US3418440A - Gas-blast circuit breaker - Google Patents

Gas-blast circuit breaker Download PDF

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Publication number
US3418440A
US3418440A US487206A US48720665A US3418440A US 3418440 A US3418440 A US 3418440A US 487206 A US487206 A US 487206A US 48720665 A US48720665 A US 48720665A US 3418440 A US3418440 A US 3418440A
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United States
Prior art keywords
electrode
blast
arc
upstream
current
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
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US487206A
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English (en)
Inventor
John W Beatty
Mcneir George
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General Electric Co
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General Electric Co
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Filing date
Publication date
Application filed by General Electric Co filed Critical General Electric Co
Priority to US487206A priority Critical patent/US3418440A/en
Priority to GB31218/66A priority patent/GB1086546A/en
Priority to ES0330090A priority patent/ES330090A1/es
Priority to FR74272A priority patent/FR1491644A/fr
Priority to SE12184/66A priority patent/SE330047B/xx
Priority to CH1319766A priority patent/CH446478A/de
Priority to JP6071266A priority patent/JPS4213649B1/ja
Application granted granted Critical
Publication of US3418440A publication Critical patent/US3418440A/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
    • H01H33/70—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid
    • H01H33/86—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid the flow of arc-extinguishing fluid under pressure from the contact space being controlled by a valve
    • 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
    • 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
    • H01H33/70—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid
    • H01H33/7015—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid characterised by flow directing elements associated with contacts
    • H01H33/7069—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid characterised by flow directing elements associated with contacts characterised by special dielectric or insulating properties or by special electric or magnetic field control properties

