US3569652A - Cam operated circuit breaker with single stroke manual spring charging means - Google Patents

Cam operated circuit breaker with single stroke manual spring charging means Download PDF

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Publication number
US3569652A
US3569652A US770295A US3569652DA US3569652A US 3569652 A US3569652 A US 3569652A US 770295 A US770295 A US 770295A US 3569652D A US3569652D A US 3569652DA US 3569652 A US3569652 A US 3569652A
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United States
Prior art keywords
spring
crank shaft
operating
closing
circuit breaker
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Expired - Lifetime
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US770295A
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English (en)
Inventor
Richard HAUSER
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Westinghouse Electric Corp
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Westinghouse Electric Corp
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H3/00—Mechanisms for operating contacts
    • H01H3/22—Power arrangements internal to the switch for operating the driving mechanism
    • H01H3/30—Power arrangements internal to the switch for operating the driving mechanism using spring motor
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H3/00—Mechanisms for operating contacts
    • H01H3/22—Power arrangements internal to the switch for operating the driving mechanism
    • H01H3/30—Power arrangements internal to the switch for operating the driving mechanism using spring motor
    • H01H2003/3057—Power arrangements internal to the switch for operating the driving mechanism using spring motor provisions for avoiding idling, e.g. preventing release of stored energy when a breaker is closed, or when the springs are not fully charged
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H3/00—Mechanisms for operating contacts
    • H01H3/22—Power arrangements internal to the switch for operating the driving mechanism
    • H01H3/30—Power arrangements internal to the switch for operating the driving mechanism using spring motor
    • H01H2003/3089—Devices for manual releasing of locked charged spring motor; Devices for remote releasing

