JPS55140163A - Non-contact voltage measurement device - Google Patents
Non-contact voltage measurement deviceInfo
- Publication number
- JPS55140163A JPS55140163A JP4764079A JP4764079A JPS55140163A JP S55140163 A JPS55140163 A JP S55140163A JP 4764079 A JP4764079 A JP 4764079A JP 4764079 A JP4764079 A JP 4764079A JP S55140163 A JPS55140163 A JP S55140163A
- Authority
- JP
- Japan
- Prior art keywords
- conductor
- voltage
- phase
- electrode
- measured
- 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
- Measuring Instrument Details And Bridges, And Automatic Balancing Devices (AREA)
Abstract
PURPOSE: To remove the effects of potentials impressed on the object other than the conductor being measured and measure the voltage accurately without contact by surrounding the conductor and the electrode with a shielding pipe and thereby operating phase separation.
CONSTITUTION: In the case of operating non-contact potential measurement by electrostatic induction with an 8-phase batch type SF6 gas-insulated electric machine, the voltage division ratio of the electrostatic capacity between electrode 5 and conductor 2 and known impedance 12 are measured in advance. The voltage at this voltge-dividing point is amplified by high-input-impedance amplifier 13, and thereby the voltage of conductor 2 is displayed on meter 14. At this time, to avoid the influence of V-phase and W-phase, electrode 5 and conductor 2 are surrounded by shielding pipe 8 sufficiently longer than the gap between electrode 5 and conductor 2. When each voltage of the 8 phases is measured, shield pipe surrounding is performed for each phase. By this, it is possible to operate non-contact voltage measurement accurately.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4764079A JPS55140163A (en) | 1979-04-18 | 1979-04-18 | Non-contact voltage measurement device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4764079A JPS55140163A (en) | 1979-04-18 | 1979-04-18 | Non-contact voltage measurement device |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS55140163A true JPS55140163A (en) | 1980-11-01 |
Family
ID=12780830
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP4764079A Pending JPS55140163A (en) | 1979-04-18 | 1979-04-18 | Non-contact voltage measurement device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS55140163A (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58135968A (en) * | 1982-02-08 | 1983-08-12 | Mitsubishi Electric Corp | Gas-isolated bus device |
JPS62214363A (en) * | 1986-03-17 | 1987-09-21 | Ngk Insulators Ltd | Fitting structure for voltage sensor |
JPS62214361A (en) * | 1986-03-17 | 1987-09-21 | Ngk Insulators Ltd | Voltage sensor |
JPS62214365A (en) * | 1986-03-17 | 1987-09-21 | Ngk Insulators Ltd | Switch |
JPH01134264U (en) * | 1988-03-07 | 1989-09-13 | ||
RU2471198C1 (en) * | 2011-09-06 | 2012-12-27 | Открытое акционерное общество "Национальный институт авиационных технологий" | Method to detect contact difference of potentials and related device |
-
1979
- 1979-04-18 JP JP4764079A patent/JPS55140163A/en active Pending
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58135968A (en) * | 1982-02-08 | 1983-08-12 | Mitsubishi Electric Corp | Gas-isolated bus device |
JPH0353581B2 (en) * | 1982-02-08 | 1991-08-15 | Mitsubishi Electric Corp | |
JPS62214363A (en) * | 1986-03-17 | 1987-09-21 | Ngk Insulators Ltd | Fitting structure for voltage sensor |
JPS62214361A (en) * | 1986-03-17 | 1987-09-21 | Ngk Insulators Ltd | Voltage sensor |
JPS62214365A (en) * | 1986-03-17 | 1987-09-21 | Ngk Insulators Ltd | Switch |
JPH01134264U (en) * | 1988-03-07 | 1989-09-13 | ||
RU2471198C1 (en) * | 2011-09-06 | 2012-12-27 | Открытое акционерное общество "Национальный институт авиационных технологий" | Method to detect contact difference of potentials and related device |
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