JPH01128180U - - Google Patents
Info
- Publication number
- JPH01128180U JPH01128180U JP2306888U JP2306888U JPH01128180U JP H01128180 U JPH01128180 U JP H01128180U JP 2306888 U JP2306888 U JP 2306888U JP 2306888 U JP2306888 U JP 2306888U JP H01128180 U JPH01128180 U JP H01128180U
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- power generation
- pulsed voltage
- megger
- live wire
- 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
- 238000005259 measurement Methods 0.000 claims description 3
- 238000009413 insulation Methods 0.000 claims description 2
- 238000002955 isolation Methods 0.000 claims description 2
- 238000010248 power generation Methods 0.000 claims 3
- 239000003990 capacitor Substances 0.000 claims 1
- 230000004907 flux Effects 0.000 claims 1
- 238000009499 grossing Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Locating Faults (AREA)
Description
第１図は本考案の方向性活線メガーの構成説明
図、第２図は従来の活線メガーの説明図である。
１……活線メガー、２……測定用スイツチ、３
……絶縁トランス、４……全波整流器、５……絶
縁抵抗指示計、６……方向判別電流発生スイツチ
、７……微分回路、８……方向測定切替用スイツ
チ、９……変流器、１０……方向判別指示計、１
１……被測定回路、１２……方向性活線メガー、
１３……測定線、１４……接地点。
FIG. 1 is an explanatory diagram of the configuration of a directional live wire megger of the present invention, and FIG. 2 is an explanatory diagram of a conventional live wire megger. 1...Live wire megger, 2...Measuring switch, 3
...Isolation transformer, 4...Full wave rectifier, 5...Insulation resistance indicator, 6...Direction discrimination current generation switch, 7...Differential circuit, 8...Direction measurement switching switch, 9...Current transformer , 10... Direction discrimination indicator, 1
1...Circuit under test, 12...Directional live wire megger,
13...Measuring line, 14...Grounding point.
Claims (1)
平滑用コンデンサーからなる直流電源発生回路と
、該回路の出力を絶縁抵抗値として指示する指示
計等からなる指示回路とを具備し、該直流電源発
生回路の一端に測定線を接続する端子を、さらに
該指示回路の一端に接地端子を有する方向性活線
メガーにおいて、上記直流電源発生回路内にパル
ス状の電圧を発生させる微分回路と、被測定回路
内に接続され、上記パルス状の電圧から誘導され
る漏洩磁束を検出する変流器と、該変流器から発
生する電流の流れ方向を検出する検出器とからな
ることを特徴とする方向性活線メガー。 Measurement switches, isolation transformers, full wave rectifiers,
It is equipped with a DC power generation circuit consisting of a smoothing capacitor, and an indicator circuit consisting of an indicator etc. that indicates the output of the circuit as an insulation resistance value, and a terminal for connecting a measurement line to one end of the DC power generation circuit. Furthermore, in the directional live wire megger having a ground terminal at one end of the indicating circuit, a differentiating circuit that generates a pulsed voltage in the DC power generation circuit, and a differential circuit that is connected to the circuit under test and that generates a pulsed voltage from the pulsed voltage. A directional live wire megger comprising: a current transformer that detects induced leakage magnetic flux; and a detector that detects the flow direction of the current generated from the current transformer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2306888U JPH01128180U (en) | 1988-02-25 | 1988-02-25 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2306888U JPH01128180U (en) | 1988-02-25 | 1988-02-25 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01128180U true JPH01128180U (en) | 1989-09-01 |
Family
ID=31241751
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2306888U Pending JPH01128180U (en) | 1988-02-25 | 1988-02-25 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01128180U (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5124816A (en) * | 1974-08-23 | 1976-02-28 | Fujikura Ltd | Tsushinsenrono senrakutenkenshutsuho |
| JPS5866071A (en) * | 1981-10-15 | 1983-04-20 | Sumitomo Electric Ind Ltd | Detection of defective point for cable insulation under hot line |
| JPS6312775B2 (en) * | 1980-03-04 | 1988-03-22 | Hitachi Cable |
-
1988
- 1988-02-25 JP JP2306888U patent/JPH01128180U/ja active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5124816A (en) * | 1974-08-23 | 1976-02-28 | Fujikura Ltd | Tsushinsenrono senrakutenkenshutsuho |
| JPS6312775B2 (en) * | 1980-03-04 | 1988-03-22 | Hitachi Cable | |
| JPS5866071A (en) * | 1981-10-15 | 1983-04-20 | Sumitomo Electric Ind Ltd | Detection of defective point for cable insulation under hot line |
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