humidity, and dust adhesion. Because it is easily influenced by
Changes in insulation resistance due to changes in the environment can be easily and reliably detected.
１実施例につき、第１図及び第２図を用いて説
明する。
One embodiment will be explained using FIG. 1 and FIG. 2.
これらの図面において、１は表面無処理のフエ
ノール樹脂製の樹脂板、２，２′は樹脂板１の片
面の左側部に所定の絶縁寸法14mmを隔てて平行に
装着された長さ30mmの２個の電極であり、この絶
縁寸法14mmはたとえば端子台等の低圧機器の延面
距離を想定したものである。 In these drawings, 1 is a resin plate made of phenolic resin with no surface treatment, and 2 and 2' are 30 mm long resin plates mounted in parallel on the left side of one side of the resin plate 1 with a predetermined insulation distance of 14 mm. This insulation dimension of 14 mm is based on the assumption that the total surface distance of low-voltage equipment such as a terminal block is assumed.
３，３′は樹脂板１の片面の両電極２，２′の左
右外側部に設けられそれぞれ導体４，４′を介し
て電極２，２′に接続された端子、５は樹脂板１
の右側部に透設された漏れ電流防止用の切込部、
６，７は樹脂板１の片面の切込部５より右側に設
けられた端子であり、両端子３′，６間および両
端子６，７間のそれぞれの寸法は前記電極２，
２′間の寸法14mm以上に設定されている。 3 and 3' are terminals provided on the left and right outer sides of both electrodes 2 and 2' on one side of the resin plate 1 and connected to the electrodes 2 and 2' via conductors 4 and 4', respectively; 5 is the resin plate 1;
A notch for preventing leakage current is cut through the right side of the
6 and 7 are terminals provided on the right side of the notch 5 on one side of the resin plate 1, and the dimensions between the terminals 3' and 6 and between the terminals 6 and 7 are the same as those of the electrodes 2, 7.
The distance between 2' is set to 14mm or more.
R1は両端子３′，６間に接続されたＭΩの保
護用抵抗、R2は両端子６，７間に接続された
ＭΩの検出用抵抗である。 R 1 is a MΩ protection resistor connected between both terminals 3' and 6, and R 2 is an MΩ detection resistor connected between both terminals 6 and 7.
そして、第２図に示すように、両電極２，２′
と保護用抵抗R1と検出用抵抗R2との直列回路の
両端、すなわち両端子３，７間に、100〜150Vの
直流電圧を印加し、検出用抵抗R2の両端、すな
わち両端子６，７間の電圧を検出する。 Then, as shown in FIG. 2, both electrodes 2, 2'
A DC voltage of 100 to 150 V is applied between both ends of the series circuit of protection resistor R 1 and detection resistor R 2 , that is, both terminals 3 and 7, and both ends of the detection resistor R 2 , that is, both terminals 6 , 7 is detected.
いま、印加電圧をVin、検出電圧をVout、保
護用抵抗R1および検出用抵抗R2のそれぞれの抵
抗値をZ1およびZ2とすると、両電極２，２′間の
絶縁抵抗値Zxは次式で与えられる。 Now, assuming that the applied voltage is Vin, the detection voltage is Vout, and the resistance values of the protective resistor R 1 and the detection resistor R 2 are Z 1 and Z 2 , respectively, the insulation resistance value Zx between the electrodes 2 and 2' is It is given by the following formula.
Zx＝Vin−Vout／Vout・Z2−Z1
したがつて、電極２，２′に直列に接続された
検出用抵抗R2の両端の電圧を検出することによ
り、両電極２，２′間の絶縁抵抗値を得ることが
できるため、この絶縁抵抗値を連続して検出する
ことにより温度、湿度の変化に伴う絶縁抵抗値の
変化を常時監視し、連続記録することができ、ま
た、埃の付着などによる絶縁抵抗値の低下も確実
に検出することができ、絶縁物の長期的劣化の防
止を図ることが可能となる。 Zx=Vin-Vout/Vout・Z 2 -Z 1 Therefore, by detecting the voltage across the detection resistor R 2 connected in series with the electrodes 2, 2', By continuously detecting this insulation resistance value, it is possible to constantly monitor and continuously record changes in insulation resistance value due to changes in temperature and humidity. It is also possible to reliably detect a decrease in the insulation resistance value due to the adhesion of insulators, etc., making it possible to prevent long-term deterioration of the insulator.