Definitions

  • a circuit breaker comprises improved means for manually operating the breaker from the open position to the closed position.
  • the circuit breaker comprises a spring-closing mechanism, and interlock means is provided to prevent operation of the spring-closing mechanism when the contacts are in the closed position.
  • an object of this invention is to provide a springoperated circuit breaker comprising a crank shaft that is rotatable from a spring-discharged position through an angle of more than 180 to a spring-charged operating position, and manual operating means that is rotatable'through an angle of less then 180 to operate the crank shaft from the springdischarged position to the spring-charged operating position.
  • a circuit breaker comprises a crank shaft rotatable in an operating direction from a spring-discharged position through an angle of more than 180 to a spring-charged operating position, and manual operating means rotatable through an angle of less than 180 to move the crank shaft from the springdischarged position to the spring-charged operating position.
  • a rotation of the manual operating means through an angle of 97 will rotate the crank shaft through an angle of more than 187 to thereby position the crank shaft in the spring-charged operating position.
  • the manual operating means comprises a manually operable member supported for movement about a fixed pivot and a pull-member pivotally supported on the manually operable member to cooperate with a crank on the crank shaft to pull the crank shaft from the spring-discharged position to the spring-charged operating position upon pivotal movement of the manually operable member.
  • the circuit breaker does not comprise latch means for latching the spring charged mechanism in the spring-charged operating position so that when the crank shaft reaches the spring-charged operating position the closing springs will automatically take over to rotate the crank shaft in the operating direction to the spring-discharged position.
  • a cam-operated closing means comprises a closing cam that is fixed to the crank shaft and that operates against a closing linkage to cam the movable contact to the closed position upon rotation of the crank shaft from the spring-charged operating position to the springdischarged position.
  • the circuit breaker comprises interlock means operable automatically to prevent an operation of the spring-closing mechanism, by operation of the manual operating means, when the circuit breaker contracts are in the closed position.
  • FIG. 1 is an end view, with parts broken away and with certain parts left out for the purpose of clarity, of a circuit breaker constructed in accordance with principles of this invention
  • FIG. 6 is a view similar to FIG. 5 illustrating the position of the handle-operating means when the handle-operating means has been manually operated to move the crank shaft from the spring-discharged position in FIG. 5 to the spring-charged operating position seen in FIG. 6;
  • FIG. 7 is a view similar to FIGS. 5 and 6 illustrating the position of parts reached after the circuit breaker has been operated to the closed position and while the handle-operating means is being moved back to the initial position;
  • FIG. 8 is a view similar to FIGS..5--7 illustrating the position of parts when the circuit breaker is in the closed position and the handle-operating means has been returned to the initial position.
  • FIG. 1 and 2 there is shown in FIG. 1 and 2 a three-pole circuit breaker 5 comprising a housing structure 7 and a circuit breaker structure 9 supported on the housing structure 7.
  • the housing structure 7 comprises a metallic base plate 11, a pair of spaced metallic sideplates 13 secured to flanges of the base plate 11, a pair of spaced metallic center plates 17 secured to the base plate 11, and a back wall structure indicated generally at 19. I
  • the circuit breaker structure 9- is a three-pole structure comprising a stationary contact 21 and a movable contact 23 for each pole unit.
  • the stationary and movable contact struc tures 21, 23 along with the supports thereof, are more specifcally described in the copending application of Fred Bould, Ser. No. 770,149 and of Fred Bould et al., Ser. No. 770,297.
  • Each of the movable contacts 23 is supported on a conducting contact arm 25 that is pivotally supported on a terminal conductor27 by means of supportmeans 29.
  • a separate insulating connecting member 31 is pivotally connected at one end thereof to the contact arm 25 and at the other end thereof to a lever 33that is welded to a common jackshaft 35.
  • the jackshaft 35 extend across all of the poles of the circuit breaker, and there is a separate lever 33 for each pole unit welded to the jackshaft 35. Only one of the contact structures is shown in FIG. 1.
  • the contact structures for the center pole unit and for the lefthand (FIG. 1) pole unit are left off of the drawing in FIG. 1 merely for the purpose of clarity. It can be understood that the contact structures for all three pole units are the same as the one contact structure shown in FIGS. 1 and 2.
  • the jackshaft 35 is supported on the sideplates 13 and center plates 17 for pivotal movement about the elongated axis thereof in a manner more specifically described in the above-mentioned application of Fred Bould et al. Ser. No. 770,295.
  • the connecting members 31, levers 33 and jackshaft 35 are part of a spring-closing mechanism 39 that is operable to close the contacts 21, 23.
  • the spring-closing mechanism 39 comprises a link member 41 that is pivotally connected, at one end thereof, to the lever 33 of the center pole unit by means of a pin 43.
  • the link 41 is pivotally connected at the other end thereof to a link 45 by means of a pin 47.
  • a roller member 49 is mounted on the pin 47 to cooperate with a closing cam 51.
  • the link 45 is pivotally connected at the other end thereof to a latch member 53 by means of a pin 55.
  • the latch member 53 is mounted for pivotal movement on a fixed pivot 57 that is supported on the center plate 17 that is seen on the left in FIG. 1.
  • the links 45 and 53 are positioned on the left-hand side of the left center plate 17 (FIG. 1).
