EP1887667A1 - Zündvorrichtung mit zwei Elektroden für Funkenstrecke und entsprechende Verfahren - Google Patents

Zündvorrichtung mit zwei Elektroden für Funkenstrecke und entsprechende Verfahren Download PDF

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Publication number
EP1887667A1
EP1887667A1 EP07356113A EP07356113A EP1887667A1 EP 1887667 A1 EP1887667 A1 EP 1887667A1 EP 07356113 A EP07356113 A EP 07356113A EP 07356113 A EP07356113 A EP 07356113A EP 1887667 A1 EP1887667 A1 EP 1887667A1
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EP
European Patent Office
Prior art keywords
trigger element
electrical component
electrode
main
spark gap
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EP07356113A
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English (en)
French (fr)
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EP1887667B2 (de
EP1887667B1 (de
Inventor
Jean Bernard Ducourneau
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ABB France SAS
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ABB France SAS
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01T—SPARK GAPS; OVERVOLTAGE ARRESTERS USING SPARK GAPS; SPARKING PLUGS; CORONA DEVICES; GENERATING IONS TO BE INTRODUCED INTO NON-ENCLOSED GASES
    • H01T2/00—Spark gaps comprising auxiliary triggering means
    • H01T2/02—Spark gaps comprising auxiliary triggering means comprising a trigger electrode or an auxiliary spark gap
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01T—SPARK GAPS; OVERVOLTAGE ARRESTERS USING SPARK GAPS; SPARKING PLUGS; CORONA DEVICES; GENERATING IONS TO BE INTRODUCED INTO NON-ENCLOSED GASES
    • H01T1/00—Details of spark gaps
    • H01T1/14—Means structurally associated with spark gap for protecting it against overload or for disconnecting it in case of failure

Definitions

  • the present invention relates to the general technical field of devices for protecting installations and electrical equipment against overvoltages, especially against transient overvoltages due to lightning.
  • the present invention more particularly relates to an electrical component comprising at least a first and a second main electrode forming a spark gap.
  • the present invention also relates to a device for protecting an electrical installation against overvoltages, said device being provided with a first and a second connection terminal intended to be connected to said electrical installation.
  • the present invention also relates to a method of triggering an electrical component comprising at least a first and a second main electrode forming a spark gap.
  • the present invention finally relates to a method of manufacturing an electrical component comprising a step of producing at least a first and a second main electrode forming a spark gap.
  • surge arrester or " surge protector” have the essential purpose of grounding fault currents and clipping the overvoltages to values compatible with the behavior of the installation electrical equipment and the equipment to which they are connected.
  • Known surge arresters may be based on different technologies depending on the nature of the protection component they implement.
  • spark gap arresters are known, that is to say using as protection component a device comprising two electrodes placed facing each other, one being electrically connected to the phase to be protected while the the other is electrically connected to the earth. Said electrodes are separated by an insulating zone, formed for example by a gas strip, such as air, or by a dielectric body.
  • This ignition voltage which depends in particular on the distance separating the two electrodes forming the spark gap, is particularly high, generally of the order of several kilovolts.
  • a spark gap arrester can only trip and discharge the fault current to ground when the overvoltage applied to its terminals exceeds the starting voltage.
  • the existence of such a trip threshold has the consequence that the electrical installation to which the spark gap arrester is connected may be exposed, repeatedly, to overvoltages whose value lies between the nominal voltage of operation and the starting voltage.
  • spark gap arresters In order to reduce the starting voltage of spark gap arresters, which in particular means reducing their response time with respect to transient overvoltages, it is known to provide these arresters with pre-triggering auxiliaries which favor the firing an arc when the spark gap is subjected to a surge.
  • the voltage necessary to create a certain spark between the needle and the main electrode is about 7 kilovolts if the distance between said needle and said main electrode is 2 millimeters.
  • the weather necessary to establish an electric arc between the two main electrodes is then of the order of 7 to 8 microseconds.
  • the arresters of the prior art generally use electronic trigger circuits, which often prove to be a weak point of said surge arresters, both technically and on the economic plan.
  • the known tripping circuits which often use a large number of expensive components, are particularly sensitive to the stresses to which they are subjected during the operation of the arrester and age rapidly when they are stressed for the purpose of the flow of fault currents. This relative fragility of the trip circuit tends in practice to prematurely cause the failure of the arrester as a whole, even though the main protective spark gap is still functional.
  • the triggering time of the known spark gap arresters remains relatively high with respect to the characteristic durations of the transient disturbances, so that the level of protection conferred by them remains relatively poor.
  • spark gap arresters can not generally be used as " Type 2 " surge arresters, that is to say as secondary arresters which offer resistance to currents of Indirect lightning (modeled by a 8/20 shock wave) and whose role is to clip overvoltages so that they are not dangerous for sensitive electrical equipment.
  • varistor-type protection components which are particularly expensive and less enduring than spark-gaps vis-à-vis the lightning strikes.
  • the objects assigned to the invention are therefore intended to remedy the various disadvantages listed above and to propose a new electric spark gap type component which has an improved priming capability.
  • Another object of the invention is to provide a new electric spark gap type component which is particularly simple, compact design and which has an optimized cost.
  • Another object of the invention is to propose a new electric spark gap type component which simplifies the installation and maintenance operations.
  • Another object of the invention is to propose a new device for protecting an electrical installation against overvoltages which confers an optimized level of protection to the installation to which it is connected.
  • Another object of the invention is to provide a new device for protecting an electrical installation against overvoltages that is simple in design and has an optimized cost.
  • Another object of the invention is to provide a new device for protecting an electrical installation against overvoltages which has an increased longevity.
  • Another object of the invention is to propose a new method of triggering an electric spark gap type component that optimizes the initiation of said spark gap.
  • Another object of the invention is to provide a method of manufacturing a spark gap type electrical component which has an improved priming capability.
  • Another object of the invention is to provide a method of manufacturing a spark gap type electric component that is simple and inexpensive to implement.
  • an electrical component comprising at least a first and a second main electrode forming a spark gap, characterized in that it comprises at least a first trigger element and a second element both of which are separate from said first and second main electrodes, said first and second trigger elements being arranged such that a disruptive discharge can occur between them and that the occurrence of said disruptive discharge can cause the initiation of a electric arc between the first and second main electrodes.
  • the objects assigned to the invention are also achieved by means of a device for protecting an electrical installation against overvoltages, said device being provided with a first and a second connection terminal intended to be connected to said electrical installation, characterized in that it comprises at least one electrical component according to the present invention, the first and the second main electrode of said electrical component being electrically connected to said electrical installation to be protected via said first and second connection terminals.
  • the objects assigned to the invention are also achieved by means of a method of triggering an electrical component comprising at least a first and a second main electrode forming a spark gap, characterized in that it comprises a step (a). ) during which a disruptive discharge is generated between at least a first trigger element and a second trigger element, both of which are distinct from said first and second main electrodes, so that the occurrence of said disruptive discharge can cause the ignition of an electric arc between the first and second main electrodes of said spark gap.
  • an electrical component comprising a step of producing at least a first and a second main electrode forming a spark gap, characterized in that it comprises a step (E 1 ) during which said spark gap is associated with at least one first trigger element and a second trigger element, both of which are distinct from said first and second main electrodes and a step (E 2 ) during wherein said first and second trigger elements are arranged so that a disruptive discharge can occur between them and that the occurrence of said disruptive discharge can cause the initiation of an electric arc between the first and second main electrodes.
  • the electrical component 1 comprises at least a first main electrode 2 and a second main electrode 3, said main electrodes being arranged to form a spark gap 4.
  • Said first and second main electrodes are separated by an inter-electrode space 5 formed of an insulating material, such as gas, in particular air, or a dielectric solid body.
  • an insulating material such as gas, in particular air, or a dielectric solid body.
  • the electrical component 1 comprises at least a first trigger element 10 and a second trigger element 11, both of which are distinct from said first and second main electrodes 2, 3, and arranged in such a way that a disruptive discharge 12 may appear between them and the appearance of said disruptive discharge 12 may cause the initiation of an electric arc 6 between the first and second main electrodes 2, 3.
  • the use of a pair of trigger elements 10, 11 separate from the main electrodes 2, 3 facilitates the appearance of the arc. electrical 6 by accelerating the ionization of the inter-electrode space 5 and reducing the necessary starting voltage between the first and the second main electrode, compared to what would be observed in a spark gap comprising two main electrodes and a single trigger element.
