US2949520A - Contact structure for an electric circuit interrupter - Google Patents

Contact structure for an electric circuit interrupter Download PDF

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Publication number
US2949520A
US2949520A US730413A US73041358A US2949520A US 2949520 A US2949520 A US 2949520A US 730413 A US730413 A US 730413A US 73041358 A US73041358 A US 73041358A US 2949520 A US2949520 A US 2949520A
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Prior art keywords
arc
contact
disk
peripheral region
contacts
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Expired - Lifetime
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US730413A
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English (en)
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Harold N Schneider
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General Electric Co
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General Electric Co
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Priority to US730413A priority Critical patent/US2949520A/en
Priority to FR792644A priority patent/FR1230660A/fr
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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
    • H01H33/664—Contacts; Arc-extinguishing means, e.g. arcing rings
    • H01H33/6643—Contacts; Arc-extinguishing means, e.g. arcing rings having disc-shaped contacts subdivided in petal-like segments, e.g. by helical grooves

Definitions

  • This invention relates to contact structure for an electric circuit interrupter and, more particularly, to contact structure which is especially, though not exclusively, suited for use in circuit interrupters of the vacuum type.
  • the usual vacuum type circuit interrupter comprises a pair of separable contacts disposed within a vacuumized chamber. Circuit interruption is initiated by separating these contacts to establish an arc. Assuming that the circuit is an alternating current circuit, the arc maintains itself until about the time a natural current zero is reached, after which the arcis prevented from reigniting by the high dielectric strength of the vacuum.
  • the interrupting capacity of such an interrupter can be materially increased by moving the terminals of the are at high speed along the surfaces of the contacts or adjacent structure. Such movement tends to minimize the amount of metallic vapors generated from the contacts or adjacent structure by the arc and tends also to increase the degree of diffusion of the vapors that are generated. These factors enable the vacuum to recover its dielectric strength at an increased rate after a current zero and thus render the vacuum more capable of preventing reestablishment of the arc during this critical interval.
  • high-speed arc movement also facilitates circuitinterruption by cooling the arc column, decreasing contact heating and vaporization and promoting an increased rate of dielectric recovery.
  • an object of my invention is to provide structurally-simple and compact means for driving an are at high speed along the surfaces of a contact or similar structure.
  • Another object is to incorporate such arc-driving means into the contact structure itself and in such a manner that the arc is moved over surfaces of the contact spaced from the actual contact-making areas of the contact.
  • At least one of the mating contacts of a circuit interrupter is formed as a conductive disc having a major surface facing the other contact.
  • This major surface is provided with a contact-making area located in a region spaced from the outer periphery of the disc, and the disc is so constructed that the are established upon contact-separation is driven from the contact-making area across said major surface onto the outer peripheral region of the disc.
  • a conductor is electrically connected to the disc.
  • the disc is slotted from its outer periphery inward in such a manner that the current path extending between the conductor and an arc terminal located at substantially any angular 2,949,520 Patented Aug.
  • Fig. 1 is a sectional view of a vacuum circuit interrupter comprising contact structure embodying one form of my invention.
  • Fig. 2 is an enlarged perspective view of one of the contacts of Fig. 1.
  • Fig. 3 is an enlarged perspective view of the other contact of Fig. 1.
  • Fig. 4 is a plan view of a modified form of contact structure for use in connection with the interrupter of Fig. 1.
  • Fig. 5 is a plan view of another modified form of contact structure for use in connection with the interrupter of Fig. 1.
  • a highly-evacuated envelope 10 comprising a casing 11 of suitable insulating material and a pair of metallic end caps 12 and 13 closing off the ends of the casing. Suitable seals 14 are provided between the end caps and the casing to render the envelope 10 vacuum tight.
  • the upper contact 17 is a sta tionary contact suitably secured to a conductive rod 17a, which at its upper end is united to the upper end cap 12.
  • the lower contact 18 is a movable contact joined to a conductive operating rod 18a which is suitably mounted for vertical movement.
