US2866044A - Circuit interrupting device - Google Patents

Circuit interrupting device Download PDF

Info

Publication number
US2866044A
US2866044A US460170A US46017054A US2866044A US 2866044 A US2866044 A US 2866044A US 460170 A US460170 A US 460170A US 46017054 A US46017054 A US 46017054A US 2866044 A US2866044 A US 2866044A
Authority
US
United States
Prior art keywords
contact
circuit
axis
interrupting device
terminal
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
US460170A
Other languages
English (en)
Inventor
Earl F Beach
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.)
CBS Corp
Original Assignee
Westinghouse Electric Corp
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 Westinghouse Electric Corp filed Critical Westinghouse Electric Corp
Priority to US460170A priority Critical patent/US2866044A/en
Priority to DEW17201A priority patent/DE1041567B/de
Priority to FR1139615D priority patent/FR1139615A/fr
Priority to CH336479D priority patent/CH336479A/de
Priority to JP2625655A priority patent/JPS323072B1/ja
Application granted granted Critical
Publication of US2866044A publication Critical patent/US2866044A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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
    • H01H33/12—Auxiliary contacts on to which the arc is transferred from the main contacts
    • H01H33/121—Load break switches
    • H01H33/125—Load break switches comprising a separate circuit breaker
    • H01H33/127—Load break switches comprising a separate circuit breaker movable with a sectionalising contact arm and operated by such movement

