JPS55140163A - Non-contact voltage measurement device - Google Patents

Non-contact voltage measurement device

Info

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
Application number
JP4764079A
Other languages
Japanese (ja)
Inventor
Katamasa Harumoto
Hiroshi Yamamoto
Kotaro Hayashi
Yoshiaki Ida
Osayoshi Imamura
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Kansai Electric Power Co Inc
Mitsubishi Electric Corp
Original Assignee
Kansai Electric Power Co Inc
Mitsubishi Electric Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Kansai Electric Power Co Inc, Mitsubishi Electric Corp filed Critical Kansai Electric Power Co Inc
Priority to JP4764079A priority Critical patent/JPS55140163A/en
Publication of JPS55140163A publication Critical patent/JPS55140163A/en
Pending legal-status Critical Current

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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
JP4764079A 1979-04-18 1979-04-18 Non-contact voltage measurement device Pending JPS55140163A (en)

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)

* Cited by examiner, † Cited by third party
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

Cited By (7)

* Cited by examiner, † Cited by third party
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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