  • the operating rod 18a projects through an opening in the lower end cap 13, and a flexible metallic bellows 20 provides a seal about the rod 18a to allow for vertical movement of the rod without impairing the vacuum inside the envelope 10.
  • the bellows 20 is sealingly secured at its respective opposite ends to the operating rod 18a and the end cap 13.
  • I coupled to the lower end of the operating rod 18a, I provide suitable actuating means (not shown) which is capable of driving the contact 18 downwardly out of engagement with the contact 17 so as to open the interrupter and which is also capable of returning the contact 18 to its illustrated position so as to close the interrupter.
  • suitable actuating means (not shown) which is capable of driving the contact 18 downwardly out of engagement with the contact 17 so as to open the interrupter and which is also capable of returning the contact 18 to its illustrated position so as to close the interrupter.
  • Each contact is of a disc shape and has one of its major surfaces facing the other contact.
  • the central region of each contact is formed with a recess 29 in this major surface, and an annular contact-making area 30 surrounds this recess.
  • These annular contact makingareas 30 abut against each other when the contacts'arc in their closed position of Fig. l, and are of such a diameter that the current flowing through the closed c0ntacts follows a loop-shaped path L, as is indicated by the dot-dash lines of Fig. 1.
  • This loop-shaped path has a magnetic effect which tends in a well known manner to lengthen the loop.
  • the magnetic effect of the loop will impel the arc radially outward. The manner in which this action is utilized will soon be explained in greater detail.
  • slots 32 extending from its outer periphery 33 inward. These slots collectively divide each of the contact discs into a series of discrete segments 34 angularly spaced around the contact making region 30.
  • these slots 32 are shown as being of a generally spiral configuration terminating in a mouth 35 at the disc periphery.
  • Each slot extends from its mouth 35 in a generally tangential direction with respect to the periphery and terminates only after extending at least to a point near the angular position of the mouth of an adjacent slot.
  • the adjacent slots angularly overlap each other as is shown in Figs. 2 and 3. The importance of the above described slot configuration will soon be pointed out in detail.
  • this current is required to follow a path which is to an effective extent tangential with respect to the periphery 33 in the region of the am, as is illustrated by the dotted line of Fig. 2.
  • the magnetic loop has developed a net tangential force component.
  • This net tangential force component drives the arc in an angular, or circumferential, direction about the contact, causing it to move to the end of the segment 34 and to jump across the slot 32 to the next segment 34.
  • Such movement of the arc is advantageous in that it lessens the amount of contact material that will be vaporized by the arc and also increases the degree of diffusion of the vapors that are generated. This enables the vacuum to recover its dielectric strength at an increased rate and thereby improves its ability to prevent reestablishment of the are after a current zero, thus increasing the interrupting capacity of the interrupter.
  • the disc should be slotted from its outer periphery inward, and the slot configuration should be such that the current path extending between the conductor 18a and an arc terminal located at substantially any angular point on the outer peripheral region has a net component extending generally tangentially with respect to the periphery in the vinicity of the arc.
  • the slot configuration should be such that this net tangential component extends from the arc in the same angular direction for substantially all angular positions of the are on the peripheral region of the contact, so that motion of the arc terminal is continued in a single angular direction.
  • angular direction used hereinabove, is meant a clockwise or counterclockwise direction relative to the central region of the contact.
  • Fig. 4 is a plan view of a modified form of contact disc 18.
  • a single slot 40 extends from the outer periphery of the disc 18 inwardly toward the center of the disc.
  • This slot 40 has an angular extent of more than 360 degrees, which is much greater than that of the slots 32 of Fig. 2.
  • this slot 40 is alone sufiicient to force all current flowing to an arc terminal located at substantially any angular point on the outer peripheral region to follow a path having a net component extending generally tangentially with respect to the periphery in the vicinity of the arc.
  • Fig. 5 is a plan view of another modified form of contact disc 18.
  • the slots 42 are primarily of a straight line configuration, but they nevertheless require the current path through the contact to be of the required tangential configuration.
