WO2016088561A1 - Disjoncteur cc grande vitesse - Google Patents

Disjoncteur cc grande vitesse Download PDF

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Publication number
WO2016088561A1
WO2016088561A1 PCT/JP2015/082521 JP2015082521W WO2016088561A1 WO 2016088561 A1 WO2016088561 A1 WO 2016088561A1 JP 2015082521 W JP2015082521 W JP 2015082521W WO 2016088561 A1 WO2016088561 A1 WO 2016088561A1
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WO
WIPO (PCT)
Prior art keywords
arc
circuit breaker
grid
main contact
gas flow
Prior art date
Application number
PCT/JP2015/082521
Other languages
English (en)
Japanese (ja)
Inventor
知裕 仲田
遠矢　将大
Original Assignee
三菱電機株式会社
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 三菱電機株式会社 filed Critical 三菱電機株式会社
Priority to JP2016562377A priority Critical patent/JP6203428B2/ja
Priority to AU2015356244A priority patent/AU2015356244B2/en
Priority to EP15865768.4A priority patent/EP3229250B1/fr
Publication of WO2016088561A1 publication Critical patent/WO2016088561A1/fr

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Classifications

    • 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
    • H01H33/08—Stationary parts for restricting or subdividing the arc, e.g. barrier plate
    • H01H33/10—Metal parts
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/30—Means for extinguishing or preventing arc between current-carrying parts
    • H01H9/34—Stationary parts for restricting or subdividing the arc, e.g. barrier plate
    • H01H9/342—Venting arrangements for arc chutes
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/30—Means for extinguishing or preventing arc between current-carrying parts
    • H01H9/34—Stationary parts for restricting or subdividing the arc, e.g. barrier plate
    • H01H9/345—Mounting of arc chutes
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/30—Means for extinguishing or preventing arc between current-carrying parts
    • H01H9/34—Stationary parts for restricting or subdividing the arc, e.g. barrier plate
    • H01H9/36—Metal parts
    • H01H9/362—Mounting of plates in arc chamber
    • 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
    • H01H33/20—Means for extinguishing or preventing arc between current-carrying parts using arcing horns
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/30—Means for extinguishing or preventing arc between current-carrying parts
    • H01H9/44—Means for extinguishing or preventing arc between current-carrying parts using blow-out magnet
    • H01H9/443—Means for extinguishing or preventing arc between current-carrying parts using blow-out magnet using permanent magnets

