GB1217053A - Improvements in and relating to gas blast circuit-breakers - Google Patents

Improvements in and relating to gas blast circuit-breakers

Info

Publication number
GB1217053A
GB1217053A GB06831/68A GB1683168A GB1217053A GB 1217053 A GB1217053 A GB 1217053A GB 06831/68 A GB06831/68 A GB 06831/68A GB 1683168 A GB1683168 A GB 1683168A GB 1217053 A GB1217053 A GB 1217053A
Authority
GB
United Kingdom
Prior art keywords
contact
contacts
valve
piston
gas
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
GB06831/68A
Inventor
Rintje Boersma
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.)
COQ NV
Original Assignee
COQ NV
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 COQ NV filed Critical COQ NV
Publication of GB1217053A publication Critical patent/GB1217053A/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
    • H01H33/70—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid
    • H01H33/80—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid flow of arc-extinguishing fluid from a pressure source being controlled by a valve
    • H01H33/82—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid flow of arc-extinguishing fluid from a pressure source being controlled by a valve the fluid being air or gas
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/12—Contacts characterised by the manner in which co-operating contacts engage
    • H01H1/14—Contacts characterised by the manner in which co-operating contacts engage by abutting
    • 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
    • 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
    • H01H33/70—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid
    • H01H33/7015—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid characterised by flow directing elements associated with contacts
    • H01H33/7038—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid characterised by flow directing elements associated with contacts characterised by a conducting tubular gas flow enhancing nozzle
    • 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
    • H01H33/70—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid
    • H01H33/80—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid flow of arc-extinguishing fluid from a pressure source being controlled by a valve
    • H01H33/82—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid flow of arc-extinguishing fluid from a pressure source being controlled by a valve the fluid being air or gas
    • H01H33/83—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid flow of arc-extinguishing fluid from a pressure source being controlled by a valve the fluid being air or gas wherein the contacts are opened by the flow of air or gas

Landscapes

  • Circuit Breakers (AREA)

Abstract

1,217,053. Gas blast switches. COQ N.V. 8 April, 1968 [14 April, 1967], No. 16831/68. Heading H1N. In a gas blast switch of the kind in which the contacts 21, 26, during opening, first move together until the rearmost one is arrested by a stop 30, both contacts are moved by compressed gas from the extinguishing chamber and the leading contact 21 is arranged to be moved back to reclose the contacts and a blast valve after a delay. The contact 26 carries a piston 27 movable in a cylinder 25 which can be supplied with compressed SF 6 gas from a chamber 33 or vented to an outer chamber 38 by a valve 44. The contact 21 is attached to a piston 23 slidable in a cylinder 22 which can similarly be supplied with compressed gas or vented by a valve 50 operated by a piston 55. To operate the switch a rod 58 is pulled to the right to change over valve 44; the piston 27 is thus driven upwards, contact 26 pushing contact 21 before it to separate the parts 31, 32 of a blast valve. Compressed gas thus enters the contact space below piston 23 driving contact 21 to its fully open position, contact 26 being arrested by the stop. After a delay necessary to fill pipe 57 valve 50 is changed over to admit compressed gas to the inside of piston 23 so that a spring 24 recloses the contacts and valve 31, 32. In a modification (Fig. 3, not shown) the supply to pipe 57 is obtained from the space below piston 23 allowing the rod 58 to be released earlier so that contact 26 returns to the position shown before contact 21 reaches its open position, thus causing a larger interrupting gap and preventing contact 21 striking contact 26 during reclosure and damaging the arc resistant surfaces 64, 65 which are of sintered tungsten alloy. The contacts 21, 26 do not meet in the closed position shown and connection is made through fixed contacts 29. The chamber 33 is mounted inside insulating tubes (2, 3, 4) in an earthed tank (1) the space between the tank and tubes being filled with insulating fluid (Fig. 1, not shown). The terminals 10, 11 of the switch are connected to conductors (14, 15) by contacts 5, 12, 6, 13. The blast gas passing through the nozzle contacts 21, 26 to low pressure chambers (34, 35) is recirculated through a filter (39) by a pump (40). The space 38 is preferably separated from the chambers (34, 35).
GB06831/68A 1967-04-14 1968-04-08 Improvements in and relating to gas blast circuit-breakers Expired GB1217053A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL6705277A NL126949C (en) 1967-04-14 1967-04-14

Publications (1)

Publication Number Publication Date
GB1217053A true GB1217053A (en) 1970-12-23

Family

ID=19799847

Family Applications (1)

Application Number Title Priority Date Filing Date
GB06831/68A Expired GB1217053A (en) 1967-04-14 1968-04-08 Improvements in and relating to gas blast circuit-breakers

Country Status (5)

Country Link
US (1) US3553406A (en)
DE (1) DE1665258B1 (en)
GB (1) GB1217053A (en)
NL (1) NL126949C (en)
SE (1) SE348595B (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3531457A1 (en) * 1985-09-03 1987-03-12 Windmoeller & Hoelscher DEVICE FOR PRODUCING BAGS
EP2985775A1 (en) * 2014-08-12 2016-02-17 GE Energy Power Conversion Technology Ltd Circuit Breakers

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB828589A (en) * 1957-05-23 1960-02-17 Asea Ab Air-blast electric circuit-breaker
FR1270584A (en) * 1960-07-18 1961-09-01 Merlin Gerin Improvements to pneumatic circuit breakers having at least one tubular contact
FR1394634A (en) * 1964-04-03 1965-04-02 Nv Improvements to pressurized gas circuit breakers
DE1238545B (en) * 1964-05-28 1967-04-13 Merlin Gerin Pressurized gas switch with at least one tubular contact

Also Published As

Publication number Publication date
SE348595B (en) 1972-09-04
DE1665258B1 (en) 1971-06-09
US3553406A (en) 1971-01-05
NL6705277A (en) 1968-10-15
NL126949C (en) 1967-04-14

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