Definitions

  • This invention relates to a gas-blast circuit breaker and, more particularly, relates to means for improving the interrupting ability of such a circuit breaker.
  • the usual gas-blast circuit breaker comprises means for establishing an electric arc across a gap between two electrodes and means for directing a high velocity blast of gas into the arcing region.
  • the purpose of the gas blast is to cool the arc and to scavenge the arcing region of arcing products so as to increase the rate at which dielectric strength is built up across the gap when the current Zero point is reached.
  • the spacing between the electrodes of an open circuit breaker must be relatively great in order to meet the severe insulation requirements these high voltages impose. It may seem that it should not be a diflicult matter to provide the relatively great inter-electrode spacing required; but when the required spacing has ⁇ been provided, an impairment in current-interrupting ability has been noted. In other words, the inter-electrode spacing most favorable for interruption has been found to be substantially shorter than that required to withstand the extra high voltages.
  • An object of the present invention is to provide a new and improved gas-blast circuit breaker in which the relatively great inter-electrode spacing required for extra high voltage applications is provided without detracting from the ability that the breaker has to interrupt currents at shorter inter-electrode spacings.
  • One of these electrodes is mounted for movement to and from the other electrode.
  • Actuating means responsive to current through the movable electrode is provided for moving the movable electrode toward the other electrode when the current is relatively high. When the current falls below a predetermined level, the movable electrode is quickly returned to its normal position to reestablish the relatively large inter-electrode spacing originally present.
  • the interrupting ability of a gas blast circuit breaker can be improved by rotating one of the terminals of the arc during the interrupting period. This can be done by providing a radial magnetic field that extends transversely of the arc.
  • Another object of our invention is to provide means capable of performing the dual function of (l) producing the desired magnetic field for arc rotation and (2) producing the force required for shortening the inter-electrode gap during high current interruptions.
  • a common type of gas-blast circuit breaker is the axialblast type breaker.
  • the blast of gas flows axially of the arc, first passing the one electrode which is normally referred to as the upstream electrode and then passing the other electrode, which is referred to as the downstream electrode. It has been found that the interrupting capacity of the axial-blast type breaker can be improved by providing an auxiliary blast passage in the upstream electrode, through which an auxiliary blast is directed during interruption.
  • Another object of our invention is to provide new and improved means for controlling the ow of gas through this auxiliary blast passage.
  • Still another object is to control this auxiliary blast with a valve actuated by force derived from the same means that is used for effecting the above-described control of the position of the movable electrode.
  • auxiliary blast passage leading through the upstream electrode. Flow through this passage is controlled by a normally-closed auxiliary blast valve.
  • the normally-closed auxiliary blast valve is controlled by current responsive means which opens the auxiliary blast valve in response to current through the upstream electrode exceeding a predetermined Value.
  • the movable valve element of the auxiliary blast valve is coupled to the previously-described movable electrode, and both the movable electrode and the auxiliary blast valve are operated by the current responsive valve-control means.
  • the current responsive valve-control means drives the movable electrode into its shorter-gap, preferred interrupting, position and also drives the movable valve element into a position that opens the auxiliary blast valve.
  • FIG. l is a view, partly in section, of a gas-blast circuit breaker embodying one form of our invention.
  • FIG. 2 is -an enlarged sectional view of a portion of a circuit breaker of FIG. 1. The parts are shown in the positions they occupy when the circuit breaker is closed.
  • FIG. 3 illustrates the parts of FIG. 2 during a high current interruption.
  • FIG. 4 is a sectional view taken along the line 4-4 of FIG. 3.
  • FIG. 5 is a sectional view taken along the line 5-5 of FIG. 3.
  • FIG. 6 is an enlarged exploded view of a portion of FIG. 2.
  • FIG. 7 is a sectional view similar to that of FIG. 2 but showing a modified form of the invention.
  • the circuit interrupter shown therein is of the sustained-pressure, gas-blast type described and claimed in U.S. Patent 2,783,338 to Beatty assigned to the assignee of the present invention. Only those parts of the interrupter that are considered necessary to provide an understanding of the present invention have been shown in FIG. l. In this respect, only the right hand portion of the interrupter has been shown in section inasmuch as the interrupter is generally symmetrical with respect to a vertical plane and the left hand portion is substantially identical to the right hand portion. As described in detail in my above-mentioned patent, the interrupter comprises a casing 12 which is normally filled with pressurized gas to define an interrupting chamber 11.
  • a pair of relatively movable contacts 14 and 16 which can be separated to draw an arc within the pressurized gas within the chamber 11.
  • the contact 14 is relatively stationary, whereas the other contact 16 is mounted for pivotal motion about a fixed, current-carrying pivot 18.
  • the movable contact 16 is driven clockwise about the pivot 18 from its solid-line closed position of FIG. l, an arc is established in the region where the contacts part.
