GB1336734A - Electric circuit breakers - Google Patents

Electric circuit breakers

Info

Publication number
GB1336734A
GB1336734A GB5650770A GB5650770A GB1336734A GB 1336734 A GB1336734 A GB 1336734A GB 5650770 A GB5650770 A GB 5650770A GB 5650770 A GB5650770 A GB 5650770A GB 1336734 A GB1336734 A GB 1336734A
Authority
GB
United Kingdom
Prior art keywords
nozzle
passages
overhang
magrini
nov
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
GB5650770A
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.)
Magrini Fabbriche Riunite Magrini Scarpa e Magnano MSM SpA
Original Assignee
Magrini Fabbriche Riunite Magrini Scarpa e Magnano MSM SpA
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 Magrini Fabbriche Riunite Magrini Scarpa e Magnano MSM SpA filed Critical Magrini Fabbriche Riunite Magrini Scarpa e Magnano MSM SpA
Publication of GB1336734A publication Critical patent/GB1336734A/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
    • H01H33/7015—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid characterised by flow directing elements associated with contacts
    • H01H33/7023—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid characterised by flow directing elements associated with contacts characterised by an insulating tubular gas flow enhancing nozzle
    • H01H33/703—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid characterised by flow directing elements associated with contacts characterised by an insulating tubular gas flow enhancing nozzle having special gas flow directing elements, e.g. grooves, extensions

Landscapes

  • Circuit Breakers (AREA)

Abstract

1336734 Gas blast switches MAGRINI FABBRICHE RIUNITE MAGRINI SCARPA E MAGNANO MSM SpA 27 Nov 1970 [27 Nov 1969] 56507/70 Heading H1N An insulating blast nozzle surrounding, and movable with, the moving contact 3 of a compressed gas circuit-breaker has, internally, a convergent portion 1, a cylindrical portion 5 and a divergent portion 9, a plurality of tapered passages 6 extending from the cylindrical portion through the wall of the nozzle to reduce the pressure within the nozzle and the outside of the nozzle being formed (19) to overhang the outlets of the passage so as to deflect gases leaving by the passages in the direction of the main gas flow 7; the passages 6 extend at an acute angle, preferably between 45 and 65 degrees, to the main gas flow 7. The overhang 19 may be extended to the tip of the nozzle to form an annular passage or the individual passages may be extended to the tip. When the gases strike the overhang 19 they urge the nozzle to the right to assist the opening operation. The inside of portion 9 is formed with a plurality of annular corrugations.
GB5650770A 1969-11-27 1970-11-27 Electric circuit breakers Expired GB1336734A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT2497369 1969-11-27
CH515771 1971-04-08

Publications (1)

Publication Number Publication Date
GB1336734A true GB1336734A (en) 1973-11-07

Family

ID=25697107

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5650770A Expired GB1336734A (en) 1969-11-27 1970-11-27 Electric circuit breakers

Country Status (6)

Country Link
US (1) US3668352A (en)
BE (1) BE764619Q (en)
CH (1) CH537092A (en)
DE (1) DE2057686A1 (en)
FR (1) FR2072457A5 (en)
GB (1) GB1336734A (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH556603A (en) * 1973-03-20 1974-11-29 Bbc Brown Boveri & Cie IN A SWITCHING CHAMBER OF AN ELECTRIC SWITCH, IN PARTICULAR A SF6 COMPRESSED GAS SWITCH, A COMPONENT MADE OF A MATERIAL EMITING GAS UNDER THE EFFECT OF ARC HEAT.
IT985690B (en) * 1973-06-14 1974-12-10 Magrini Fab Riun Scarpa INTERRUPTION CHAMBER FOR SELF-BLOWERING ELECTRIC COMPRESSED GAS SWITCHES
CA1243342A (en) * 1983-08-24 1988-10-18 Fumihiro Endo Gas-insulated circuit breaker
JP2771305B2 (en) * 1990-03-13 1998-07-02 株式会社日立製作所 Gas circuit breaker
JPH0495322A (en) * 1990-08-03 1992-03-27 Hitachi Ltd Gas blast circuit breaker
FR2692400B1 (en) * 1992-06-10 1997-06-27 Alsthom Gec MULTIPLE DIVERGENT BLOWING NOZZLE.
FR2692401B1 (en) * 1992-06-10 1994-08-19 Gec Alsthom T & D Sa Breaker nozzle with several diverging points.
FR3030106B1 (en) * 2014-12-11 2017-01-13 Alstom Technology Ltd HIGH VOLTAGE ELECTRICAL OFFSETTING DEVICE WITH OPTIMIZED AUTOSOUFFLAGE

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE388499A (en) * 1931-05-21
US3291948A (en) * 1964-08-06 1966-12-13 Westinghouse Electric Corp Orifice structure for compressed gas-circuit interrupter
DE1254218B (en) * 1965-11-10 1967-11-16 Licentia Gmbh Gas pressure switch
US3551625A (en) * 1966-09-01 1970-12-29 Westinghouse Electric Corp Circuit breakers
FR1549097A (en) * 1967-01-03 1968-12-06

Also Published As

Publication number Publication date
BE764619Q (en) 1971-08-16
DE2057686A1 (en) 1971-06-03
CH537092A (en) 1973-06-29
US3668352A (en) 1972-06-06
FR2072457A5 (en) 1971-09-24

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee