JPS5666763A - Measuring device for insulation resistance - Google Patents
Measuring device for insulation resistanceInfo
- Publication number
- JPS5666763A JPS5666763A JP14246579A JP14246579A JPS5666763A JP S5666763 A JPS5666763 A JP S5666763A JP 14246579 A JP14246579 A JP 14246579A JP 14246579 A JP14246579 A JP 14246579A JP S5666763 A JPS5666763 A JP S5666763A
- Authority
- JP
- Japan
- Prior art keywords
- current
- output
- signal
- insulation resistance
- detection section
- 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.)
- Granted
Links
Landscapes
- Measurement Of Resistance Or Impedance (AREA)
Abstract
PURPOSE: To enable to measure the insulation resistance with high accuracy through automatic adjustment, by obtaining the correcting current, through the use of a signal of which phase is shifted from the measuring signal of an oscillator by 90° and the current in the current detecting section.
CONSTITUTION: To detect the current i flowing to the ground line EL with the output signal of a low frequency oscillator OSC which is inserted in the ground line EL, the current detection section including a resistor R0 is provided. Further, the signal phase-shifting PS the OSC output by 90° and the current of the detection section are taken for the product, and the value which is a multiple of DC component of the product and the signal obtained through the output of PS added to the variable attenuator VR are adjusted to be equal by VR. Further, the current component due to parasitic capacitance included in the current detection section is removed by adding ADD the output of VR to the output of the current detecting section to obtain a value proportional to the insulation resistance at the output OUT.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14246579A JPS5666763A (en) | 1979-11-01 | 1979-11-01 | Measuring device for insulation resistance |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14246579A JPS5666763A (en) | 1979-11-01 | 1979-11-01 | Measuring device for insulation resistance |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5666763A true JPS5666763A (en) | 1981-06-05 |
JPS6334986B2 JPS6334986B2 (en) | 1988-07-13 |
Family
ID=15315941
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP14246579A Granted JPS5666763A (en) | 1979-11-01 | 1979-11-01 | Measuring device for insulation resistance |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5666763A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58127173A (en) * | 1982-01-26 | 1983-07-28 | Toyo Commun Equip Co Ltd | Measurement of insulation resistance for electric line |
-
1979
- 1979-11-01 JP JP14246579A patent/JPS5666763A/en active Granted
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58127173A (en) * | 1982-01-26 | 1983-07-28 | Toyo Commun Equip Co Ltd | Measurement of insulation resistance for electric line |
JPH0346787B2 (en) * | 1982-01-26 | 1991-07-17 | Toyo Communication Equip |
Also Published As
Publication number | Publication date |
---|---|
JPS6334986B2 (en) | 1988-07-13 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JPS56126769A (en) | Impedance meter | |
JPS5666763A (en) | Measuring device for insulation resistance | |
JPS5590862A (en) | Device for measuring resistance | |
JPS5518927A (en) | Output amplitude stabilizing method for impedance measuring circuit | |
JPS56112662A (en) | Measuring apparatus for loss of capacity element | |
JPS5444735A (en) | Leak detector with leak indicator | |
JPS54118520A (en) | Device for measuring transformation ratio of transformer for dc measuring instrument | |
JPS5478165A (en) | Measuring method of eddy corrent type displacement | |
JPS531570A (en) | Measuring system | |
JPS5524686A (en) | Dc resistance measuring method | |
JPS5396445A (en) | Measuring device for ground resistance | |
JPS5349485A (en) | Apparatus for measuring temperature of rotor | |
JPS5663270A (en) | Insulation resistance measuring method | |
JPS55146058A (en) | Measuring unit of capacitance-resistance at high frequency | |
JPS56111471A (en) | Measuring device for resistance value of coil | |
JPS5510562A (en) | Measuring device for loss angle | |
JPS5313967A (en) | Measuring method for characteristic of vibration gauge | |
JPS55107945A (en) | Water content control device for batcher plant | |
JPS5515021A (en) | Insulating resistance measuring method and its unit | |
JPS5640731A (en) | Measuring unit of stylus pressure | |
JPS5531913A (en) | Moisture measuring circuit | |
JPS537279A (en) | Phase meter | |
JPS5712371A (en) | Measuring instrument for frequency difference | |
JPS55121109A (en) | Temperature correcting method as to hardness measurement and foreign-material sorting making use of eddy current | |
JPS55117924A (en) | Induction system level gauge |