EP3210224B1 - Lichtbogensteuerungsvorrichtung - Google Patents
Lichtbogensteuerungsvorrichtung Download PDFInfo
- Publication number
- EP3210224B1 EP3210224B1 EP15791326.0A EP15791326A EP3210224B1 EP 3210224 B1 EP3210224 B1 EP 3210224B1 EP 15791326 A EP15791326 A EP 15791326A EP 3210224 B1 EP3210224 B1 EP 3210224B1
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- European Patent Office
- Prior art keywords
- chamber
- arc
- magnet
- contact
- width
- Prior art date
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- 238000010891 electric arc Methods 0.000 claims description 29
- 230000005465 channeling Effects 0.000 claims description 14
- 230000004907 flux Effects 0.000 claims description 11
- 238000000926 separation method Methods 0.000 claims description 9
- 230000005415 magnetization Effects 0.000 claims description 8
- 230000008033 biological extinction Effects 0.000 claims 17
- BGPVFRJUHWVFKM-UHFFFAOYSA-N N1=C2C=CC=CC2=[N+]([O-])C1(CC1)CCC21N=C1C=CC=CC1=[N+]2[O-] Chemical compound N1=C2C=CC=CC2=[N+]([O-])C1(CC1)CCC21N=C1C=CC=CC1=[N+]2[O-] BGPVFRJUHWVFKM-UHFFFAOYSA-N 0.000 description 34
- 238000005194 fractionation Methods 0.000 description 9
- 230000000694 effects Effects 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 238000006073 displacement reaction Methods 0.000 description 5
- 238000001816 cooling Methods 0.000 description 3
- 235000021183 entrée Nutrition 0.000 description 3
- 229910001209 Low-carbon steel Inorganic materials 0.000 description 2
- 230000003628 erosive effect Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000007769 metal material Substances 0.000 description 2
- 230000009747 swallowing Effects 0.000 description 2
- 101100008044 Caenorhabditis elegans cut-1 gene Proteins 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229910018503 SF6 Inorganic materials 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 241001080024 Telles Species 0.000 description 1
- 238000000071 blow moulding Methods 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000010616 electrical installation Methods 0.000 description 1
- 239000012777 electrically insulating material Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 229910001172 neodymium magnet Inorganic materials 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- SFZCNBIFKDRMGX-UHFFFAOYSA-N sulfur hexafluoride Chemical compound FS(F)(F)(F)(F)F SFZCNBIFKDRMGX-UHFFFAOYSA-N 0.000 description 1
- 229960000909 sulfur hexafluoride Drugs 0.000 description 1
- 230000002123 temporal effect Effects 0.000 description 1
Images
Classifications
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- 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
- H01H3/00—Mechanisms for operating contacts
- H01H3/02—Operating parts, i.e. for operating driving mechanism by a mechanical force external to the switch
- H01H3/08—Turn knobs
-
- 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
- H01H9/346—Details concerning the arc formation chamber
-
- 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
-
- 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
- H01H2009/347—Stationary parts for restricting or subdividing the arc, e.g. barrier plate using lids for closing the arc chamber after assembly
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- 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
- H01H2009/367—Metal parts defining a recurrent path, e.g. the subdivided arc is moved in a closed path between each pair of splitter plates
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- 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
- H01H9/46—Means for extinguishing or preventing arc between current-carrying parts using arcing horns
Definitions
- the invention relates to the field of arcing chambers and devices.
- the low-voltage cut-off devices (U_AC ⁇ 1000V and U_DC ⁇ 1500V) generally make it possible to cut an electric arc in the air.
- the advantage of this technique vis-à-vis the cut in vacuum, sulfur hexafluoride (SF 6 ) or in oil or vis-à-vis devices using a bipolar transistor gate ( "Insulated Gate Bipolar Transistor” (IGBT) is its simplicity of implementation and realization, and therefore its cost.
- the interruption of a current on a continuous electrical network necessarily involves generating a counter-electromotive force having a higher potential than the source to be cut. This is the major difficulty of a DC cut.
- the electric arc generated when the switch is opened in the air is used as a means to generate a counter-electromotive force.
- the technique of elongation and fractionation of the arc combines an elongation of the arc with a fractionation of the latter in a breaking chamber.
- the fractionation may not be operating according to the currents and there may be critical currents for which the arc stagnates at the entrance of the chamber.
- This principle has the advantage of beinghave in overload because the splitting plates support the arc and allow good cooling.
