JPS57206843A - Vacuum degree monitor for vacuum electrical appliance - Google Patents

Vacuum degree monitor for vacuum electrical appliance

Info

Publication number
JPS57206843A
JPS57206843A JP56091914A JP9191481A JPS57206843A JP S57206843 A JPS57206843 A JP S57206843A JP 56091914 A JP56091914 A JP 56091914A JP 9191481 A JP9191481 A JP 9191481A JP S57206843 A JPS57206843 A JP S57206843A
Authority
JP
Japan
Prior art keywords
vacuum
light
pockel
electric field
polarized
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
Application number
JP56091914A
Other languages
English (en)
Japanese (ja)
Other versions
JPH0248852B2 (enrdf_load_stackoverflow
Inventor
Tomio Yasuda
Toshiyuki Ichiyama
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.)
Meidensha Corp
Meidensha Electric Manufacturing Co Ltd
Original Assignee
Meidensha Corp
Meidensha Electric Manufacturing Co Ltd
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 Meidensha Corp, Meidensha Electric Manufacturing Co Ltd filed Critical Meidensha Corp
Priority to JP56091914A priority Critical patent/JPS57206843A/ja
Priority to EP82303031A priority patent/EP0067683B1/en
Priority to DE8282303031T priority patent/DE3272713D1/de
Priority to KR8202626A priority patent/KR860001475B1/ko
Priority to US06/388,477 priority patent/US4510441A/en
Publication of JPS57206843A publication Critical patent/JPS57206843A/ja
Publication of JPH0248852B2 publication Critical patent/JPH0248852B2/ja
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R15/00—Details of measuring arrangements of the types provided for in groups G01R17/00 - G01R29/00, G01R33/00 - G01R33/26 or G01R35/00
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
    • H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
    • H01H33/66—Vacuum switches
    • H01H33/668—Means for obtaining or monitoring the vacuum
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R15/00—Details of measuring arrangements of the types provided for in groups G01R17/00 - G01R29/00, G01R33/00 - G01R33/26 or G01R35/00
    • G01R15/14—Adaptations providing voltage or current isolation, e.g. for high-voltage or high-current networks
    • G01R15/24—Adaptations providing voltage or current isolation, e.g. for high-voltage or high-current networks using light-modulating devices
    • G01R15/241—Adaptations providing voltage or current isolation, e.g. for high-voltage or high-current networks using light-modulating devices using electro-optical modulators, e.g. electro-absorption
    • G01R15/242—Adaptations providing voltage or current isolation, e.g. for high-voltage or high-current networks using light-modulating devices using electro-optical modulators, e.g. electro-absorption based on the Pockels effect, i.e. linear electro-optic effect
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R29/00—Arrangements for measuring or indicating electric quantities not covered by groups G01R19/00 - G01R27/00
    • G01R29/08—Measuring electromagnetic field characteristics
    • G01R29/0864—Measuring electromagnetic field characteristics characterised by constructional or functional features
    • G01R29/0878—Sensors; antennas; probes; detectors
    • G01R29/0885—Sensors; antennas; probes; detectors using optical probes, e.g. electro-optical, luminescent, glow discharge, or optical interferometers
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R29/00—Arrangements for measuring or indicating electric quantities not covered by groups G01R19/00 - G01R27/00
    • G01R29/12—Measuring electrostatic fields or voltage-potential
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
    • H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
    • H01H33/66—Vacuum switches

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Measuring Fluid Pressure (AREA)
  • High-Tension Arc-Extinguishing Switches Without Spraying Means (AREA)
  • Measuring Instrument Details And Bridges, And Automatic Balancing Devices (AREA)
JP56091914A 1981-06-12 1981-06-15 Vacuum degree monitor for vacuum electrical appliance Granted JPS57206843A (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
JP56091914A JPS57206843A (en) 1981-06-15 1981-06-15 Vacuum degree monitor for vacuum electrical appliance
EP82303031A EP0067683B1 (en) 1981-06-12 1982-06-11 Electric field detector
DE8282303031T DE3272713D1 (en) 1981-06-12 1982-06-11 Electric field detector
KR8202626A KR860001475B1 (ko) 1981-06-15 1982-06-12 진공 전기기기의 진공도 감시장치
US06/388,477 US4510441A (en) 1981-06-12 1982-06-14 Electric field detector

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56091914A JPS57206843A (en) 1981-06-15 1981-06-15 Vacuum degree monitor for vacuum electrical appliance

Publications (2)

Publication Number Publication Date
JPS57206843A true JPS57206843A (en) 1982-12-18
JPH0248852B2 JPH0248852B2 (enrdf_load_stackoverflow) 1990-10-26

Family

ID=14039846

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56091914A Granted JPS57206843A (en) 1981-06-12 1981-06-15 Vacuum degree monitor for vacuum electrical appliance

Country Status (2)

Country Link
JP (1) JPS57206843A (enrdf_load_stackoverflow)
KR (1) KR860001475B1 (enrdf_load_stackoverflow)

Also Published As

Publication number Publication date
JPH0248852B2 (enrdf_load_stackoverflow) 1990-10-26
KR860001475B1 (ko) 1986-09-26
KR840000805A (ko) 1984-02-27

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