JPS57135367A - Voltage detecting method for enclosed high voltage apparatus - Google Patents

Voltage detecting method for enclosed high voltage apparatus

Info

Publication number
JPS57135367A
JPS57135367A JP56020426A JP2042681A JPS57135367A JP S57135367 A JPS57135367 A JP S57135367A JP 56020426 A JP56020426 A JP 56020426A JP 2042681 A JP2042681 A JP 2042681A JP S57135367 A JPS57135367 A JP S57135367A
Authority
JP
Japan
Prior art keywords
voltage
electrode
variation
light
center
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
JP56020426A
Other languages
Japanese (ja)
Inventor
Tsutomu Mitsui
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.)
Sumitomo Electric Industries Ltd
Original Assignee
Sumitomo Electric Industries 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 Sumitomo Electric Industries Ltd filed Critical Sumitomo Electric Industries Ltd
Priority to JP56020426A priority Critical patent/JPS57135367A/en
Publication of JPS57135367A publication Critical patent/JPS57135367A/en
Pending 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
    • 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

Abstract

PURPOSE:To fetch variation of a voltage as variation of the transmission quantity of light, by using a photoelectric converting element such as Bi12SiO20 being, a voltage-optical sensor, when detecting the voltage of an enclosed cable such as a conduit line gaseous cable, etc. or an apparatus. CONSTITUTION:On a bus part case 3 of an enclosed apparatus, a coupling electrode plate 4 opposed to a center electric conductor 1 is provided. Also, voltage induced to this electrode plate 4 is divided by a voltage divider 5. Output voltage of this voltage divider 5 is supplied to a sensor 6 and is fetched as a variation of the quantity of light by a photoelectric converting element 8. Said voltage divider 5 is formed by a primary electrode for high voltage 20, a secondary electrode for low voltage 21, and a tertiary electrode for voltage division 22, and these electrodes 20-22 are plate-like electrodes and are placed in parallel with each other. Also, to the secondary electrode 21, a hollow metallic pipe is connected, and a metallic rod insulated from the hollow pipe is made to pass through this center. When said primary electrode 20 and secondary electrode 21 are connected to the electrode 4 and the case 3, respectively and voltage of the hollow pipe and the center rod is applied to the sensor 6, voltage is detected as a variation of light by the element 8 and is measured.
JP56020426A 1981-02-14 1981-02-14 Voltage detecting method for enclosed high voltage apparatus Pending JPS57135367A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56020426A JPS57135367A (en) 1981-02-14 1981-02-14 Voltage detecting method for enclosed high voltage apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56020426A JPS57135367A (en) 1981-02-14 1981-02-14 Voltage detecting method for enclosed high voltage apparatus

Publications (1)

Publication Number Publication Date
JPS57135367A true JPS57135367A (en) 1982-08-20

Family

ID=12026704

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56020426A Pending JPS57135367A (en) 1981-02-14 1981-02-14 Voltage detecting method for enclosed high voltage apparatus

Country Status (1)

Country Link
JP (1) JPS57135367A (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4944911A (en) * 1972-09-06 1974-04-27
JPS5049623A (en) * 1973-08-10 1975-05-02

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4944911A (en) * 1972-09-06 1974-04-27
JPS5049623A (en) * 1973-08-10 1975-05-02

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