US3823341A - Magnetic blast alternating current circuit interrupter comprising a rectifying arc extinction circuit - Google Patents

Magnetic blast alternating current circuit interrupter comprising a rectifying arc extinction circuit Download PDF

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Publication number
US3823341A
US3823341A US00344204A US34420473A US3823341A US 3823341 A US3823341 A US 3823341A US 00344204 A US00344204 A US 00344204A US 34420473 A US34420473 A US 34420473A US 3823341 A US3823341 A US 3823341A
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Prior art keywords
arc
current
circuit
circuit interrupter
electrode
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US00344204A
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English (en)
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Y Pelenc
G Bernard
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Merlin Gerin SA
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Merlin Gerin SA
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Assigned to CITICORP INDUSTRIAL CREDIT, INC., A DE CORP. reassignment CITICORP INDUSTRIAL CREDIT, INC., A DE CORP. SECURITY INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: SC ACQUISITION CORP.
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
    • H01H33/02—Details
    • H01H33/04—Means for extinguishing or preventing arc between current-carrying parts
    • H01H33/18—Means for extinguishing or preventing arc between current-carrying parts using blow-out magnet
    • H01H33/182—Means for extinguishing or preventing arc between current-carrying parts using blow-out magnet using permanent magnets
    • 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
    • H01H33/59—Circuit arrangements not adapted to a particular application of the switch and not otherwise provided for, e.g. for ensuring operation of the switch at a predetermined point in the ac cycle

Definitions

  • a terminal electrode of the shunt path is disposed adjacent the contacts and magnetic blast [52]
  • U S Cl 317/11 A 307/136 317/11 D means to blow the are against the electrode only when 317/75 the current has the instantaneous direction corre- [5]]
  • Fieid E H A 11 switch the current to the shunt path.
  • Means may be 6 provided to prevent the stagnation of the arc roots and to permit commutation of the current during any half- [56] References Cited cycle to a single or to a double shunt path.
  • This invention relates to alternating current circuit interrupters and more particularly to circuit interrupters comprising a rectifying arc extinction shunt path to which the current can be switched in order to prevent restriking of the are between the main contacts of the circuit interrupter.
  • a circuit interrupter of this kind is described in U.S. Pat. No. 3,633,069.
  • An arc is drawn between a pair of separating main contacts which are shunted by a circuit consisting of a series arrangement of rectifiers, such as semiconductor diodes, one of the rectifiers being a controlled rectifier, such as a thyristor.
  • Electronic trigger means responsive to the current to be interrupted are provided to fire the thyristor after separation of the main contacts shortly before current zero in the current half-cycle for which the rectifying shunt circuit is in conductive position relative to the instantaneous current so that the current flowing through the opening or fully opened main contacts and the are drawn therebetween is eventually commutated to the shunt path at a moment at which the current has decayed to no more than a small value.
  • the main contact structure of the described circuit interrupter should only be designed to withstand the arc current for a short while and that a heavy arc-extinction device can be dispensed with because of the operation of the shunt path which drains the current at the appropriate instant.
  • a second switch or another pair of contacts is connected in series with the first contacts between which an arc is drawn in order to isolate the rectifiers and the first contacts after the arc extinction.
  • the second switch should be in opened position at the moment of the final arc extinction and this condition can be obtained by opening both pairs of contacts at the same time.
  • a related object is to provide an interrupter in which the shunt path is inserted only during the current halfcycle for which the shunt path is in conductive position.
  • a more general object of the invention is to provide a circuit interrupter of more simple construction than the known interrupters, particularly with respect to the choice of rectifiers of the shunt path and to the design of the isolating device for the shunt path.
  • a further object of the invention is to provide a circuit interrupter in which the arc roots, pending final extinction of the are, are forced to travel on appropriately arranged arcing horns to prevent a stagnation of the roots and the resulting erosion of the contacts.
  • Another object of the invention is to provide a circuit interrupter in which the current is commutated to a shunt path during any current half-cycle.
  • FIG. 1 shows the wave form of a cycle of the current flowing through a circuit interrupter according to the invention, and of the arc voltage;
  • FIG. 2 and FIG. 3 are schematic representations of two embodiments of the invention.
  • FIG. 4 shows the main contact zone of a further embodiment
  • FIG. 5 is a schematic elevational representation of an embodiment including means to propel the arc roots along arcing horns;
  • FIG. 6 is a view taken along line VI-VI of FIG. 5, the arcing horns of the other contact being of identical configuration as seen from the same side;
  • FIG. 7 is an elevational side view taken along the line .Vll -Vll of FIG. 8 of another arrangement of arcing horns according to the invention.
  • FIG. 8 is a cross-sectional view taken along line VIII- VIII of FIG. 7, the configuration of the arcing horns of the right hand side contact being substantially identical with the configuration shown in FIG. 7;
  • FIG. 9 is a partial elevational side view of another arrangement of concentric arcing horns.
  • FIG. 10 is a partial cross sectional view taken along line X-X of FIG. 9;
  • FIGS. 11 and 12 show another embodiment in views similar to FIGS. 7 and 8, respectively;
  • FIG. 13 is a view similar to FIG. 3 of an embodiment having two rectifying shunt paths
  • FIGS. 14 and 15 show further embodiments as viewed in FIG. 3 having a single shunt path which may be inserted at any current half-cycle.
  • An auxiliary or shunt circuit 16 comprises a series connection of like poled rectifiers 18, which may be semiconductor diodes, one of which, 20, being a controlled rectifier, such as a thyristor, or SCR having a control gate 22.
  • the gate 22 is controlled by a trigger device 23 which is in turn connected to a current sensing device 25 inserted in the main circuit 14 and to an appropriate volt age supply point 27 of the shunt path 16.
  • the righthand terminal of the shunt path is connected to the main circuit, as shown, and the left-hand terminal comprises an electrode 34, positioned in the region of the main contact pair 12.
  • the separable contacts 28 and 30 form the isolating contact pair 10 and the separable contacts 24 and 26 form the main arcing contacts which are shown in the final open-circuit position.
  • the movable contacts shown are sliding contacts but it is a matter of course that another type of contacts may be retained, one or both of which being movable. While the contacts shown are simple pressure or butt contacts more sophisticated contact forms may clearly be adopted.
  • a unidirectional magnetic field is produced, as schematically shown at 36. In the event, the magnetic field issues from the plane of FIG.
  • the magnetic field 36 may be produced by a permanent magnet or by an electromagnet 37 (FIG. 3) fed by an independent direct current source (not shown) or energized by a rectified current derived from the very current flowing through the circuit interrupter.
  • the device shown in FIG. 2 operates as follows:
  • the movable contacts 26 and 30 of the contact pairs 10 and 12 are opened simultaneously in the direction of the arrows by random-time opening means (not shown) to draw an are between the contacts 28 and 30 and another are, 38, between the contacts 24 and 26.
  • the opening may take place at any instant in the current cycle it will be assumed that in the event the opening is operated somewhere at the beginning of the half-cycle A (FIG. 1) of the current for which the rectifiers 18 are in non-conductive position, that is at a moment at which the instantaneous current flows in the direction opposite to the direction of arrow I of FIG. 2.
  • the magnetic field 36 urges the are 38 upwards, as viewed in FIG. 2, that is away from the electrode 34 which remains in a non-ionized region.
  • the arc current has decayed to zero so that the arc volt age shown in dashed lines passes through zero too.
  • This electric contact between the electrode 34 and the arc 38 takes place at a time at which the arc voltage has reached a normal value, well below the restriking top U and the number of series-connected rectifiers 18 is chosen to withstand the arc voltage until the extinction thereof.