Definitions

  • the present invention relates to a DC high speed circuit breaker used as a protective circuit breaker for a railway substation, for example, and more particularly to an arc extinguishing chamber structure.
  • the DC high-speed circuit breaker as a protective circuit breaker for railway substations.
  • the DC high-speed circuit breaker is placed in the upper part of the arc extinguishing chamber by commutating the arc generated between the arc contacts at the time of current interruption to the arc runner placed above the arc contactor and running on the arc runner. It is forced to limit the fault current by generating an arc voltage higher than the power supply voltage by increasing the arc resistance due to arc extension and dropping the electrode by dividing the grid in a short time to the iron plate called grid. Therefore, it is necessary to create a zero current point and cut it off.
  • a very hot arc melts surrounding arc contacts and arc runners and generates highly conductive arc gas. Since the arc has a property of being easily short-circuited at a portion having high conductivity, when the arc gas stops or flows in between the main contacts, the arc guided to the grid causes re-ignition that is ignited again between the main contacts. When the re-ignition is performed, the arc voltage raised to the power supply voltage or more suddenly drops to near 100 V, so that the current limiting is interrupted and the interruption performance is deteriorated. In the worst case, the arc may be short-circuited between the contacts, which may result in failure of interruption.
  • the DC high-speed circuit breaker needs to have a performance capable of interrupting a small current.
  • the electromagnetic force for driving and extending the arc is low, and since the arc does not travel to the tip of the arc horn, it cannot be cut off unless the electromagnetic force is increased or the arc voltage is increased within a limited travel range. Therefore, the DC high speed circuit breaker needs to have a performance capable of interrupting a wide current range from a large current to a small current.
  • Patent Document 1 Japanese Utility Model Laid-Open No. 6-60944.
  • arc horn AH is mounted so enter the bottom of example extinguishing chamber AS for improving the breaking performance by controlling the arc gas
  • side plates 13 1, 13 2 of the arcing horn AH A through groove 17 is provided at a lower position, and a barrier insulating plate 18 is detachably provided through the through groove 17 so as to prevent the arc from being blown out downward to prevent an arc grounding to equipment below the arc extinguishing chamber AS.
  • the pressure between the arc horn AH and the insulating plate 18 is increased to improve the interruption performance.
  • the above-described conventional DC high speed circuit breaker needs to smoothly move the arc gas from the contact point to the grid and efficiently exhaust the gas from the opening at the upper part of the arc extinguishing chamber in order to reliably interrupt the accident current.
  • the cross-sectional area of the opening is increased to prevent the arc gas from flowing from the grid portion to the contact portion in the large current region. It is necessary to improve the amount of exhaust.
  • the conventional arc extinguishing chamber has a constant thickness from the lower part to the upper part, and if the grid is arranged, the cross-sectional area of the opening is reduced, which makes it difficult for the arc gas to flow to the upper part of the arc extinguishing chamber. .
  • the opening area of the upper part of the arc extinguishing chamber is small, there is a problem that the arc gas reenters from the grid part to the contact part and re-ignites in a large current region.
  • the arc voltage when reaching the grid part must be kept constant until breaking is completed.
  • Factors that determine the arc voltage include the number of grids and the arc length, and the arc voltage can be adjusted by the number of grids.
  • the present invention has been made to solve the above-described problems, and its purpose is to keep the arc voltage constant by preventing re-ignition between the contacts and bridging at the upper part of the arc extinguishing chamber.
  • the present invention provides a DC high-speed circuit breaker that can maintain a high breaking performance even from a large current to a small current.
  • a DC high speed circuit breaker according to the present invention is disposed in an arc extinguishing chamber in which an arc extinguishing space is formed, a fixed main contact disposed on the lower side of the arc extinguishing chamber, and on the lower side of the arc extinguishing chamber.
  • a DC high-speed circuit breaker comprising a movable main contact that is connected to and separated from the fixed main contact, wherein the arc extinguishing chamber is disposed so as to sandwich the fixed main contact and the movable main contact from both sides.
  • a first insulating side plate forming a first arc gas flow path for guiding arc gas generated at the fixed side main contact and the movable side main contact to the outside of the arc extinguishing chamber; and the fixed side main contact and the movable side main contact