  • a tension spring 59 is supported at one end thereof on a stationary pin 61 and operatively connected to the pin 55 at the other end thereof in order to reset the linkage in a manner to be hereinafter described.
  • the latch member 53 engages a trip shaft 63 that is a rod with a cutout portion 65 near where the latch 53 engages the periphery of the trip shaft 63.
  • the cutout portion 65 is provided so that when the trip shaft 63 is rotated in a counterclockwise direction from the FIG. 2 position to the FIG. 3 position the latch member 53 will be free to pivot to the open position seen in FIG. 3.
  • the trip shaft 63 is supported on one of the sideplates l3 and one center plate 17 for pivotal movement about the elongated axis thereof.
  • the links 53, 45, 47 and trip shaft 63, along with the operation of these members are more specifically described in the above mentioned application of Fred Bould et al. Ser. No. 770,296.
  • the closing cam 51 is fixedly secured to a crank shaft 73 that is rotatably mounted on suitable bearing means that are supported on the center plates 17.
  • the crank shaft 73 is mounted for rotational movement about the elongated axis thereof.
  • a pair of crank arms 75 are fixedly supported on the crank shaft 73 at the opposite ends of the crank shaft 73.
  • a separate tension spring 77 is supported at one end thereof on a support 79 that is pivotally connected to the associated crank arm 75 by means of a pin 81.
  • Each of the tension springs 77 is connected at the other end thereof, to a pin 83 that is supported on the center plates 17.
  • a handle-operating mechanism indicated generally at 87 is provided for manually closing the circuit breaker.
  • a crank 89 having a notch or catch means 91 therein, is fixedly secured to the crank shaft 73.
  • a generally U-shaped supporting plate 93 is fixedly secured, at the right portion thereof, to the base plate 11.
  • a generally U-shaped manually operable member 95 is pivotally mounted on a pin 97, that is. supported on and between the legs of the U-shaped supporting member 93.
  • a torsion spring 99 is coiled around the pin 97, and engages a stationary pin 101, that is supported onthe support 93, and a pin 103, that is supported on the member 95, to bias the manually operably member 95 in a clockwise (FIG. 5) direction to the initial position shown in FIG. 5.
  • the U-shaped manually operable member 95 is provided with an extension 105 that receives an elongated handle rod 107.
  • a generally U- shaped hook member or pull member 109 is pivotally supported on and between the legs of the member 95 by means of a pin 111. The hook member 109 is biased in a clockwise (FIG. 5) direction by means ofa torsion spring 113.
  • a pin 1 is supported on and between the legs of the hook member 109 to engage the crank 89 in the notch or catch means 91 during operation of the manual operating means 87.
  • An interlock member 119 is fixedly secured to the member 109 to cooperate with the pin 47 in order to prevent cooperative engagement between the members 109 and 89 when the contacts are in the closed position.
  • the circuit breaker is shown in FIG..2 in the closed position.
  • the cam member 51 comprises a cam surface that cooperates with the roller 49 and that can be more specifically described as having three continuous surface portions that cooperate with the roller 49.
  • a'fixed-radius surface portion 125 engages the roller 49.
  • the cam surface is shaped to provide a reset surface portion 127 and a closing surface portion 129.
  • the fixed-radius surface portion 125 of the cam 51 engages the roller 49 to position the link 41 in the closed position with the link 41 operating through the lever 33 of the center pole unit to maintain the jackshaft 35 in the closed position thereby to maintain the three contact arms of the three pole units in the closed position illustrated in FIG. 2.
  • the link 41 will maintain the contact 25 in the closed position only so long as the link 41 is held in the closed position through the link 45 by means of the latch 53 that is latched in the reset position shown in FIG. 2 by means of a trip shaft 63.
  • the trip shaft 63 can be manually pivoted to the open position by manual operation of a trip lever 131 (FIG. 1) or automatically operated to the open position by operation of an electromagnetic trip device indicated generally at 133 in FIG. 1,
  • the trip device i 133 is more specifically described in the above-mentioned copending application of Nagar Patel Ser. No. 770,236.
  • the trip device 133 is automatically operated in response to an abnormal or overload current condition above a predetermined value to rotate the trip bar 63 to the open position.
  • the circuit breaker With the circuit breaker in the open position seen in FIG. 3, the circuit breaker is closed by operation of the manual operating means 87 illustrated in FIGS. 58.
  • the manual operating means 87 is shown in the initial position in FIG. 5 with the circuit breaker in the open position as indicated from the links 45, 41 (FIG. 2) to cooperate with the interlock member 119 in a manner to be hereinafter specifically described.
  • the operating handle rod 107 When it is desired to close the circuit breaker, the operating handle rod 107 is operated to pivot the manually operable member in a counterclockwise (FIG. 5) direction. As can be seen in FIG.
  • the pull member 109 has a surface 135 that rests on a spacer 137 (that is positioned on the crank shaft 73) to limit clockwise movement of the pull member 109 about the pivot 111 when the member 95 is in the initial position seen in FIG. 5.
  • the undersurface of the pull member 95 is formed with a depression at 136 (seen in FIG. 6) adjacent the surface 135.
  • the depression 136 will move against the spacer 137 permitting the pull member 109 to move clockwise on the pivot 11, under the bias of the spring 113, during which movement the pin will move into the captured position in the notch 91 of the crank 89, and upon further angular movement of the member 95 the pin 115 will pull the crank 89 in a counterclockwise direction.
  • the relatively unrestrained first 8 of angular travel of the member 95 permits the operator to easily get the handle rod 107 in a free position away from the front of the breaker before the operator must work to charge the springs 77.