  • the net tangential force component is more pronounced when the arc is located near the outer periphery of the contact, as compared to when the arc is located near the central region of the contact.
  • My contact arrangement effectively utilizes this characteristic by providing a radially-acting force component which continuously biases the are into this outer peripheral region where the tangential forces are more pronounced.
  • the loop L extends radially outward as well as tangentially, it provides a continuously-acting radial force urging the arc onto the peripheral region.
  • both of the mating contact discs 17 and 18 of a single interrupter are slotted in the same general manner.
  • the slots 32 in the two discs would appear approximately to register, or align. Because of this alignment, the current path in the upper disc 17 has substantially the same configuration as the current path in the lower disc 18, as is indicated, for example, by the dotted lines of Fig. 3.
  • this current path in the upper disc 17 coacts with the arc to define a tangentially-acting loop circuit having a magnetic effect that impels the upper terminal of are around the periphery of the contact, thus supplementing the arc-impelling forces previously-described in connection with the lower arc terminal.
  • the mating discs can be slotted each in a different manner, but yet in such a manner that the two terminals tend to move in the same angular direction.
  • the slot configuration of Fig. 2 could be used for one of the discs and that of Fig. 4 for the other disc. With this combination of discs, the current path through each of the two discs will have a net tangential component extending from the arc in the same angular direction, thus providing forces tending to move both are terminals in the same angular direction.
  • the slots (32) extend entirely through the thickness dimension of the discs, i.e., from one major surface to the other, so as to provide for substantially complete separation of the segments (34), at least in the outer peripheral region of the discs.
  • the slots may be formed in such a manner as to extend only partially through each disc.
  • An important advantage of my disclosed contact arrangement is that any substantial arc erosion which does occur occurs in regions which are remote from the actual contact-making areas 30.
  • the usual contact-closing pressures, as well as the current can be evenly distributed about the contacts to minimize contactwelding, and, in addition, the desired amount of contact wipe can be maintained unimpaired.
  • contact wipe is meant the distance moved by the contact actuating mechanism after the contacts first touch during a closing stroke.
  • Another advantage of my disclosed contact arrangement is that it readily lends itself to the establishment of a symmetrical electric field in the region of the arcing gap, i.e., a field which is generally symmetrical with respect to a reference plane which bisects the arcing gap between the fully-open contacts and extends perpendicular to the longitudinal axes of the contact rods.
  • This symmetry follows from the fact that the disclosed contacts themselves are of the same general shape and are disposed generally symmetrically with respect to such a reference plane.
  • arcing gaps in general have a lower breakdown strength when subject to voltage of one polarity then when subjected to voltage of an opposite polarity.
  • a pair of coacting contacts relatively movable from, a position of engagement to a position of disengagement to establish a circuitinterrupting are between said contacts, at least one of said contacts comprising a conductive disk having a major surface facing the other of saidcontacts, said contacts being constructed to initiate said are at a point inwardly spaced from the outer peripheral region of said disk and to provide forces for driving said arc across said major surface onto said outer peripheral region, a conductor electrically connected to said disk at a location spaced from the outer periphery of said disk for carrying current to and from said disk, said disk being slotted from its outer periphery inward in such a manner that the current path between said conductor and an arc terminal located at any point on said major surface adjacent the periphery forms with said arc a loop circuit having a magnetic effect exterting a net component of force on the arc generally tangentially with respect to said periphery, said net tangential force component acting in the same angular direction for
  • a pair of coacting contacts relatively movable from a position of engagement to a position of disengagement to establish a circuitinterrupting are between said contacts, at least one of said contacts comprising a conductive disk having a major surface facing the other of said contacts, said contacts being constructed to initiate said are at a point inwardly spaced from the outer peripheral region of said disk and to provide forces for driving said arc across said major surface onto said outer peripheral region, a conductor electrically connected to said disk at a location spaced from the outer periphery of said disk for carrying current to and from said disk, said disk being slotted from its outer periphery inward in such a manner that the current path extending between said conductor and an arc terminal located at substantially any angular point on said outer peripheral region has a net component extending generally tangentially with respect to said periphery in the vicinity of said arc, said net tangential component extending from said arc in the same angular direction for substantially all angular positions of said are on
  • a pair of coacting contacts relatively movable from a position of engagement to a position of disengagement to establish a circuitinterrupting arc between said contacts, at least one of said contacts comprising a conductive disk having a major surface facing the other of said contacts, said contacts being constructed to initiate said are at a point inwardly spaced from the outer peripheral region of said disk and to provide forces for driving said arc across said major surface onto said outer peripheral region, means for producing arc-motion along said peripheral region comprising a plurality of slots formed in said disk, each slot having a mouth located at the outer periphery of said disk and each extending from said outer periphery inward, said slots having portions which extend in a generally tangential direction with respect to the adjacent periphery of said disk, the angular direction followed by the generally tangential portion of each of said slots in departing from the slot mouth being the same for each of said slots.
