JPH0633088U - Power cable pass / fail measuring instrument for live lines - Google Patents
Power cable pass / fail measuring instrument for live linesInfo
- Publication number
- JPH0633088U JPH0633088U JP7926692U JP7926692U JPH0633088U JP H0633088 U JPH0633088 U JP H0633088U JP 7926692 U JP7926692 U JP 7926692U JP 7926692 U JP7926692 U JP 7926692U JP H0633088 U JPH0633088 U JP H0633088U
- Authority
- JP
- Japan
- Prior art keywords
- power cable
- positive
- measuring instrument
- output
- negative
- 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 Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
- Testing Relating To Insulation (AREA)
Abstract
(57)【要約】 （修正有）
【目的】 活線用電力ケーブル良否を検知する。
【構成】 電力ケーブル接地線３を零相変流器５に貫通
し、水トリ−電流を含む接地線電流を正負出力理想半波
整流器８で正負半波整流し、片方を１８０°移相器９で
１８０°移相し、正負出力を加算（またわ減算）器１０
で加減算し測定する。
(57) [Summary] (Correction) [Purpose] To detect the quality of live power cables. [Structure] The power cable ground wire 3 is passed through the zero-phase current transformer 5, and the ground wire current including the water tri-current is positive / negative half-wave rectified by the positive / negative output ideal half-wave rectifier 8, and a 180 ° phase shifter for one Phase shifter 180 ° at 9 and add (or subtract) positive and negative outputs 10
Add and subtract with to measure.
Description
【考案の詳細な説明】 本考案は活線用電力ケーブル診断ができるようにした測定器に関するものであ る．従来ケーブル診断には絶縁測定器による絶縁測定があるが電路を停電するた め使用中の電気機器を停止する欠点がある。本考案はその欠点を除くためのもの でこれを図面について説明すれば．３のケーブル接地線を．５の零相変流器に１ 回またわ復数回貫通し出力電圧を．７の調整回路つき下限リミッター回路器に入 力．出力を．８の正負出力が得られる理想半波整流器に入力．正負出力の片方を ９の１８０°移相（またわ１８０°移相の極性反転）回路器に入力．出力を． ８の別の方の出力と．１０の加算（またわ減算）回路器に入力．活線ケーブルの 良否を検知．１１の電圧計が測定する。[Detailed Description of the Invention] The present invention relates to a measuring instrument capable of diagnosing a live power cable. Conventionally, cable diagnostics involve insulation measurement with an insulation measuring instrument, but they have the drawback of stopping the electrical equipment in use because of a power failure in the circuit. The present invention is intended to eliminate the drawbacks, and this will be explained with reference to the drawings. 3 cable ground wire. The output voltage is passed through the zero-phase current transformer of No. 5 once or several times. Input to the lower limiter circuit unit with adjusting circuit of 7. Output. Input to an ideal half-wave rectifier that can obtain 8 positive and negative outputs. Input one of the positive and negative outputs to 9 180 ° phase shift (or 180 ° phase shift polarity reversal) circuit. Output. And the output of the other one of 8. Input to 10 addition (or subtraction) circuit. Detects the quality of live cables. Eleven voltmeters measure.
【図面の簡単な説明】 図面は本考案活線用電力ケーブル良否測定器の概略図．
１は電線路．２は電力用ケーブル．３は接地線．４は接
地線（無接地）．５は零相変流器．６は接地極７は調整
つき下限リミッター．８は正負出力理想半波整流器．９
は１８０°移相（またわ１８０°移相の極性反転）器．
１０は加算（またわ減算）器．１１は電圧計。BRIEF DESCRIPTION OF THE DRAWINGS The drawing is a schematic view of the power cable quality measuring device for a live wire of the present invention.
1 is an electric line. 2 is a power cable. 3 is a ground wire. 4 is a ground wire (no ground). 5 is a zero-phase current transformer. 6 is a grounding electrode 7 is a lower limiter with adjustment. 8 is a positive / negative output ideal half-wave rectifier. 9
Is a 180 ° phase shifter (or 180 ° phase shift polarity reversal).
10 is an adder (or subtractor). 11 is a voltmeter.
Claims (1)
を正負出力の半波整流正出力．負出力の片方を１８０°
移相（またわ１８０°移相の極性を反転）．別の出力と
加算（またわ減算）回路器に入力．活線用電力ケーブル
良否を検知することを特徴とする測定器Half-wave rectified positive output with positive and negative output for the through output voltage through the zero-phase current transformer to the ground wire of the live power cable. 180 ° for one of the negative outputs
Phase shift (again reverse polarity of 180 ° phase shift). Input to another output and addition (or subtraction) circuit. Measuring instrument characterized by detecting the quality of a live power cable
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7926692U JPH0633088U (en) | 1992-10-06 | 1992-10-06 | Power cable pass / fail measuring instrument for live lines |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7926692U JPH0633088U (en) | 1992-10-06 | 1992-10-06 | Power cable pass / fail measuring instrument for live lines |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0633088U true JPH0633088U (en) | 1994-04-28 |
Family
ID=13685065
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7926692U Pending JPH0633088U (en) | 1992-10-06 | 1992-10-06 | Power cable pass / fail measuring instrument for live lines |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0633088U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09144270A (en) * | 1995-11-16 | 1997-06-03 | Oomura Giken Kk | Substrate frame for wall board material and substrate frame fixture |
-
1992
- 1992-10-06 JP JP7926692U patent/JPH0633088U/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09144270A (en) * | 1995-11-16 | 1997-06-03 | Oomura Giken Kk | Substrate frame for wall board material and substrate frame fixture |
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