- the cut can be made more difficult in the field of photovoltaic (PV) installations for example, because of the use for panels of increasing voltages from year to year in order to reduce the costs of such installations. It is known in the context of these applications to connect several switches in series in order to increase the breaking capacity of the device thus obtained. This solution is not entirely satisfactory.
- the magnet is furthermore located on the bottom side of the interrupting chamber, ie the magnet is closer to the bottom of the interrupting chamber than to the inlet of the interrupting chamber. and the magnet generates a magnetic field whose intensity increases as one moves from the input to the bottom of the interrupting chamber.
- the invention advantageously makes it possible to provide breaking chambers having an improved breaking capacity.
- the magnet can be held in an electrically insulating magnet carrier.
- the magnet support can be assembled by interlocking with one or more splitting plates.
- Such a characteristic is advantageous because it makes it possible to place the magnet as close as possible to the bottom of the breaking chamber and that the magnet has a fixed position with respect to the splitting plates.
- the interrupting chamber may further comprise a flow channel present inside the interrupting chamber.
- the flow channel is at least partly constituted by a magnetic piece extending towards the inlet of the interrupting chamber having for example an elongate shape.
- the presence of a flow channel is advantageous because it participates in the "extension" to the input of the breaking chamber of a maximum of magnetic field lines generated by the magnet.
- the Flow channeler thus further improves the attraction of an electric arc to the bottom of the interrupting chamber.
- the flow channel can be placed next to the magnet.
- the flow channel can be maintained in the magnet holder, and for example be in contact with the magnet. However, as will be apparent from the description below, such a configuration is not mandatory.
- Such a configuration is advantageous because it allows to have a breaking chamber whose breaking capacity is not affected by the direction by which the electric arc moves during the opening of the contacts and by the polarity of connection of the cut-off device.
- This configuration is particularly advantageous in direct current because of its invariance with respect to the branching polarity of the breaking device.
- the height of the magnet may be greater than or equal to half the height of the stack of the splitting plates. In this case, the height of the magnet may be less than or equal to or greater than the height of the stack of the splitter plates. Alternatively, the height of the magnet may be less than half the height of the stack of the splitting plates.
- a single magnet may be present inside the interrupting chamber.
- a plurality of permanent magnets may be present inside the interrupting chamber, at least one magnet of said plurality of magnets being present in the central zone in the width direction of the interrupting chamber and on the bottom side of it.
- the magnets of this plurality of magnets may or may not be in contact with each other.
- the magnets of the plurality of magnets may or may not have the same magnetization sense.
- the majority or all of the magnets of this plurality of magnets may be present in the central region in the width direction of the interrupting chamber and the bottom side thereof.
- the interrupting chamber may comprise one or more electrically insulating electric arc guiding cheeks, the guiding cheeks being located at the entrance to the interrupting chamber and covering all or part of the ends. splitting plates.
- the presence of one or more guiding cheeks is advantageous insofar as they allow the arc not to catch on the ends of the splitting plates and thus further improve the breaking performance by increasing elongation of the arc as well as its arc voltage.
- the guide or cheeks may be integral with the magnet support and for example made in one piece with the latter.
- the movable contact may be configured to rotate about an axis of rotation when the contacts are separated.
- the device may further comprise an arc horn present opposite the fixed contact, the width of the arc horn being greater than the width of the fixed contact.
- an arc generated between the contacts will tend to have a non-zero displacement component depending on the width of the breaking chamber.
- the generated arc will tend to be deflected with a non-zero component according to the rotation axis. It is therefore important that the arc horn be wider than the fixed contact so that the arc undergoing a deviation depending on the width of the arc chute may "hang" on the arc horn.
- the implementation of an arc horn can advantageously help to fractionate the electric arc by facilitating its entry into the interrupting chamber.
- the electric arc generated between the contacts has, in this case, a tendency to move from the fixed contact towards the arc horn and thus to get closer to the bottom of the breaking chamber.
- Another advantage related to the implementation of an arc horn is the reduction of the erosion of the fixed contact due to the arc due to a limited contact of the arc with the fixed contact.
- the height of the arc horn may be greater than or equal to the height of the fixed contact.
- the movable contact may be configured to rotate about an axis of rotation when the contacts are separated and a flow channel may be present within the interrupting chamber, the channel flux-type having a face located on the side of the contact zone which has, when the pipe is observed in a plane perpendicular to the axis of rotation, the same shape as the path traveled by the movable contact during the separation of the contacts.
- Such a configuration is advantageous because it makes it possible to maintain a constant distance between the flow channel and the moving contact during the separation of the contacts, which makes it possible to further improve the attraction of the arc in the interrupting chamber.
