JPS55113967A - Method of inspecting improper point of corrosion-proof layer for cable - Google Patents
Method of inspecting improper point of corrosion-proof layer for cableInfo
- Publication number
- JPS55113967A JPS55113967A JP2101079A JP2101079A JPS55113967A JP S55113967 A JPS55113967 A JP S55113967A JP 2101079 A JP2101079 A JP 2101079A JP 2101079 A JP2101079 A JP 2101079A JP S55113967 A JPS55113967 A JP S55113967A
- Authority
- JP
- Japan
- Prior art keywords
- cable
- water
- corrosion
- proof layer
- improper point
- 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 Relating To Insulation (AREA)
Abstract
PURPOSE: To readily detect the improper point of the corrosion-proof layer for a cable laid in a tunnel or the like by detecting a leakage current of the cable by sprinkling water on the cable having the corrosion-proof layer.
CONSTITUTION: A detector which consists of a DC power supply 6, a DC ammeter 7 connected between a cable shiedling layer 3 and ground 5, water 8, water sprinkling brush 9, water supply tube such as rubber hose 10 or the like, and measuring lead wire 11 connected at one end to the brush 9 and at the other to an earth 5, is moved slowly over the surface of the corrosion-proof layer 4 of a cable to be measured. Then, water 8 is flown to enclose the entire periphery of the cable to exactly ground the portion to the earth. Thus, even if an improper point is located at any portion on the circumferential portion of the cable, water becomes a passage of the leaked current to absorb the current into the lead wire 11. It is adapted to fill surfactant in the water 8.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2101079A JPS55113967A (en) | 1979-02-23 | 1979-02-23 | Method of inspecting improper point of corrosion-proof layer for cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2101079A JPS55113967A (en) | 1979-02-23 | 1979-02-23 | Method of inspecting improper point of corrosion-proof layer for cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS55113967A true JPS55113967A (en) | 1980-09-02 |
Family
ID=12043086
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2101079A Pending JPS55113967A (en) | 1979-02-23 | 1979-02-23 | Method of inspecting improper point of corrosion-proof layer for cable |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS55113967A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20210044613A (en) * | 2019-10-15 | 2021-04-23 | 한국전력공사 | Leakage current measurement device |
-
1979
- 1979-02-23 JP JP2101079A patent/JPS55113967A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20210044613A (en) * | 2019-10-15 | 2021-04-23 | 한국전력공사 | Leakage current measurement device |
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