  • a second arc gas flow passage disposed on the upper side and configured to have a width larger than a distance between the first insulating side plates, and communicated with the first arc gas flow passage and having a cross-sectional area larger than a cross-sectional area of the first arc gas flow passage;
  • a plurality of grids to be formed and the grid 2nd insulating side plate which is arrange
  • the arc-insulating chamber includes a first insulating side plate that forms a first arc gas flow passage that guides the arc gas generated at the fixed-side main contact and the movable-side main contact to the outside of the arc-extinguishing chamber, and
  • the first magnetic pole plate is disposed on the upper side of the fixed main contact and the movable main contact, is configured to have a width larger than the interval between the first insulating side plates, and communicates with the first arc gas flow passage.
  • a plurality of grids forming a second arc gas flow passage having a cross-sectional area larger than the cross-sectional area, and a third arc gas flow having a cross-sectional area larger than the cross-sectional area of the second arc gas flow passage communicating with the second arc gas flow passage on the upper side of the grid
  • the arc gas can easily flow to the upper part of the arc extinguishing chamber, the arc gas exhaust performance is improved, and the re-ignition between the contacts is performed. Can win, it is possible to obtain a high breaking performance.
  • 3A is a front sectional view of an arc extinguishing chamber and a sectional view taken along line AA showing the relationship between the flow of arc gas in the arc extinguishing chamber and the opening in the DC high-speed circuit breaker according to Embodiment 1 of the present invention; is there. It is a characteristic view which shows the relationship between the opening cross-sectional area of the opening part which is the ease of the arc gas flow of the arc-extinguishing chamber in the DC high-speed circuit breaker according to Embodiment 1 of the present invention, and the arc-extinguishing chamber position.
  • FIG. 1 is a side sectional view showing a contact closing state in a DC high-speed circuit breaker according to Embodiment 1 of the present invention.
  • FIG. 2 is a side sectional view showing a state in which the contact in the DC high-speed circuit breaker according to Embodiment 1 of the present invention is in a breaking operation.
  • the direct current high-speed circuit breaker 101 connects the upper conductor 103 disposed below the arc extinguishing chamber 102 in which the arc extinguishing space is formed and the lower conductor 104 disposed below the upper conductor 103 to the upper conductor 103 when current is applied.
  • the fixed-side main contact 105 made in contact with the movable-side main contact 107 connected to the mover 106 connected to the lower conductor 104, and the mover 106 causes current to flow through the upper conductor 103 and the lower conductor 104. ing.
  • the overcurrent detector 108 disposed on the lower conductor 104 detects and operates the overcurrent, and releases the latch 109 holding the mover 106 when the current is energized.
  • the movable element 106 rotates clockwise around the rotation shaft 110 to perform the opening operation.
  • the fixed-side main contact 105 and the movable-side main contact 107 are accommodated in the arc extinguishing chamber 102, and an arc contact that generates an arc K when interrupted is disposed above the fixed-side main contact 105 and the movable-side main contact 107.
  • the fixed-side arc contact 111 and the movable-side arc contact 112 are configured.
  • the fixed-side arc contact 111 and the movable-side arc contact 112 are opened after the opening of the fixed-side main contact 105 and the movable-side main contact 107 in the opening operation, so that the arc K is fixed. It prevents the main contact 105 and the movable main contact 107 from being melted and protects the fixed main contact 105 and the movable main contact 107.
  • An arc horn for commutating the generated arc K and guiding it to the upper part of the arc extinguishing chamber 102 is disposed above the fixed side arc contact 111 and the movable side arc contact 112.
  • the arc horn is a fixed side arc horn. 113 and the movable side arc horn 114 are comprised.
  • a plurality of grids 115a made of a thin plate-like magnetic material having magnetism for increasing the arc voltage and cutting off the current limit by extending the electrode drop voltage and the arc length are arranged.
  • An exhaust port 116 for exhausting arc gas to the outside of the arc extinguishing chamber 102 is provided on the upper side of the grid assembly 115 of 115a.
  • FIG. 3 is a perspective view showing an arc extinguishing chamber in the DC high-speed circuit breaker according to Embodiment 1 of the present invention.
  • FIG. 4 is a perspective view showing a flat grid and a U-shaped grid in the DC high-speed circuit breaker according to Embodiment 1 of the present invention.
  • FIG. 5 is a perspective view showing an insulating plate in the DC high-speed circuit breaker according to Embodiment 1 of the present invention.