- the device may further comprise a flow channel present inside the interrupting chamber, at least a portion of the flow channel being constituted by an arc switching element present opposite. of the fixed contact, the width of the arc switching element being greater than the width of the fixed contact.
- the flow channel may comprise the arc switching element as well as an additional flow channeling element present in an electrically insulating duct support.
- Such configurations are advantageous because they make it possible to have both the "extension” effect towards the input of the breaking chamber of the magnetic field lines generated by the magnet, as well as assistance at the entrance of the arc in the interrupting chamber due to the implementation of the arc switching element.
- the device according to the invention makes it possible to cut an electric arc generated after circulation of a direct or alternating current between the contacts.
- FIG 1 an exploded view of a breaking chamber 1 according to the invention.
- the breaking chamber 1 comprises a stack of electric arc splitting plates 2 mounted on a sheet support 3.
- the mounting of the splitting plates 2 on the sheet support 3 makes it possible to form a rigid interrupting chamber 1.
- the splitting plates 2 are for example mild steel.
- the sheet support 3 may, for example, be made of vulcanized cardboard.
- the splitting plates 2 may alternatively be directly mounted on the housing constituting the outer casing of the cut-off device.
- the break chamber 1 illustrated at figure 1 comprises a plurality of stacked fractionation plates 2, for example at least three stacked fractionation plates 2, for example at least five stacked fractionation plates 2.
- the height h of the stack of the splitting plates 2 corresponds to the distance separating the two farthest splitting plates.
- the height h of the stack of the splitting plates 2 is measured perpendicular to the splitting plates 2.
- the breaking chamber 1 has an inlet 10 and a bottom 11 located on the opposite side to the inlet defined by the splitting plates 2.
- a permanent magnet 5 is present inside the breaking chamber 1.
- This magnet 5 is, for example, NdFeB.
- the magnet 5 is, as illustrated, present in an electrically insulating magnet support 7 intended to be present inside the breaking chamber 1.
- the magnet 5 may be as shown in FIG. figure 1 in the form of a bar. This bar may for example have a rectangular, square or circular cross section. As illustrated, the magnet 5 does not extend along the elongation planes of the splitting plates 2 but along the height h of the stack of the splitting plates 2.
- the magnet 5 extends, in the example illustrated, along a height h a , measured along the height h of the stack of fractionation sheets 2, greater than or equal to 50% of the height h of the stack of fractionation sheets 2
- the height h a of the magnet 5 is, for example, greater than or equal to 75% of the height h of the stack of the splitting plates, the height h a of the magnet 5 being, for example, substantially equal to at the height h of the stacking of the splitting plates.
- the height of the magnet is not limited to the configuration illustrated in FIG. figure 1 .
- the magnet may, in fact, have a height greater than the height of the stack of the splitting plates. Alternatively, the magnet may have a height less than the height of the stack of the splitting plates.
- the magnet may, for example, have a height less than half the height of the stack of the splitting plates and, in this case, the magnet can only be present in the lower part of the breaking chamber.
- a single magnet 5 is present inside the interrupting chamber 1, but it is not beyond the scope of the invention if a plurality of magnets are present inside the chamber. cut 1.
- the magnet support 7 is, for example, a plastic material.
- a flow channel 6 is, as illustrated, placed in contact with the magnet 5 and is also housed in the magnet holder 7.
- the magnet 5 and the flow channel 6 are electrically isolated by the magnet holder 7.
- the flow channel 6 is, for example, mild steel.
- the flow channel may or may not have a laminated structure.
- the magnet support 7 comprises interlocking means 9, for example in the form of crenellations, intended to cooperate by interlocking with all or part of the splitting plates 2. The interlocking of the magnet support 7 and the metal plates splitting 2 makes the magnet 5 fixed with respect to the splitting plates 2.
- FIG. figure 3 represents a sectional view of the cutting chamber of the Figures 1 and 2 perpendicularly to the height of the stack of the splitting plates 2.
- the splitting plates 2 have, as illustrated, a V shape when they are observed in a direction perpendicular to their elongation plane.
- the splitting plates may, alternatively, have another shape such as a U-shape when viewed in a direction perpendicular to their elongation plane.
- the depth p of the breaking chamber 10 which corresponds to the distance between the inlet 10 of the breaking chamber 1 and the bottom 11 of the breaking chamber 1 measured perpendicularly to the height h of the stack of the splitting plates 2
- the width L of the chamber of the breaking chamber 1 has also been represented, the width L being measured perpendicular to the height h of the stack of the splitting plates 2 and perpendicular to the depth p of the breaking chamber 1.
