US2747055A - High tension circuit breakers - Google Patents

High tension circuit breakers Download PDF

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Publication number
US2747055A
US2747055A US357942A US35794253A US2747055A US 2747055 A US2747055 A US 2747055A US 357942 A US357942 A US 357942A US 35794253 A US35794253 A US 35794253A US 2747055 A US2747055 A US 2747055A
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US
United States
Prior art keywords
containers
compressed air
air
container
piston
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 - Lifetime
Application number
US357942A
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English (en)
Inventor
Forwald Haakon
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.)
ABB Norden Holding AB
Original Assignee
ASEA AB
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 ASEA AB filed Critical ASEA AB
Application granted granted Critical
Publication of US2747055A publication Critical patent/US2747055A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • 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

Definitions

  • a further advantage is that it is not necessary to be concerned with any pressure drop for the extinguishing air which, on the contrary, must be taken into account if an air blast valve is inserted between the breaking gap and the air blast container. This is especially the case if the air blast valve is arranged at the base of the circuit breaker, because in that case a pressure drop is to be taken into account in a long pipe line from the blast valve to the breaking gap.
  • the present invention concerns a high tension circuit breaker of the above mentioned kind with a plurality of compressed air containers, containing breaking gaps and with or without equalization and extinguishing resistances, which containers are arranged on a plurality of separate pillar insulators.
  • the invention is chiefly characterized thereby that the delivery of the extinguishing air to the different air containers is performed to at least one of the containers and from this container to the other containers through pipe lines which connect them and which at the same time may serve as electrical connections between the breaking gaps in the containers.
  • the invention effects a considerable saving of insulating compressed air pipe lines by the arrangement wherein the compressed air is delivered from one container to the others. This saving is especially pronounced if the transmission of compressed air is performed through tubular electric connections between the breaking gaps. There is also a considerable saving in the delivery line to the containers, because the re-filling of the containers between the different extinguishing occasions can be performed during a comparatively long time so that the delivery line may have a small cross sectional area.
  • Fig. 1 shows a form of the invention.
  • Fig. 2 shows schematically one of the compressed air containers with insulating bushings, contacts and operating mechanism
  • Fig. 3 shows an operating mechanism in detail.
  • the numerals 1, 2 and 3 designate three pillar insulators which rest on base frames 4, 5 and 6 and carry compressed air containers 7, 8 and 9, to which are attached, on each, two insulating bushings 10, 11, 12, 13, and 14, re-
  • the delivery of compressed air spectively.
  • the breaking gaps in the different air containers are connected in series to each other by means of tubular connections 16 and 17 which also serve to transmit compressed air from the container 3 to the containers 7 and 9 respectively.
  • the current to the circuit breaker is delivered through the conductor 18 and is taken out from the breaker through the conductor 19.
  • Fig. 2 shows in detail a compressed air container 8 with its insulating bushings 12 and 13.
  • 16 and 17 are the tubular conductors to the stationary contacts 39 and it) or the breaking gap.
  • openings 41 and 42 through which air escapes from the container 8 to the other containers, whereas air is delivered to the container 8 through the pipe line B.
  • the pillar insulators 1, 2, and 3 are only schematically indicated. In reality they are built up from screen insulating elements 43 which are joined with each other by means of metal armatures 43:! as indicated in Fig. 2.
  • Fig. 3 shows the operating mechanism for a breaking gap.
  • 44 designates the wall of a compressed air container in which a mechanism housing 45 is inserted.
  • this housing there is an opening 46 in the upper part, through which the movable contact 47 of the circuit breaker projects into contact with the stationary contact 40 which is attached to one of the insulating bushings in the compressed air containers.
  • the movable contact 47 is connected with a piston 49 which moves in a cylinder 50 which is provided with a collar 51 with tightening gasket 52 which engages tightly against the edges of the annular formed outlet opening 53 in the lower part of the housing 45.
  • a piston 56 In the lower space of this housing there is a piston 56 which by means of the rod 57 is connected with the piston 49.
  • a pipe 59 projects up into the cylinder 50 and is there terminated by means of a collar 60 which on the upper side is provided with a tightening ring 61.
  • the piston 56 is provided with a non-return valve 62.
  • 63 is the delivery line for operating air to the mechanism. This line is branched in the first place to a case 64 containing a membrane, and in the second place through a channel 65 to the space in the housing 55 below the piston 54, and, in the third place, over a throttle and a non-return valve 66, 67 to the space in the housing 55 above the piston 54.
  • the space below the piston 56 is, by a channel 68, in communication with a three-way-valve 69.
  • the arrangement acts in the following way:
  • the piston 54- will then rest in its position because the air is evacuated from both sides thereof.
  • the valve disc 70 is moved to the right so that compressed air from the container through the line 71 and the line as is delivered to the space below the piston 56 so that it is moved upwards simultaneously closing the non-return valve 62.
  • the piston 56 moves upwards, the movable contact 47, by means of the rod 57, is brought into engagement with the stationary contact 40.
  • An air blast circuit breaker having a plurality of series-connected breaking gaps and comprising a plurality of compressed air containers arranged in spaced relation to each other, contacts for said gaps arranged within said containers, a pillar insulator supporting each individual,
  • each container having a volume so large that the com- 30 pressed air contained therein is suflicient for at least one extinguishing of the are between the breaking contacts therein, pipe lines extending directly between the spaced containers and providing for the passage of air from one of said containers to another, and at least one pipe line for the delivery of compressed air to said containers.
  • An air blast circuit breaker having a plurality of series-connected breaker gaps and comprising contacts for said breaker gaps, a plurality of compressed air containers spacer from each other each enclosing a plurality of said contacts and each having a volume sufiicient to hold enough compressed air for at least one extinguishing of the are between the enclosed breaking contacts, an insulated pipe line for delivering compressed air directly to at least one of said containers, a pipe line whereby at least one other of said containers is supplied with compressed air from the container that receives air from the said insulated pipe line, and a plurality of insulating pillars one supporting each of said containers.
  • a circuit breaker according to claim 1 in which the pipe lines extending between the containers are made of metal and simultaneously serve for electrically connecting the members in one container in series with those in an adjacent container.
  • a circuit breaker according to claim 1 in which the contacts of the breaking gaps in the containers are electrically connected in series with each other by the said pipe lines extending between said containers.
US357942A 1952-05-31 1953-05-28 High tension circuit breakers Expired - Lifetime US2747055A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE316522X 1952-05-31