  • the shunt path 16 is now connected through the electrode 34 and the are 38 to the main contact 24 of the main circuit 14 but no current can as yet be switched to the shunt path as the controlled rectifier 20 is still in blocked condition.
  • the triggering device 23 fires the controlled rectifier 20 which turns ON instantly as expounded in more detail in the above cited US. Patent.
  • a resistor 50 of appropriate high resistance may be connected between the electrode 34 and the main circuit 14, as shown in dashed lines in FIG. 2, in order to damp out possible transient overvoltage pulses due for instance to a too sudden contact between the arc and the electrode 34.
  • FIG. 3 shows how the contact pairs 10 and 12 can be merged into a single pair comprising in the shown embodiment a movable sliding contact 30 and a stationary contact 26.
  • the operation of this device is similar to the operation of the device of FIG. 2. Suffice it to say that the partial deionization of the interval between the contacts 30, 26 is sufficiently advanced at current zero at the end of half-cycle B to prevent restriking of the arc across the interval 32 in the next current half-cycle.
  • the deionized interval between the electrode 34 and the contact 30 isolates the shunt circuit from the main circuit after final arc extinction without intervention of a supplementary switch such as contact pair 10 in FIG.
  • FIG. 4 shows an embodiment in which the main contacts 30, 26 are equipped with arcing horns 40, 42,
  • the electrode 34 may be shaped as a screen to prevent a detrimental ionization of the interval between electrode 34 and contact 42 after extinction of the arc 46 by the still burning are 44.
  • a screen 48 of insulating material may prolong the electrode 34 to further impede this effect.
  • FIGS. 5 and 6 show a circuit interrupter having the same general electric connection diagram as the apparatus represented in FIG. 3.
  • the arcing horns 40, 42 however have a different configuration to prevent the arc roots from dwelling on the same spot causing thereby a detrimental erosion. Both horns being of identical shape, as viewed from the same side, only one of them, arcing horn 40, will now be described.
  • the arcing horn 40 comprises a ring-shaped, generally circular end portion 52 connected by a tangential, generally vertical leg 54 to the region immediately adjacent the contact 30 but separated therefrom by a small gap 55. Another gap 56 separates the extreme end of the horn 40 from the vertical leg 54.
  • the magnetic field 36 tending to propel the arc in the proper direction is produced by a number of permanent magnets 58, 59, 60, 62 which act on the left are root (as viewed in FIG. 5), similar conditions existing at the other horn 42. As a matter of fact, it suffices to act on the arc roots in order to propel the entire arc in the appropriate direction. As viewed in FIG. 6, all permanent magnets have upper pole faces of the polarity indicated on FIG.
  • Two further upper arcing horns 64, 66 are arranged in radial symmetry with respect to horns 40, 42 to guide the arc roots upwardly, away from contacts and 26, during the current half-cycle for which the diodes 18, 20 are in nonconductive position.
  • Parts 70 and 68 correspond to parts 54 and 52 of horn gaps 65 and 78 to gaps 55 and 56, and magnets 74, 75, 72 and 76 to magnets 58, 59, 60 and 62, respectively, the polarity of the magnets being of course inverted.
  • FIGS. 5 and 6 operates as follows:
  • the current sense being inverted the roots are now propelled in the direction opposite to the direction of the arrow shown in horn 64 so that the roots jump rapidly over the gap 65, the contact 30 and the gap 55 to travel along the leg 54 and the circular path 52 in the direction of the arrow 61.
  • the gap 78 may also be effective to enhance the movement of the root initially attached to the arcing horn portion 68 in the right direction.
  • the middle portion of the arc engages the electrode 34 which may also comprise a circular path although a dwelling of the intermediate arc roots on electrode 34 is practically excluded by the continuous motion of the end roots of the are travelling along the circular paths 52.
  • the final arc extinction proceeds as explained hereinabove with reference to FIG. 2.
  • FIGS. 6 and 8 show an embodiment in which the closed loop portions of the arcing horns are concentric.
