JPS62158366U - - Google Patents
Info
- Publication number
- JPS62158366U JPS62158366U JP4724586U JP4724586U JPS62158366U JP S62158366 U JPS62158366 U JP S62158366U JP 4724586 U JP4724586 U JP 4724586U JP 4724586 U JP4724586 U JP 4724586U JP S62158366 U JPS62158366 U JP S62158366U
- Authority
- JP
- Japan
- Prior art keywords
- frequency
- transformer
- detection
- injection
- split end
- 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 8
- 238000002347 injection Methods 0.000 claims description 6
- 239000007924 injection Substances 0.000 claims description 6
- 239000004020 conductor Substances 0.000 claims description 3
- 238000005259 measurement Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 4
Landscapes
- Measurement Of Resistance Or Impedance (AREA)
Description
第１図は本考案の接地抵抗測定装置のＣＴの概
要図、第２図は従来の技術の接地抵抗測定装置の
動作概要を説明するための図、第３図は注入用Ｃ
Ｔ側又は検出用ＣＴ側から見た接地抵抗測定装置
のＣＴ周辺の構造図である。
１……被測定回路網、２……被測定抵抗体、３
……回路電源、ｌ……接続導線、４，４０……注
入用ＣＴ、５，５０……検出用ＣＴ、７……発振
器（ＯＳＣ）、９……周波数選択増幅器（ＢＰＡ
）、１０……整流増幅器、１１……表示部。
Fig. 1 is a schematic diagram of the CT of the grounding resistance measuring device of the present invention, Fig. 2 is a diagram for explaining the operation outline of the grounding resistance measuring device of the conventional technology, and Fig. 3 is a diagram of the CT of the grounding resistance measuring device of the present invention.
FIG. 2 is a structural diagram around the CT of the ground resistance measuring device as seen from the T side or the detection CT side. 1... Circuit network to be measured, 2... Resistor to be measured, 3
...Circuit power supply, l...Connection conductor, 4, 40...CT for injection, 5, 50...CT for detection, 7...Oscillator (OSC), 9...Frequency selective amplifier (BPA)
), 10... rectifier amplifier, 11... display section.
Claims (1)
用変成器分割端を開口してクリツプし前記被測定
回路網に在る周波数ｆ１の電流と弁別し得る周波
数ｆ２の電流を前記被測定回路網に注入する注入
コイルを有する注入用変成器と、前記被測定回路
網の接続導線を検出用変成器分割端を開口してク
リツプし前記被測定回路網に流れる周波数ｆ１及
び周波数ｆ２を検出する検出コイルを有する検出
用変成器と、該検出用変成器の出力のうちから周
波数ｆ２の成分を取出す周波数選択増幅器と、該
周波数選択増幅器の出力に基づいて前記被測定回
路網の接地抵抗の値を表示する表示部とを具備す
る接地抵抗測定装置において、前記注入コイルを
前記注入用変成器分割端を包含して設置し、前記
検出コイルを前記検出用変成器分割端を包含して
設置したことを特徴とする接地抵抗測定装置。 A connecting conductor of the circuit under test in a live state is clipped by opening the split end of the injection transformer, and a current of frequency f 2 that can be distinguished from the current of frequency f 1 present in the circuit under test is applied to the target circuit. An injection transformer having an injection coil to be injected into the measurement circuit network, and connecting conductors of the circuit network to be measured are clipped by opening the split end of the detection transformer, and frequency f1 and frequency f flowing to the circuit network to be measured are connected. a detection transformer having a detection coil for detecting frequency f2 ; a frequency selection amplifier for extracting a frequency f2 component from the output of the detection transformer; In the ground resistance measuring device, the injection coil is installed to include the injection transformer split end, and the detection coil is installed to include the detection transformer split end. A grounding resistance measuring device characterized in that it is installed to include the
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4724586U JPS62158366U (en) | 1986-03-31 | 1986-03-31 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4724586U JPS62158366U (en) | 1986-03-31 | 1986-03-31 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62158366U true JPS62158366U (en) | 1987-10-07 |
Family
ID=30867668
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4724586U Pending JPS62158366U (en) | 1986-03-31 | 1986-03-31 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62158366U (en) |
-
1986
- 1986-03-31 JP JP4724586U patent/JPS62158366U/ja active Pending
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