Definitions

  • a further object of my invention is to provide an improved and highly efficient load-break disconnecting switch in which the contact structure of the arc-extinguishing device is opened and closed by snap action.
  • Still a further object of my invention is to provide an improved operating mechanism for the arc-interrupting device of a load-break disconnecting switch.
  • -Yet another object is to provide a load-break disconnecting switch in which the circuit is broken within the arc-interrupting device, and, during the closing operation, the circuit is made between the contacts of the arc-interrupting device and not at the switch contact members.
  • Figure 1 is a side elevational view of a load-break disconnecting switch embodying features of my invention, and shown in the closed-circuit condition;
  • Fig. 2 is a plan view, partially in section, of a portion of a three-phase installation mounted in a suitable cubicle and showing how the three phases may be simultaneously opened by a single common drive shaft;
  • Fig. 3 is an enlarged plan view, partially in section, of my improved load-break disconnecting switch, the several parts thereof being indicated in the closed-circuit position-
  • Fig. 4 is a fragmentary vertical sectional view through the interrupting device and mechanism of my invention
  • Fig. 5 is a vertical sectional view taken substantially along the line VV of Fig. 4, the several parts thereof being indicated in the closed circuit position;
  • Fig. 6 is a side elevational view, partially in section, of the hinge base of my improved disconnecting switch
  • Fig. 7 is a fragmentary side elevational view, partially in section, of the load-break disconnecting switch of my invention in the partially open-circuit position, with the over-center spring mechanism being shown in its intoggle position;
  • Fig. 8 is a fragmentary sectional view through the mechanism housing, indicating the position of the several parts in the fully open-circuit position of the interrupting device, the several parts being drawn to a reduced scale.
  • the reference numeral 1 designates a cubicle, preferably fabricated of sheet metal and enclosing a plurality of interrupting devices 2, only one of which is shown, controlling a three-phase circuit.
  • the three interrupting devices 2 may be simultaneously actuated to open and close the three-phase circuit.
  • the drive shaft 3 has clamped thereto a plurality of crank arms 7, preferably one for each interrupting device 2; and the outer end of each crank arm end 7 is 7 connected by an insulating link 8 to a lug 9 disposed at the upper end of each hinge mechanism housing or frame 10, as more clearly indicated in Figs. 4 and 7 of the drawings.
  • crank arm 5 actuation of the crank arm 5, by any suitable mechanism, will etfect rotation of the drive shaft 3 and hence a simultaneous opening movement of the three insulated links 8 to effect an opening or a closing opera tion of the three interrupting devices 2, as indicated by the full and dotted lines of Fig. 1.
  • a channel base 12 which supports a pair of insulator columns 13, 14.
  • the hinge base 15 is bolted by 17 of the insulator column 13.
  • the hinge base 15 serves not only to pivotally support the'hinge mechanism housing 10, but also to provide a terminal pad 18 for an external line connection, as is well understood by those skilled in the art.
  • the other insulator column 14, supported upon the base 12, is utilized to fixedly support a main contact 20, an elongated stationary auxiliary contact 21 and a second terminal pad 22, to which the other line connection may be made to the interrupting device 2.
  • the main contact 20 cooperates with-a main switch arm or rotatable bridging contact assembly, generally designated by the reference numeral 23, and comprising a pair of cooperating contact blades 24, as more clearly indicated in Figs. 2 and 3 of the drawings.
  • the contact blades 24 are spaced apart by a channel-shaped member 25 bolted thereto, as at 26, and their right-hand ends, as viewed in Fig. 3,
  • a metallic sleeve support 30 is secured by bolts 31 to the left-hand end of the frame 10, as shown in Fig. 4 of the: drawings.
  • the support 30 has an internally threaded recess 32;. into which: is threadedly secured the end. of an insulating interrupting tube 33, as shown in Fig.4.
  • the base of therecess 32- is apertured, as at 34, to accommodate therethrough; a movablearcing contact rod 35, which is biasedtowardr the open position by a compression spring- 36..
  • the compression spring 36 seats at oneendrupomthe end1washer: 37 of a stack of washers, which collectively. define an interrupting arc passage 38, through which the movable arcing contact rod 35 moves during; the. opening operation.
  • a spacing tube 41 disposed internally within the interrupting tube 33 between the washers 37 and the sleeve support 30.
  • a relatively stationary arcing contact 42 is secured by a threaded connection to a perforated end cap 43, the latter being threadedly secured, as at.44, to an internally threaded outer end 45 of the interrupter tube 33.
  • the perforations or apertures 46 provided in the end cap 43, permit gases, evolved during the interrupting operation within the interrupting tube 33, to flow. thereoutof to atmosphere.
  • the outer end of the stationary arcing contact 42 is extended to provide a movable auxiliary contact 47, which bears against the side of the auxiliary contact 21, as indicated in-Figl of the drawings.
  • the right-hand end of. the movable arcing contact rod 35 is enlarged, as shown-in;Fig. 3, to form a movable contact yoke 48, having a bearing aperture, 49 therethrough to accommodate a pin50.
  • Encircling the pin50. are a pair of guide rollers 51 which are guided insl-ots, or race tracks 52. integrally formed with the mechanism. housing 10, as more clearly shown in Fig. of the drawings. Also encirclingthe pin 50 is a pair of shoulder.
  • The-hinge base forms a pair of upstanding supports; 59, having apertures 60 internally threaded to threadedly secure into place thehinge' pins 27, as .shown in Fig. 5.
  • the hinge base 15 has an apertured lug 61, through which extendsa pin 62.
  • the pin 62 pivotally supports a springend 63 having grooves 64 onto which ,is threaded one end of a helical tension spring 65.
  • Preferably spacing sleeves 68 encircle the pin 67 to maintain the upper spring support 66 in a-central position, as shown in Fig. 5'.
  • the second parallel path for current flow has a greater resistance than the first-mentioned current path, and consequently in the closed circuit position of the device practically all of the current will flow through the device by way of the main contact 20 and the main switch arm 23.
  • the insulating washers 37 defining the arcing passage 28' are preferably of a suitable gas-evolving material
  • a circuit interrupting device including spaced terminals, a rotatable bridging contact assembly supported for rotation around an axis on one terminal and adapted to be swung around said axis into contacting bridging engagement with the other spaced terminal to complete the circuit between the terminals, an auxiliary interrupting device having a movable auxiliary contact, an operating lever pivotally supported on a movable part of the contact asembly at a point off of said axis which rotates during the opening and closing operations, means positively connecting one end of the operating lever at all times with the movable auxiliary contact, and means biasing the operating lever to one side or the other of the axis of its pivotal support.
  • a circuit interrupting device including spaced terminals, a rotatable bridging contact assembly supported for rotation around an axis on one terminal and adapted to be swung around said axis into contacting bridging engagement with the other spaced terminal to complete the circuit between the terminals, an auxiliary interrupting device having a movable auxiliary contact, an operating lever pivotally supported on a movable part of the contact assembly at a point off of said axis which rotates during the opening and closing operations, means connecting the operating lever with the movable auxiliary contact, and an over-center biasing spring for biasing the operating lever to one side or the other of the axis of its pivotal support.
  • a circuit interrupting device including spaced terminals, a rotatable bridging contact assembly supported for rotation around an axis on one terminal and adapted to be swung around said axis into contacting bridging engagement with the other spaced terminal to complete the circuit between the terminals, an auxiliary interrupting device having a movable auxiliary contact, an operating lever pivotally supported on a movable part of the contact assembly at a point off of siad axis which rotates during the opening and closing operations, means connecting the operating lever with the movable auxiliary contact, and an over-center tension spring having one end thereof connected to a point intermediate the ends of the operating lever.
  • a circuit interrupting device including spaced terminals, a rotatable bridging contact assembly supported for rotation around an axis on one terminal and adapted to be swung around said axis into contacting bridging engagement with the other spaced terminal to complete the circuit between the terminals, an auxiliary interrupting device having a movable auxiliary contact, a U-shaped operating lever pivotally mounted on a rotatable portion of said bridging contact assembly, means interconnecting the movable auxiliary contact with the U-shaped operatinglever adjacent the bight portion thereof, and anovercenter. spring connected at one end to a portion of the U-shaped operating lever intermediate the ends thereof.
  • a circuit interrupting device includingspaced terminals, a rotatable bridging contact assembly including a frame, the frame being pivotally supported about an axis on one terminal so that the bridging contact assembly may be swung rotatively around said one terminal into contacting bridging engagement with the other spaced terminal to complete the circuit between the terminals, the bridging contact assembly including a main contact blade and an auxiliary interrupting tube both mounted on the framev and extending outwardly therefrom. substantially parallel to oneanother, the main blade having a length substantially equal to the spacing distance between the spaced terminalsgthe aux-- saidother terminal, and means for establishing anfarc within the tube and extinguishing it' therein.
  • a circuit-interrupting device including spaced. terminals, a rotatable. bridging contact assembly including.
  • aframe the frame being pivotally supported about. an axis on one terminal so that the bridging contact assem-.
  • bly may be swung rotatively around said' one terminal. into contacting bridging engagement with the other.
  • a load-break disconnecting switch including a pair of spaced' terminals, relatively stationary insulatingv supporting meansfor supporting saidpair of spaced terminals a fixed distance apart, a rotatable bridging contactass'embly. supported for rotation relative to said supporting: means around: an axis on one terminal, the rotatable bridging contact assembly being adaptable to be swung around said. axis into contacting bridging engagement withthe other spaced terminal to complete the circuit betweeen the terminals, the bridging contact assembly including. a rotatable auxiliary interrupting device having a movable auxiliary contact, an operating.

