EP0322388A3 - A leak indicator - Google Patents

A leak indicator Download PDF

Info

Publication number
EP0322388A3
EP0322388A3 EP19880850426 EP88850426A EP0322388A3 EP 0322388 A3 EP0322388 A3 EP 0322388A3 EP 19880850426 EP19880850426 EP 19880850426 EP 88850426 A EP88850426 A EP 88850426A EP 0322388 A3 EP0322388 A3 EP 0322388A3
Authority
EP
European Patent Office
Prior art keywords
plant
indicator
bourdon tube
gas
terminals
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.)
Withdrawn
Application number
EP19880850426
Other languages
German (de)
French (fr)
Other versions
EP0322388A2 (en
Inventor
Jan Morten Eriksen
Jaap E. Daalder
Pietro Ciboldi
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.)
EB DISTRIBUSJON AS
Original Assignee
EB DISTRIBUSJON AS
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 EB DISTRIBUSJON AS filed Critical EB DISTRIBUSJON AS
Publication of EP0322388A2 publication Critical patent/EP0322388A2/en
Publication of EP0322388A3 publication Critical patent/EP0322388A3/en
Withdrawn legal-status Critical Current

Links

Classifications

    • 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
    • H01H33/02—Details
    • H01H33/53—Cases; Reservoirs, tanks, piping or valves, for arc-extinguishing fluid; Accessories therefor, e.g. safety arrangements, pressure relief devices
    • H01H33/56—Gas reservoirs
    • H01H33/563—Gas reservoirs comprising means for monitoring the density of the insulating gas

Landscapes

  • Measuring Fluid Pressure (AREA)

Abstract

A leak indicator for a gas filled electrical plant, with the leak indicator being of the Bourdon tube kind, the Bourdon tube being filled with a gas having the same properties as the gas surrounding the Bourdon tube, and being in a sealed state, the nominal gas pressure in the plant deviating from the ambient atmospheric pressure. The free end of the Bourdon tube is arranged to influence a switch means, preferably a multi-step switch having at least two terminals. The leak indicator may be supplied with voltage directly from the plant, irrespective of the direction of supply to the plant, as a first terminal of the switch means may be capacitively connected with a high voltage bushing in the plant, and a second terminal may be connected with a first clamp of a voltage indicator, the second clamp of said voltage indicator being connected to earth, and as there will be contact between said first and second terminals in case of a normal state of the plant, and as there will be no contact between said terminals in case of a deviation from the normal state.
EP19880850426 1987-12-22 1988-12-16 A leak indicator Withdrawn EP0322388A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NO87875392A NO875392L (en) 1987-12-22 1987-12-22 LEAK INDICATOR.
NO875392 1987-12-22

Publications (2)

Publication Number Publication Date
EP0322388A2 EP0322388A2 (en) 1989-06-28
EP0322388A3 true EP0322388A3 (en) 1990-10-17

Family

ID=19890494

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19880850426 Withdrawn EP0322388A3 (en) 1987-12-22 1988-12-16 A leak indicator

Country Status (5)

Country Link
EP (1) EP0322388A3 (en)
AU (1) AU610669B2 (en)
DK (1) DK711288A (en)
FI (1) FI885857A (en)
NO (1) NO875392L (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008013343A1 (en) * 2008-03-06 2009-09-10 Siemens Aktiengesellschaft High voltage system with a conductor and method for detecting a measured variable of a high voltage system
CN113758653A (en) * 2021-09-09 2021-12-07 河南平高电气股份有限公司 Method for monitoring SF6 density relay in real time and pre-judging air leakage

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2538314A1 (en) * 1975-08-28 1977-03-10 Bbc Brown Boveri & Cie Leakage monitor for gas insulated HV conductor - is fitted with orifice plate and differential pressure switch to detect pressure drop in affected section
DE2926260A1 (en) * 1979-06-29 1981-01-08 Bbc Brown Boveri & Cie Gas density monitor for gas filled HV switchgear - has bourdon tube enclosed in gas to operate indicator
DE8707812U1 (en) * 1987-06-02 1987-08-27 Alexander Wiegand Gmbh U. Co Armaturen- U. Manometerfabrik, 8763 Klingenberg, De

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2538314A1 (en) * 1975-08-28 1977-03-10 Bbc Brown Boveri & Cie Leakage monitor for gas insulated HV conductor - is fitted with orifice plate and differential pressure switch to detect pressure drop in affected section
DE2926260A1 (en) * 1979-06-29 1981-01-08 Bbc Brown Boveri & Cie Gas density monitor for gas filled HV switchgear - has bourdon tube enclosed in gas to operate indicator
DE8707812U1 (en) * 1987-06-02 1987-08-27 Alexander Wiegand Gmbh U. Co Armaturen- U. Manometerfabrik, 8763 Klingenberg, De

Also Published As

Publication number Publication date
DK711288D0 (en) 1988-12-21
AU610669B2 (en) 1991-05-23
FI885857A0 (en) 1988-12-19
DK711288A (en) 1989-06-23
NO875392D0 (en) 1987-12-22
NO875392L (en) 1989-06-23
FI885857A (en) 1989-06-23
EP0322388A2 (en) 1989-06-28
AU2686688A (en) 1989-06-22

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