  • FIG. 6 is the (a) front view and the (b) side view which show the insulation board, flat plate grid, and U-shaped grid in the direct-current high-speed circuit breaker concerning Embodiment 1 of this invention.
  • FIG. 7 is a perspective exploded view showing the upper part of the arc extinguishing chamber in the DC high-speed circuit breaker according to Embodiment 1 of the present invention.
  • FIG. 8 is an exploded perspective view showing a lower part of the arc extinguishing chamber in the DC high-speed circuit breaker according to Embodiment 1 of the present invention.
  • FIG. 9 is (a) front exploded view and (b) side exploded view which show the arc-extinguishing chamber lower part in the direct-current high-speed circuit breaker concerning Embodiment 1 of this invention.
  • the arc extinguishing chamber 102 is composed of three components. First, as shown in FIGS. 3, 8, and 9, the fixed-side main contact 105, the movable-side main contact 107, the fixed-side arc contact 111, and the movable-side arc contact 112 are arranged to be sandwiched from both sides.
  • the pair of first insulating side plates 123 form a first arc gas flow passage R1 that guides the arc gas generated at the fixed main contact 105 and the movable main contact 107 to the outside of the arc extinguishing chamber 102. Second, as shown in FIGS.
  • the second arc gas flow passage R2 is disposed and has a width larger than the interval between the first insulating side plates 123 and communicates with the first arc gas flow passage R1 and has a cross-sectional area larger than that of the first arc gas flow passage R1.
  • a flat grid 118 and a U-shaped grid 119 are a plurality of grids. As shown in FIGS.
  • the third one is arranged so as to sandwich the flat grid 118 and the U-shaped grid 119 constituting the grid from both sides, and above the flat grid 118 and the U-shaped grid 119 constituting the grid.
  • a third arc gas flow passage R3 having a cross-sectional area larger than the cross-sectional area of the second arc gas flow passage R2 is formed on the side, and is arranged with a width larger than the width between the first insulating side plates 123.
  • a pair of second insulating side plates 124, and the arc extinguishing chamber 102 is constituted by these three components.
  • the width between the second insulating side plates 124 is configured to be larger than the width between the first insulating side plates 123. For example, the width is about three times as shown in FIG.
  • a flat grid 118 provided with a V-shaped notch 117 in the arc extinguishing chamber 102 toward the fixed side arc contact 111 and the movable side arc contact 112, respectively, and A U-shaped grid 119 is arranged.
  • the flat grid 118 and the U-shaped grid 119 constitute a grid.
  • an insulating plate 120 is disposed on the side surface in the plate thickness direction of the flat grid 118 to prevent the arc K from jumping out of the flat grid 118, and on the side surface of the U-shaped grid 119. Insulating plate 120 and insulating plate 121 are arranged to prevent arc K from jumping out of U-shaped grid 119.
  • a spacing insulating plate 122 in which a grid made up of a flat grid 118 and a U-shaped grid 119 is arranged for each of a plurality of groups is extended above the flat grid 118 and the U-shaped grid 119. Arranged in a state.
  • the second insulating side plate 124 sandwiches the flat plate grid 118, the U-shaped grid 119, the insulating plate 120, the insulating plate 121, and the gap insulating plate 122 from both sides.
  • an elongated plate 125a is provided in an insulating plate 125 disposed inside the second insulating side plate 124, and a flat plate grid 118, a U-shaped grid 119 and an insulating plate 120, an insulating plate 121, a spacing insulating plate are provided in these grooves 125a.
  • 122 is fitted and fixed.
  • an arc extinguishing material 126 that improves the arc extinguishing performance by cooling the arc K at the time of interruption is disposed inside the first insulating side plate 123.
  • a first magnetic pole plate 127 arranged for improving electromagnetic force acting on the arc K is arranged inside the outer first insulating side plate 123 so as to be covered with insulating plates 128 and 129 that prevent the arc K from short-circuiting. Is arranged.
  • a second magnetic pole plate 130 arranged for improving the electromagnetic force acting on the arc K is arranged inside the second insulating side plate 124 and arranged so as to be covered with an insulating plate 131 that prevents the arc K from being short-circuited. Has been.
  • a first arc gas flow passage R1 is formed between the first insulating side plates 123 to guide the arc gas generated at the fixed main contact 105 and the movable main contact 107 to the outside of the arc extinguishing chamber 102, and the arc gas is indicated by an arrow K1. Flows through the first arc gas flow passage R1.
  • the arc gas flowing through the first arc gas flow path R1 as indicated by the arrow K1 is indicated by an arrow in the second arc gas flow path R2 having a cross-sectional area larger than the cross-sectional area of the first arc gas flow path R1 between the flat grid 118 and the U-shaped grid 119.
