US3813506A - Vacuum-type circuit breaker with improved ability to interrupt capacitance currents - Google Patents

Vacuum-type circuit breaker with improved ability to interrupt capacitance currents Download PDF

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Publication number
US3813506A
US3813506A US00350419A US35041973A US3813506A US 3813506 A US3813506 A US 3813506A US 00350419 A US00350419 A US 00350419A US 35041973 A US35041973 A US 35041973A US 3813506 A US3813506 A US 3813506A
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United States
Prior art keywords
contacts
interrupter
interrupters
circuit breaker
vacuum
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Expired - Lifetime
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US00350419A
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English (en)
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G Mitchell
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General Electric Co
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General Electric Co
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Publication date
Application filed by General Electric Co filed Critical General Electric Co
Priority to US00350419A priority Critical patent/US3813506A/en
Priority to CA192,407A priority patent/CA960736A/en
Priority to JP49040431A priority patent/JPS5041068A/ja
Priority to ES425281A priority patent/ES425281A1/es
Application granted granted Critical
Publication of US3813506A publication Critical patent/US3813506A/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
    • H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
    • H01H33/66—Vacuum switches
    • H01H33/666—Operating arrangements
    • 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
    • H01H33/14—Multiple main contacts for the purpose of dividing the current through, or potential drop along, the arc