  • such an arrangement according to the invention is also likely to limit the intensity of the electric current flowing through the triggering elements 10, 11.
  • the first trigger element 10 is formed by a first auxiliary electrode 14.
  • the second trigger element 11 is preferably formed by a second auxiliary electrode 15.
  • the first and second triggering elements 10, 11 extend, at least in part, into the inter-electrode space 5 which separates the first main electrode 2 from the second main electrode 3.
  • the electrical environment between said auxiliary electrodes 2, 3 can be modified, in particular by ionizing the corresponding part of the internal space. electrodes 5, and thus create, in the vicinity of the main electrodes 2, 3, conditions conducive to the initiation of an electric arc 6.
  • the first and second main electrodes 2, 3 delimit a flared, preferably substantially V-shaped, inter-electrode space 5, said inter-electrode gap 5 extending between a narrow section 5A and a wide section 5B.
  • This variant embodiment of the electrical component 1 according to the invention is therefore particularly suitable for the production of a device of the lightning arrestor type intended firstly to rapidly discharge the fault current caused by the arc 6 to the ground. by an overvoltage affecting an electrical installation to be protected and on the other hand to extinguish the electric arc just after the flow of said fault current to cut the current away and ensure continuity of service.
  • the first and the second trigger elements 10, 11 are preferably located at the narrow section 5A of the inter-electrode space 5.
  • to show the disruptive discharge 12 in the vicinity of said narrow section 5A, in particular at the base of the V formed by the main electrodes 2, 3 advantageously makes it possible to exploit the zone of the most favorable spark gap 4 at the appearance of the electric arc 6.
  • the electrical component 1 according to the invention is in no way limited to a particular geometry of the main electrodes 2, 3, nor to any particular arrangement of the auxiliary electrodes 14, 15.
  • the first and the second second trigger element 10, 11 can be recessed, flush or project into the inter-electrode space 5.
  • the assembly formed by the first and second trigger elements 10, 11 is substantially centered between the first and the second main electrode 2, 3.
  • the first and the second auxiliary electrode 14, 15 are preferably arranged substantially symmetrically with respect to said plane P.
  • the main electrodes 2, 3 consist of substantially flat conductive strips arranged opposite one another so as to form a V whose sagittal plane also corresponds to the sagittal plane of the pair. of auxiliary electrodes 14, 15.
  • the smallest functional distance d 1 which separates the first trigger element 10 from the second trigger element 11 is substantially smaller than the smallest functional distance d 2 which separates the first main electrode 2 from the second main electrode 3 .
  • the minimum functional distance d 1 will preferably correspond to the gap between the active tip 14A of the first auxiliary electrode 14 and the active tip 15A of the second auxiliary electrode 15. that is to say between the ends of said auxiliary electrodes between which it is sought to show the disruptive discharge 12 (shown in dashed lines).
  • the auxiliary electrodes 14, 15 may be coated or surrounded by an insulating sheath outside their active tips 14A, 15A which remain exposed, so that the disruptive discharge 12 can appear only in a predetermined functional zone, located substantially at said active points 14A, 15A.
  • the auxiliary electrodes 14, 15 may be generally parallel and have locally a zone of approach, such as a constriction consisting of two conductive protuberances projecting towards each other from said auxiliary electrodes, so that the disruptive discharge 12 will appear preferentially at said approach zone.
  • the functional distance separating the main electrodes 2, 3 in the variant embodiment shown in FIG. 1 will correspond to the (variable) spacing of the branches of the V, the minimum functional distance d 2 being measured at the sectional level. narrow 5A of said V.
  • the voltage required to cause the occurrence of a disruptive discharge 12 between the first and the second trigger element 10, 11 distant from d 1 is advantageously lower than that required for the initiation of an electric arc 6 between the main electrodes 2, 3 distant from d 2 .
  • the triggering elements 10, 11, and more particularly the active tips 14A, 15A of the auxiliary electrodes are sufficiently distant from the main electrodes 2, 3 to avoid any parasitic electric arc formation, c that is, a short-circuit between a trigger element 10, 11 and a main electrode 2, 3, in the normal operation of the component 1.