なお、前記実施例では、電極２，２′間の絶縁
寸法や樹脂板１の材質を配電盤内の端子台等の低
圧機器を想定して設定し、配電盤内の環境の変化
による低圧機器の絶縁抵抗の変化を常時監視する
ようにしたが、他の機器における絶縁抵抗の変化
を検出する場合には、電極２，２′間の絶縁寸法
又は樹脂板１の材質をその機器に応じて設定すれ
ばよい。 In the above embodiment, the insulation dimensions between the electrodes 2 and 2' and the material of the resin plate 1 are set assuming low-voltage equipment such as a terminal block in a switchboard, and insulation of low-voltage equipment due to changes in the environment inside the switchboard is set. Changes in resistance are constantly monitored, but when detecting changes in insulation resistance in other equipment, the insulation dimensions between electrodes 2 and 2' or the material of resin plate 1 must be set according to the equipment. Bye.
本考案は、以上説明したように構成されている
ため、つぎに記載する効果を奏する。
Since the present invention is configured as described above, it produces the effects described below.
樹脂板の片面に装着された１対の電極と保護用
抵抗と検出用抵抗との直列回路に電圧を印加して
検出用抵抗の両端の電圧値から両電極間の絶縁抵
抗値を得るようにしたため、樹脂板における両電
極間の絶縁抵抗を常時監視することができ、しか
も、樹脂板の片面の両電極装着部分を表面無処理
として温度、湿度の変化や埃の付着などの環境の
影響を受け易くしているため、環境の変化による
絶縁物の絶縁抵抗の変化を適切に検出でき、簡単
な構成で環境変化による絶縁抵抗の変化を検出で
きるものである。 A voltage is applied to a series circuit consisting of a pair of electrodes attached to one side of the resin plate, a protective resistor, and a detection resistor, and the insulation resistance value between the two electrodes is obtained from the voltage value across the detection resistor. As a result, the insulation resistance between both electrodes on the resin plate can be constantly monitored, and the area where both electrodes are attached on one side of the resin plate is not surface-treated, making it possible to avoid environmental influences such as changes in temperature and humidity, and dust adhesion. Since the sensor is easily sensitive to changes in the insulation resistance of the insulator due to changes in the environment, it is possible to appropriately detect changes in the insulation resistance of the insulator due to changes in the environment, and changes in insulation resistance due to changes in the environment can be detected with a simple configuration.
図面は本考案の絶縁抵抗検出装置の１実施例を
示し、第１図は構成図、第２図は回路図である。
１……樹脂板、２，２′……電極、R1……保護
用抵抗、R2……検出用抵抗、５……切込部。
The drawings show one embodiment of the insulation resistance detection device of the present invention, with FIG. 1 being a configuration diagram and FIG. 2 being a circuit diagram. 1... Resin plate, 2, 2'... Electrode, R 1 ... Protection resistor, R 2 ... Detection resistor, 5... Notch.
Claims (1)
１対の平行な電極と保護用抵抗と検出用抵抗とを
直列接続して装着し、前記樹脂板の少なくとも前
記両電極の装着部分を表面無処理とすると共に、
前記樹脂板の前記保護用抵抗と前記検出用抵抗と
の間に漏れ電流防止用切込部を透設し、前記両電
極と前記保護用抵抗と前記検出用抵抗との直列回
路に電圧を印加し、前記検出用抵抗の両端の電圧
値により前記両電極間の絶縁抵抗値を検出するよ
うにした絶縁抵抗検出装置。 A pair of parallel electrodes separated by a predetermined insulation dimension, a protection resistor, and a detection resistor are connected in series and attached to one side of the resin plate, and at least the part of the resin plate where both the electrodes are attached is attached to the surface. In addition to being unprocessed,
A leakage current prevention notch is provided between the protective resistor and the detection resistor in the resin plate, and a voltage is applied to a series circuit of both electrodes, the protective resistor, and the detection resistor. The insulation resistance detection device is configured to detect an insulation resistance value between the two electrodes based on a voltage value across the detection resistor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17834582U JPS5982872U (en) | 1982-11-25 | 1982-11-25 | Insulation resistance detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17834582U JPS5982872U (en) | 1982-11-25 | 1982-11-25 | Insulation resistance detection device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5982872U JPS5982872U (en) | 1984-06-04 |
| JPH0333018Y2 true JPH0333018Y2 (en) | 1991-07-12 |
Family
ID=30387229
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP17834582U Granted JPS5982872U (en) | 1982-11-25 | 1982-11-25 | Insulation resistance detection device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5982872U (en) |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4959052U (en) * | 1972-08-31 | 1974-05-24 |
-
1982
- 1982-11-25 JP JP17834582U patent/JPS5982872U/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5982872U (en) | 1984-06-04 |
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