  • the geometry, construction and support of the members 95, 109, 89 are such that a total movement of 97 of the member 95 about the pivot 97 will rotate the crank shaft 73 187 from the spring-discharged position seen in FIG. 5 to the spring-charged operating position seen in FIG. 6.
  • spring means (not shown) operate automatically to bias the trip shaft in a clockwise direction to the reset position seen in FIG. 4 wherein the periphery of the trip shaft 63 latches the latch member 53 against counterclockwise movement to hereby latch the circuit breaker linkage in the reset position seen in FIG. 4.
  • the reset spring 59 operates to reset the linkage as the reset surface 127 of the cam 51 passes the roller 49.
  • the closing springs 77 will take over to rapidly rotate the crank shaft 73 counterclockwise to the spring-discharged contact-closed position seen in FIG. 2.
  • closing movement of the link 41 will operate through the lever 33 of the center pole unit to move the jackshaft 35 counterclockwise, and since the three levers 33 for the three pole units, are all connected to the jackshaft 35, this movement will simultaneously operate through the three levers 31 to pivot the three contact arms to the contact-closed position seen in FIG. 2.
  • the closing cam surface 129 moves past the roller 49 and the fixed-radius surface 125 moves against the roller 49. Movement of the fixed-radius cam surface 125 against the toll roller 49 will not affect the closed position of the contacts since the fixed-radius surface 125 serves to prop the roller 49 without affecting the position of the contact arms.
  • the cam member 51 is moved to move the reset cam surface 127 past the roller 49 whereupon the spring 59 serves to reset the links 41, 45 and latch 53 (FIG. 4), and continued movement of the crank shaft 73 to the spring-charged operating position (FIG. 6) will move the closing cam surface 129 adjacent the roller 49 so that when the closing springs 77 take over to complete the 360 travel of the crank shaft 73 the closing cam surface 129 will move against the roller 49 to thrust the contact arms 25 to the contact-closed position seen in FIG. 2.
  • interlock means is provided to automatically prevent operating engagement between the hook member 109 and crank 89 when the contacts are in the closed position.
  • a rigid interlock member 119 (FIGS. 1 and 5-8) is fixedly secured to the side of thehook member 109.
  • the knee picot pin 47 between the toggle links 45, 41 is extended over the to where the pin 47 is in the path of movement of the interlock member 119 when the contacts are in the closed position.
  • the interlock member 119 With the pin 47 in the contact-closed position seen in FIGS. 2 and 8, the interlock member 119 will rest on the pin 47 to prevent clockwise movement of the hook member 109 about the pivot 111 to thereby prevent engagement of the pin 115 in the notch 91 of the crank 89.
  • the handle 107 is released and the spring 99 biases the manually operable member 95 in a clockwise directionwhereupon the interlock member 119 engages the pin 47 (FIG. 7), and as the member 95 reaches the initial position seen in FIG.
  • an improved circuit breaker comprising a crank shaft operable through an angle of more than l80 (187 in one embodiment) from a spring-discharged position to a spring-charged operating position, and manual operating means operable through an angle ofless than (97 in the one embodiment) to operate the crank shaft from the springdischarged position to the spring-discharged operating position.
  • the manual operating means comprises a manually operable member supported for movement about a fixed pivot and a hook member pivotally supported on the manually operable member to cooperate with a crank on the crank shaft to pull the crank shaft from the spring-discharged position to the spring-charged operating position upon manual operation of the manually operable member.
  • the circuit breaker is a single-stroke circuit breaker in that when the crank shaft reaches the spring-charged operating position a pair of closing springs, that are connected to the crank shaft, are moved over center such that the closing springs will take over and rotate the crank shaft to the contact-closed position as the closing springs discharge.
  • a cam member that is fixedly secured to the crank shaft, cooperates with a roller, that is connected to the knee pivot pin of the pair of operating links, to thrust the movable contact arms to the closed position when the links are latched in a reset position by latch means.
  • the circuit breaker is opened, either manually or automatically, by operation of a trip shaft that releases the latch member to thereby release the operating links permitting the links to collapse to a tripped or open position.
  • the circuit breaker With the circuit breaker in the open position, the circuit breaker is closed by a single stroke of the handle-operating means during which movement the cam member moves first to position a reset cam surface adjacent the roller permitting the roller to move to a reset position under the bias of the reset spring which serves to operate the latch member and links to a reset position.
  • the cam member Under the control of the singlestroke movement of the manual operating means, moves the cam member such that a closing cam surface moves adjacent the roller after the linkages have been reset.
  • the cam surface comprises a fixed-radius cam surface so that once the contacts reach the closed position the fixed-radius cam surface will serve to prop the roller, and movement of the cam while the roller engages the fixed-radius cam surface will not affect the closed position of the contacts.
  • the circuit breaker comprises improved interlock means comprising an interlock member of the hook member that cooperates with the knee pivot pin of the toggle links to engage the interlock member and prevent cooperative engagement between the hook member and crank when the contacts are in the closed position to thereby prevent an operation of the crank shaft when the circuit breaker is in the contact-closed spring-discharged position.