Definitions

  • a multi-break vacuum circuit breaker comprises a plurality of vacuum-type circuit interrupters electrically connected in series. Closing of the circuit breaker is controlled in such a manner that any prestriking that occurs during closing consistently occurs across the contacts of a preselected one or two of the interrupters and not across the contacts of the remaining interrupters, which constitute a majority of the total number of interrupters. This maintains the contacts of the remaining interrupters in good condition for a subsequent opening operation, thereby improving the ability of the circuit breaker to interrupt capacitance currents on such an opening operation.
  • This invention relates to a vacuum-type circuit breaker comprising a plurality of vacuum-type circuit interrupters electrically connected in series and, more particularly, relates to a multi-break vacuum-type circuit breaker that has improved ability to interrupt capacitance currents.
  • Whether or not the contacts will be in a good condition during this period depends to a large extent upon the type of closing duty that the contacts had been exposed to immediately prior to the capacitance current interrupting operation. If the contacts had been closed against a high current, there is a good chance that a relatively large weld between the contacts was formed during closing. When the contacts are separated on a subsequent opening operation, this weld will be torn apart, leaving jagged edges or protuberances on the contact surfaces. The presence of these jagged edges and protuberances can materially impair the ability of the inter-contct gap or gaps to I withstand the high recovery voltage.
  • the interrupting operation is a high-current interruption
  • the highcurrent arc can burn off the jagged edges and protuberances and prevent their impairing dielectric recovery; but the arc accompanying capacitance-current interruptions is usually a low-current arc that is not very effective in burning off the jagged edges and protuberances.
  • An object of my invention is to construct a multibreak vacuum circuit breaker in such a manner that most of its breaks (i.e., inter-contact gaps) will be relatively free of jagged edges and protuberances that interfere with dielectric recovery during the build-up of recovery voltage while interrupting capacitance currents.
  • Another object is to avoid arcing during closing on a majority of the breaks of a multi-break vacuum circuit breaker and to consistently confine arcing on closing to the remaining break or breaks.
  • Another object is to provide a multi-break vacuum circuit breaker in which there is an increased opportu nity during an interrupting operation to clean up the contact surfaces that had been exposed to arcing and resultant welding during a previous closing operation.
  • I provide a vacuum-type circuit breaker comprising first and second interrupter means, the first interrupter means comprising a plurality of vacuum circuit interrupters and the second interrupter means comprising at least one vacuum circuit interrupter but fewer than in said first interrupter means.
  • the vacuum circuit interrupters are electrically connected in series with each other, and
  • Closing means is provided for driving the contacts of all of the interrupters into engagement to effect closingof the circuit breaker.
  • the closing means is controlled in such a manner that, during closing: (a) all the contacts of the first interrupter means engage prior to the time at which any of the contacts of the second interrupter means engage, and (b) the gap length between the contacts of the second interrupter means .at the time all of the contacts of said first interrupter means have reached engagement is sufficiently great as to consistently preclude a prestrike across the contacts of the first interrupter means during a closing operation.
  • FIG. 1 is a side elevational view partly in section and partly schematic showing a vacuum-type circuit breaker embodying one form of the invention. The circuit breaker is shown in open position.
  • FIG. 2 is a side elevational view of a portion of the circuit breaker of FIG. I, with'the parts in a position through which they pass during an intermediate stage of a closing operation.
  • FIG. 3 is a schematic showing of a modified form of the invention.
  • FIG. 4 is a graphic representation of certain relationships occurring during a closing operation.
  • the vacuum circuit breaker shown therein is a multi-break type of circuit breaker comprising a plurality of vacuum-type circuit interrupters 10, 11, and 12 electrically connected in series and respectively defining the breaks of the circuit breaker.
  • these interrupters are supported in stacked, vertically spaced relationship by means of a pair of horizontally spaced channels 15, each of a high strength electrical insulating material, such as glass-fibre-reinforced polyester resin.
  • the channels 15, only one of which is shown, are secured at their lower ends to lugs 18 integral with a metal base 20.
  • These channels and the soon-to-be described means for supporting the interrupters thereon are preferably of the construction disclosed and claimed in application Ser. No. 232,568-Sharp, filed Mar. 7, 1972, and assigned to the assignee' of the present invention.
  • interrupter-supporting plates 25 extending between the insulating channels are provided.
  • Each of these supporting plates is preferably of metal and is detachably clamped to the channels.
  • Each plate 25 comprises a flat body 26 extending between the channels 15 and flanges 28 at the edges of flat body which are bolted to the channels by bolts 30.
  • each supporting plate 25 Mounted atop each supporting plate 25 is one of the vacuum interrupters I0, 11, and 12. These vacuum interrupters are of a conventional design, and each comprises a highly evacuated envelope and a pair of separable contacts 42 and 43 located within the envelope.