  • the arc gas that has circulated as indicated by K2 and that has circulated through the second arc gas flow path R2 has a third cross-sectional area that is larger than the cross-sectional area of the second arc gas flow path R2 above the flat grid 118 and the U-shaped grid 119. It flows through the arc gas flow passage R3 as indicated by an arrow K3.
  • the arc gas flowing through the third arc gas flow passage R3 is led out of the arc extinguishing chamber 102 from the exhaust port 116, which is an opening between the first insulating side plates 123, as indicated by an arrow K4.
  • the position DC, the position A, and the position C in the arc extinguishing chamber 102 are configured in the relationship of position A> position A> position U.
  • the width of the insulating plate 32 provided with the magnetic pole plate 33 on the outer side surface is the same from the fixed main contact and the movable main contact to the grid tip.
  • the characteristic due to the relationship between the two is as shown in FIG.
  • the arc gas can flow more easily than the conventional one, and the arc gas exhaust performance is improved and the contact point is increased. Re-pointing between Suppressed, it is possible to obtain high interruption performance.
  • a first magnetic pole plate 127 is disposed inside the first insulating side plate 123 to improve the electromagnetic force acting on the arc K
  • a second magnetic pole is arranged inside the second insulating side plate 124 to improve the electromagnetic force acting on the arc K.
  • FIG. 12 is a front view of a main part showing the relationship between arc discharge and arc voltage in the grid arrangement part of the arc extinguishing chamber in the DC high speed circuit breaker according to Embodiment 2 of the present invention.
  • the middle portion becomes a space 132.
  • a V-shaped notch 117 is provided at the center of the bottom of the U-shaped grid 119, and the arc gas can be blown through the intermediate space 132.
  • the distance between the flat grid 118 and the U-shaped grid 119 that arc discharge that is, the arc length 133 and the electrode drop. Since the number of the flat grid 118 and the U-shaped grid 119 can be adjusted, an arbitrary arc voltage can be generated.
  • the second embodiment it is possible to generate an arbitrary arc voltage by using a combination of the flat grid 118 and the U-shaped grid 119 as the grid.
  • FIG. 13 is a front view which shows the ease of the arc of the arc extinguishing chamber in the direct-current high-speed circuit breaker concerning Embodiment 3 of this invention.
  • the region where the arc tends to stay is in the vicinity of the contact portion such as the fixed side main contact 105, the movable side main contact 107, the fixed side arc contact 111 and the movable side arc contact 112.
  • the contact portion such as the fixed side main contact 105, the movable side main contact 107, the fixed side arc contact 111 and the movable side arc contact 112.
  • a grid arrangement portion 137 such as a flat grid 118 and a U-shaped grid 119
  • an arc extinguishing chamber upper portion 138 above the flat grid 118 and the U-shaped grid 119 are examples of the contact portion 136.
  • the arc gas which is one of the factors for the ease of discharge, passes through the space 132 in the middle portion of the U-grid 119 via the V-shaped notch 117 and is exhausted from the exhaust port 116 at the top of the arc extinguishing chamber 102. Therefore, the exhaust performance is the same as when the flat grid 118 is arranged.
  • the width and the number ratio of the bottom of the U-shaped grid 119 it is possible to make the grid spacing easy to discharge arcs. Therefore, by using the U-shaped grid 119, it is possible to improve the easiness of staying of the arc in the grid arrangement portion 137 while maintaining the same ease of discharging the arc gas in the vicinity of the contact portion 136.
  • the arc is stably maintained in the grid arrangement part 137 and is a constant arc voltage that is higher and stable than the power supply voltage required for interruption. Can be maintained.
  • the grid interval and arc length are shortened, the arc is most likely to stay at the grid placement portion 137, and a stable arc voltage can be maintained until the interruption is completed.
  • FIG. 14 is a front view showing the arrangement of arcs, flat grids, and U-shaped grids when the arc extinguishing chamber is at a small current in a DC high-speed circuit breaker according to Embodiment 4 of the present invention.
  • FIG. 15 is a characteristic diagram showing the electromagnetic force received by the arc of the arc extinguishing chamber from the arc horn as the conducting conductor in the DC high-speed circuit breaker according to Embodiment 4 of the present invention.
  • FIG. 16 is a characteristic view which shows the electromagnetic force which acts on the arc of the arc-extinguishing chamber in the direct current
  • the flat grid 118 and the U-shaped grid 119 of the arc extinguishing chamber 102 according to the fourth embodiment of the present invention are arranged such that the flat grid 118 is arranged on the center side 139 and the U-shaped grid 119 is arranged on both sides 140. Configured.