  • the movable contact 38 is now tubular and surrounds a permanent magnet 82 having a north pole directed towards the stationary contact 84 which is also ringshaped to surround a permanent magnet 86 of opposite polarity.
  • a coplanar outer annular arc root path 88, 90 is also associated with the contacts 30 and 84, respectively, to guide the arc roots during the current halfcycle for which the shunt path is conductive.
  • Transverse, more or less radial extensions 92, 94 of the semicircular segments 88 and 90 extend towards the inner paths and are separated therefrom by gaps 96.
  • the inner semi-circular segments 80 have transverse, more or less radial extensions 98, I80 directed towards the outer paths 88, 90, from which they are separated by gaps 102.
  • the segments 88 and the segments 80 are separated by air gaps 106.
  • a ring of permanent magnets 184 surround the outer paths 88, and cooperate with the central permanent magnet of opposite polarity in a manner similar to the arrangement shown in FIG. 6, the polarities being as shown in FIGS. 7 and 8.
  • Permanent magnets 108 and 1110 are associated with the legs 92, 94, 98 and 108 to cause the are roots to travel along these legs in the appropriate direction.
  • FIGS. 7 and 8 The operation of the device of FIGS. 7 and 8 is similar to that of FIGS. and 6.
  • the left-hand arc root of the arc is transferred to the inner circular path 80 as soon as the movable contact 30 is withdrawn therefrom.
  • the are root starts immediately to rotate along the path 80 in the direction of the arrow, jumping across the gaps 106, as long as the direction of the current corresponds to the non-conductive relative position of shunt path 16.
  • the arc roots cannot escape along the extensions 98, 100 because of the magnetic field produced by magnets 108, 110.
  • the effective polarity of permanent magnet 86 is opposite to the polarity of magnet 82 so that the arc roots attached to the inner paths 80 and 84 rotate in opposite directions.
  • a rotation in the same direction may be obtained by inversion of the polarity of one of the magnets (and of the corresponding outer ring magnets).
  • the arc roots start to move outwardly along the legs 98 or 100 to travel along the outer ring-shaped paths 88, 90 whereby the left-hand arc root moves in the direction of the arrow shown in FIG. 7 as a result of the action of magnets 104 and 82.
  • the middle part of the arc engages the annular discshaped electrode 34 and the arc extinction proceeds then as has been explained herein above.
  • the legs 92, 94 permit the arc roots during the next half cycle to return to the inner path 80.
  • the gaps 96, 102 and 106 sustain the action ofthe magnetic field and constitute barriers preventing the arc from moving in the wrong direction.
  • FIGS. 9 and show a modified form of the embodiment of FIGS. 7 and 8 in a partial representation.
  • the movable contact 30 constitutes now itself the circular inner path for the arc root during the current half-cycle for which the rectifiers of the shunt path are in nonconductive position.
  • the radial legs 112 are regularly spaced apart along the circumference of the outer arcing horn portion 88 of which they constitute radial inner extensions. Each extension may have a truncated conical shape, as shown, and is sandwiched by a pair of permanent magnets 114 disposed with opposite polarities and which protrude from the arc root surface of the radial legs 112.
  • the legs are, as all the other parts of the arcing horn portions of conductive material and the permanent magnets are magnetically connected by yoke portions 116 of ferromagnetic material to increase the effective magnetic field along the arc root faces of the legs 112.
  • Gaps 118 separate the inner end portions of the legs 112 from the outer surface of the tubular contact member 30 which surrounds again, as in the embodiment shown in FIGS. 7 and 8, the permanent magnet 82.
  • the operation of this embodiment is similar to the operation of the device of FIGS. 7 and 8.
  • the left-hand arc root rotates on the inner path 30 in the direction of the arrow shown in FIG. 9 as long as the current flows in a direction excluding its transfer to the shunt path.
  • the root moves along one of the legs 112 towards the outer ring 88 along which the arc root travels in the direction of the shown arrow.
