GB2011184A - Earthing switch for high voltage metal-clad switchgear - Google Patents

Earthing switch for high voltage metal-clad switchgear

Info

Publication number
GB2011184A
GB2011184A GB7850196A GB7850196A GB2011184A GB 2011184 A GB2011184 A GB 2011184A GB 7850196 A GB7850196 A GB 7850196A GB 7850196 A GB7850196 A GB 7850196A GB 2011184 A GB2011184 A GB 2011184A
Authority
GB
United Kingdom
Prior art keywords
piston
cylinder
earthing switch
piston rod
wall
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
GB7850196A
Other versions
GB2011184B (en
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.)
Rolls Royce Power Engineering PLC
Original Assignee
Northern Engineering Industries PLC
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 Northern Engineering Industries PLC filed Critical Northern Engineering Industries PLC
Priority to GB7850196A priority Critical patent/GB2011184B/en
Publication of GB2011184A publication Critical patent/GB2011184A/en
Application granted granted Critical
Publication of GB2011184B publication Critical patent/GB2011184B/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
    • H01H33/26—Means for detecting the presence of an arc or other discharge
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
    • H02B13/00—Arrangement of switchgear in which switches are enclosed in, or structurally associated with, a casing, e.g. cubicle
    • H02B13/02—Arrangement of switchgear in which switches are enclosed in, or structurally associated with, a casing, e.g. cubicle with metal casing
    • H02B13/035—Gas-insulated switchgear
    • H02B13/065—Means for detecting or reacting to mechanical or electrical defects
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
    • H02B13/00—Arrangement of switchgear in which switches are enclosed in, or structurally associated with, a casing, e.g. cubicle
    • H02B13/02—Arrangement of switchgear in which switches are enclosed in, or structurally associated with, a casing, e.g. cubicle with metal casing
    • H02B13/035—Gas-insulated switchgear
    • H02B13/075—Earthing arrangements
    • 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
    • H01H33/28—Power arrangements internal to the switch for operating the driving mechanism
    • H01H33/30—Power arrangements internal to the switch for operating the driving mechanism using fluid actuator
    • H01H33/302—Power arrangements internal to the switch for operating the driving mechanism using fluid actuator for fluid insulated switchgear, wherein the insulating fluid is also the working fluid
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
    • H02B13/00—Arrangement of switchgear in which switches are enclosed in, or structurally associated with, a casing, e.g. cubicle
    • H02B13/02—Arrangement of switchgear in which switches are enclosed in, or structurally associated with, a casing, e.g. cubicle with metal casing
    • H02B13/035—Gas-insulated switchgear
    • H02B13/065—Means for detecting or reacting to mechanical or electrical defects
    • H02B13/0655—Means for detecting or reacting to mechanical or electrical defects through monitoring changes of gas properties

Abstract

A fluid-filled metal-clad switchgear has an automatically-operating earthing switch for short- circuiting an internal arc in the earthed metal enclosure 11. The earthing switch comprises a piston 18 movable in a cylinder 17 mounted on the enclosure wall, with the piston rod 19 projecting through a close fitting hole 16a in the wall into the interior space 12, filled with insulating medium. A pipe 24 connects space 12 to the cylinder 17 on the outer side of the piston, so that on occurrence of an internal arc in the vessel 11 the rapid pressure rise creates a pressure differential across the piston to drive it and the piston rod 19 inwardly and cause the piston rod to engage the high-voltage conductor 10 and short-circuit it to the earthed vessel 11 via contacts 29 and 21. The switch is normally held open either by a restraining spring 20 or by breakable pegs fitted into the internal wall of the cylinder 17. A visual indicator 25, 26, 27 is provided. <IMAGE>
GB7850196A 1977-10-04 1978-12-29 Earthing switch for high voltage metal-clad switchgear Expired GB2011184B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB7850196A GB2011184B (en) 1977-10-04 1978-12-29 Earthing switch for high voltage metal-clad switchgear

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB4122977 1977-10-04
GB7850196A GB2011184B (en) 1977-10-04 1978-12-29 Earthing switch for high voltage metal-clad switchgear

Publications (2)

Publication Number Publication Date
GB2011184A true GB2011184A (en) 1979-07-04
GB2011184B GB2011184B (en) 1982-02-10

