JPH0323370U - - Google Patents
Info
- Publication number
- JPH0323370U JPH0323370U JP8431189U JP8431189U JPH0323370U JP H0323370 U JPH0323370 U JP H0323370U JP 8431189 U JP8431189 U JP 8431189U JP 8431189 U JP8431189 U JP 8431189U JP H0323370 U JPH0323370 U JP H0323370U
- Authority
- JP
- Japan
- Prior art keywords
- high frequency
- detection electrode
- voltage
- conduit
- detection device
- 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
- 238000001514 detection method Methods 0.000 claims description 22
- 230000008878 coupling Effects 0.000 claims description 7
- 238000010168 coupling process Methods 0.000 claims description 7
- 238000005859 coupling reaction Methods 0.000 claims description 7
- 239000003990 capacitor Substances 0.000 claims description 5
- 239000004020 conductor Substances 0.000 claims description 5
- 238000000605 extraction Methods 0.000 claims description 4
- 230000000903 blocking effect Effects 0.000 claims description 3
- 238000004804 winding Methods 0.000 claims 2
- 230000003321 amplification Effects 0.000 claims 1
- 238000010292 electrical insulation Methods 0.000 claims 1
- 238000003199 nucleic acid amplification method Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 7
Landscapes
- Testing Electric Properties And Detecting Electric Faults (AREA)
- Gas-Insulated Switchgears (AREA)
- Protection Of Static Devices (AREA)
Description
第１図はこの考案の第１の実施例の検電装置の
構成を示す概略図、第２図は第１図の検電装置の
等価回路図、第３図はこの考案の第２の実施例の
検電装置の構成を示す概略図、第４図はこの考案
の第３の実施例の検電装置の構成を示す要部回路
図、第５図はこの考案の第４の実施例の検電装置
の構成を示す要部回路図、第６図はこの考案の第
５の実施例の検電装置の構成を示す要部回路図、
第７図はこの考案の第６の実施例の検電装置の構
成を示す概略図、第８図は検電装置の従来例の構
成を示す概略図、第９図は第８図の検電装置の等
価回路図である。
１……高圧導体、２……管路、３，３Ａ，３Ｂ
……検出電極、４……引出端子、９……高周波阻
止コイル、１０……結合コンデンサ、１１……商
用周波用増幅器、１２……高周波用増幅器、２１
……高周波抽出手段、３１，３２……結合コンデ
ンサ、３３〜３５……抵抗。
Fig. 1 is a schematic diagram showing the configuration of a voltage detecting device according to a first embodiment of this invention, Fig. 2 is an equivalent circuit diagram of the voltage detecting device of Fig. 1, and Fig. 3 is a second embodiment of this invention. FIG. 4 is a schematic diagram showing the configuration of the voltage detection device according to the third embodiment of the present invention. FIG. FIG. 6 is a main circuit diagram showing the configuration of a voltage detection device according to a fifth embodiment of the present invention; FIG.
FIG. 7 is a schematic diagram showing the configuration of the voltage detection device according to the sixth embodiment of this invention, FIG. 8 is a schematic diagram showing the configuration of a conventional example of the voltage detection device, and FIG. 9 is the voltage detection device of FIG. 8. FIG. 3 is an equivalent circuit diagram of the device. 1...High voltage conductor, 2...Pipe line, 3, 3A, 3B
...Detection electrode, 4...Output terminal, 9...High frequency blocking coil, 10...Coupling capacitor, 11...Commercial frequency amplifier, 12...High frequency amplifier, 21
...High frequency extraction means, 31, 32...Coupling capacitor, 33-35...Resistor.
Claims (1)
記高圧導体および管路と電気絶縁状態で検出電極
を配設し、前記検出電極と管路との間に生じる電
圧を増幅する商用周波用増幅器を設けた検電装置
において、 前記検出電極と管路との間に生じる電圧から高
周波成分を抽出する高周波抽出手段を設けるとと
もに、前記高周波抽出手段の出力を増幅する高周
波用増幅器を設けたことを特徴とする検電装置。 (2) 高周波抽出手段は、検出電極と商用周波用
増幅器との間に介在させた高周波阻止手段と、前
記検出電極と高周波用増幅器との間に介在させた
高周波結合手段とからなり、前記高周波結合手段
を前記検出電極と前記高周波用増幅器との間に接
続した結合コンデンサおよびこの結合コンデンサ
の一端とグラウンドとの間に接続した抵抗とで構
成している請求項(1)記載の検電装置。 (3) 高圧導体を包囲する接地された管路内に前
記高圧導体および管路と電気絶縁状態で検出電極
を配設し、前記検出電極と管路との間に生じる電
圧を増幅する商用周波用増幅器を設けた検電装置
において、 前記検出電極を相互に電気絶縁状態で対面した
２枚で構成し、２枚の検出電極間を高周波阻止コ
イルで接続するとともに結合コンデンサおよび高
周波トランスの一次巻線の直列回路を介して接続
し、前記高周波トランスの二次巻線の出力を増幅
する高周波用増幅器を設けたことを特徴とする検
電装置。[Claims for Utility Model Registration] (1) A detection electrode is disposed in a grounded conduit surrounding a high-voltage conductor in an electrically insulated state from the high-voltage conductor and the conduit, and between the detection electrode and the conduit. In a voltage detection device equipped with a commercial frequency amplifier for amplifying the voltage generated between the detection electrode and the conduit, a high frequency extraction means is provided for extracting a high frequency component from the voltage generated between the detection electrode and the pipe, and the output of the high frequency extraction means is A voltage detection device characterized by being equipped with a high frequency amplifier for amplification. (2) The high frequency extraction means includes a high frequency blocking means interposed between the detection electrode and the commercial frequency amplifier, and a high frequency coupling means interposed between the detection electrode and the high frequency amplifier. The voltage detection device according to claim (1), wherein the coupling means comprises a coupling capacitor connected between the detection electrode and the high-frequency amplifier, and a resistor connected between one end of the coupling capacitor and ground. . (3) A detection electrode is arranged in a grounded conduit surrounding a high-voltage conductor in a state of electrical insulation from the high-voltage conductor and the conduit, and a commercial frequency signal is used to amplify the voltage generated between the detection electrode and the conduit. In a voltage detection device equipped with an amplifier, the detection electrode is composed of two plates facing each other in an electrically insulated state, and a high frequency blocking coil is connected between the two detection electrodes, and a coupling capacitor and a primary winding of a high frequency transformer are connected. 1. A voltage detection device comprising a high frequency amplifier connected through a series circuit of wires to amplify the output of the secondary winding of the high frequency transformer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8431189U JPH0323370U (en) | 1989-07-17 | 1989-07-17 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8431189U JPH0323370U (en) | 1989-07-17 | 1989-07-17 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0323370U true JPH0323370U (en) | 1991-03-11 |
Family
ID=31632694
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8431189U Pending JPH0323370U (en) | 1989-07-17 | 1989-07-17 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0323370U (en) |
-
1989
- 1989-07-17 JP JP8431189U patent/JPH0323370U/ja active Pending
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