  • An inversion of the direction of the current in the other sense causes the arc root to move inwardly along one of the legs 112.
  • FIGS. 11 and 12 show an embodiment in which the different guide parts for the arc roots are arranged in a coaxial dome-shaped manner.
  • the circular end portion of the tubular movable contact 30 cooperates with an annular stationary contact 84 and permanent magnets 82 and 86 are disposed within the contacts, respectively.
  • the polarities of the magnets are chosen, as shown, to cause a rotation of the arc roots in the direction of the arrow shown on FIG. 12.
  • the outer paths are formed by coaxial cylindrical surfaces 120 and 122 whereby the latter may be constitued by the outer surface of the tubular contact 30, as shown.
  • the electrode 34 itself of cylindrical form, is inserted between the cylindrical surfaces 120 and 122 and permanent magnets 124 producing a rotation of the outer arc root in the direction of the arrow are disposed on both sides of the outer path 120, as shown.
  • Transverse legs 126 connect the inner path 84 to the outer path 120 to permit a transfer of the corresponding arc root in both directions under the action of permanent magnets 128.
  • FIGS. 13 to 15 permit a switching of the current flowing through the main circuit of the circuit interrupter to a shunt path during any current half-cycle, whatever may be the instantaneous current direction.
  • Corresponding duplicate parts are designated in these FIGURES by the same reference character as the parent parts but a prime mark is affixed to the reference character of the duplicate part.
  • a second auxiliary or shunt circuit 16 of identical composition as the shunt circuit 16 has its right terminal connected to the main circuit while the left terminal comprises an electrode 34' which is located in the region of the contacts 30 and 26 symmetrically to the other electrode 34 with respect to the contacts.
  • the unidirectional magnetic field 36 blasts the arc upwardly against the electrode 34 if the instantaneous current flows in the direction of the arrow 1' and downwardly against the electrode 34 if the current flows in the opposite direction indicated by the arrow I.
  • one and only one of the shunt circuits 16, 16' is thus inserted and a subsequent triggering of the corresponding thyristor 20 or 20' causes the final interruption as explained hereinabove.
  • each contact is associated with a pair of oppositely directed arcing horns 40, 40 and 42, 42', respectively.
  • a pair of electrodes 130, 132 connected by conductors 136 and 142 to the terminals 134 and 140, respectively, of the auxiliary circuit 16 is disposed between the end portion of horns 40, 42 and a similar pair of electrodes 132', cross-connected by conductor 144 and 138 to the terminals and 134, respectively, is disposed between the arcing horns 40' and 42.
  • the terminal 140 of the shunt circuit 16 is connected to an upper electrode 34 located above the contacts 30, 26 and to asecond upper electrode 152' positioned above the contacts 30' and 26, substantially symmetrically with respect to electrodes 34 and 152, respectively. It will be apparent that the arcs drawn between the contacts 30 and 26 and 30' and 26' will be blasted by the magnetic fields'36 and 36 in the direction of the electrodes 34' and 152, respectively, if the current immediately after opening of the contacts 30, 26 and 30', 26 flows in the direction of the arrow I. If the current flows in the opposite sense,
  • the arcs are blasted against electrodes 34 and 152'.
  • the shunt path 16 is in the right position to receive the arc current which is eventually interrupted at the end of the half-cycle as set forth hereinabove.
  • An alternating current circuit interrupter comprismg:
  • a main circuit including separable contact means adapted to draw an arc
  • auxiliary circuit having series connected like poled semiconductor rectifier means including controlled rectifier means, said auxiliary circuit comprising terminal electrode means disposed adjacent said contact means;
  • magnetic blast means producing a magnetic field in the region of said are and tending tomagnetically blast said are against said electrode means only during the current half-cycle for which said rectifier means, as connected by said electrode means, are in conducting position for the current flowing through said circuit interrupter;
  • said contact means comprising-a pair of separable contacts
  • said electrode means comprising an electrode disposed substantially in the median plane of said contacts in the open circuit position thereof.