  • the movable contact 16 is shown by dotted lines in FIG. 1 in a partially-open position through which it passes during a circuit-interrupting operation after having established an arc.
  • the movable Contact 16 is supported by means of its current-carrying pivot 18 on a conductive bracket 19 that is preferably formed integral with a stationary cylinder 32.
  • the cylinder 32 .at its lower end is suitably supported from a generally cylindrical casting 33.
  • the cylindrical casting 33 For producing a gas blast to aid in extinguishing the a-rc, the cylindrical casting 33 contains a normally-closed exhaust passage 36 leading from the interrupting chamber 11 to the surrounding atmosphere.
  • the casting 33 at its upper end is provided with a tubular nozzle-type electrode 38 having an orifice portion 39 at its outer end defining an inlet 37 to the exhaust passage 36.
  • This inlet 37 is referred to hereinafter as the perennial opening.
  • the flow of arc-extinguishing gas through the tubular nozzle 38 and the exhaust passage 36 is controlled by means of a cy,
  • This blast valve member 40 located at the outer, or lower, end of the exhaust passage 36. This blast valve member 40 normally occupies a solid-line, closed position wherein its lower end face sealingly abuts against a stationary valve seat 34 carried by the exhaust casting 33.
  • the movable blast valve member 40 is driven upwardly from its solid line, closed position of FIG. l through a partially open intermediate position shown in dotted lines in FIG. l. Opening of the valve member 40 allows pressurized gas in the chamber 11 to ow at high speed through the orifice opening 37 and nozzle 38 and out the exhaust passageway 36 past the valve member 40 to atmosphere, as indicated by ⁇ the arrows B of FIG. l. The manner in which the gas blast acts to extinguish the arc will soon be described in greater detail.
  • the cylindrical valve member 40 surrounds a projecting tubular support 41 upon which the valve member 40 is smoothly slidable.
  • the tubular support 41 is fixed to the casting 33, preferably, by means of bolts (not shown) clamping the flange 41a to the top of casting 33.
  • a compression spring 44 positioned between the movable valve member 40 and the lower end of support 41 tends to hold the valve member 40 in its closed position against the valve seat 34.
  • a protective metallic tube ⁇ 43 is positioned about these parts and is suitably secured to the support 41.
  • a downstream probe or electrode 45 Secured to the outer surface of this tube is a downstream probe or electrode 45, preferably of a refractory metal, which projects radially from the tube 43 and transversely into the path of the gas blast flowing through the passageway 36.
  • the downstream electrode is preferably constructed as shown and claimed in Patent No.
  • This mechanism 5 0 is preferably constructed in the manner disclosed and claimed in the aforementioned Beatty Patent 2,783,338, and its de- :tails form no part of the present invention.
  • this mechanism i() comprises a valve-controlling piston 51 and a contact-controlling piston 52 mounted within the cylinder 32.
  • the valve-controlling piston 51 is coupled to the movable valve member 40 through a piston rod 54 suitably clamped to the valve member 40.
  • the contactcontrolling piston 52 is connected to the movable contact 16 through a piston rod 58 and a cross head 59 secured to the piston rod.
  • Opening movement of the contact member 16 first establishes an arc between the ends of the contacts 14 and 16. Shortly thereafter, however, the blast of gas which has been flowing through the tone opening 37, as indicated by the arrows B, forces the upstream terminal of the are on to an upstream arcing electrode 70, which is electrically connected to the stationary contact 14. As opening motion of them ovable contact 16 continues, the gas blast forces the downstream terminal of the are to transfer from them ovable contact 16 to orifice structure 39. which is electrically connected to the movable contact 16. The gas blast then impels the downstream terminal of the arc through the orifice opening 37 and nozzle 38 on to the upper end of the protective metallic tube 43.
  • the gas blast drives the downstream arc terminal downwardly and into the previously-described stagnation region adjacent the upstream surface 48 of the electrode 45.
  • the arc then occupies the position generally shown at 46 with its upstream terminal on the upstream electrode and its downstream terminal on the n downstream electrode 45.
  • the arc is in this posiscavenge the arcing region of arcing products, thus preventing reignition thereof at an early current zero.
  • the blast valve 40 After interruption is completed, the blast valve 40 is returned in a downward direction to its solid line position of FIG. 1, thereby terminating the arc-extinguishing blast.
  • This blast Valve-closing is effected by supplying pressurized air to the space between the two pistons 52 and 61. This pressurized air holds the movable contact 16 in its open position when the blast valve has closed.
  • the stationary contact 14 and its -associated upstream electrode 70 are supported on a hollow conductive stud 60.
  • This stud 60 also serves to carry :current to and from the stationary contact 14 and the upstream electrode 70.
  • the hollow stud 60 extends through the wall of the casing 12 and is supported on the casing 12 by tubular porcelain sleeves 62 and 64 surrounding the stud. These porcelain sleeves 62 and 64 together with the stud 60 constitute a terminal bushing of a generally conventional design.
  • a tubular adapter 65 For supporting the upstream electrode 70 on the stud 60, we provide a tubular adapter 65 that is suitably attached to the stud 60. Bolted to the adapter 65 is a tubular valve casing 66, to Iwhich is secured a tubular guide member 67 (FIG. 2). These tubular parts 66 and 67 are joined together by a suitable threaded joint 68. Attached to the upstream electrode 70 is a centrally located tubular valve stern 72 that is slid-ably supported within the guide member 67. Suitable slide bearings 73 of insulating material are provided between the stationary guide member 67 and the valve stern 72 to permit longitudinal movement of the stem within the guide member 67 under certain conditions soon to ⁇ be described.