Publications (1)

Publication Number Publication Date
US2747055A true US2747055A (en) 1956-05-22

Family

ID=20307737

Family Applications (1)

Application Number Title Priority Date Filing Date
US357942A Expired - Lifetime US2747055A (en) 1952-05-31 1953-05-28 High tension circuit breakers

Country Status (7)

Country Link
US (1) US2747055A (de)
BE (1) BE519814A (de)
CH (1) CH316522A (de)
DE (1) DE962353C (de)
FR (1) FR1077912A (de)
GB (1) GB738528A (de)
NL (1) NL94998C (de)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2856480A (en) * 1953-03-10 1958-10-14 Licentia Gmbh High voltage switch
US2881291A (en) * 1955-12-15 1959-04-07 Asea Ab Air blast circuit breaker
US2905793A (en) * 1957-06-21 1959-09-22 Ite Circuit Breaker Ltd Differential piston for recirculating gas blast interrupters
US2919329A (en) * 1956-07-10 1959-12-29 Merlin Gerin Air blast circuit breakers
US2962570A (en) * 1958-06-28 1960-11-29 Bbc Brown Boveri & Cie Electric switch
US2964605A (en) * 1955-09-22 1960-12-13 Voigt & Haeffner Ag Fluid pressure operated circuit breaker pole units
US2978559A (en) * 1957-12-16 1961-04-04 Ite Circuit Breaker Ltd Bushing mounted interrupter
US2999143A (en) * 1956-11-21 1961-09-05 Westinghouse Electric Corp Compressed-gas circuit interrupter
US3018352A (en) * 1958-10-10 1962-01-23 Asea Ab High tension air blast circuit breakers with a plurality of series connected breaking gaps per pole
US3110791A (en) * 1959-08-27 1963-11-12 Westinghouse Electric Corp Circuit interrupter with pressure-generating and interrupting contacts in insulating interrupting tube