  • the electromagnetic force received by the arc receives magnetic flux G from the fixed-side arc horn 113 and the movable-side arc horn 114, which are arc horns that are current-carrying conductors through which the current I flows, and is generated in accordance with the Fleming left-hand rule.
  • the electromagnetic force 144 generated by the balance between the force 142 and the pinch force 143 acting in the arc center direction by the magnetic material as shown in FIG. 16 becomes a magnetic flux 145 having a weak magnetic flux region G1 and a strong magnetic flux region G2.
  • the arc cannot travel to the front end portions 141a and 141b of the fixed side arc horn 113 and the movable side arc horn 114 which are arc horns because the electromagnetic force 142 received from the conducting conductor is small. Therefore, only a limited range, that is, the grid on the center side can be used. However, in order to cut off the direct current, it is necessary to generate an arc voltage higher than the power supply voltage.
  • the flat grid 118 is arranged on the central side 139 and the U-shaped grid 119 is arranged on both sides 140, so that a large number of electrodes can be obtained even in the arc traveling range with a small current.
  • the arc voltage can be increased by the drop, and a high small current interruption performance can be obtained.
  • FIG. Embodiment 5 of the present invention will be described with reference to FIG. FIG. 17A is a front view and FIG. 17B is a side view showing the effect of a magnetic pole plate in a DC high-speed circuit breaker according to Embodiment 5 of the present invention.
  • the first magnetic pole plate 127 when the first magnetic pole plate 127 is arranged on the first insulating side plate 123 of the arc extinguishing chamber 102, the magnetic flux 145 generated by the arc passes through the first magnetic pole plate 127.
  • the magnetic flux 145 passes through the air.
  • the magnetic resistance of the magnetic material of the first magnetic pole plate 127 is smaller than that of air, so the loss of the magnetic flux 145 is reduced and the electromagnetic force 144 is increased. Therefore, the first magnetic pole plate 127 has an effect of improving the electromagnetic force 144 generated by the arc itself, and is particularly effective in a small current interruption with a small electromagnetic force 142.
  • the magnetic pole plate 33 is arranged so as to be exposed outside the insulating plate 32 of the arc extinguishing chamber 31. In some cases, the arc could be short-circuited through the magnetic pole plate 33 and failed to be interrupted. Therefore, in the fifth embodiment, as shown in FIG. 8, the first magnetic pole plate 127 is disposed inside the first insulating side plate 123 of the arc extinguishing chamber 102, and the second magnetic pole plate 130 is arranged in the arc extinguishing chamber 102. Arranged inside the second insulating side plate 124 and covered and fixed with an insulator, the arc is not directly touched and cannot be electrically connected.
  • the arc extinguishing chamber 102 is divided into a first magnetic pole plate 127 and a second magnetic pole plate 130 because the width dimension is different between the lower portion on the first insulating side plate 123 side and the upper portion on the second insulating side plate 124 side.
  • the first magnetic pole plate 127 is disposed inside the first insulating side plate 123 and the second magnetic pole plate 130 is disposed inside the second insulating side plate 124.
  • the first magnetic pole plate 127 is replaced with the insulating plate 128. Since the second magnetic pole plate 130 is covered with the insulating plate 131, the arc is not directly touched.
  • the arc or arc gas does not contact the first magnetic pole plate 127 and the second magnetic pole plate 130 without impairing the effect of the magnetic pole plate that improves the electromagnetic force acting on the arc. It is possible to prevent a short circuit and a failure of interruption through the first magnetic pole plate 127 and the second magnetic pole plate 130, and it is possible to reliably cut off from a small current to a large current.
  • FIG. 18A is a front view
  • FIG. 18B is a side view showing a U-shaped grid in a DC high-speed circuit breaker according to Embodiment 6 of the present invention.
  • the function of the U-shaped grid 119 can be satisfied if two opposing flat grids 118 are electrically connected and current can be passed. Therefore, it is also possible to connect using bolts 146, nuts 147 or rivets, or by welding 148.
  • FIG. 19A is a front view
  • FIG. 19B is a side view showing a magnetic pole plate in a DC high-speed circuit breaker according to Embodiment 6 of the present invention.
  • the first magnetic pole plate 127 and the second magnetic pole plate 130 are not a single plate, but the thin magnetic pole plates 149a and 149b are in close contact with each other to form the aggregates 150a and 150b.
  • the functions of the magnetic pole plate 127 and the second magnetic pole plate 130 can be satisfied.
  • the present invention facilitates the flow of arc gas to the upper part of the arc extinguishing chamber, improves the exhaust performance of the arc gas, can suppress re-ignition between the contacts, and can achieve high interruption performance. It is suitable for realization of a vessel.