  • the upstream electrode 70 is a cup-shaped Imember that comprises a semi-toroidal forward portion 74 and a tubular wall portion 76 joined to the semi-toroidal forward portion ⁇ at its outer periphery.
  • an annular radially-inwardly projecting flange 78 is provided at the rear end of the tubular wall portion 76. This flange 78 is detachably connected to the tubular wall portion, as by screws
  • a helically wound spring 80 encircling the tubular guide member 67.
  • This spring 80 is electrically and mechanically connected at its forward end to a flange S2 projecting radially outward from the guide member 67 and integral therewith.
  • the spring 80 is electrically and mechanically connected at its rear end to the inwardly projecting flange 78 on the electrode 70.
  • This helically wound spring 80V is preferably made of a copper-beryllium alloy, and all of its turns except those at its extreme ends are coated with a thin layer of electrical insulation that prevents current through the spring from bypassing the turns.
  • An insulating sleeve 83 encircling the guide member also aids in preventing any current from bypassing the turns of spring 80.
  • the flange 82 is provided with a helical groove 84 into which the helical spring is threaded. This connection is best shown in FIG. 6.
  • Four tapped holes are provided in the flange 82 at angularly-spaced points, and these holes register with holes 85a in the spring 80.
  • Screws 86 extend through the holes in the spring and are threaded into the tapped holes 85 in the flange. These screws 86 clamp the walls of the groove in high pressure engagement with the adjacent surfaces of the spring 89 and also prevent the spring from unscre'wing from the groove 84.
  • a similar connection is provided between the rear end of the spring 80 and the flange 78 on the electrode 70.
  • the upstream are terminal When the upstream are terminal is transferred from the stationary contact 14 to the electrode 70, as was described hereinabove, it is forced by the main air blast B enveloping the electrode '70 to move toward the forward face of the electrode. No current flows through the spring 80 until the arc is transferred to the electrode 70, but after this transfer has occurred, current flows through the spring 80 and produces the magnetic eld 88 referred to hereinabove.
  • the magnetic ileld 88 extends radially with respect to the axially-extending arc and is thus able to produce rotation of the upstream arc terminal about the central portion of the electrode.
  • slots 107 are provided in the upstream electrode. These slots extend radially outward from the central region of the electrode and then axially of the electrode in the tubular wall portion 76. These slots 107 force most 0i the current flowing through the electrode to an arc terminal thereon to follow a path that approaches the arc solely from the back of the electrode. Current is blocked from following circumferentially-extending paths approaching the arc. By forcing most of the current to follo'w a path that approaches the arc from the back of the electrode, a more delinite loop bowing toward the front face of the electrode is defined. This results in a greater magnetic force urging the arc toward the forward face of the electrode, thus accelerating movement of the upstream terminal to the forward face of the electrode.
  • Another function served by the coiled spring 80 is to provide a force on the upstream electrode 70 urging it to the right into its position of FIG. 2.
  • a movable valve member 90 attached to the valve stem 72 abuts against a stationary annular valve seat 92, thus blocking further movement of the upstream electrode 70 to the right.
  • auxiliary blast passage leading through the upstream electrode 70 is the hollow stud 60 to atmosphere.
  • the portion of this auxiliary blast passage that extends through the electrode 70 is designated 95 and the portion extending through the stud 60 is designated 96.
  • the auxiliary blast passage is normally closed by means of the normally-closed auxiliary blast valve 9i), 92. But under high current conditions, as will soon be described, the movable auxiliary blast valve member 90 is moved to the left to open the auxiliary blast valve 90, 92, as shown in FIG. 3. This permits high pressure air to flow through the auxiliary blast passage 95, 96 via the thenopen auxiliary blast valve 90, 92.
  • the path of the auxiliary blast is indicated by the arrows 97 in FIG. 3, where the auxiliary blast can be seen passing through openings 99 and the stem 72 and then through the central opening annular valve seat 92.
  • the force for producing the above-described opening of the auxiliary blast valve 90, 92 is derived from current through the coiled spring 80.
  • current flowing through the spring 80 will develop magnetic force that tends to draw together the turns of the spring. This action is opposed by the high pressure air in casing 12 acting to the right on the movable valve member 90 and, to a lesser extent, by the resilience of the spring 80.
  • suli'icient magnetic force is developed to overcome this opposition and move the turns of the turns of the spring toward each.
  • This leftward motion is transmitted through the valve stem 72 to effect opening of the movable' valve member 90.
  • the distance that the upstream electrode moves to the left can be controlled by a suitable stop.
  • the spring Si) can be designed so that the electromagnetic forces effect the above-described leftward motion of the electrode at any desired current level, assuming a given pressure in the tank 12.
