JPS55125458A - Insulation resistance measuring device - Google Patents
Insulation resistance measuring deviceInfo
- Publication number
- JPS55125458A JPS55125458A JP3295879A JP3295879A JPS55125458A JP S55125458 A JPS55125458 A JP S55125458A JP 3295879 A JP3295879 A JP 3295879A JP 3295879 A JP3295879 A JP 3295879A JP S55125458 A JPS55125458 A JP S55125458A
- Authority
- JP
- Japan
- Prior art keywords
- switch
- insulation resistance
- detector
- measured
- output
- 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
Abstract
PURPOSE: To monitor the insulation state of respective distribution lines besides the insulation state of the whole system by providing a switch that changes the output of leakage current detectors installed on the respective distribution lines to the output of feedback current detector of the system.
CONSTITUTION: The leakage current detector 11 consists of zero-phase current transformer 12, which is placed so that it surrounds the distribution lines, and the amplifier 13 that amplifies the output of said current transformer 12. The switch 14 changes both outputs of the detector 10, which detects a system feedback current, and the detector 11, and feeds its signal to the operation part of the measuring unit 4. When the switch 14 is in the state C shown in Figure, the insulation resistance of the whole system can be measured. When the switch is turned to the position 1, the ground insulation resistance of the feeder that leads to the load 2 can be measured. Similarly when the switch 14 is turned to the position n, the insulation resistance of the feeder that leads to the load n+1 can be measured.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3295879A JPS55125458A (en) | 1979-03-20 | 1979-03-20 | Insulation resistance measuring device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3295879A JPS55125458A (en) | 1979-03-20 | 1979-03-20 | Insulation resistance measuring device |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS55125458A true JPS55125458A (en) | 1980-09-27 |
Family
ID=12373426
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP3295879A Pending JPS55125458A (en) | 1979-03-20 | 1979-03-20 | Insulation resistance measuring device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS55125458A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5816874A (en) * | 1981-07-24 | 1983-01-31 | Ricoh Co Ltd | Semi-automatic paper insertion device |
JPS59202077A (en) * | 1983-04-30 | 1984-11-15 | Hitachi Cable Ltd | Diagnosis of insulation deterioration of power cable |
JPH01313768A (en) * | 1988-06-13 | 1989-12-19 | Toyo Commun Equip Co Ltd | Measuring method for insulation resistance of load equipment or the like |
-
1979
- 1979-03-20 JP JP3295879A patent/JPS55125458A/en active Pending
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5816874A (en) * | 1981-07-24 | 1983-01-31 | Ricoh Co Ltd | Semi-automatic paper insertion device |
JPH0419034B2 (en) * | 1981-07-24 | 1992-03-30 | Ricoh Kk | |
JPS59202077A (en) * | 1983-04-30 | 1984-11-15 | Hitachi Cable Ltd | Diagnosis of insulation deterioration of power cable |
JPH0429982B2 (en) * | 1983-04-30 | 1992-05-20 | ||
JPH01313768A (en) * | 1988-06-13 | 1989-12-19 | Toyo Commun Equip Co Ltd | Measuring method for insulation resistance of load equipment or the like |
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