  • a circuit interrupter according to claim 3, said contacts comprising arcing horns to enhance the movement of said are in the direction of said electrode.
  • said magnetic blast means comprising an electromagnet energized by the current flowing through said circuit interrupter.
  • said magentic blast means further comprising rectifier means to rectify the energizing current of said electromagnet.
  • said auxiliary circuit comprising a resistor to damp the transient voltage applied to said rectifier means.
  • a circuit interrupter further comprising arcing horn means of conducting material to guide the roots of said arc, said arcing horn means having a first portion providing for at least one root of said arc at least one path extending from said contact means in the general direction of said electrode means, and a second portion providing for said roots paths extending from said contact means and which are spatially arranged in such a manner relative to said electrode means as to keep the are having the roots thereof dwelling on said second portion away from said electrode means, said magnetic blast means being adapted to propel said at least one root along said first portion during said current half-cycle, and said roots along said second portion during the current half-cycle of opposite polarity.
  • At least one of said first and second portions of said arcing horn means comprising a closed loop path associated with further magnetic blast means tending to cause the corresponding root of said arc to move continuously along said closed loop path during the corresponding current half-cycle.
  • a circuit interrupter according to claim 10, said closed loop path having a gap tending to prevent the dwelling'of the corresponding root on said closed loop path after inversion of the direction of the current.
  • said contact means comprising a pair of separable contacts, each contact being associated with a pair of arcing horns directed away from said contact in opposite directions and ending each in a semi-closed loop portion, said further magnetic blast means comprising for each horn permanent magnets surrounded by and surrounding the loop portion thereof, respectively.
  • said first and second portions comprising an outer and an inner annular path, respectively, arranged substantially concentrically around said contacts, said electrode means comprising an annular electrode positioned outwardly of said inner path, said arcing horn means comprising at least one guide leg extending transversely between said paths to permit the transfer of the corresponding arc root between said annular paths.
  • each contact being associated with a pair of coplanar concentric annular arcing horn portions, each arcing horn portion being divided into a plurality of circle segments ending in a coplanar leg transversely directed towards the other horn portion and separated therefrom by a gap.
  • said magnetic blast means comprising permanent magnets arranged adjacent said leg and adapted to propel an arc root attached to said leg in the appropriate direction therealong taking into account the instantaneous direction of the arc current, said further magnetic blast means comprising permanent magnets arranged concentrically adjacent said annular arcing horn portions, respectively, to cause an arc root attached to said horn portions to move therealong.
  • said contact means comprising a pair of separable contacts
  • said electrode means comprising electrodes disposed on both sides of the zone in which said arc is initially drawn, said electrodes being positioned and connected to said auxiliary circuit in a manner such that said current flowing through said main circuit can be commutated to said auxiliary circuit for both directions of said current pursuant to electric contact of said arc with the electrodes disposed on one side or the other of said zone under the action of said magnetic field.
  • said contact means comprising two series connected pairs of separable contacts adapted to draw an arc therebetween, said electrode means comprising electrodes disposed adjacent each of said pairs of contacts, said magnetic blast means producing a magnetic field in the region of each arc and tending to magnetically blast both arcs against predetermined electrodes according to the instantaneous direction of said current, said electrodes being positioned and connected to said auxiliary circuit in such a manner that the current flowing through said main circuit can be commutated to said auxiliary circuit for both directions of said current pursuant to electric contact of said arcs with said electrodes.
