JPS5488157A - Apparatus of obtaining position of portions where certain physical quantity on lines has changed and obtaining said quantity - Google Patents
Apparatus of obtaining position of portions where certain physical quantity on lines has changed and obtaining said quantityInfo
- Publication number
- JPS5488157A JPS5488157A JP15705777A JP15705777A JPS5488157A JP S5488157 A JPS5488157 A JP S5488157A JP 15705777 A JP15705777 A JP 15705777A JP 15705777 A JP15705777 A JP 15705777A JP S5488157 A JPS5488157 A JP S5488157A
- Authority
- JP
- Japan
- Prior art keywords
- conductor
- thru
- obtaining
- magnitude
- changed
- 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
- Transmission And Conversion Of Sensor Element Output (AREA)
Abstract
PURPOSE: To obtain the insulation deterioration position and magnitude of the insulator inserted between first and second conductors by the cnstitution comprising connecting both ends of the first conductor to a reference voltage source and connecting a variable power source and ammeter between one end thereof and one end of the second conductor.
CONSTITUTION: An insulator which deteriorates in its insulation resistance owing to temperature rise is inserted between a central conductor 1 thru 2 and a sheath conductor 1' thru 2' to constitute a coaxial cable Cb. Now it is considered that the central conductor 1 thru 2 be a series connection of five equal resistances (r) and that conductances G be connected between the points of connection of the resistances (r) and the sheath conductor 1' thru 2', then the voltage of a variable power source E is changed from O volts up to a reference voltage Es and the current I flowing in an ammeter A is measured. From the turning point (zero cross point) of this voltage-current characteristic curve, the position of the insulation deterioration and the magnitude of the insulation deterioration (magnitude of the conductance G) may be known.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15705777A JPS5488157A (en) | 1977-12-26 | 1977-12-26 | Apparatus of obtaining position of portions where certain physical quantity on lines has changed and obtaining said quantity |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15705777A JPS5488157A (en) | 1977-12-26 | 1977-12-26 | Apparatus of obtaining position of portions where certain physical quantity on lines has changed and obtaining said quantity |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5488157A true JPS5488157A (en) | 1979-07-13 |
Family
ID=15641258
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15705777A Pending JPS5488157A (en) | 1977-12-26 | 1977-12-26 | Apparatus of obtaining position of portions where certain physical quantity on lines has changed and obtaining said quantity |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5488157A (en) |
-
1977
- 1977-12-26 JP JP15705777A patent/JPS5488157A/en active Pending
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