  • a circuit breaker comprising a pair of contacts, a spring closing mechanism for closing said contacts, said spring closing mechanism comprising a crank shaft, closing spring means connected to said crank shaft, said crank shaft being rotatable about a fixed pivot in an operating direction through an angle of more than 180 from a spring-discharged position to a spring-charged operating position to charge said closing spring means and to position said crank shaft and said charged closing spring means overcenter such that said charged closing spring means biases said crank shaft in said operating direction toward said spring-discharged position, said charged closing spring means being dischargeable to rotate said crank shaft in said operating direction from said spring-charged operating position to said spring-discharged position, means operated by said crank shaft to close said contacts upon rotation of said crank shaft from said spring-charged operating position to said spring-discharged position, manual operating means comprising a manually operable member supported for movement about a fixed pivot through an angle of less than 180 from an initial position to an operating position, a pull member movably supported on said manually operable member, catch means on
  • a circuit breaker according to claim 1 and said pull member being pivotally supported on said manually operable member.
  • a circuit breaker according to claim 2 a first spring means biasing said manually operable member in a first direction to said initial position, and a second spring means biasing said pull member on said manually operable member in said first direction to bias said pull member into cooperative engagement with said catch means.
  • crank shaft being rotatable through an angle of between 180 and 200 from said spring-discharged position to said spring-charged operating position
  • manually operable member being pivotable through an angle of between 80 and 100 to operate said crankshaft from said spring-discharged position to said spring-charged operating position.
  • a circuit breaker according to claim 1 and upon operation of said crank shaft to said spring-charged operating position said closing spring means automatically operating to move said crank shaft in said operating direction to said spring-discharged position to effect a closing operation of said contacts.
  • a circuit breaker comprising a stationary contact, a movable contact, a movable contact arm carrying said movable contact and movable to open and close said contacts, an operating linkage, releasable latch means latching said operating linkage in a reset position, means for releasing said latch means, opening spring means, upon release of said latch means with said contacts in the closed position said operating linkage moving to a collapsed position and said opening spring means operating to move said movable contact arms to the open position, a spring-closing mechanism for moving said movable contact arm to the closed position, said spring-closing mechanism comprising a crank shaft, closing spring means connected to said crank shaft, said crank shaft being rotatable about a fixed pivot in an operating direction through an angle of more than from a spring-discharged position to a spring-charged operating position to charge said closing spring means and to position said crankshaft and said charged closing spring means and to position said crank shaft and said charged closing means overcenter such that said charged closing spring means biases said crank shaft in
  • said cam means comprising a cam follower operatively connected to said operating linkage and a cam member fixedly connected to said crank shaft, said cam membercomprising a reset surface a fixed radius surface and a closing surface, during said manual closing operation of said circuit breaker said cam member 7 moving in one direction to move said reset surface against said cam follower to effect a resetting operation of said circuit breaker and then to move said closing surface against said cam follower to thrust said cam followerto the closed position to move said movable contact arm to the closed position and said cam member then moving to move said fixed radius surface against said cam follower during which movement of said fixed radius surface against said cam follower said fixed radius surface serves to prop said cam follower such that movement of said cam member while said fixed radius surface is adjacent said cam follower will not affect the closed position of said movable contact arm.
  • a circuit breaker according to claim 1 said circuit breaker comprising a linkage and latch means latching said linage in a. reset position when said contacts are closed and said crank shaft is in said spring-discharged position, and said circuit breaker comprising interlock means automatically operable to prevent cooperative engagement between said pull member and said catch means when said linkage is in said reset position and said circuit breaker is in the springdischarged contact-closed position.
  • said cam means comprising a cam follower connected to said linkage and a cam member connected to said crank shaft, upon operation of said manually operable member from said initial position to said operating position said pull member operating when said contact arm is in the open position and said linkage is in the collapsed position to cooperate with said catch means to rotate said crank shaft from said spring-discharged position to said spring-charged operating position during which movement of said cam member operates said cam follower to effect a resetting operation of said linkage and a relatching of said reset linkage prior to movement'ofsaid crank shaft overcenter and during which further movement of said crank shaft said crank shaft moves overcenter to said spring-charged operating position whereupon said closing spring means takes over to move said crank shaft in said operating direction from said spring-charged operating position to said spring-discharged position during which movement of said cam member operates through said cam follower and said reset latched linkage to move said movable contact arm to the closed position, and interlock means operating automatically to prevent cooperative engagement between said pull member and said
  • a circuit breaker according to claim 9 and said interlock means comprising a first interlock member connected to said pull member and a second interlock member connected to said linkage.