  • the circuit breaker is called upon to interrupt a current of a moderate or relatively low value, i.e., below 15,000 amperes peak, the current through the coiled spring 80 is insuflicient to move the upstream electrodes out of its normal position of FIG. l. It is thus insufficient to open the auxiliary blast valve 90, 92. During such interruptions, the movable blast valve 40 opens and produces the main blast of air B that moves the arc into the position of FIG. l, but there is no auxiliary blast through the auxiliary blast passage 95, 96.
  • a moderate or relatively low value i.e., below 15,000 amperes peak
  • a radial magnetic field such as s'hown at 88 that acts to magnetically drive the upstream terminal of the arc 46 in a circular path about the central region of the electrode 70.
  • This radial-magnetic field 88 is produced by current flowing through coil 80, as was previously described.
  • the shorter -spacing between the upstream electrode 70 and the orifice member 39 improves the interrupting ability of the circuit breaker, enabling it to interrupt appreciably higher currents than it could with the relatively long original gap length.
  • Some of the increased interrupting capacity also -appears to be attributable to the fact that the shorter gap between the electrode 70 and the orifice member 39 causes less arc energy to be released upstream of the orifice.
  • the auxiliary blast will drive the upstream terminal of the arc inside the auxiliary blast passage 95.
  • an arcing probe of a refractory material is provided for receiving the arc terminal when it is driven into this position. The arc terminal will attach to this probe 100, and this will prevent damage to adjacent parts of the auxiliary blast valve.
  • the arc column will -be generally parallel to the radial field 88. Under these conditions, there will be no substantial arc-rotating fonce. But prior to entry of the arc into the passage 95 there will be an arc-rotating force that rotates the arc to reduce the quantity of arcing products generated. Also, under lower current interrupting conditions when no auxiliary blast is present, the upstream arc terminal does not enter the auxiliary blast passage 95, and the radial magnetic field 88 is effective to produce arc rotation. This desirably serves to reduce arc erosion of the upstream electrode. This arc rotation also allows higher currents to be interrupted with the relatively long gap that is present between the upstream electrode 70 and and orifice member 39.
  • auxiliary blast valve 90, 92 is maintained closed for low and moderate currents is advantageous since it greatly reduces the number of times that the valve will be called upon to open and close. This is particularly so since a high current fault is ordinarily a very rare occurrence. This reduced frequency of operation reduces wear on the valve elements, thereby materially prolonging their life and improving the reliability of the auxiliary blast valve.
  • our invention in its broader aspects icomprehends an arangement in which there is no auxiliary lblast Valve or auxiliary blast passage. In such an arrangement, the only blast is the main blast at B.
  • the arc-rotating means and gap length control means are still present, however, lto aid circuit interruption.
  • Our invention in its broader aspects also comprehends other current responsive means instead of coiled spring 80 for changing the electrode spacing during high current interruptions.
  • the upstream arc terminal is normally prevented from entering the auxiliary blast passage 95.
  • a tubular insert of a suitable insulating material is included in the upstream electrode 70.
  • This insert 120 provides a thick coating of insulating material on the portion of the upstream electrode surrounding the mouth of auxiliary blast passage 95, thus blocking the( arc terminal from moving into the auxiliary blast passage.
  • the arc is kept in a position where the magnetic field from coil 80 extends transversely of the arc and is able to produce effective arc-rotation about the longitudinal axis of passage 95.
  • a preferred material for the insert 120 is polytetrafiuoroethylene, sold under the trademark Tefion.
  • said one electrode having a normal position where it is spaced by a predetermined first amount from said other electrode
  • circuit breaker of claim 1 in combination with arc-rotating means for developing a magnetic field extending transversely of said arc for rotating at least a portion of said arc during the circuit-interrupting operation.
  • the circuit breaker of claim 1 in which the means for moving said one electrode toward the other electrode comprises an electromagnet that is energized by arcing current and develops in response to energization a magnetic field extending transversely of said arc and capable of rotating said arc.
  • said one electrode is of a hollow construction and said means responsive to arcing current comprises a coil located within said hollow electrode,
  • a conductive member is provided projecting into said hollow electrode from the back thereof for supporting said electrode and for carrying current to and from said electrode, and
  • said coil encircles said conductive member and is connected at one end to said conductive member and at its opposite end to a portion of said one electrode.
  • gas-blast type com- (c) a normally-closed auxiliary blast valve for controlling fiows through said auxiliary blast passage, (d) means controlled by movement of said one electrode toward said other electrode for opening said auxiliary blast valve to produce an auxiliary blast through said auxiliary blast passage during high current interruptions,
  • An electric circuit breaker of the gas-blast type comprising:
  • auxiliary blast valve for controlling fiow through said auxiliary blast passage
  • means controlled by movement of said upstream electrode toward said orifice for opening said auxiliary blast valve to produce an auxiliary blast through said auxiliary passage during high current interruptions.
  • An electric circuit breaker of the comprising:
  • auxiliary blast valve in said auxiliary blast passage for controlling flow through said auxiliary blast passage and blocking fiow therethrough when closed