  • each of said slots extends generally tangentially at least to. a point closely adjacent the annular position of the mouth of an adjacent slot.
  • a pair of coacting contact disks each having a major surface facing the other disk and being relatively movable from a position of engagement to a position of disengagement to establish a circuit-interrupting are between said major surfaces, conductors respectively connected to each of said disks generally centrally thereof for carrying current to and from said disks, said major surfaces each having a generally centrally disposed recess surrounded by a projecting contact-making area that provides a radially-outwardly-acting loop circuit for current flowing through said contactmaking areas, each of said major surfaces also including an arc-running portion surrounding said contact-making area and adapted to receive a terminal of an are driven radially outward by said loop circuit upon contact-engagement, the arc-running portion of at least one of said disks being slotted from the outer periphery of said disk inward, the slot configuration being such that the current path extending between the conductor for said one disk and an arc terminal located at any point on said arc-running surface forms with said are a loop
  • a pair of coacting contact disks each having a major surface facing the other disk and being relatively movable from a position of engagement to a position of disengagement to establish a circuit-interrupting arc between said major surfaces, conductors respectively connected to each of said disks generally centrally thereof for carrying current to and from said disks, said major surfaces each having a generally centrally disposed recess surrounded by a projecting contact-making area that provides a radially-outwardly-acting loop circuit for current flowing through said contactmaking areas, each of said major surfaces also including an arc-running portion surrounding said contact-making area and adapted to receive a terminal of an are driven radially outward by said loop circuit upon contact-disengagement, the arc-running portion of at least one of said disks being slotted from the outer periphery of said disk inward, the slot configuration being such that the current path extending between the conductor for said one disk and an arc terminal located at any point on said arcrunning surface has a net component
  • a pair of coacting contacts relatively movable from a position of engagement to a position of disengagement to establish a circuit interrupting arc between said contacts, at least one of said contacts comprising a conductive disk having a major surface facing the other of said contacts, said contacts being constructed to initiate said arc at a point inwardly spaced from the outer peripheral region of said disk and to provide forces for driving said are across said major surface onto said outer peripheral region, means for producing arc motion repetitively along said peripheral region comprising at least one slot having a mouth located at the outer periphery of said disk and extending from said outerperipheryinward, said slot having a portion which 8 extends in an angular direction relative to the centerregion of said disk for at least about 360 degrees of said disk.
  • means for initiating a circuit-interrupting arc in a predetermined region disk structure providing an annular arc-running surface removed from said predetermined region, means for transferring a terminal of said are from said predetermined region to the outer peripheral region of said annular arcrunning surface, means for producing motion of said are terminal repetitively along said outer peripheral region comprising slot means extending from the outer periphery of said disk structure inwardly in such a manner that the current path extending through said disk structure to an arc terminal located at substantially any angular point on said outer peripheral region has a net component extending generally tangentially with respect to said periphery in the vicinity of said are terminal, said net tangential component extending from said are terminal in the same angular direction for substantially all angular positions of said arc on said peripheral region of said disk structure, whereby said are is caused to travel in one angular direction along said peripheral region.