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  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
  • Telephone Set Structure (AREA)
  • Mechanisms For Operating Contacts (AREA)
  • Basic Packing Technique (AREA)
US770295A 1968-10-24 1968-10-24 Cam operated circuit breaker with single stroke manual spring charging means Expired - Lifetime US3569652A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US77029668A 1968-10-24 1968-10-24
US77029568A 1968-10-24 1968-10-24

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US3569652A true US3569652A (en) 1971-03-09

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ID=27118297

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US770295A Expired - Lifetime US3569652A (en) 1968-10-24 1968-10-24 Cam operated circuit breaker with single stroke manual spring charging means
US770296A Expired - Lifetime US3590192A (en) 1968-10-24 1968-10-24 Supporting and spring-charging means for circuit breaker

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US770296A Expired - Lifetime US3590192A (en) 1968-10-24 1968-10-24 Supporting and spring-charging means for circuit breaker

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US (2) US3569652A (enrdf_load_stackoverflow)
BE (1) BE740592A (enrdf_load_stackoverflow)
ES (1) ES372546A1 (enrdf_load_stackoverflow)
FR (1) FR2021496A1 (enrdf_load_stackoverflow)
GB (2) GB1288595A (enrdf_load_stackoverflow)

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US3729065A (en) * 1971-03-05 1973-04-24 Gen Electric Means for charging a stored energy circuit breaker closing device
US3760703A (en) * 1972-04-24 1973-09-25 Polaroid Corp Combined lost-motion and supplemental torque mechanism
US3783208A (en) * 1972-07-17 1974-01-01 Westinghouse Electric Corp Metal-enclosed switchgear with interlock means
US3849619A (en) * 1973-06-14 1974-11-19 Westinghouse Electric Corp Circuit breaker with reverse override device
US3894294A (en) * 1972-04-24 1975-07-08 Polaroid Corp Flat torque rate drive system
US4163133A (en) * 1976-04-28 1979-07-31 Westinghouse Electric Corp. Circuit breaker apparatus including jack shaft support
US4251702A (en) * 1979-06-25 1981-02-17 General Electric Company Circuit breaker having multiple spring actuating mechanisms
DE10127552B4 (de) * 2001-06-01 2007-01-04 Siemens Ag Verfahren zur Kopplung der Schaltwelle eines Niederspannungs-Leistungsschalters mit einem bewegbaren Kontaktträger
CN111463034A (zh) * 2020-04-09 2020-07-28 浙江裕欣电力科技有限公司 一种充气式高压开关柜用断路器按钮式操作机构
US11253942B2 (en) * 2017-09-08 2022-02-22 Illinois Tool Works Inc. Methods and apparatus for automatic control of a welding-type power supply
US20220208489A1 (en) * 2020-12-29 2022-06-30 Schneider Electric USA, Inc. Low impact auxiliary switch mechanically operated contacts (moc) mechanism