  • Envelope 40 comprises a tubular casing 46 of a suitable insulating material, such as glass, and two metal end caps 44 and 45 at opposite ends of the casing joined to the casing by suitable glass-to-metal seals.
  • Contact 42 is a stationary contact supported on a conductive rod 47 which extends in sealed relationship through upper end cap 44; and the other contact 43 is a movable contact supported on a reciprocally movable contact rod 48 extending freely through the lower end cap 45.
  • a flexible metallic bellows 50 joined in sealed relationship at its opposite ends to rod 48 and end cap 45 provides a seal about rod 48 and permits it to be reciprocated without impairing the vacuum inside envelope 40.
  • the contacts 42 and 43 of each interrupter are shown in their fully separated, or fully open position. When contact 43 is driven upwardly into engagement with its mating contact 42, the interrupter is in a closed condition.
  • Each interrupter is secured to its supporting plate 25 by means of suitable mounting studs (not shown) fixed to the lower end cap 45 and extending through suitable openings in the supporting plate 25.
  • Each supporting plate 25 has a central opening through which freely extends the movable contact rod 48 of the interrupter supported thereon.
  • l For electrically connecting the interrupters in series, l provide a plurality of flexible conductive braids 58. These braids connect the movable contact rod 48 of each interrupter to the stationary contact rod 47 of the interrupter immediately therebelow. In the case of the bottom interrupter, another flexible braid 59 connects movable contact rod 48 of this interrupter to a lower terminal 60 of the circuit breaker.
  • the contact rod 47 of the upper interrupter 10 serves as the upper terminal of the illustrated circuit breaker.
  • a vertically extending porcelain insulating column 61 is provided for supporting the base plate 20 and electrically isolating it from ground. Only the top portion of this column 61 is shown in the drawings. Base plate 20 is secured to thetop of column 61 in a conventional manner.
  • I For enclosing the vacuum interrupters l0, l1, and 12, so as to protect them from the elements and so as to provide a housing for insulating fluid, I provide a tubular shell 62 surrounding the interrupters and the channels 15.
  • This shell 62 which is preferably of porcelain, has an annular metal flange 67 at its lower end sealed to the porcelain and projecting radially there from and suitably bolted to base plate 20.
  • shell 62 carries a metal end cap 63 that is suitably sealed to the porcelain of shell 62.
  • the contact rod 47 of the top interrupter projects through a hole in the metal end cap 63, and a suitable seal surrounds this contact rod to prevent any leakage between the rod and the cap 63.
  • the chamber 65 within the cylindrical shell 60 is filled with a suitable insulating fluid, such as sulphur hexafluoride at a pressure of about 50 p.s.i. gage.
  • a suitable insulating fluid such as sulphur hexafluoride at a pressure of about 50 p.s.i. gage.
  • This insulating fluid acts in a known manner to increase the dielectric strength, or breakdown voltage, of each interrupter along all paths within the chamber 65 that are located external to the interrupter envelope 40. The level of this breakdown voltage will be discussed in more detail hereinafter.
  • I For operating the vacuum interrupters ltli, 11, and 12, I provide an elongated operating rod 67 of electrical insulating material that extends generally parallel to the longitudinal axis of the interrupters in a position laterally spaced from the interrupter-supporting plates 25 This operating rod 67 extends downwardly through the base 20 to a suitable operator (not shown), which, when energized, applies downward closing force to rod 67. A suitable seal is provided about the operating rod where it extends through base 20. Operating rod 67 is mechanically connected'to each of the interrupters 10, 11, and 12 by linkages 70 respectively associated with the individual interrupters.
  • Each linkage 70 comprises a pivotally mounted operating lever 72 pivotally connected at one end through a pivot 71 to the operating rod 67 and at its opposite end to movable contact rod 48 of the associated interrupter. Intermediate its ends, operating lever 72 is pivotally supported on a pivot 73 carried by spaced-apart arms 74 fixed to supporting plate 25 and projecting downwardly therefrom.
  • each wipe mechanism 75 comprises a tubular cage 78, a piston-like member 79 freely slidable therein, and a compressiontype wipe spring between piston member 79 and the lower wall of the cage.
  • the wipe mechanism 75a of the upper interrupter is similar to those of the lower interrupters, and corresponding parts of the upper wipe mechanism have therefore been assigned corresponding reference numerals except with the suffix a.
  • the upper wipe mechanism 750 serves also to provide closing power for the upper interrupter, and, for this reason, is considerably larger than the other wipe mechanisms 75 and contains a considerably heavier spring 80a.
  • a latch 82 Associated with the upper wipe mechanism 75a is a latch 82 that serves, when in the position shown in FIG. 1, to prevent th movable contact rod 48 from moving upwardly to close the interrupter.
  • This latch 82 comprises a movable latching member 83 biased into a latching position by a compression spring 85.
  • the latching member 83 is controlled by a cam 87 carried by operating rod 67.
  • Another factor that contributes to the substantial elimination of prestrikes across the contacts of the lower interrupters l1 and 12 during a closing operation is that the dielectric strength of the upper interrupter 10, not only across its inter-contact gap, but also along paths external to the interrupter, is sufficiently high to withstand the full circuit-breaker voltage without breakdown. Such an external breakdown would, of course, transfer the full voltage to any gaps then present between the contacts of the lower interrupters and could cause a prestrike across these gaps since they would have then been shortened by the closing operation then in progress.