  • means for initiating acircuit-interrupting arc in a predetermined region disk structure providing an annular arc-running surface removed from said predetermined region, means for transferring a terminal of said are from said predetermined region to the outer peripheral region of said annular arcrunning surface, means for producing motion of said arc terminal repetitively along said outer peripheral region comprising at least one slot having a mouth located at the outer periphery of said disk and extending from said outer periphery inward, said slot having a portion which extends in an annular direction relative to the central region of said disk for at least about 360 degrees of said disk.
  • an electric circuit-interrupter means for initiating a circuit-interrupting arc in a predetermined region, disk structure providing an annular arc-running surface removed from said predetermined region, means for transferring a terminal of said are from said predetermined region to the outer peripheral region of said annular arcrunning surface, means for producing motion of said are terminal along said outer peripheral region comprising a plurality of slots formed in said disk, each slot having a mouth located at the outer periphery of said disk and each extending from said outer periphery inward, said slots having portions which extend in a generally tangential direction with respect to the adjacent periphery of said disk, the angular direction followed by the generally tan gential portion of each of said slots in departing from the slot mouth being the same for each of said slots.
  • An arc-impelling electrode arrangement comprising conductive structure including a generally annular peripheral arc-running region along which an arc is adapted to be impelled, a conductor electrically connected to said structure for carrying current to and from said annular peripheral region, means for producing motion of said are repetitively along said annular peripheral region comprising at least one gap in said annular peripheral region extending from the outermost periphery of said annular arerunning region inwardly in such a manner that the current path between said conductor and an arc terminal located at any point on said annular peripheral region forms with said are a loop circuit having a magnetic effect exerting a net component of force on the are generally tangentially with respect to said periphery, said not tangential force component acting in the same angular direction for substantially all angular positions of said arc on said peripheral region and thereby causing said are to travel rapidly in one angular direction along said annular arcrunning region, the portions of said arc-running region on either side of any peripheral gap being sufficiently close together to enable said tang
  • interrupter is a vacuum-type circuit interrupter comprising an evacurated envelope in which said contacts are disposed.
  • interrupter 10 is a vacuurn-type circuit interrupter comprising an evacuated envelope in which said contacts are disposed.
  • interrupter is a vacuum-type circuit interrupter comprising an evacuated envelope in which said contacts are disposed.

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US730413A 1958-04-23 1958-04-23 Contact structure for an electric circuit interrupter Expired - Lifetime US2949520A (en)

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US730413A US2949520A (en) 1958-04-23 1958-04-23 Contact structure for an electric circuit interrupter
FR792644A FR1230660A (fr) 1958-04-23 1959-04-21 Perfectionnements aux contacts d'interrupteurs électriques

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Cited By (27)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3089936A (en) * 1960-02-23 1963-05-14 Gen Electric Contact structure for an electric circuit interrupter
