GB1492037A - Electrical circuit interrupting devices - Google Patents

Electrical circuit interrupting devices

Info

Publication number
GB1492037A
GB1492037A GB3545374A GB3545374A GB1492037A GB 1492037 A GB1492037 A GB 1492037A GB 3545374 A GB3545374 A GB 3545374A GB 3545374 A GB3545374 A GB 3545374A GB 1492037 A GB1492037 A GB 1492037A
Authority
GB
United Kingdom
Prior art keywords
perfluoro
pressure
fluorocarbon
butane
molecule
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.)
Expired
Application number
GB3545374A
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.)
Associated Electrical Industries Ltd
Original Assignee
Associated Electrical 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 Associated Electrical Industries Ltd filed Critical Associated Electrical Industries Ltd
Priority to GB3545374A priority Critical patent/GB1492037A/en
Publication of GB1492037A publication Critical patent/GB1492037A/en
Expired 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
    • H01H33/04—Means for extinguishing or preventing arc between current-carrying parts
    • H01H33/22—Selection of fluids for arc-extinguishing
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B3/00—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties
    • H01B3/18—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances
    • H01B3/20—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances liquids, e.g. oils
    • H01B3/24—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances liquids, e.g. oils containing halogen in the molecules, e.g. halogenated oils

Landscapes

  • Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Organic Insulating Materials (AREA)

Abstract

1492037 Arc extinguishing ASSOCIATED ELECTRICAL INDUSTRIES Ltd 19 May 1975 [12 Aug 1974] 35453/74 Heading H1N An electric circuit breaker includes separable contacts which, during contact separation, are totally enclosed within a chamber containing an arc-extinguishing fluid under a pressure of from 2 to 100 p.s.i.g., the fluid consisting of one or more saturated aliphatic fully fluorinated fluorocarbons having from 3 to 8 carbon atoms in the molecule, including at least one such fluorocarbon which has at least 5 carbon atoms in the molecule. Examples of suitable gases are fully fluorinated paraffins such as perfluoropropane, perfluoro-octane, perfluoro-n-pentane, perfluoro-n-hexane, perfluoro-n-butane and perfluoro-iso-butane. Preferably the arc extinguishing gas has added to it a compatible fluorine compound which is liquid at the pressure in the circuit breaker, to increase the vapour pressure, such as sulphur hexafluoride which can be added in a liquid volume concentration of from one-tenth to one-third of the volume of the fluorocarbon or fluorocarbons.
GB3545374A 1975-05-19 1975-05-19 Electrical circuit interrupting devices Expired GB1492037A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3545374A GB1492037A (en) 1975-05-19 1975-05-19 Electrical circuit interrupting devices

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3545374A GB1492037A (en) 1975-05-19 1975-05-19 Electrical circuit interrupting devices

Publications (1)

Publication Number Publication Date
GB1492037A true GB1492037A (en) 1977-11-16

Family

ID=10377913

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3545374A Expired GB1492037A (en) 1975-05-19 1975-05-19 Electrical circuit interrupting devices

Country Status (1)

Country Link
GB (1) GB1492037A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4570043A (en) * 1982-07-02 1986-02-11 The Electricity Council Dielectric fluids and apparatus incorporating such fluids
WO2000017975A1 (en) * 1998-09-17 2000-03-30 Abb Trasmissione & Distribuzione Spa Gas-insulated switching device

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4570043A (en) * 1982-07-02 1986-02-11 The Electricity Council Dielectric fluids and apparatus incorporating such fluids
WO2000017975A1 (en) * 1998-09-17 2000-03-30 Abb Trasmissione & Distribuzione Spa Gas-insulated switching device
US6444937B1 (en) 1998-09-17 2002-09-03 Abb Trasmissione & Distribuzione Spa Gas-insulated switching device

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Legal Events

Date Code Title Description
PS Patent sealed
732 Registration of transactions, instruments or events in the register (sect. 32/1977)
PCNP Patent ceased through non-payment of renewal fee