  • My circuit breaker is designed in such a manner that the breakdown voltage externally of any of the interrupters is greater than that across the interrupters fully-open inter-contact gap, thus forcing any breakdowns that do occur to occur internally instead of externally of the interrupter.
  • the desired high dielectric strength external to the interrupter is obtained in my circuit breaker by using a high-quality, pressurized dielectric fluid within the chamber 62 (e.g., the pressurized sulphur hexafluoride gas referred to hereinabove) and also by using a unitary porcelain shell for enclosing the entire stack of interrupters. This latter feature makes available the entire length of the porcelain shell to discourage a flashover external to the shell.
  • a high-quality, pressurized dielectric fluid within the chamber 62 e.g., the pressurized sulphur hexafluoride gas referred to hereinabove
  • a unitary porcelain shell for enclosing the entire stack of interrupters.
  • this upward opening movement of the operating rod 67 causes the contacts of all of the interrupters to part substantially simultaneously. More specifically, when operating rod 67 moves in an upward direction, it acts through levers 72 to drive the wipe cages 78 and 78a downwardly, causing them to impact against their corresponding piston members 79 and 79a substantially simultaneously, thus parting all of the contacts substantially simultaneously.
  • This added arcing on the contacts of interrupter 10 is desirable in providing more opportunity for clean-up of these contacts. More specifically, the longer duration arcing in interrupter 10 has more time to burn off the protuberances formed during the prior closing operatron.
  • this opening operation is a low-current capacitance switching operation
  • the arc in interrupter 10 prior to the first current zero may not be able to burn off the protuberances on the contacts of the interrupter.
  • a restrike may occur across this single interrupter while the remaining interrupters have still not parted contact. This restrike is unlikely to be detrimental because its occurrence is unlikely to lead to the build-up of excessively high voltages since with only one gap present and subject to the entire circuitbreaker voltage, another breakdown of the gap is likely to occur before an excessively high voltage can be built up.
  • any protuberance on the contacts of interrupter 10 when the contacts first part are less detrimental than in capacitance-current interruptions because the fault-current arc, typically being a very high current arc, can easily burn off the protuberances at an early stage in the interrupting operation.
  • the fault-current interrupting ability of the circuit breaker imposes no obstacle to increasing the voltage rating of the circuit breaker commensurate with its improved ability to interrupt capacitance currents at higher voltages.
  • the duration of the time delay is determined by a suitable time-delay device schematically shown at 108. This time delay is preferably set so that the contacts of interrupter 10 will still be fully open when the contacts of interrupters 11 and 12 have reached engagement, as was the case in the example illustrated in FIG. 4.
  • Opening of the interuppters 10, ll, 12 is effected by closing an opening-control switch 109 to energize the operators 100 and 102 in an opening direction.
  • operator 102 parts the contacts of interrupter 10 prior to the instant at which operator 100 parts the contacts of interrupters 11 and 12.
  • the length of time elapsing between these contact-partings is controlled by a time delay device schematically shown at 110. If it is desired to effect substantially simultaneous opening of the interrupters, this can be done by shunting-out the time delay device 110 so that closing of the switch 109 effects substantially simultaneous operation of the two operators 100 and 102.
  • the interrupters that first close can be thought of as constituting first interrupter means and the one or more interrupters that close last can be thought of as constituting second interrupter means.
  • the contacts of the first interrupter means need not reach engagement precisely simultaneously, but the last of these contacts to engage should engage sufficiently ahead of the point at which any of the contacts of the second interrupter means reach engagement as to preclude a prestrike across the contacts of the first interrupter means.
  • the contacts of the second interrupter means will still be in a substantially fully separated position at the time all the contacts of the first interrupter means have reached engagement.
  • the number of interrupters present in the second interrupter means will depend upon the total circuit breaker voltage, but this number should be less than the number of interrupters present in the first interrupter means so as to confine prestrik ing on closing to less than a majority of the interrupters.
  • said first interrupter means comprising a plurality of vacuum circuit interrupters
  • said second interrupter means comprising at least one vacuum circuit interrupter but fewer vacuum circuit interrupters than in said first interrupter means
  • each of said vacuum circuit interrupters comprising a highly evacuated envelope and a pair of contacts located within said envelope that are relatively movable into and out of engagement with each other,
  • closing means for driving the contacts of all of said interrupters into engagement to effect closing of said vacuum circuit breaker
  • a vacuum type circuit breaker as defined in claim 1 in which, during an opening operation, said opening means causes the contacts of said second interrupter means to disengage prior to disengagement of the contacts of said first interrupter means.
  • a vaccum type circuit breaker as defined in claim 1 in which said opening means drives the contacts of all of said interrupters out of engagement substantially simultaneously during an opening operation.