US3156803A (en) * 1962-05-29 1964-11-10 Gen Electric Circuit interrupter having uniformly spaced spiral arc runners in a confined atmosphere for improved arc voltage control
US3178546A (en) * 1961-12-04 1965-04-13 Gen Electric Orifice structure for circuit interrupter of fluid blast type
US3182156A (en) * 1961-09-19 1965-05-04 Gen Electric Vacuum-type circuit interrupter
US3185797A (en) * 1962-07-17 1965-05-25 Gen Electric Vacuum-type circuit interrupter with improved arc splitting means
US3225167A (en) * 1964-03-16 1965-12-21 Gen Electric Vacuum circuit breaker with arc rotation contact means
US3280286A (en) * 1964-07-03 1966-10-18 Mc Graw Edison Co Vacuum-type circuit interrupter
US3283103A (en) * 1963-12-06 1966-11-01 Gen Electric Means for controlling phase relationship between flux and current in a vacuum interrupter
US3321599A (en) * 1966-04-20 1967-05-23 Gen Electric Vacuum-type circuit interrupter with means for reducing arc voltage during high instantaneous currents
US3327081A (en) * 1964-11-25 1967-06-20 Allis Chalmers Mfg Co Contact with high resistance material insert
US3372258A (en) * 1965-05-28 1968-03-05 Gen Electric Electric circuit interrupter of the vacuum type with arc-voltage control means for promoting arc transfer
DE1281529B (de) * 1965-08-23 1968-10-31 Heppenstall Co Mehrfachkontakt-Schalter
US3462572A (en) * 1966-10-03 1969-08-19 Gen Electric Vacuum type circuit interrupter having contacts provided with improved arcpropelling means
JPS51579Y1 (fr) * 1970-11-04 1976-01-09
JPS519145B1 (fr) * 1968-11-20 1976-03-24
US4028514A (en) * 1974-12-03 1977-06-07 General Electric Company High current vacuum circuit interrupter with beryllium contact
DE2856515A1 (de) * 1977-12-28 1979-07-12 Gemvac Kk Elektrodenanordnung fuer vakuumlastschalter
US4324960A (en) * 1978-08-25 1982-04-13 Mitsubishi Denki Kabushiki Kaisha Windmill-shaped electrode for vacuum circuit interrupter
US4415787A (en) * 1980-12-22 1983-11-15 Mitsubishi Denki Kabushiki Kaisha Vacuum interrupter
US4451813A (en) * 1981-06-10 1984-05-29 Japan Radio Company, Ltd. Vacuum fuse having magnetic flux generating means for moving arc
US4453054A (en) * 1981-08-26 1984-06-05 Siemens Aktiengesellschaft Contact apparatus for vacuum switches
US4553002A (en) * 1983-12-05 1985-11-12 Westinghouse Electric Corp. Axial magnetic field vacuum-type circuit interrupter
US4695688A (en) * 1986-03-24 1987-09-22 General Electric Company Electrical contact construction
WO2013048609A1 (fr) 2011-09-28 2013-04-04 Eaton Corporation Interrupteur à coupure dans le vide, et ensemble interrupteur hybride à cet effet
US9552941B1 (en) 2015-08-24 2017-01-24 Eaton Corporation Vacuum switching apparatus and electrical contact therefor
US9922777B1 (en) 2016-11-21 2018-03-20 Eaton Corporation Vacuum switching apparatus and electrical contact therefor
US10410813B1 (en) 2018-04-03 2019-09-10 Eaton Intelligent Power Limited Vacuum switching apparatus and electrical contact therefor

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1827516A (en) * 1924-12-11 1931-10-13 Condit Electrical Mfg Corp Electric switch
US1834306A (en) * 1925-05-29 1931-12-01 Condit Electrical Mfg Corp Circuit controlling device
US2027836A (en) * 1934-02-23 1936-01-14 Gen Electric Vacuum switch
US2051478A (en) * 1933-04-25 1936-08-18 Weldon O Hampton Arc extinguishing apparatus
US2140378A (en) * 1935-12-05 1938-12-13 Gen Electric Electric circuit interrupter
US2443650A (en) * 1944-09-27 1948-06-22 Westinghouse Electric Corp Circuit interrupter

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1827516A (en) * 1924-12-11 1931-10-13 Condit Electrical Mfg Corp Electric switch
US1834306A (en) * 1925-05-29 1931-12-01 Condit Electrical Mfg Corp Circuit controlling device
US2051478A (en) * 1933-04-25 1936-08-18 Weldon O Hampton Arc extinguishing apparatus