  • the preferential spatial arrangement of the elements 10, 11 and main electrodes 2, 3 prevents the main electric arc 6 " catches " one of the auxiliary electrodes 14, 15 and is established between a main electrode and an auxiliary electrode .
  • the component 1 according to the invention makes it possible to dissociate substantially the control circuit, serving to stimulate the initiation by means of an ephemeral disruptive discharge, of the power circuit by which flow strong currents.
  • the component 1 according to the invention can advantageously make it possible to separate the tripping and flow functions by dedicating each to a separate circuit.
  • the triggering elements 10, 11, and more particularly the auxiliary electrodes 14, 15, can then advantageously be designed to cause and support " only " a disruptive discharge 12 of moderate power and short duration (spark), while the main electrodes 2, 3 are designed to be able to discharge a high intensity electric current in the form of a relatively more durable electric arc 6, in particular caused by a transient surge due to lightning .
  • the distance d 1 is less than 30% of the distance d 2 , and even more preferably between 10% and 20% of the distance d 2 .
  • the minimum functional distance d 1 separating the first trigger element 10 from the second trigger element 11, and more particularly the first auxiliary electrode 14 from the second auxiliary electrode 15, is between 0.4 mm. and 1 mm, while the smallest functional distance d 2 separating the main electrodes 2, 3 is about 3.5 mm.
  • An electrical component 1 according to the invention can therefore advantageously be used for the production of Type 2 surge arresters. Indeed, since such a component allows the early initiation of an electric arc 6 between its main electrodes. 2, 3 when subjected to an overvoltage caused by lightning, that is to say it has a relatively low ignition voltage, it offers a level of protection perfectly compatible with the holding of electrical equipment relatively sensitive.
  • the main electrodes 2, 3 and the triggering elements 10, 11 are integrated in the same insulating casing having at least four electrical connection poles, for example pins projecting from a face of said casing, of which two are respectively connected to the first and second main electrodes 2, 3 and two are respectively connected to the first and second trigger elements 10, 11.
  • the component 1 can therefore advantageously be in the form of a removable cartridge intended for example to be plugged onto a fixed base.
  • Such an arrangement confers an interchangeability component 1 and therefore facilitates its implementation or its replacement during operations installation or maintenance of the electrical equipment in which it is used.
  • the electrical component 1 may constitute an encapsulated spark gap closed at atmospheric pressure or a sealed spark gap GDT (Gas Discharge Tube).
  • GDT Gas Discharge Tube
  • spark gap 4 and trigger elements 10, 11 has mainly been described.
  • shape, the dimensions and the arrangement of electrical component 1, and in particular those of main electrodes 2 , 3 and release elements 10, 11, may be subject to modifications or adaptation without departing from the scope of the present invention.
  • the present invention also relates to the particular use of an electrical component 1 as described above within a protection device 20 of an electrical installation against overvoltages, especially against transient overvoltages due for example to lightning.
  • electrical installation refers to any type of device or network powered electrically and likely to experience voltage disturbances, including transient overvoltages due to lightning.
  • the protective device 20 according to the invention may therefore in particular constitute a surge arrester.
  • the device 20 may advantageously constitute a Type 2 surge arrester in the sense of the IEC 61643-1 standard.
  • spark gap 4 as a protection component in this type of arrester advantageously makes it possible to reconcile increased endurance and lower cost of the device 20 with respect to the Type 2 surge arresters of the prior art which resorts to varistors to form the power circuit.
  • the protection device 20 is in particular intended to be connected bypass (" in parallel ”) on the electrical installation to be protected, and more particularly to be arranged between a phase of the installation to be protected and the earth . It is also conceivable, without departing from the scope of the invention, that the device 1 is connected between the neutral and the earth, between the phase and the neutral, or between two phases to achieve a differential protection.
  • first connection terminal 21 In order to allow the electrical connection of said device 20 to said electrical installation, it is provided with a first connection terminal 21 and a second connection terminal 22.
  • the protective device 20 comprises at least one electrical component 1 according to the invention, the first and the second main electrode 2, 3 of said electrical component 1 being electrically connected to said electrical installation to be protected. via said connection terminals 21, 22.
  • connection terminals 21, 22 may be doubled to allow for example the simultaneous electrical connection to each said terminals 21, 22 of two separate conductive elements, such as cables, in particular from the installation to be protected.