- the width L of the breaking chamber 1 corresponds to the internal width of the cutting chamber measured between the ends 2a and 2b of the splitting plates 2.
- the magnetization M of the magnet 5 (materialized by the arrow 15 to figures 1 and 3 ) has a non-zero component along an axis Y extending between the inlet 10 and the bottom 11 of the interrupting chamber (also called depth Y axis of the breaking chamber 1).
- the magnetization M may be included in the plane of elongation of the splitting plates 2.
- the magnetization M may be directed substantially only along the Y axis of the depth of the breaking chamber 1.
- the magnet 5 is as shown in a zone central Z c in the direction of the width of the breaking chamber 1.
- L denotes the width of the breaking chamber 1 and where x a and x b are measured along the width L of the breaking chamber 1 and taking as origin one of the ends 2a or 2b splitting 2.
- the magnet 5 is furthermore located on the bottom side 11 of the interrupting chamber, that is to say that it is closer to the bottom 11 of the breaking chamber 1 than to the inlet 10 of the the breaking chamber 1.
- the magnet 5 does not extend along the lateral edges 10a and 10b of the breaking chamber 1.
- the magnet 5 is, in the illustrated example, entirely located in the central zone Z c and on the bottom side 11 of the breaking chamber 1.
- FIG. figure 4 a cut-off device 20 according to the invention comprising a breaking chamber 1 as described in connection with the Figures 1 to 3 .
- the cutoff device 20 shown in FIG. figure 4 is a rotary cut with knives, double cut.
- the cut-off device 20 comprises a contact zone 21 in which movable contacts 22 present on compensation plates 23 can be brought into contact and separated from a fixed contact head 25 which is secured to a fixed support 26.
- contact head 25 and the fixed support 26 form a fixed subassembly for connecting the cut-off device 20 in an electrical installation.
- the fixed contact 25 is present opposite a single breaking chamber 1.
- the contact head 25 may be formed of a metallic material, for example copper.
- the outer casing of the cut-off device 20 is formed by a casing 28 corresponding to the union of two half-casings.
- the figure 4 also shows the electric arc 30 formed between the movable contacts 22 and the contact head 25 during the separation of these elements.
- a pressure cut-off device or a single-cut device with pressure or sliding contact it is possible to use a device with cut-off knife.
- figure 5 a 2D view of the magnetic field lines created by the magnet in a breaking chamber 1 as described in connection with the Figures 1 to 3 .
- This 2D view is a sectional view perpendicular to the height of the stack of the splitting plates 2.
- only a few field lines have been shown.
- the intensity of the magnetic field generated by the magnet 5 increases as one moves from the inlet 10 of the breaking chamber 1 to the bottom 11 of the breaking chamber 1 (the magnetic field lines become narrower).
- the arc is then deflected to another position because of the application of the Laplace force produced by the magnetic field generated by the magnet 5 (see position t2).
- the arc is, between the position t1 and the position t2, deflected with a non-zero displacement component according to the width of the breaking chamber (non-zero component along the axis of rotation of the contact mobile when implementing a rotating movable contact) due to the presence of the permanent magnet 5 in the breaking chamber 1.
- the arc then enters the breaking chamber 1 (see positions t3 and t4) and is accelerated in the breaking chamber 1 in particular between the positions t3 and t4. Elongation of the bow allows advantageously to increase the voltage of the arc before its splitting in the breaking chamber 1.
- the magnet 5 can be configured to accelerate the arc on at least 50% of the depth p of the breaking chamber 1. Once that the arc has penetrated into the breaking chamber 1, the arc is driven in a movement mainly according to the depth of the breaking chamber 1 as illustrated in FIG. figure 5 .
- the arc reaches the splitting plates 2 and is split in the breaking chamber 1. This splitting makes it possible to stabilize the arc as well as to cool it. Cooling further increases the impedance of the arc, generating even more arc voltage.
- the arc undergoes, in addition, another force than the Laplace force due to the magnetic field of the magnet 5, this other force is produced due to the presence of the splitting plates (swallowing U effect of the splitting plates).
- This force was not represented at the figure 5 but adds to the force produced by the magnet and also contributes to the displacement of the arc.
- the dashed curve 40 corresponds to the trajectory of movement of the electric arc during its deflection and attraction by the breaking chamber 1. As illustrated, the Laplace force exerted on the arc due to the presence of the magnet 5 makes it possible to deflect the arc towards the bottom 11 of the breaking chamber 1 and towards the central zone Z c in the direction of the width of the breaking chamber 1.
