JPH0310270U - - Google Patents
Info
- Publication number
- JPH0310270U JPH0310270U JP7212389U JP7212389U JPH0310270U JP H0310270 U JPH0310270 U JP H0310270U JP 7212389 U JP7212389 U JP 7212389U JP 7212389 U JP7212389 U JP 7212389U JP H0310270 U JPH0310270 U JP H0310270U
- Authority
- JP
- Japan
- Prior art keywords
- ground fault
- voltage side
- fault detection
- low voltage
- grounding 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
- 238000001514 detection method Methods 0.000 claims description 10
- 238000010586 diagram Methods 0.000 description 1
- 230000005674 electromagnetic induction Effects 0.000 description 1
Landscapes
- Locating Faults (AREA)
Description
第１図は、本考案の一実施例に係る漏電箇所探
査装置の構成図である。
１０……電源変圧器、１２……負荷装置、１４
……低圧側接地線、１６……地絡検出電流供給装
置、２２……電磁誘導コイル、２６……地絡抵抗
、２８……磁界探査ユニツト。
FIG. 1 is a configuration diagram of an earth leakage location detection device according to an embodiment of the present invention. 10...Power transformer, 12...Load device, 14
...Low voltage side grounding wire, 16...Ground fault detection current supply device, 22...Electromagnetic induction coil, 26...Ground fault resistance, 28...Magnetic field exploration unit.
Claims (1)
の低圧側接地線に電源周波数と異なる周波数の電
流である地絡検出電流を供給する高周波電源であ
る地絡検出電流供給装置と、前記電源変圧器の低
圧側に接続された負荷装置の周囲を探索して、前
記地絡検出電流が負荷装置の漏電箇所において地
絡することにより発生する磁界である地絡検出磁
界を検出し、負荷装置の漏電箇所を探査する磁界
センサである磁界探査ユニツトと、を有する漏電
箇所探査装置において、 前記地絡検出電流供給装置は、前記低圧側接地
線に直列に接続されてこの低圧側接地線からの電
源周波数電流の侵入を阻止する直列共振回路を含
み、 前記低圧側接地線に地絡検出電流を前記直列共
振回路を介して供給することを特徴とする漏電箇
所探査装置。[Claim for Utility Model Registration] Ground fault detection is a high frequency power supply that is connected in parallel to the low voltage side grounding wire of a power transformer and supplies a ground fault detection current, which is a current with a frequency different from the power supply frequency, to this low voltage side grounding wire. Ground fault detection is a magnetic field generated when the ground fault detection current causes a ground fault at a leakage point of the load device by searching around the current supply device and the load device connected to the low voltage side of the power transformer. A ground fault detection current supply device is connected in series to the low-voltage side grounding wire, and a magnetic field detection unit is a magnetic field sensor that detects a magnetic field and searches for a ground leakage point in a load device. An earth leakage location detection device comprising a series resonant circuit that prevents power frequency current from entering from the low voltage side grounding wire, and supplying a ground fault detection current to the low voltage side grounding wire via the series resonant circuit. .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7212389U JPH0310270U (en) | 1989-06-19 | 1989-06-19 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7212389U JPH0310270U (en) | 1989-06-19 | 1989-06-19 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0310270U true JPH0310270U (en) | 1991-01-31 |
Family
ID=31609779
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7212389U Pending JPH0310270U (en) | 1989-06-19 | 1989-06-19 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0310270U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2020122716A (en) * | 2019-01-31 | 2020-08-13 | 株式会社関電工 | Insulation monitoring device and method |
-
1989
- 1989-06-19 JP JP7212389U patent/JPH0310270U/ja active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2020122716A (en) * | 2019-01-31 | 2020-08-13 | 株式会社関電工 | Insulation monitoring device and method |
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