Landscapes

  • Arc-Extinguishing Devices That Are Switches (AREA)
  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
US460170A 1954-10-04 1954-10-04 Circuit interrupting device Expired - Lifetime US2866044A (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
US460170A US2866044A (en) 1954-10-04 1954-10-04 Circuit interrupting device
DEW17201A DE1041567B (de) 1954-10-04 1955-07-30 Lasttrennschalter
FR1139615D FR1139615A (fr) 1954-10-04 1955-10-03 Interrupteur
CH336479D CH336479A (de) 1954-10-04 1955-10-04 Trennschalter
JP2625655A JPS323072B1 (fr) 1954-10-04 1955-10-04

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US460170A US2866044A (en) 1954-10-04 1954-10-04 Circuit interrupting device

Publications (1)

Publication Number Publication Date
US2866044A true US2866044A (en) 1958-12-23

Family

ID=23827636

Family Applications (1)

Application Number Title Priority Date Filing Date
US460170A Expired - Lifetime US2866044A (en) 1954-10-04 1954-10-04 Circuit interrupting device

Country Status (5)

Country Link
US (1) US2866044A (fr)
JP (1) JPS323072B1 (fr)
CH (1) CH336479A (fr)
DE (1) DE1041567B (fr)
FR (1) FR1139615A (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3496319A (en) * 1966-12-07 1970-02-17 Empire Switchboard Co Inc High current electric switch with arc chute interlocked with movable contact,and spring driving means

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1194951B (de) * 1962-05-22 1965-06-16 Continental Elektro Ind Ag Pneumatische Steuereinrichtung fuer elektrische Hochspannungs-Druckgasschalter

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2323241A (en) * 1940-10-25 1943-06-29 Southern States Equipment Corp Electric switch
US2658977A (en) * 1948-05-08 1953-11-10 Electrical Eng Equipment Co Electrical load break switch
US2714144A (en) * 1953-04-22 1955-07-26 Mcgraw Electric Co Circuit interrupter