- the interrupting chamber according to the invention can be used to cut a direct current (“DC”) or alternating current (“AC”).
- the breaking chamber according to the invention can be used in the field of low voltage (U_AC ⁇ 1000V and U_DC ⁇ 1500V), as in the field of medium voltage (U_AC ⁇ 50 000V and U_DC ⁇ 75 000V).
- the breaking chamber 1 comprises a plurality of electric arc guiding cheeks 50.
- These guiding cheeks 50 are formed of an electrically insulating material and are located at the inlet 10 of the breaking chamber 1 and cover all or part of the ends 2a and 2b of the splitting plates 2.
- the guide cheeks 50 allow the arc not to catch on the ends 2a and 2b of the plates of splitting 2 and thus improve break performance.
- the dashed curve 40 corresponds to the trajectory of an electric arc in such a breaking chamber.
- the arc does not catch on the ends 2a and 2b of the splitting plates and is drawn towards the bottom 11 of the breaking chamber 1 towards a zone Z of fractionation.
- the guide cheeks 50 are integral with the magnet support 7 and for example formed in one piece with the latter.
- Figure 7A the use of an arc horn 60 which can be used in a breaking device 20 according to the invention which makes it possible to facilitate the entry of the electric arc into the breaking chamber 1.
- the arc horn 60 is placed facing the contact head 25 on the fixed support 26 at the inlet 10 of the breaking chamber 1.
- the arc horn 60 is fixed to the fixed support 26 by a mechanical connection.
- the arc horn 60 comprises a tab 61 and an arc switching portion 62.
- the arc horn is made of an electrically conductive material, for example a metallic material, for example 'steel.
- the tab 61 is in the illustrated example in contact with the fixed support 26 but it is not beyond the scope of the invention when the arc horn 60 is not in contact with the fixed support 26 but is fixed to the housing constituting the outer envelope of the cutoff device 20.
- the distance separating the arc horn 60 from the fixed support 26 may, for example, be less than or equal to 1 mm.
- An electric arc generated from the movable contacts 22 is intended to move on the arc switching portion 62. Such a displacement on the switching portion 62 facilitates the entry of the arc into the interrupting chamber 1
- the arc horn 60 further comprises a fixed surface 64 corresponding to the surface of the tab 61 located on the side opposite to the fixed support 26.
- the height of the arc horn hc (corresponding to the height at which the end 63 of the switching portion 62 is present) is greater than the height h t of the contact head.
- the heights h c and h t are measured from the surface S of the fixed support 26 opposite which the arc horn is present and perpendicular to this surface S.
- the height of the arc horn may be equal to or less than the height of the contact head.
- the width L c of the arc horn 60 is greater than the width L t of the contact head 25. This characteristic is important because, in the example illustrated, during the separation of the contacts, the arc generated will have tend to be deviated with a non-zero component along the axis of rotation of the moving contact due to the presence of the permanent magnet 5.
- the use of a wide arc horn 60 thus allows the deflected arc to the axis of rotation can "hang" on the arc horn 60.
- the arc is first deflected according to the axis of rotation of the moving contact (axial deviation) and the arc is then deflected according to the depth of the breaking chamber (radial deviation).
- the widths L c and L t of the arc horn and the contact head are measured perpendicular to their height and when the entrance to the face-cutting chamber is observed.
- the arc 30 switches on the switching portion 62 (the arc goes from the configuration A to the configuration B, see Figure 7C ).
- the arc goes from the configuration A to the configuration B, see Figure 7C ).
- another series arc can be created between the fixed support and the arc horn, either just behind the contact head or between the bracket and the fixed bracket.
- an arc horn 60 allows the displacement of the arc 30 in configuration B to promote the entry of the arc 30 into the breaking chamber 1.
- the presence of an arc horn improves the breaking performance by a rise in tension of the arc faster and therefore a faster cut.
- the arc 30 is first in the configuration B2, that is to say that it is present between the switching portion 62 and the movable contacts 22.
- the arc 30 then goes into the configuration C in which it is present in the breaking chamber 1 and is attracted to the bottom 11 of the chamber 1 by the superposition of the Laplace force from the magnetic field of the magnet and the Laplace force from its own geometry, its own current (loop effect) and the surrounding magnetic parts (U effect Swallowing the splitting plates 2).
- Such an evolution is materialized by the arc represented in configuration D at the Figure 7D .
- the Figure 7A illustrates, in addition, another advantageous feature of the present invention.
- the movable contact 22 rotates about an axis of rotation when the contacts 22 and 25 are separated.