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE564461A (de) * 1957-02-01
DE1104022B (de) * 1957-10-14 1961-04-06 Zd Y V I Plzen N P Aus Baueinheiten zusammengestellter Druckgashoechstspannungsschalter
GB928516A (en) * 1958-12-02 1963-06-12 Ass Elect Ind Improvements relating to air or gas blast electric circuit-breakers
DE1163940B (de) * 1960-02-25 1964-02-27 Asea Ab Druckluftschalter mit reihengeschalteter Trennstelle in einer Durchfuehrung
GB979783A (en) * 1960-04-29 1965-01-06 Reyrolle A & Co Ltd Improvements relating to high-voltage electric circuit-breakers of the gas-blast type
GB184999A (en) * 1962-05-07 1922-08-31 Harry Ormiston Ormiston An improved metallic paint or coating

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2153400A (en) * 1936-12-14 1939-04-04 Gen Electric Electrical switch gear
US2336316A (en) * 1940-06-08 1943-12-07 Bbc Brown Boveri & Cie High voltage electric circuit breaker
US2453555A (en) * 1943-09-11 1948-11-09 Bbc Brown Boveri & Cie Gas blast circuit breaker

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE634255C (de) * 1933-01-23 1936-08-22 Siemens Schuckertwerke Akt Ges Anlage zum Betrieb mehrerer Lichtbogenloeschvorrichtungen
CH224286A (de) * 1942-01-13 1942-11-15 Bbc Brown Boveri & Cie Freiluft-Druckgasschalter-Anordnung mit Druckluftbehältern.
DE854962C (de) * 1950-08-10 1952-11-10 Licentia Gmbh Elektrischer Hochspannungsschalter mit einer oder mehreren Leistungsunterbrechungsstellen und mindestens einer besonderen Spannungstrennstelle

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2153400A (en) * 1936-12-14 1939-04-04 Gen Electric Electrical switch gear
US2336316A (en) * 1940-06-08 1943-12-07 Bbc Brown Boveri & Cie High voltage electric circuit breaker
US2453555A (en) * 1943-09-11 1948-11-09 Bbc Brown Boveri & Cie Gas blast circuit breaker

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2856480A (en) * 1953-03-10 1958-10-14 Licentia Gmbh High voltage switch
US2964605A (en) * 1955-09-22 1960-12-13 Voigt & Haeffner Ag Fluid pressure operated circuit breaker pole units
US2881291A (en) * 1955-12-15 1959-04-07 Asea Ab Air blast circuit breaker
US2919329A (en) * 1956-07-10 1959-12-29 Merlin Gerin Air blast circuit breakers
US2999143A (en) * 1956-11-21 1961-09-05 Westinghouse Electric Corp Compressed-gas circuit interrupter
US2905793A (en) * 1957-06-21 1959-09-22 Ite Circuit Breaker Ltd Differential piston for recirculating gas blast interrupters
US2978559A (en) * 1957-12-16 1961-04-04 Ite Circuit Breaker Ltd Bushing mounted interrupter
US2962570A (en) * 1958-06-28 1960-11-29 Bbc Brown Boveri & Cie Electric switch
US3018352A (en) * 1958-10-10 1962-01-23 Asea Ab High tension air blast circuit breakers with a plurality of series connected breaking gaps per pole
US3110791A (en) * 1959-08-27 1963-11-12 Westinghouse Electric Corp Circuit interrupter with pressure-generating and interrupting contacts in insulating interrupting tube

Also Published As

Publication number Publication date
CH316522A (de) 1956-10-15
NL94998C (de)
GB738528A (en) 1955-10-12
DE962353C (de) 1957-04-18
BE519814A (de)
FR1077912A (fr) 1954-11-12

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