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE346715C (fr) *
DE579464C (de) * 1933-06-27 Aeg Schalter, dessen Kontakte im Vakuum angeordnet sind
DE547270C (de) * 1927-07-14 1932-03-22 Siemens Schuckertwerke Akt Ges Verfahren zum Ein- und Ausschalten, insbesondere von Hochleistungsstromkreisen, vermittels Schalter mit im Vakuum liegenden Schaltkontakten
NL31511C (fr) * 1929-09-23
DE597335C (de) * 1929-12-09 1934-05-22 Bbc Brown Boveri & Cie Schaltanordnung zum Unterbrechen von elektrischen Stromkreisen
DE589710C (de) * 1930-01-25 1933-12-13 Siemens Ag Elektrischer Schalter nach dem Expansionsprinzip
DE604817C (de) * 1930-07-19 1934-10-29 Siemens Schuckertwerke Akt Ges Fluessigkeitsschalter
DE728612C (de) * 1934-10-20 1942-11-30 Siemens Ag Schalter mit Lichtbogenkammer
DE662342C (de) * 1935-02-23 1938-07-11 Frida Strauss Geb Ruppel Elektrischer Hochspannungsschalter mit zwei Unterbrechungsstellen
DE668391C (de) * 1935-04-16 1938-12-02 Frida Strauss Geb Ruppel Schalter mit Lichtbogenloeschung durch Gase bzw. Daempfe
DE701778C (de) * 1935-08-30 1941-01-23 Frida Strauss Geb Ruppel Elektrischer Gasschalter mit einem in Reihe geschalteten Lufttrennschalter
DE717262C (de) * 1935-11-22 1942-02-09 Frida Strauss Geb Ruppel Elektrischer Gasschalter
DE708703C (de) * 1936-12-23 1941-07-26 Bbc Brown Boveri & Cie Leistungstrennschalter
DE690295C (de) * 1937-07-15 1940-04-22 Licht Und Kraft Akt Ges OElarmer bzw. oelloser Leistungsschalter mit parallel liegendem Stromfuehrungsschalter
DE713817C (de) * 1940-07-23 1941-11-15 Sachsenwerk Licht & Kraft Ag Leistungsschalteranordnung
DE948704C (de) * 1954-12-24 1956-09-06 Telefunken Gmbh Auf einem Traggeruest befestigte Reflektorflaeche fuer eine Richtantenne

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2323241A (en) * 1940-10-25 1943-06-29 Southern States Equipment Corp Electric switch
US2658977A (en) * 1948-05-08 1953-11-10 Electrical Eng Equipment Co Electrical load break switch
US2714144A (en) * 1953-04-22 1955-07-26 Mcgraw Electric Co Circuit interrupter

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3496319A (en) * 1966-12-07 1970-02-17 Empire Switchboard Co Inc High current electric switch with arc chute interlocked with movable contact,and spring driving means

Also Published As

Publication number Publication date
DE1041567B (de) 1958-10-23
FR1139615A (fr) 1957-07-03
JPS323072B1 (fr) 1957-05-23
CH336479A (de) 1959-02-28

Similar Documents

Publication Publication Date Title
US2838636A (en) High voltage circuit interrupting switch means
US2324891A (en) Electric circuit interrupter
US3845263A (en) Circuit breaker with spring charged operating mechanism
US2769063A (en) Circuit interrupting device
US3114815A (en) Fluid-blast circuit interrupter with improved current-transformer housing means
US3792213A (en) High-voltage circuit interrupter incorporating series vacuum interrupter elements
US2133158A (en) Circuit breaker
US2200122A (en) Circuit interrupting device
US2866044A (en) Circuit interrupting device
US2343323A (en) Electric switch
US2351426A (en) Electric switch
US2163558A (en) Circuit breaker
US4247745A (en) Vacuum-type contactor assembly
US2942085A (en) Circuit interrupter
US4379956A (en) Break-jaw construction for a disconnecting switch structure
US2810805A (en) Circuit interrupting and isolating switch
US3077526A (en) Circuit interrupting device
US3586804A (en) Disconnect switch
US3268696A (en) Circuit interrupter having vacuum type interrupter in insulating gas filled housing
US2416185A (en) Fluid blast circuit interrupter
US3064107A (en) Switching device
US2838637A (en) Circuit interrupting and isolating means for high voltage circuits
US3327082A (en) Blast-valve mechanism and accelerating torsion bar assemblage for compressed-gas circuit interrupters
US2760033A (en) Circuit interrupter
US2889434A (en) Switching device