  • An alternating current circuit interrupter comprising:
  • a main circuit including a pair of separable contacts adapted to draw an arc therebetween;
  • magnetic blast means to produce a magnetic field in the region of said arc and tending to magnetically blast said are against one or the other of said electrodes according to the instantaneous direction of the arc current;
  • auxiliary circuits having each series connected like poled semiconductor rectifier means including controlled rectifier means, said auxiliary circuits being connected to said electrodes, respectively, and to said main circuit in such a manner that each auxiliary circuit is in conducting position for the instantaneous current flowing through said circuit interrupter as the electrode thereof is in electric contact with said arc pursuant to the action of said magnetic blast means;
  • An alternating current circuit interrupter comprising:
  • a main circuit including separable contact means adapted to draw an arc
  • magnetic blast means producing a unidirectional magnetic field in the region of said arc to magnetically blast said arc according to the instantaneous direction of the arc current in a first direction substantially transverse of the initial direction of said are or in a direction opposed to said first direction;
  • a rectifying shunt circuit having terminal electrode means disposed adjacent said contact means in such a manner that the current flowing through said main circuit can be commutated to said shunt circuit pursuant to electric contact of said are with said electrode means only if said current has a direction corresponding to the conducting sense of said rectifying circuit.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Arc-Extinguishing Devices That Are Switches (AREA)
  • Switches That Are Operated By Magnetic Or Electric Fields (AREA)
  • Power Conversion In General (AREA)
US00344204A 1972-03-28 1973-03-23 Magnetic blast alternating current circuit interrupter comprising a rectifying arc extinction circuit Expired - Lifetime US3823341A (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR7210942A FR2177531B1 (zh) 1972-03-28 1972-03-28
FR7245142A FR2210813B2 (zh) 1972-03-28 1972-12-18
FR7304228A FR2216663B2 (zh) 1972-03-28 1973-02-06

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US3823341A true US3823341A (en) 1974-07-09

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US00344204A Expired - Lifetime US3823341A (en) 1972-03-28 1973-03-23 Magnetic blast alternating current circuit interrupter comprising a rectifying arc extinction circuit

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US (1) US3823341A (zh)
JP (1) JPS4914981A (zh)
BE (1) BE797386A (zh)
CA (1) CA980001A (zh)
CH (1) CH576702A5 (zh)
DE (1) DE2315396A1 (zh)
ES (1) ES413081A1 (zh)
FR (3) FR2177531B1 (zh)
GB (1) GB1408208A (zh)
IT (1) IT980710B (zh)
NL (1) NL7304052A (zh)
SE (1) SE379887B (zh)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3968381A (en) * 1974-11-25 1976-07-06 The Garrett Corporation Arc type switch

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN85106584B (zh) * 1985-07-29 1987-01-14 东北工学院 三辊楔横轧轴件的方法及专用装置

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1220582A (fr) * 1958-04-16 1960-05-25 Vickers Electrical Co Ltd Perfectionnements apportés aux dispositifs d'extinction des arcs électriques
CH436419A (de) * 1966-05-26 1967-05-31 Bbc Brown Boveri & Cie Leistungsschalter mit bei der Abschaltung entgegengesetzt geschalteten, je mindestens aus einer Diode bestehenden Diodenkreisen
US3436597A (en) * 1967-08-24 1969-04-01 Gen Electric Electric circuit breaker with assisted arc interruption

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3968381A (en) * 1974-11-25 1976-07-06 The Garrett Corporation Arc type switch

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FR2210813B2 (zh) 1977-07-29
ES413081A1 (es) 1976-01-01
GB1408208A (en) 1975-10-01
BE797386A (fr) 1973-07-16
FR2216663A2 (zh) 1974-08-30
CA980001A (en) 1975-12-16
FR2177531A1 (zh) 1973-11-09
FR2177531B1 (zh) 1974-08-02
FR2210813A2 (zh) 1974-07-12
DE2315396A1 (de) 1973-10-25
SE379887B (zh) 1975-10-20
IT980710B (it) 1974-10-10
FR2216663B2 (zh) 1976-09-10
CH576702A5 (zh) 1976-06-15
JPS4914981A (zh) 1974-02-08
NL7304052A (zh) 1973-10-02

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