JPS5485393A - Gas bushing - Google Patents

Gas bushing

Info

Publication number
JPS5485393A
JPS5485393A JP15239577A JP15239577A JPS5485393A JP S5485393 A JPS5485393 A JP S5485393A JP 15239577 A JP15239577 A JP 15239577A JP 15239577 A JP15239577 A JP 15239577A JP S5485393 A JPS5485393 A JP S5485393A
Authority
JP
Japan
Prior art keywords
dielectric
cylinder
tube
procelain
butt
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
JP15239577A
Other languages
Japanese (ja)
Inventor
Toshio Ishikawa
Atsushi Ozawa
Yuzuru Kamata
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP15239577A priority Critical patent/JPS5485393A/en
Publication of JPS5485393A publication Critical patent/JPS5485393A/en
Pending legal-status Critical Current

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  • Insulators (AREA)

Abstract

PURPOSE:To raise the outside dielectric strength of a gas bushing, by making a dielectric cylinder of a dielectric substance having a higher dielectric constant that a procelain tube to greatly attenuate the air creepage electric field at the side of the butt of the procelain tube. CONSTITUTION:The dielectric cylinder 11 is provided between a cylindrical shield 8 and the porcelain tube 1 almost concentrically with a central conductor 2 so that the dielcetric cylinder 11 extends upward above the cylindrical shield 8. The dielectric cylinder 11 is made of a dielectric substance with a dielectric constant epsilond higher than that epsilong of the porcelain tube 1. If the dielectric constant epsilong of the procelain tube 1 is 5 and the dielectric constant epsilond of the dielectric cylinder 11 is 15, the equipotential lines of 5% in division tend to be displaced upward at the place of the dielectric cylinder 11. The distance between the equipotential lines is increased on the air creeping surface at the side of the butt of the porcelain tube 1. An annular air shield 9 of ground potential is provided around the butt of the porcelain tube 1.
JP15239577A 1977-12-20 1977-12-20 Gas bushing Pending JPS5485393A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15239577A JPS5485393A (en) 1977-12-20 1977-12-20 Gas bushing

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15239577A JPS5485393A (en) 1977-12-20 1977-12-20 Gas bushing

Publications (1)

Publication Number Publication Date
JPS5485393A true JPS5485393A (en) 1979-07-06

Family

ID=15539570

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15239577A Pending JPS5485393A (en) 1977-12-20 1977-12-20 Gas bushing

Country Status (1)

Country Link
JP (1) JPS5485393A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57147514U (en) * 1981-03-12 1982-09-16
US4528421A (en) * 1982-11-17 1985-07-09 Mitsubishi Denki Kabushiki Kaisha Porcelain gas-filled bushing with electrodes for moderating the electric field
JPH05168136A (en) * 1991-05-29 1993-07-02 Alcatel Nv Device for protecting tip part of electric cable from action of dielectric breakdown

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57147514U (en) * 1981-03-12 1982-09-16
US4528421A (en) * 1982-11-17 1985-07-09 Mitsubishi Denki Kabushiki Kaisha Porcelain gas-filled bushing with electrodes for moderating the electric field
JPH05168136A (en) * 1991-05-29 1993-07-02 Alcatel Nv Device for protecting tip part of electric cable from action of dielectric breakdown

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