  • connection terminal 21, 22 and the corresponding main electrode 2, 3 may be direct or indirect.
  • other components in series with the electrical component 1 according to the invention may be associated with other components in series with the electrical component 1 according to the invention.
  • the protection device 20 comprises activation means 23 connected to the first and second triggering elements 10, 11 to generate a disruptive discharge 12 between said first and second triggering elements 10, 11 so as to cause the initiation of an electric arc 6 between the first and second main electrodes 2, 3.
  • said activation means 23 is sensitive to the voltage applied to the connection terminals 21, 22 of the device 20 and designed to generate a disruptive discharge 12 between the first and second triggering elements 10, 11 when said voltage passes a predetermined threshold.
  • the activation means 23 is designed to create a potential difference between the first and the second trigger element 10, 11 and more particularly between the first and the second auxiliary electrode 14, 15.
  • the first or the second trigger element 10, 11 may be electrically connected to the secondary circuit of a transformer TX1 so that it is possible to vary the potential of said trigger element by circulating an electric current. in the primary circuit of said first transformer TX1.
  • the activation means 23 comprise an electronic circuit combining in parallel a gas spark gap 24 and a capacitor C 1 so that, when said gas spark gap 24 is triggered, it bypasses said capacitor C 1 which discharges into the primary circuit of the transformer TX1.
  • the protection device 20 is not limited to a particular embodiment of the activation means 23, other schemes that can be envisaged to generate an electric field, and in particular a voltage pulse, between the auxiliary electrodes 14, 15.
  • the protection device 20 makes it possible to separate the control circuit comprising the activation means 23 and the trip elements 10, 11 of the power circuit formed by the main electrodes 2, 3.
  • the separation can also be carried out or supplemented by separation means, for example electronic means, capable of providing a limitation of the intensity of the current flowing in the control circuit, and thus avoiding in particular that said control circuit does not spontaneously tend to short circuit all or part of the power circuit.
  • separation means for example electronic means, capable of providing a limitation of the intensity of the current flowing in the control circuit, and thus avoiding in particular that said control circuit does not spontaneously tend to short circuit all or part of the power circuit.
  • separation means for example electronic means, capable of providing a limitation of the intensity of the current flowing in the control circuit, and thus avoiding in particular that said control circuit does not spontaneously tend to short circuit all or part of the power circuit.
  • separation means for example electronic means, capable of providing a limitation of the intensity of the current flowing in the control circuit, and thus avoiding in particular that said control circuit does not spontaneously tend to short circuit all or part of the power circuit.
  • FIG. 3 differs from that illustrated in FIG. 2 only by the arrangement of the varistors V 1 , V 2 , V 4 which makes it possible to define the limits and the distribution of the electric current likely to flow in the first auxiliary electrode 14 and in the gas spark gap 24.
  • control circuit 10, 11, 23 according to the invention is not stressed at each boot cycle of the spark gap 4, both in power and duration.
  • the activation means 23 is formed by a first varistor V 5 which, preferably directly connects the first connection terminal 21 to the first element 10 and a second varistor V 6 which connects, preferably directly, the second connection terminal 22 to the second trigger element 11.
  • Such an activation means unlike those capable of being implemented on the basis of the variants shown in FIGS. 2 and 3, does not have a voltage amplifier TX1, and simply exploits the priming phenomenon.
  • the rapidity of appearance of said disruptive discharge 12 due to the proximity of said auxiliary electrodes, and the effectiveness of the ionization of the inter-electrode space 5 which results gives this variant of the device 20 performance in terms of response time significantly greater than that of a spark gap 4 alone .
  • the first and the second varistor V 5 , V 6 simultaneously fulfill the roles of activation means 23 and separation means with respect to the power circuit.
  • the protection device 20 may comprise operating indicators 26, as well as safety fusible bridges 25 intended to open the power circuit and / or the power circuit. control in the case where it flows abnormally durable current or abnormally high intensity, for example when the spark gap 4 reaches the end of life under the effect of a conductive pollution.
  • the device 20 can comprise a first and a second branch 20A, 20B, each branch containing a component 1, 1 'as described above. above respectively associated with a corresponding activation means 23, 23 '.