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US3723686A (en) * 1971-06-28 1973-03-27 Mc Graw Edison Co Quick closing mechanism for circuit interrupter
US3848102A (en) * 1973-07-30 1974-11-12 Gen Electric Electric circuit breaker with auxiliary trip mechanism
US4153828A (en) * 1976-07-08 1979-05-08 General Electric Company Stored-energy operating means for an electric circuit breaker
US4137437A (en) * 1977-06-03 1979-01-30 Westinghouse Electric Corp. Circuit breaker having improved movable crossbar and spring holder
JPS58131622A (ja) * 1982-01-29 1983-08-05 三菱電機株式会社 気中しや断器
US4506246A (en) * 1983-05-09 1985-03-19 Square D Company Interlock scheme for high amperage molded case circuit breaker
US4587390A (en) * 1985-01-07 1986-05-06 Golden Gate Switchboard Co. Vacuum circuit breaker
DE3506383A1 (de) * 1985-02-23 1986-09-04 Sachsenwerk, Licht- und Kraft-AG, 8000 München Elektrische schaltanlagen und schaltverfahren dieser anlage
US4644120A (en) * 1985-07-18 1987-02-17 Westinghouse Electric Corp. Molded case circuit breaker with a movable lower electrical contact positioned by a torsion spring
US4743876A (en) * 1987-07-24 1988-05-10 Westinghouse Electric Corp. Circuit interrupter with undervoltage trip mechanism
US5224590A (en) * 1991-11-06 1993-07-06 Westinghouse Electric Corp. Circuit interrupter having improved operating mechanism
DE4333828C1 (de) * 1993-09-30 1995-03-09 Siemens Ag Einrichtung zur Steuerung der Einschaltung eines Leistungsschalters
GB9406309D0 (en) * 1994-03-30 1994-05-25 Gen Electric Closing arrangement for high ampererated circuit breaker
US5575381A (en) * 1994-09-30 1996-11-19 General Electric Company Interlock for high ampere-rated circuit breaker contact closing springs
US5548261A (en) * 1995-03-03 1996-08-20 Eaton Corporation Trip device for a circuit breaker
DE10323094B3 (de) * 2003-05-16 2004-08-12 Siemens Ag Leistungsschalter
US7075027B1 (en) 2005-05-19 2006-07-11 Eaton Corporation Spring-charged mechanism assembly employing two trunnion members moveable in different planes and circuit interrupter employing the same
US7545245B2 (en) * 2006-05-01 2009-06-09 Eaton Corporation Manual opening device and electrical switching apparatus employing the same
US8338727B2 (en) * 2009-04-22 2012-12-25 Abb Technology Ag Interpole coupling system
US20150069021A1 (en) * 2013-09-11 2015-03-12 Siemens Industry, Inc. Apparatus and method for reducing electrical arcing in a circuit breaker while transitioning to a closed circuit condition

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US3729065A (en) * 1971-03-05 1973-04-24 Gen Electric Means for charging a stored energy circuit breaker closing device
US3760703A (en) * 1972-04-24 1973-09-25 Polaroid Corp Combined lost-motion and supplemental torque mechanism
US3894294A (en) * 1972-04-24 1975-07-08 Polaroid Corp Flat torque rate drive system
US3783208A (en) * 1972-07-17 1974-01-01 Westinghouse Electric Corp Metal-enclosed switchgear with interlock means
US3849619A (en) * 1973-06-14 1974-11-19 Westinghouse Electric Corp Circuit breaker with reverse override device
US4163133A (en) * 1976-04-28 1979-07-31 Westinghouse Electric Corp. Circuit breaker apparatus including jack shaft support
US4251702A (en) * 1979-06-25 1981-02-17 General Electric Company Circuit breaker having multiple spring actuating mechanisms
DE10127552B4 (de) * 2001-06-01 2007-01-04 Siemens Ag Verfahren zur Kopplung der Schaltwelle eines Niederspannungs-Leistungsschalters mit einem bewegbaren Kontaktträger
US11253942B2 (en) * 2017-09-08 2022-02-22 Illinois Tool Works Inc. Methods and apparatus for automatic control of a welding-type power supply
CN111463034A (zh) * 2020-04-09 2020-07-28 浙江裕欣电力科技有限公司 一种充气式高压开关柜用断路器按钮式操作机构
US20220208489A1 (en) * 2020-12-29 2022-06-30 Schneider Electric USA, Inc. Low impact auxiliary switch mechanically operated contacts (moc) mechanism
US11715612B2 (en) * 2020-12-29 2023-08-01 Schneider Electric USA, Inc. Low impact auxiliary switch mechanically operated contacts (MOC) mechanism

Also Published As

Publication number Publication date
ES372546A1 (es) 1972-02-01
BE740592A (enrdf_load_stackoverflow) 1970-04-01
FR2021496A1 (enrdf_load_stackoverflow) 1970-07-24
GB1288595A (enrdf_load_stackoverflow) 1972-09-13
GB1288596A (enrdf_load_stackoverflow) 1972-09-13
US3590192A (en) 1971-06-29

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