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  • High-Tension Arc-Extinguishing Switches Without Spraying Means (AREA)
US00350419A 1973-04-12 1973-04-12 Vacuum-type circuit breaker with improved ability to interrupt capacitance currents Expired - Lifetime US3813506A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
US00350419A US3813506A (en) 1973-04-12 1973-04-12 Vacuum-type circuit breaker with improved ability to interrupt capacitance currents
CA192,407A CA960736A (en) 1973-04-12 1974-02-13 Vacuum-type circuit breaker with improved ability to interrupt capacitance currents
JP49040431A JPS5041068A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1973-04-12 1974-04-11
ES425281A ES425281A1 (es) 1973-04-12 1974-04-11 Perfeccionamientos en interruptores de circuitos electricosdel tipo de vacio para interrumpir corrientes de falta y co-rrientes de capacitancia.

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US00350419A US3813506A (en) 1973-04-12 1973-04-12 Vacuum-type circuit breaker with improved ability to interrupt capacitance currents

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JP (1) JPS5041068A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
CA (1) CA960736A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
ES (1) ES425281A1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

Cited By (29)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50153459U (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) * 1974-06-05 1975-12-19
US3941959A (en) * 1973-04-30 1976-03-02 Siemens Aktiengesellschaft Vacuum switching apparatus with a drive unit at ground potential
EP0113953A1 (en) * 1983-01-07 1984-07-25 Mitsubishi Denki Kabushiki Kaisha On-load tap changer with vacuum switches
DE3915522A1 (de) * 1989-05-11 1990-11-15 Siemens Ag Antriebsvorrichtung fuer eine vakuumschaltroehre mit einer kontaktfeder
FR2683940A1 (fr) * 1991-11-20 1993-05-21 Alsthom Gec Disjoncteur a moyenne tension pour l'interieur ou l'exterieur.
FR2683939A1 (fr) * 1991-11-20 1993-05-21 Alsthom Gec Disjoncteur auto-sectionneur a moyenne tension et application a une cellule et a un poste a moyenne tension.
WO1999052120A1 (de) * 1998-04-08 1999-10-14 Siemens Aktiengesellschaft Hochstromschalter, insbesondere generator-leistungsschalter
WO2000021108A1 (fr) * 1998-10-02 2000-04-13 Hitachi, Ltd. Interrupteur sous vide et appareillage de commutation sous vide utilisant l'interrupteur sous vide
US6265955B1 (en) 1996-02-27 2001-07-24 Michael H. Molyneux Hermetically sealed electromagnetic relay
EP1037232A3 (de) * 1999-03-17 2001-07-25 ABBPATENT GmbH Hochspannungsschalgerät mit Serienschaltung von mindestens zwei Vakuumschaltkammern und Verfahren zum Betrieb des Hochspannungsschaltgerätes
US6362445B1 (en) * 2000-01-03 2002-03-26 Eaton Corporation Modular, miniaturized switchgear
WO2005062327A1 (de) * 2003-11-27 2005-07-07 Abb Technology Ag Schaltgerät für den mittel- und hochspannungsbereich
US20060181267A1 (en) * 2005-02-15 2006-08-17 Eaton Corporation Vacuum circuit interrupter including circuit monitoring leakage or loss of vacuum and method of monitoring a vacuum interrupter for leakage or loss of vacuum
EP2474991A1 (en) * 2011-01-06 2012-07-11 Hitachi Ltd. Switch unit and switchgear
US20120187089A1 (en) * 2008-10-27 2012-07-26 Xuanshu Chen High-voltage, super-voltage and heavy current breaker
US8466385B1 (en) 2011-04-07 2013-06-18 Michael David Glaser Toroidal vacuum interrupter for modular multi-break switchgear
US8471166B1 (en) 2011-01-24 2013-06-25 Michael David Glaser Double break vacuum interrupter
US20140224771A1 (en) * 2013-02-08 2014-08-14 David A. Rhein Current Interrupter for High Voltage Switches
US20140367360A1 (en) * 2013-06-18 2014-12-18 Hitachi, Ltd. Wear-resistant material, puffer cylinder, and puffer-type gas circuit breaker
US20150027985A1 (en) * 2013-07-23 2015-01-29 Kabushiki Kaisha Toshiba Gas circuit breaker
US20150060409A1 (en) * 2012-03-28 2015-03-05 Hitachi, Ltd. Vacuum Switch
US20150170856A1 (en) * 2013-12-18 2015-06-18 Power Products, Llc Single bottle interrupter
EP2879150A4 (en) * 2012-07-24 2016-04-13 Hitachi Ltd SWITCH
US20160111234A1 (en) * 2013-05-30 2016-04-21 Siemens Aktiengesellschaft Electric Switching Device
WO2018165653A1 (en) * 2017-03-10 2018-09-13 Abb Schweiz Ag Mechanical closing of a current interrupter
DE102018210617A1 (de) * 2018-06-28 2020-01-02 Siemens Aktiengesellschaft Hochspannungsdurchführung
US11211209B2 (en) * 2019-05-24 2021-12-28 Stacom Engineering Company Methods and systems for DC current interrupter based on thermionic arc extinction via anode ion depletion
US11302499B1 (en) * 2020-10-07 2022-04-12 Mitsubishi Electric Power Products, Inc. Vacuum circuit breaker
US11545321B2 (en) 2020-03-31 2023-01-03 Hubbell Incorporated System and method for operating an electrical switch

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5914993Y2 (ja) * 1977-03-31 1984-05-02 株式会社明電舎 真空開閉装置