  • Said first and second branches 20A, 20B are preferably associated in series to connect together the connection terminals 21, 22 and thus form a power circuit comprising two successive spark gaps 4, 4 '.
  • the elements of the second branch 20B repeat the references of their counterparts of the first branch 20A, with a symbol "'" (prime).
  • the device 20 thus obtained corresponds to the " mirror " association of two identical " simple " devices, for example similar to that illustrated in FIG.
  • the gaps 4, 4 ' can be electrically connected to each other by means of a " comb " 30 forming the midpoint of the power circuit.
  • the common of the transformer TX1 of the activation circuit 23 of the first branch 20A will preferably be electrically connected to the second connection terminal 22 by a first connecting element 31, while the common of the transformer TX1 'of the circuit d 'activation 23' of the second branch 20B will preferably be electrically connected to the first connection terminal 21 by a second connecting element 32.
  • the respective activation means 23, 23 ' are preferably arranged to cooperate in order to cause the simultaneous appearance, between the first and second triggering elements 10, 11, 10', 11 'of each two gaps 4, 4 ', a disruptive discharge 12, 12', so as to place substantially simultaneously said spark gaps in conditions conducive to their respective priming.
  • the assembly formed by the two branches 20A, 20B can advantageously switch quickly to its on state to discharge the fault current, the device 1 having more particularly a global response time, between the occurrence of a surge at its connection terminals 21, 22 and the flow of the fault current through the gaps 4, 4 'between said terminals 21, 22, substantially equal to the response time of a single branch considered separately.
  • the starting voltage of the assembly formed by the two branches 20A, 20B in series will be substantially equal to the ignition voltage of only one of said branches, and not randomly between the voltage of initiation of a branch and the sum of the respective starting voltages of each of the two branches.
  • Such an arrangement therefore makes it possible either to increase the nominal voltage (operating voltage) at the terminals 21, 22 of the device 20 without increasing the starting voltage of the latter or reducing its breaking capacity of the current (after the flow of the defect), or, conversely, to improve the breaking capacity of the device 20 for a given operating voltage.
  • the protection component 1 When the device 20 is electrically connected to an electrical installation to be protected by means of its connection terminals 21, 22, the protection component 1 can be traversed by a discharge current.
  • the protective component 1, and more particularly the spark gap 4 is in its blocking state.
  • the transformer TX1 converts, and preferably amplifies, this current pulse into a voltage pulse applied to the second auxiliary electrode 15, such that a potential difference occurs between the first and the second auxiliary electrode 14, 15.
  • the electrical power and more particularly the intensity of the current flowing through the trip elements 10, 11 during their activation remains moderate thanks to the separation varistors V 1 , V 2 , V 3 .
  • This avoids, in particular, the formation of a high-power arc between the auxiliary electrodes 14, 15, which would have the double negative consequence of disrupting the operation of the installation to be protected because of the difficulty it It would have to be extinguished because of the mutual proximity of said auxiliary electrodes 14, 15, and secondly to cause accelerated aging, or even destruction, of the control circuit.
  • This ionization of the inter-electrode space 5 facilitates the switching of the spark gap 4 in its conducting state. It indeed leads to the initiation of an electric arc 6 between the main electrodes 2, 3 for a priming voltage applied between said main electrodes 2, 3 much lower than that which would be necessary for the breakdown of the insulation filling the inter-electrode gap 5 in the absence of the trigger elements 10, 11 (or in the absence of activation thereof). Thus, the response time of the device 20 is considerably shortened.
  • the spark gap 4 When the arc 6 is initiated, the spark gap 4 is able to discharge the high intensity fault current caused by the overvoltage.
  • control circuit according to the invention is solicited for a very short time due to the rapidity of the priming of the arc 6 and therefore the transfer of the energy flow of said control circuit to said power circuit.
  • the electric arc 6 formed between the main electrodes 2, 3 tends to be blown towards the interrupting chamber 16 which facilitates its extinction after the flow of the fault current.
  • the present invention also relates to a method of triggering an electrical component 1 comprising at least a first and a second main electrode 2, 3 forming a spark gap 4.
  • said triggering method comprises a step (a) during which there is shown a disruptive discharge 12 between at least a first trigger element 10 and a second trigger element 11, both distinct said first and second main electrodes 2, 3, the occurrence of said disruptive discharge 12 which can cause priming an electric arc between the first and second main electrodes 2, 3 of said spark gap 4.