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  • Discharge Lamp (AREA)
US487206A 1965-09-14 1965-09-14 Gas-blast circuit breaker Expired - Lifetime US3418440A (en)

Priority Applications (7)

Application Number Priority Date Filing Date Title
US487206A US3418440A (en) 1965-09-14 1965-09-14 Gas-blast circuit breaker
GB31218/66A GB1086546A (en) 1965-09-14 1966-07-12 Gas-blast circuit breaker
ES0330090A ES330090A1 (es) 1965-09-14 1966-08-10 Un dispositivo interruptor electrico
FR74272A FR1491644A (fr) 1965-09-14 1966-08-26 Disjoncteur à soufflage de gaz
SE12184/66A SE330047B (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1965-09-14 1966-09-09
CH1319766A CH446478A (de) 1965-09-14 1966-09-13 Elektrischer Druckgas-Stromschalter
JP6071266A JPS4213649B1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1965-09-14 1966-09-14

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US487206A US3418440A (en) 1965-09-14 1965-09-14 Gas-blast circuit breaker

Publications (1)

Publication Number Publication Date
US3418440A true US3418440A (en) 1968-12-24

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Application Number Title Priority Date Filing Date
US487206A Expired - Lifetime US3418440A (en) 1965-09-14 1965-09-14 Gas-blast circuit breaker

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US (1) US3418440A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
JP (1) JPS4213649B1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
CH (1) CH446478A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
ES (1) ES330090A1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
FR (1) FR1491644A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
GB (1) GB1086546A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
SE (1) SE330047B (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3471667A (en) * 1967-07-21 1969-10-07 Gen Electric Double exhaust gas blast circuit breaker
US3471666A (en) * 1967-04-18 1969-10-07 Gen Electric Axial blast interrupter with arc-rotating means
US3773994A (en) * 1972-06-30 1973-11-20 Gen Electric Double-exhaust gas-blast circuit breaker
US4015095A (en) * 1974-09-17 1977-03-29 Siemens Aktiengesellschaft Contact arrangement for an electric compressed-gas circuit breaker

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2624595C3 (de) * 1976-05-28 1980-01-10 Siemens Ag, 1000 Berlin Und 8000 Muenchen Kontaktanordnung für Druckgasschalter
FR2441261A1 (fr) * 1978-11-10 1980-06-06 Merlin Gerin Interrupteur a arc tournant
FR2496333A1 (fr) * 1980-12-16 1982-06-18 Alsthom Atlantique Disjoncteur pour courant continu a haute tension

Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB358554A (en) * 1929-07-06 1931-10-07 Sigwart Ruppel Improvements relating to electric switches or circuit breakers with arc-quenching means
US1827516A (en) * 1924-12-11 1931-10-13 Condit Electrical Mfg Corp Electric switch
GB475370A (en) * 1936-06-12 1937-11-18 Gen Electric Co Ltd Improvements in or relating to alternating current electric switches
US2724751A (en) * 1951-02-09 1955-11-22 Asea Ab Air blast circuit breaker
US2773155A (en) * 1953-11-27 1956-12-04 Westinghouse Electric Corp Circuit interrupter
US2897324A (en) * 1957-10-09 1959-07-28 Gen Electric Fluid blast circuit interrupter
US3110791A (en) * 1959-08-27 1963-11-12 Westinghouse Electric Corp Circuit interrupter with pressure-generating and interrupting contacts in insulating interrupting tube
US3167630A (en) * 1959-06-02 1965-01-26 English Electric Co Ltd Multi-break gas blast circuit breaker and operating means therefor
US3185802A (en) * 1960-07-18 1965-05-25 Merlin Gerin Gas blast circuit breakers having at least one tubular contact
US3238340A (en) * 1961-08-25 1966-03-01 Sprecher & Schuh Ag Gas-blast circuit breaker
US3257533A (en) * 1965-04-23 1966-06-21 Westinghouse Electric Corp Fluid-blast circuit interrupters with two selectively-operated fluid-blast sources
US3270173A (en) * 1963-11-21 1966-08-30 Gen Electric Gas blast circuit breaker of the axial blast type with means for injecting a high velocity gas jet
US3358102A (en) * 1964-08-24 1967-12-12 Westinghouse Electric Corp High-power compressed-gas circuit interrupter with double-flow contact structure disposed within gas-directing casing

Patent Citations (13)

* 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
GB358554A (en) * 1929-07-06 1931-10-07 Sigwart Ruppel Improvements relating to electric switches or circuit breakers with arc-quenching means
GB475370A (en) * 1936-06-12 1937-11-18 Gen Electric Co Ltd Improvements in or relating to alternating current electric switches
US2724751A (en) * 1951-02-09 1955-11-22 Asea Ab Air blast circuit breaker
US2773155A (en) * 1953-11-27 1956-12-04 Westinghouse Electric Corp Circuit interrupter
US2897324A (en) * 1957-10-09 1959-07-28 Gen Electric Fluid blast circuit interrupter
US3167630A (en) * 1959-06-02 1965-01-26 English Electric Co Ltd Multi-break gas blast circuit breaker and operating means therefor
US3110791A (en) * 1959-08-27 1963-11-12 Westinghouse Electric Corp Circuit interrupter with pressure-generating and interrupting contacts in insulating interrupting tube
US3185802A (en) * 1960-07-18 1965-05-25 Merlin Gerin Gas blast circuit breakers having at least one tubular contact
US3238340A (en) * 1961-08-25 1966-03-01 Sprecher & Schuh Ag Gas-blast circuit breaker
US3270173A (en) * 1963-11-21 1966-08-30 Gen Electric Gas blast circuit breaker of the axial blast type with means for injecting a high velocity gas jet
US3358102A (en) * 1964-08-24 1967-12-12 Westinghouse Electric Corp High-power compressed-gas circuit interrupter with double-flow contact structure disposed within gas-directing casing
US3257533A (en) * 1965-04-23 1966-06-21 Westinghouse Electric Corp Fluid-blast circuit interrupters with two selectively-operated fluid-blast sources

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3471666A (en) * 1967-04-18 1969-10-07 Gen Electric Axial blast interrupter with arc-rotating means
US3471667A (en) * 1967-07-21 1969-10-07 Gen Electric Double exhaust gas blast circuit breaker
US3773994A (en) * 1972-06-30 1973-11-20 Gen Electric Double-exhaust gas-blast circuit breaker
US4015095A (en) * 1974-09-17 1977-03-29 Siemens Aktiengesellschaft Contact arrangement for an electric compressed-gas circuit breaker

Also Published As

Publication number Publication date
FR1491644A (fr) 1967-08-11
SE330047B (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1970-11-02
JPS4213649B1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1967-08-02
CH446478A (de) 1967-11-15
ES330090A1 (es) 1967-06-01
GB1086546A (en) 1967-10-11

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