- the axis of rotation is perpendicular to the plane of the sheet.
- the flow channel 6, present inside the breaking chamber 1 has a face F located on the side of the contact zone 21 which has, when the pipe 6 is observed in a plane perpendicular to the axis of rotation , the same shape as the path C traversed by the movable contact 22 during the separation of the contacts 22 and 25, that is to say a shape of an arc of a circle.
- such a configuration advantageously makes it possible to further improve the attraction of the arc in the interrupting chamber.
- the arc horn helps to break up the electric arc by facilitating its approach to the bottom of the arc chamber.
- Figures 8A and 8B an alternative embodiment in which the interrupting chamber 1 comprises a two-part flow channel 80 present inside thereof.
- the flow channel 80 comprises a first portion constituted by an electrically conductive arc switching element 82 and a second portion constituted by an additional flow channeling element 81 present in an electrically insulating duct support 70.
- the magnet 5 is, in the illustrated example, housed in the channel holder 70. In the example shown, the magnet 5 is mounted from the bottom of the support 70.
- the support 70 provides a protection of the magnet vis-à-vis the electric arc.
- the magnet 5 can thus be housed in the channeling support 70 (as described in connection with the Figures 8A and 8B ) or in the magnet support 7 as for example described in connection with the figure 1 .
- the arc switching element 82 is, as illustrated, present opposite the fixed contact 25 and has a width L e greater than the width L t of the fixed contact 25.
- the width L e is measured in the same manner as described. higher for widths L t and L c .
- the fact that the switching element 82 is wider than the fixed contact head 25 will allow an electric arc generated between the contacts 22 and 25 to switch on the switch element.
- the flow channel 80 advantageously makes it possible in the illustrated example to perform both the flux channeling function and the arc switching aid function.
- This system therefore allows the arc to switch on the arc switching element 82 because of its attraction in the breaking chamber 1 by the effect of the magnetic field generated by the magnet 5.
- the arc 30 moves from the fixed contact head 25 to the arc switching element 82.
- the arc then definitively switches to the breaking chamber 1 and is split as detailed above.
- the flow channel 80 has a face F located on the side of the contact zone which, when the duct 80 is observed in a plane perpendicular to the axis of rotation of the movable contact 22, has the same shape as the path C traveled by the movable contact 22 during the separation of the contacts 22 and 25.
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- Arc-Extinguishing Devices That Are Switches (AREA)
- Breakers (AREA)
Claims (15)
- Kammer (1) zur Lichtbogenunterbrechung, umfassend:- einen Stapel von Blechen (2) zur Aufteilung eines Lichtbogens, wobei die Bleche (2) zur Aufteilung einen Eingang (10) der Unterbrechungskammer (1), der dazu bestimmt ist, im Hinblick auf elektrische Kontakte (22; 25) vorzuliegen, und einen Boden (11) der Unterbrechungskammer (1) definieren, und- mindestens einen Dauermagneten (5), der im Inneren der Unterbrechungskammer (1) in einer zentralen Zone (Zc) in Richtung der Breite der Unterbrechungskammer (1) und aufseiten ihres Bodens (11) vorliegt, dadurch gekennzeichnet, dass der Magnet (5) eine Magnetisierung (15) aufweist, die gemäß einer Achse (Y), die sich zwischen dem Eingang (10) und dem Boden (11) der Unterbrechungskammer (1) erstreckt, eine Komponente aufweist, die ungleich null ist.
- Kammer (1) nach Anspruch 1, dadurch gekennzeichnet, dass der Magnet (5) in einem Magnethalter (7) gehalten wird, der elektrisch isoliert.
- Kammer (1) nach Anspruch 2, dadurch gekennzeichnet, dass der Magnethalter (7) durch eine Verschachtelung mit einem oder mehreren Aufteilungsblechen (2) zusammengesetzt ist.
- Kammer (1) nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass sie ferner eine Flusskanalisationsvorrichtung (6; 80) umfasst, die im Inneren der Unterbrechungskammer (1) vorliegt.
- Kammer (1) nach Anspruch 4, dadurch gekennzeichnet, dass die Flusskanalisationsvorrichtung (6) in dem Magnethalter gehalten wird.
- Kammer (1) nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass ein einziger Magnet (5) im Inneren der Unterbrechungskammer (1) vorliegt.
- Kammer nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass mehrere Dauermagnete im Inneren der Unterbrechungskammer vorliegen, wobei mindestens ein Magnet der mehreren Magnete in der zentralen Zone (Zc) in Richtung der Breite der Unterbrechungskammer (1) und aufseiten ihres Bodens (11) vorliegt.