  • step (a) comprises a substep (a 1 ) during which a potential difference is applied between a first auxiliary electrode 14 and a second auxiliary electrode 15 which extend, at least in part, in the inter-electrode space 5 which separates the first main electrode 2 from the second main electrode 3.
  • said triggering method when applied to an electrical component 1 according to the invention within an overvoltage protection device 20 as described above, may constitute a method of protecting an installation electrical surge protection.
  • said method may comprise a step (b) in which the voltage applied to the connection terminals 21, 22 is evaluated and it is decided to implement step (a) if said voltage exceeds a value predetermined threshold.
  • the steps (a) and (b) can be intimately linked by the use of an activation means 23 sensitive to the voltage applied to the connection terminals 21, 22, as described above, in order to stimulate the initiation of an electric arc 6 concomitantly with the appearance of an overvoltage audites terminals 21, 22.
  • the present invention also relates to a method of manufacturing an electrical component 1 comprising a step of producing at least a first and a second main electrode 2, 3 forming a spark gap 4, said manufacturing method comprising a step (E 1 ) during which said spark gap 4 is associated with at least a first trigger element 10 and a second trigger element 11, both distinct from said first and second main electrodes 2, 3, as well as a step (E 2 ) during which said first and second triggering elements 10, 11 are arranged in such a way that a disruptive discharge can occur between them and that the occurrence of said disruptive discharge can cause the initiation of an electric arc 6 between the first and second main electrodes 2, 3.
  • steps (E 1 ) and (E 2 ) can advantageously be simultaneous and merged.
  • the step (E 1 ) may comprise a substep during which the spark gap 4 formed by said first and second main electrodes 2 3 prefabricated subassembly comprising the first and the second triggering element 10, 11.
  • a new trigger subassembly comprising for example two auxiliary electrodes 14, 15 held in a base insulating of appropriate dimensions, said base being connectable between the main electrodes 2, 3 of the existing spark gap.
  • the aforementioned manufacturing method can be implemented for the production of an overvoltage protection device 20 according to the invention, and constitute for example a lightning arrester manufacturing method.
  • such a method of manufacturing an overvoltage protection device 20 further comprises a step (E 3 ) during which the auxiliary electrodes 14, 15 are electrically connected to an activation means 23 as previously described.
  • the electrical component 1 according to the invention advantageously makes it possible to provide particularly effective overvoltage protection devices which make it possible to reconcile the good resistance of spark gaps with respect to lightning currents with a low starting voltage.
  • the excellent level of protection afforded by the electrical component according to the invention allows in particular its use in Type 2 surge arresters according to the IEC 61643-1 standard.
  • Such surge arresters in accordance with the invention combine robustness and simplicity, and therefore have increased durability and reduced manufacturing cost, particularly with respect to prior art devices which employ varistors as protection components.
EP07356113.6A 2006-08-11 2007-08-09 Zündvorrichtung mit zwei Elektroden für Funkenstrecke und entsprechende Verfahren Active EP1887667B2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR0607316A FR2904893B1 (fr) 2006-08-11 2006-08-11 Dispositif d'amorcage a deux electrodes pour eclateur et procedes correspondants

Publications (3)

Publication Number Publication Date
EP1887667A1 true EP1887667A1 (de) 2008-02-13
EP1887667B1 EP1887667B1 (de) 2010-05-19