US2027836A (en) * 1934-02-23 1936-01-14 Gen Electric Vacuum switch
US2140378A (en) * 1935-12-05 1938-12-13 Gen Electric Electric circuit interrupter
US2443650A (en) * 1944-09-27 1948-06-22 Westinghouse Electric Corp Circuit interrupter

Cited By (29)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3089936A (en) * 1960-02-23 1963-05-14 Gen Electric Contact structure for an electric circuit interrupter
US3182156A (en) * 1961-09-19 1965-05-04 Gen Electric Vacuum-type circuit interrupter
US3178546A (en) * 1961-12-04 1965-04-13 Gen Electric Orifice structure for circuit interrupter of fluid blast type
US3156803A (en) * 1962-05-29 1964-11-10 Gen Electric Circuit interrupter having uniformly spaced spiral arc runners in a confined atmosphere for improved arc voltage control
US3185797A (en) * 1962-07-17 1965-05-25 Gen Electric Vacuum-type circuit interrupter with improved arc splitting means
US3283103A (en) * 1963-12-06 1966-11-01 Gen Electric Means for controlling phase relationship between flux and current in a vacuum interrupter
US3225167A (en) * 1964-03-16 1965-12-21 Gen Electric Vacuum circuit breaker with arc rotation contact means
US3280286A (en) * 1964-07-03 1966-10-18 Mc Graw Edison Co Vacuum-type circuit interrupter
US3327081A (en) * 1964-11-25 1967-06-20 Allis Chalmers Mfg Co Contact with high resistance material insert
US3372258A (en) * 1965-05-28 1968-03-05 Gen Electric Electric circuit interrupter of the vacuum type with arc-voltage control means for promoting arc transfer
DE1281529B (de) * 1965-08-23 1968-10-31 Heppenstall Co Mehrfachkontakt-Schalter
US3321599A (en) * 1966-04-20 1967-05-23 Gen Electric Vacuum-type circuit interrupter with means for reducing arc voltage during high instantaneous currents
US3462572A (en) * 1966-10-03 1969-08-19 Gen Electric Vacuum type circuit interrupter having contacts provided with improved arcpropelling means
JPS519145B1 (fr) * 1968-11-20 1976-03-24
JPS51579Y1 (fr) * 1970-11-04 1976-01-09
US4028514A (en) * 1974-12-03 1977-06-07 General Electric Company High current vacuum circuit interrupter with beryllium contact
DE2856515A1 (de) * 1977-12-28 1979-07-12 Gemvac Kk Elektrodenanordnung fuer vakuumlastschalter
US4324960A (en) * 1978-08-25 1982-04-13 Mitsubishi Denki Kabushiki Kaisha Windmill-shaped electrode for vacuum circuit interrupter
US4415787A (en) * 1980-12-22 1983-11-15 Mitsubishi Denki Kabushiki Kaisha Vacuum interrupter
US4451813A (en) * 1981-06-10 1984-05-29 Japan Radio Company, Ltd. Vacuum fuse having magnetic flux generating means for moving arc
US4453054A (en) * 1981-08-26 1984-06-05 Siemens Aktiengesellschaft Contact apparatus for vacuum switches
US4553002A (en) * 1983-12-05 1985-11-12 Westinghouse Electric Corp. Axial magnetic field vacuum-type circuit interrupter
US4695688A (en) * 1986-03-24 1987-09-22 General Electric Company Electrical contact construction
WO2013048609A1 (fr) 2011-09-28 2013-04-04 Eaton Corporation Interrupteur à coupure dans le vide, et ensemble interrupteur hybride à cet effet
US8653396B2 (en) 2011-09-28 2014-02-18 Eaton Corporation Vacuum switch and hybrid switch assembly therefor
US9552941B1 (en) 2015-08-24 2017-01-24 Eaton Corporation Vacuum switching apparatus and electrical contact therefor
US9922777B1 (en) 2016-11-21 2018-03-20 Eaton Corporation Vacuum switching apparatus and electrical contact therefor
US10490363B2 (en) 2016-11-21 2019-11-26 Eaton Intelligent Power Limited Vacuum switching apparatus and electrical contact therefor
US10410813B1 (en) 2018-04-03 2019-09-10 Eaton Intelligent Power Limited Vacuum switching apparatus and electrical contact therefor

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Publication number Publication date
FR1230660A (fr) 1960-09-19

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