- Kammer (1) nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, dass sie eine oder mehrere Backen (50) zur Führung des Lichtbogens umfasst, die elektrisch isolieren, wobei sich die Backen (50) zur Führung zwischen dem Eingang (10) der Unterbrechungskammer (1) befinden und die gesamten oder einen Teil der Enden (2a; 2b) der Aufteilungsbleche (2) abdecken.
- Kammer (1) nach einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, dass sie in Bezug auf eine Ebene (P) mit der Gleichung x = 0,5L symmetrisch ist, wobei L für die Breite der Unterbrechungskammer (1) steht und wobei x entlang der Breite L der Unterbrechungskammer (1) gemessen wird und wobei als Ursprung eines der Enden (2a; 2b) der Aufteilungsbleche (2) genommen wird.
- Unterbrechungsvorrichtung (20), umfassend:- eine Unterbrechungskammer (1) nach einem der Ansprüche 1 bis 9 und- eine Kontaktzone (21), in der mindestens ein fester Kontakt (25) und mindestens ein beweglicher Kontakt (22) in Bezug auf den festen Kontakt (25) vorliegen, wobei die Kontakte (22; 25) in Kontakt gebracht und voneinander getrennt werden können, wobei der feste Kontakt (25) gegenüber dem Eingang (10) der Unterbrechungskammer (1) vorliegt.
- Vorrichtung (20) nach Anspruch 10, dadurch gekennzeichnet, dass sie ferner ein Lichtbogenschutzhorn (60; 60') umfasst, das gegenüber dem festen Kontakt (25) vorliegt, wobei die Breite Lc des Lichtbogenschutzhorns größer ist als die Breite Lt des festen Kontakts (25).
- Vorrichtung (20) nach Anspruch 11, dadurch gekennzeichnet, dass die Höhe hc des Lichtbogenschutzhorns (60; 60') größer gleich der Höhe ht des festen Kontakts (25) ist.
- Vorrichtung (20) nach einem der Ansprüche 10 bis 12, dadurch gekennzeichnet, dass der bewegliche Kontakt (22) ausgestaltet ist, um eine Drehbewegung um eine Drehachse auszuführen, wenn die Kontakte (22; 25) getrennt sind, und dadurch, dass eine Flusskanalisationsvorrichtung (6; 80) im Inneren der Unterbrechungskammer (1) vorliegt, wobei die Flusskanalisationsvorrichtung (6; 80) eine Fläche (F) aufweist, die sich der Seite der Kontaktzone (21) befindet und, wenn die Kanalisationsvorrichtung (6; 80) in einer Ebene senkrecht zu der Drehachse beobachtet wird, die gleiche Form aufweist wie der Weg (C), den der bewegliche Kontakt (22) während der Trennung der Kontakte (22; 25) zurücklegt.
- Vorrichtung (20) nach einem der Ansprüche 10 bis 13, dadurch gekennzeichnet, dass sie ferner eine Flusskanalisationsvorrichtung (80) umfasst, die im Inneren der Unterbrechungskammer (1) vorliegt, wobei mindestens ein Teil der Flusskanalisationsvorrichtung (80) aus einem Lichtbogen-Kommutierungselement (82) besteht, das gegenüber dem festen Kontakt (25) vorliegt, wobei die Breite Le des Lichtbogen-Kommutierungselements (82) größer als die Breite Lt des festen Kontakts (25) ist.