EP1887667B2 EP1887667B2 (de) 2014-01-22

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EP (1) EP1887667B2 (de)
AT (1) ATE468639T1 (de)
DE (1) DE602007006597D1 (de)
FR (1) FR2904893B1 (de)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102299484A (zh) * 2010-04-30 2011-12-28 Abb法国公司 用于提前放电避雷器的保护罩
CN102769253A (zh) * 2011-05-05 2012-11-07 Abb研究有限公司 用于快速闭合电路的装置和方法以及该装置的用途
US20160079026A1 (en) * 2014-09-16 2016-03-17 Abb France Cut-off member of a device for protecting an electric installation against lightning
DE102017218584A1 (de) * 2017-10-18 2019-04-18 Phoenix Contact Gmbh & Co. Kg Gasgefüllter Überspannungsableiter
CN110391648A (zh) * 2018-04-23 2019-10-29 Abb瑞士有限公司 构造成允许放电电流循环的保护装置

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FR2770939A1 (fr) * 1997-11-12 1999-05-14 Soule Materiel Electr Dispositif eclateur pour la protection de lignes electriques et/ou d'appareils electriques contre des surtensions temporaires
FR2864711A1 (fr) * 2003-12-30 2005-07-01 Soule Protection Surtensions Dispositif de protection contre les surtensions avec eclateurs en parallele a declenchement simultane
FR2873509A1 (fr) * 2004-07-26 2006-01-27 Soule Prot Surtensions Sa Dispositif de protection contre les surtensions a capacite de coupure du courant de fuite ameliore
FR2873865A1 (fr) * 2004-07-27 2006-02-03 Soule Prot Surtensions Sa Dispositif de protection contre les surtensions a pouvoir de coupure ameliore
FR2880468A1 (fr) * 2005-01-04 2006-07-07 Soule Prot Surtensions Sa Appareil de protection d'une installation electrique a capacite de coupure amelioree

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EP0793318A1 (de) * 1996-03-01 1997-09-03 Felten & Guilleaume Austria Ag Überspannungs-Ableiteinrichtung
FR2770939A1 (fr) * 1997-11-12 1999-05-14 Soule Materiel Electr Dispositif eclateur pour la protection de lignes electriques et/ou d'appareils electriques contre des surtensions temporaires
FR2864711A1 (fr) * 2003-12-30 2005-07-01 Soule Protection Surtensions Dispositif de protection contre les surtensions avec eclateurs en parallele a declenchement simultane
FR2873509A1 (fr) * 2004-07-26 2006-01-27 Soule Prot Surtensions Sa Dispositif de protection contre les surtensions a capacite de coupure du courant de fuite ameliore
FR2873865A1 (fr) * 2004-07-27 2006-02-03 Soule Prot Surtensions Sa Dispositif de protection contre les surtensions a pouvoir de coupure ameliore
FR2880468A1 (fr) * 2005-01-04 2006-07-07 Soule Prot Surtensions Sa Appareil de protection d'une installation electrique a capacite de coupure amelioree

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102299484A (zh) * 2010-04-30 2011-12-28 Abb法国公司 用于提前放电避雷器的保护罩
CN102299484B (zh) * 2010-04-30 2014-10-22 Abb法国公司 用于提前放电避雷器的保护罩
CN102769253A (zh) * 2011-05-05 2012-11-07 Abb研究有限公司 用于快速闭合电路的装置和方法以及该装置的用途
CN102769253B (zh) * 2011-05-05 2016-06-29 Abb研究有限公司 用于快速闭合电路的装置和方法以及该装置的用途
US20160079026A1 (en) * 2014-09-16 2016-03-17 Abb France Cut-off member of a device for protecting an electric installation against lightning
CN105428174A (zh) * 2014-09-16 2016-03-23 Abb法国公司 旨在集成于电路中的切断件及包括该切断件的组件
US10043629B2 (en) * 2014-09-16 2018-08-07 Abb France Cut-off member of a device for protecting an electric installation against lightning
CN105428174B (zh) * 2014-09-16 2019-02-05 Abb法国公司 旨在集成于电路中的切断件及包括该切断件的组件
EP2998976B1 (de) * 2014-09-16 2019-11-27 ABB Schweiz AG Abschaltelement einer schutzvorrichtung einer elektroinstallation zur blitzableitung
DE102017218584A1 (de) * 2017-10-18 2019-04-18 Phoenix Contact Gmbh & Co. Kg Gasgefüllter Überspannungsableiter
CN109687292A (zh) * 2017-10-18 2019-04-26 菲尼克斯电气公司 充气式过压放电器
CN110391648A (zh) * 2018-04-23 2019-10-29 Abb瑞士有限公司 构造成允许放电电流循环的保护装置

Also Published As

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FR2904893B1 (fr) 2008-10-10
EP1887667B2 (de) 2014-01-22
FR2904893A1 (fr) 2008-02-15
DE602007006597D1 (de) 2010-07-01
EP1887667B1 (de) 2010-05-19
ATE468639T1 (de) 2010-06-15

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