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2894100A (en) * 1956-09-22 1959-07-07 Bbc Brown Boveri & Cie Circuit breaker
US3038980A (en) * 1959-12-17 1962-06-12 Gen Electric Vacuum-type circuit interrupter
US3159731A (en) * 1961-02-07 1964-12-01 Joslyn Mfg & Supply Co Switch with plural actuator devices having improved overtravel takeup for plural electrical interrupters
US3636292A (en) * 1967-02-21 1972-01-18 Sprecher & Schuh Ag Vacuum switch for alternating current interruption

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2894100A (en) * 1956-09-22 1959-07-07 Bbc Brown Boveri & Cie Circuit breaker
US3038980A (en) * 1959-12-17 1962-06-12 Gen Electric Vacuum-type circuit interrupter
US3159731A (en) * 1961-02-07 1964-12-01 Joslyn Mfg & Supply Co Switch with plural actuator devices having improved overtravel takeup for plural electrical interrupters
US3636292A (en) * 1967-02-21 1972-01-18 Sprecher & Schuh Ag Vacuum switch for alternating current interruption

Cited By (52)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3941959A (en) * 1973-04-30 1976-03-02 Siemens Aktiengesellschaft Vacuum switching apparatus with a drive unit at ground potential
JPS50153459U (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) * 1974-06-05 1975-12-19
EP0113953A1 (en) * 1983-01-07 1984-07-25 Mitsubishi Denki Kabushiki Kaisha On-load tap changer with vacuum switches
DE3915522A1 (de) * 1989-05-11 1990-11-15 Siemens Ag Antriebsvorrichtung fuer eine vakuumschaltroehre mit einer kontaktfeder
FR2683940A1 (fr) * 1991-11-20 1993-05-21 Alsthom Gec Disjoncteur a moyenne tension pour l'interieur ou l'exterieur.
FR2683939A1 (fr) * 1991-11-20 1993-05-21 Alsthom Gec Disjoncteur auto-sectionneur a moyenne tension et application a une cellule et a un poste a moyenne tension.
EP0543681A1 (fr) * 1991-11-20 1993-05-26 Gec Alsthom Sa Disjoncteur à moyenne tension pour l'intérieur ou l'extérieur
EP0543683A1 (fr) * 1991-11-20 1993-05-26 Gec Alsthom Sa Disjoncteur auto-sectionneur à moyenne tension et application à une cellule et à un poste à moyenne tension
WO1993010549A1 (fr) * 1991-11-20 1993-05-27 Gec Alsthom S.A. Disjoncteur auto-sectionneur a moyenne tension et application a une cellule et a un poste a moyenne tension
WO1993010547A1 (fr) * 1991-11-20 1993-05-27 Gec Alsthom S.A. Disjoncteur a moyenne tension pour l'interieur ou l'exterieur
US5321221A (en) * 1991-11-20 1994-06-14 Gec Alsthom Sa Self-disconnecting circuit-breaker for medium tension, and use thereof in a medium-tension station or bay
TR26197A (tr) * 1991-11-20 1995-02-15 Alsthom Gec Icerisi ve disarisi icin orta gerilimli salter (otomatik devre kesici)
US6265955B1 (en) 1996-02-27 2001-07-24 Michael H. Molyneux Hermetically sealed electromagnetic relay
WO1999052120A1 (de) * 1998-04-08 1999-10-14 Siemens Aktiengesellschaft Hochstromschalter, insbesondere generator-leistungsschalter
WO2000021108A1 (fr) * 1998-10-02 2000-04-13 Hitachi, Ltd. Interrupteur sous vide et appareillage de commutation sous vide utilisant l'interrupteur sous vide
EP1037232A3 (de) * 1999-03-17 2001-07-25 ABBPATENT GmbH Hochspannungsschalgerät mit Serienschaltung von mindestens zwei Vakuumschaltkammern und Verfahren zum Betrieb des Hochspannungsschaltgerätes
US6362445B1 (en) * 2000-01-03 2002-03-26 Eaton Corporation Modular, miniaturized switchgear
CN1894762B (zh) * 2003-11-27 2013-12-18 Abb技术股份公司 用于中电压范围和高电压范围的开关设备
WO2005062327A1 (de) * 2003-11-27 2005-07-07 Abb Technology Ag Schaltgerät für den mittel- und hochspannungsbereich
US20060181267A1 (en) * 2005-02-15 2006-08-17 Eaton Corporation Vacuum circuit interrupter including circuit monitoring leakage or loss of vacuum and method of monitoring a vacuum interrupter for leakage or loss of vacuum