- Vorrichtung (20) nach Anspruch 14, dadurch gekennzeichnet, dass die Flusskanalisationsvorrichtung (80) das Lichtbogen-Kommutierungselement (82) sowie ein zusätzliches Flusskanalisationsvorrichtungselement (81) umfasst, das in einem Kanalisationsvorrichtungshalter (70) vorliegt, der elektrisch isoliert.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR1460149A FR3027727B1 (fr) | 2014-10-22 | 2014-10-22 | Chambre de coupure d'arc electrique |
PCT/FR2015/052806 WO2016062959A1 (fr) | 2014-10-22 | 2015-10-20 | Chambre de coupure d'arc electrique |
Publications (2)
Publication Number | Publication Date |
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EP3210224A1 EP3210224A1 (de) | 2017-08-30 |
EP3210224B1 true EP3210224B1 (de) | 2019-07-24 |
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Application Number | Title | Priority Date | Filing Date |
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EP15791326.0A Active EP3210224B1 (de) | 2014-10-22 | 2015-10-20 | Lichtbogensteuerungsvorrichtung |
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US (1) | US10242814B2 (de) |
EP (1) | EP3210224B1 (de) |
CN (1) | CN107112153B (de) |
ES (1) | ES2750663T3 (de) |
FR (1) | FR3027727B1 (de) |
WO (1) | WO2016062959A1 (de) |
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PL3389067T3 (pl) * | 2017-04-11 | 2020-06-01 | Microelettrica Scientifica S.P.A. | Wyłącznik automatyczny szybki, do zastosowań przemysłowych i kolejowych |
EP3561837B1 (de) | 2018-04-24 | 2022-12-21 | ABB Schweiz AG | Elektrischer schalter |
CN109212284B (zh) * | 2018-11-21 | 2020-12-08 | 华侨大学 | 一种可精确控制的电弧故障发生系统的控制方法 |
CN109360755B (zh) * | 2018-11-26 | 2021-04-27 | 北京人民电器厂有限公司 | 灭弧机构及直流断路器 |
CN110120285B (zh) * | 2019-06-12 | 2020-03-31 | 西南交通大学 | 一种招弧角灭弧装置 |
KR102558812B1 (ko) * | 2020-03-13 | 2023-07-24 | 엘에스일렉트릭(주) | 아크 소호부 및 이를 포함하는 기중 차단기 |
KR102556750B1 (ko) * | 2020-03-20 | 2023-07-18 | 엘에스일렉트릭(주) | 아크 소호 조립체 및 이를 포함하는 차단기 |
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FR2378344A1 (fr) * | 1977-01-25 | 1978-08-18 | Telemecanique Electrique | Piece de soufflage |
FR2916571B1 (fr) * | 2007-05-22 | 2009-09-11 | Schneider Electric Ind Sas | Chambre de coupure et disjoncteur equipe d'une telle chambre de coupure |
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. |
EP2463876A1 (de) * | 2010-12-07 | 2012-06-13 | Eaton Industries GmbH | Schalter mit Löschkammer |
US8222983B2 (en) * | 2010-12-08 | 2012-07-17 | Eaton Corporation | Single direct current arc chamber, and bi-directional direct current electrical switching apparatus employing the same |
EP2654059B1 (de) * | 2010-12-16 | 2015-11-04 | Mitsubishi Electric Corporation | Elektrische stromschaltvorrichtung |
US8866034B2 (en) * | 2011-04-14 | 2014-10-21 | Carling Technologies, Inc. | Arc runner with integrated current path that develops a magnetic field to boost arc movement towards splitter plates |
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 |
US20130011265A1 (en) * | 2011-07-05 | 2013-01-10 | Alstom Technology Ltd. | Chevron platform turbine vane |
JP5784404B2 (ja) * | 2011-07-29 | 2015-09-24 | オリンパス株式会社 | 画像処理装置、画像処理方法、及び画像処理プログラム |
WO2013070465A1 (en) * | 2011-11-09 | 2013-05-16 | Eaton Corporation | Electrical switching apparatus including magnet assembly and first and second arc chambers |
US8847096B2 (en) * | 2012-09-05 | 2014-09-30 | Eaton Corporation | Single direct current arc chute, and bi-directional direct current electrical switching apparatus employing the same |
DE102012112202A1 (de) * | 2012-12-13 | 2014-06-18 | Eaton Electrical Ip Gmbh & Co. Kg | Polaritätsunabhängiges Schaltgerät zum Führen und Trennen von Gleichströmen |
-
2014
- 2014-10-22 FR FR1460149A patent/FR3027727B1/fr not_active Expired - Fee Related
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2015
- 2015-10-20 EP EP15791326.0A patent/EP3210224B1/de active Active
- 2015-10-20 US US15/521,373 patent/US10242814B2/en active Active
- 2015-10-20 ES ES15791326T patent/ES2750663T3/es active Active
- 2015-10-20 CN CN201580069654.2A patent/CN107112153B/zh active Active
- 2015-10-20 WO PCT/FR2015/052806 patent/WO2016062959A1/fr active Application Filing
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Also Published As
Publication number | Publication date |
---|---|
CN107112153A (zh) | 2017-08-29 |
US10242814B2 (en) | 2019-03-26 |
FR3027727A1 (fr) | 2016-04-29 |
ES2750663T3 (es) | 2020-03-26 |
FR3027727B1 (fr) | 2016-12-09 |
CN107112153B (zh) | 2019-08-09 |
US20170309417A1 (en) | 2017-10-26 |
WO2016062959A1 (fr) | 2016-04-28 |
EP3210224A1 (de) | 2017-08-30 |
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