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  • Arc-Extinguishing Devices That Are Switches (AREA)
  • Breakers (AREA)

Abstract

La présente invention concerne un disjoncteur à courant continu grande vitesse qui peut réaliser une haute performance de rupture de courants de forte intensité jusqu'à des courants de faible intensité. Une chambre d'extinction d'arc est formée: de premières plaques latérales d'isolation de façon à encadrer un contact principal côté fixe et un contact principal côté mobile à partir des deux côtés et formant un premier passage débit de gaz d'arc qui circule du gaz d'arc généré au niveau du contact principal côté fixe et du contact principal côté mobile vers l'extérieur de la chambre d'extinction d'arc; une pluralité de grilles disposées sur le côté supérieur du contact principal côté fixe et du contact principal côté mobile et formant un deuxième passage de débit de gaz d'arc qui est configuré pour avoir une largeur supérieure à la largeur entre les premières plaques latérales d'isolation, qui communique avec un premier passage de débit de gaz d'arc, et qui présente une surface transversale plus large que la surface transversale du premier passage de débit de gaz d'arc; et des secondes plaques latérales d'isolation disposées de façon à encadrer les grilles à partir des deux côtés et formant, sur le côté supérieur des grilles, un troisième passage de débit de gaz d'arc qui communique avec le second passage de débit de gaz d'arc et présente une section transversale plus large que la section transversale du deuxième passage de débit de gaz d'arc.
PCT/JP2015/082521 2014-12-01 2015-11-19 Disjoncteur cc grande vitesse WO2016088561A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP2016562377A JP6203428B2 (ja) 2014-12-01 2015-11-19 直流高速度遮断器
AU2015356244A AU2015356244B2 (en) 2014-12-01 2015-11-19 DC high-speed circuit breaker
EP15865768.4A EP3229250B1 (fr) 2014-12-01 2015-11-19 Disjoncteur cc grande vitesse

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2014-242760 2014-12-01
JP2014242760 2014-12-01

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WO2016088561A1 true WO2016088561A1 (fr) 2016-06-09

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PCT/JP2015/082521 WO2016088561A1 (fr) 2014-12-01 2015-11-19 Disjoncteur cc grande vitesse

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EP (1) EP3229250B1 (fr)
JP (1) JP6203428B2 (fr)
AU (1) AU2015356244B2 (fr)
WO (1) WO2016088561A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
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WO2021005889A1 (fr) 2019-07-11 2021-01-14 三菱電機株式会社 Disjoncteur à air
WO2022029931A1 (fr) * 2020-08-05 2022-02-10 三菱電機株式会社 Disjoncteur à courant continu

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108447714A (zh) * 2018-04-04 2018-08-24 上海电科电器科技有限公司 灭弧室
JP7068033B2 (ja) 2018-05-18 2022-05-16 三菱電機株式会社 直流高速度遮断器の消弧装置

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63129932U (fr) * 1987-02-17 1988-08-25
JPH01319217A (ja) * 1988-06-20 1989-12-25 Fuji Electric Co Ltd 開閉機器の消弧室
JPH05290682A (ja) * 1992-04-10 1993-11-05 Meidensha Corp 直流高速度遮断器

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20060035194A (ko) * 2004-10-21 2006-04-26 엘에스산전 주식회사 배선용 차단기의 소호장치
ITMI20072202A1 (it) * 2007-11-21 2009-05-22 Abb Spa Camera d'arco per un dispositivo di interruzione e dispositivo di interruzione comprendente tale camera d'arco.
JP2012043541A (ja) * 2010-08-12 2012-03-01 Fuji Electric Fa Components & Systems Co Ltd 回路遮断器
JP5682450B2 (ja) * 2011-05-23 2015-03-11 富士電機機器制御株式会社 回路遮断器

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63129932U (fr) * 1987-02-17 1988-08-25
JPH01319217A (ja) * 1988-06-20 1989-12-25 Fuji Electric Co Ltd 開閉機器の消弧室
JPH05290682A (ja) * 1992-04-10 1993-11-05 Meidensha Corp 直流高速度遮断器

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2021005889A1 (fr) 2019-07-11 2021-01-14 三菱電機株式会社 Disjoncteur à air
JPWO2021005889A1 (ja) * 2019-07-11 2021-12-23 三菱電機株式会社 気中回路遮断器
JP7150178B2 (ja) 2019-07-11 2022-10-07 三菱電機株式会社 気中回路遮断器
WO2022029931A1 (fr) * 2020-08-05 2022-02-10 三菱電機株式会社 Disjoncteur à courant continu
JPWO2022029931A1 (fr) * 2020-08-05 2022-02-10
JP7330385B2 (ja) 2020-08-05 2023-08-21 三菱電機株式会社 直流遮断器

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AU2015356244A1 (en) 2017-04-27
EP3229250A4 (fr) 2018-08-15
EP3229250B1 (fr) 2019-07-17

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