US7148677B2 (en) * 2005-02-15 2006-12-12 Eaton Corporation Vacuum circuit interrupter including circuit monitoring leakage or loss of vacuum and method of monitoring a vacuum interrupter for leakage or loss of vacuum
US20120187089A1 (en) * 2008-10-27 2012-07-26 Xuanshu Chen High-voltage, super-voltage and heavy current breaker
EP2474991A1 (en) * 2011-01-06 2012-07-11 Hitachi Ltd. Switch unit and switchgear
CN102592879A (zh) * 2011-01-06 2012-07-18 株式会社日立制作所 开关单元及开关机构
US8975550B2 (en) 2011-01-06 2015-03-10 Hitachi, Ltd. Switch unit and switchgear
US8471166B1 (en) 2011-01-24 2013-06-25 Michael David Glaser Double break vacuum interrupter
US8466385B1 (en) 2011-04-07 2013-06-18 Michael David Glaser Toroidal vacuum interrupter for modular multi-break switchgear
US20150060409A1 (en) * 2012-03-28 2015-03-05 Hitachi, Ltd. Vacuum Switch
US9818562B2 (en) 2012-07-24 2017-11-14 Hitachi Industrial Equipment Systems Co., Ltd. Switch
EP2879150A4 (en) * 2012-07-24 2016-04-13 Hitachi Ltd SWITCH
US20140224771A1 (en) * 2013-02-08 2014-08-14 David A. Rhein Current Interrupter for High Voltage Switches
US10672575B2 (en) 2013-02-08 2020-06-02 Hubbell Incorporated Current interrupter for high voltage switches
US9761394B2 (en) * 2013-02-08 2017-09-12 Hubbell Incorporated Current interrupter for high voltage switches
US11024477B2 (en) 2013-02-08 2021-06-01 Hubbell Incorporated Current interrupter for high voltage switches
US20160111234A1 (en) * 2013-05-30 2016-04-21 Siemens Aktiengesellschaft Electric Switching Device
US9666392B2 (en) * 2013-05-30 2017-05-30 Siemens Aktiengesellschaft Electric switching device
US9604881B2 (en) * 2013-06-18 2017-03-28 Hitachi, Ltd. Wear-resistant material, puffer cylinder, and puffer-type gas circuit breaker
US20140367360A1 (en) * 2013-06-18 2014-12-18 Hitachi, Ltd. Wear-resistant material, puffer cylinder, and puffer-type gas circuit breaker
US20150027985A1 (en) * 2013-07-23 2015-01-29 Kabushiki Kaisha Toshiba Gas circuit breaker
US9570256B2 (en) * 2013-07-23 2017-02-14 Kabushiki Kaisha Toshiba Gas circuit breaker
US10600592B2 (en) * 2013-12-18 2020-03-24 Hubbell Incorporated Single bottle interrupter
US20150170856A1 (en) * 2013-12-18 2015-06-18 Power Products, Llc Single bottle interrupter
US11037746B2 (en) 2013-12-18 2021-06-15 Hubbell Incorporated Single bottle interrupter
US11600459B2 (en) 2013-12-18 2023-03-07 Hubbell Incorporated Single bottle interrupter
US12334286B2 (en) 2013-12-18 2025-06-17 Hubbell Incorporated Single bottle interrupter
US10971317B2 (en) 2017-03-10 2021-04-06 Abb Schweiz Ag Mechanical closing of a current interrupter
WO2018165653A1 (en) * 2017-03-10 2018-09-13 Abb Schweiz Ag Mechanical closing of a current interrupter
DE102018210617A1 (de) * 2018-06-28 2020-01-02 Siemens Aktiengesellschaft Hochspannungsdurchführung
US11211209B2 (en) * 2019-05-24 2021-12-28 Stacom Engineering Company Methods and systems for DC current interrupter based on thermionic arc extinction via anode ion depletion
US11545321B2 (en) 2020-03-31 2023-01-03 Hubbell Incorporated System and method for operating an electrical switch
US12266487B2 (en) 2020-03-31 2025-04-01 Hubbell Incorporated System and method for operating an electrical switch
US11302499B1 (en) * 2020-10-07 2022-04-12 Mitsubishi Electric Power Products, Inc. Vacuum circuit breaker

Also Published As

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JPS5041068A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1975-04-15
ES425281A1 (es) 1976-05-16
CA960736A (en) 1975-01-07

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