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 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US9417268B2 (en) | Earth/ground clamp for measuring earth resistance of electrical installations | |
CN101666846B (en) | System and method for detecting anomaly of secondary wiring of current mutual inductor | |
CN101326445A (en) | Method and device for measuring internal impedance of stationary battery | |
KR100402062B1 (en) | Apparatus for measuring ground resistance of transmission tower posts | |
KR930001555A (en) | Method and apparatus for controlling the output voltage of AC electrical systems | |
WO2008069249A1 (en) | Leakage current determining apparatus and leakage current determining method | |
CN211206604U (en) | Mobile electrical equipment on-line monitoring device | |
KR20000037146A (en) | A new technical method and equipment for the grounding resistance measurement on power service | |
EP0936469A3 (en) | Loop resistance tester (LRT) for cable shield integrity monitoring | |
JPH0633088U (en) | Power cable pass / fail measuring instrument for live lines | |
FR2435724A1 (en) | INDICATOR INSTRUMENT PROVIDED WITH A STATIC MEASURING CONVERTER FOR MEASURING ELECTRICAL POWER | |
JP4835286B2 (en) | Insulation monitoring system and method for low voltage electrical equipment | |
GB2231673A (en) | Detecting DC in AC waveforms | |
JP3127383B2 (en) | DC power cable application test method | |
JP4098900B2 (en) | measuring device | |
JPH0720577U (en) | Leakage current measuring device | |
CN206638731U (en) | A kind of electric harmonic detection means | |
JP4100536B2 (en) | High frequency noise removal method in power quality diagnosis | |
JPH088458Y2 (en) | Live line megger | |
CN115542009B (en) | Automatic detection system and method for electrical performance of copper bar | |
JP3796589B2 (en) | Cathodic protection method and cathodic protection device | |
CN218974562U (en) | Homonymous terminal detection system | |
JP2019164030A (en) | Of cable partial discharge diagnostic method | |
JPS5939774Y2 (en) | water cooled cable current detector | |
RU103191U1 (en) | MOBILE INSTALLATION FOR DIAGNOSTICS OF POWER TRANSFORMERS |