Family

ID=26264624

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7850196A Expired GB2011184B (en) 1977-10-04 1978-12-29 Earthing switch for high voltage metal-clad switchgear

Country Status (1)

Country Link
GB (1) GB2011184B (en)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3224938A1 (en) * 1982-07-03 1984-01-05 Brown, Boveri & Cie Ag, 6800 Mannheim Earthing device for medium-voltage or high-voltage switching and distribution installations which are encapsulated with insulating material or metal and are clad with insulating material
DE3227339A1 (en) * 1982-07-22 1984-02-02 BBC Aktiengesellschaft Brown, Boveri & Cie., 5401 Baden, Aargau Fast-drive device for a high-speed earthing switch
DE3623633A1 (en) * 1985-08-09 1987-02-26 Licentia Gmbh Device for the protection of the components of gas-insulated switching installations (switchgear) against the consequences of internal arcs
FR2590734A1 (en) * 1985-11-28 1987-05-29 Licentia Gmbh Rapid earthing switch for gas insulated switch
DE3605388A1 (en) * 1985-12-03 1987-08-27 Teves Gmbh Alfred Electrohydraulic switching device
DE3610223C1 (en) * 1986-03-26 1987-09-17 Licentia Gmbh Emergency rapid-earthing device
FR2642913A1 (en) * 1989-02-07 1990-08-10 Alsthom Gec SAFETY DEVICE FOR AN ELECTRIC DIELECTRIC GAS APPLIANCE, IN PARTICULAR FOR CIRCUIT BREAKERS OR MEASURING REDUCERS
USD862834S1 (en) 2016-06-27 2019-10-15 Mondelez Europe Gmbh Cracker
USD879408S1 (en) 2016-06-06 2020-03-31 Mondelez Europe Gmbh Cracker
USD887666S1 (en) 2017-05-19 2020-06-23 Generale Biscuit Food bar

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3224938A1 (en) * 1982-07-03 1984-01-05 Brown, Boveri & Cie Ag, 6800 Mannheim Earthing device for medium-voltage or high-voltage switching and distribution installations which are encapsulated with insulating material or metal and are clad with insulating material
DE3227339A1 (en) * 1982-07-22 1984-02-02 BBC Aktiengesellschaft Brown, Boveri & Cie., 5401 Baden, Aargau Fast-drive device for a high-speed earthing switch
DE3623633A1 (en) * 1985-08-09 1987-02-26 Licentia Gmbh Device for the protection of the components of gas-insulated switching installations (switchgear) against the consequences of internal arcs
DE3542100C2 (en) * 1985-11-28 1987-12-23 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt, De
FR2590734A1 (en) * 1985-11-28 1987-05-29 Licentia Gmbh Rapid earthing switch for gas insulated switch
DE3542100A1 (en) * 1985-11-28 1987-06-04 Licentia Gmbh Quick-action earthing device for gas-insulated switching installations
DE3605388A1 (en) * 1985-12-03 1987-08-27 Teves Gmbh Alfred Electrohydraulic switching device
DE3610223C1 (en) * 1986-03-26 1987-09-17 Licentia Gmbh Emergency rapid-earthing device
FR2642913A1 (en) * 1989-02-07 1990-08-10 Alsthom Gec SAFETY DEVICE FOR AN ELECTRIC DIELECTRIC GAS APPLIANCE, IN PARTICULAR FOR CIRCUIT BREAKERS OR MEASURING REDUCERS
EP0382134A1 (en) * 1989-02-07 1990-08-16 Gec Alsthom Sa Security device for an electrical apparatus using a dielectric gas, particularly for circuit breakers or measurement reducers
US5089931A (en) * 1989-02-07 1992-02-18 Gec Alsthom Sa Safety device for electrical apparatus containing a dielectric gas, in particular circuit breakers or voltage-droppers for measurement purposes
USD879408S1 (en) 2016-06-06 2020-03-31 Mondelez Europe Gmbh Cracker
USD862834S1 (en) 2016-06-27 2019-10-15 Mondelez Europe Gmbh Cracker
USD887666S1 (en) 2017-05-19 2020-06-23 Generale Biscuit Food bar

Also Published As

Publication number Publication date
GB2011184B (en) 1982-02-10

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Legal Events

Date Code Title Description
746 Register noted 'licences of right' (sect. 46/1977)
PCNP Patent ceased through non-payment of renewal fee

Effective date: 19951229