EP1961087B1 - Vorrichtung für den schutz gegen überspannungen mit verbesserter sicherheit und zugehöriges herstellungsverfahren - Google Patents

Vorrichtung für den schutz gegen überspannungen mit verbesserter sicherheit und zugehöriges herstellungsverfahren Download PDF

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Publication number
EP1961087B1
EP1961087B1 EP06841860A EP06841860A EP1961087B1 EP 1961087 B1 EP1961087 B1 EP 1961087B1 EP 06841860 A EP06841860 A EP 06841860A EP 06841860 A EP06841860 A EP 06841860A EP 1961087 B1 EP1961087 B1 EP 1961087B1
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EP
European Patent Office
Prior art keywords
electrodes
housing
overvoltages
circuit breaker
installation
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EP06841860A
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English (en)
French (fr)
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EP1961087A1 (de
Inventor
Jean-Bernard Ducourneau
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ABB France SAS
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ABB France SAS
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Publication of EP1961087A1 publication Critical patent/EP1961087A1/de
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H83/00—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current
    • H01H83/10—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current operated by excess voltage, e.g. for lightning protection

Definitions

  • the present invention relates to the general technical field of equipment protection devices or electrical installations against overvoltages, and especially against transient overvoltages such as those due to lightning.
  • the present invention relates in particular to the field of surge arresters, and in particular as low voltage surge arresters.
  • the present invention relates more particularly to a device for protecting an electrical installation against overvoltages, in particular transients, comprising on the one hand a housing in which is disposed an overvoltage protection component which comprises at least two electrodes between which an electric arc is likely to form in case of overvoltage, and secondly two connection terminals for electrically connecting the electrodes to said installation.
  • an overvoltage protection component which comprises at least two electrodes between which an electric arc is likely to form in case of overvoltage, and secondly two connection terminals for electrically connecting the electrodes to said installation.
  • the invention also relates to a method for manufacturing a device for protecting an electrical installation against overvoltages, in particular transient overvoltages, in which, on the one hand, there is, within a housing, a protection component against overvoltages which comprises at least two electrodes between which an electric arc is likely to form in case of overvoltage, and in which on the other hand is provided the housing of two connection terminals for electrically connecting the electrodes to said installation.
  • a low-voltage protection device such as a spark gap arrester
  • a spark gap arrester a low-voltage protection device
  • Such a device is generally in the form of a housing containing the spark gap electrodes, said housing being intended to be connected to the installation to be protected by means of connection terminals.
  • This housing is generally associated in series with a complementary disconnection device, adapted to isolate the surge protection device of the electrical installation when said device is traversed by a current of too high intensity.
  • a complementary disconnection device adapted to isolate the surge protection device of the electrical installation when said device is traversed by a current of too high intensity.
  • overcurrent protection devices such as fuses or circuit breakers trade, which is mounted in series with the surge arrester.
  • the conventional disconnectors of the fuse type or circuit breakers are not designed to discharge lightning currents. This can result in an inadvertent tripping of the disconnector for current amplitudes that are actually not dangerous for the surge arrester. This leads to undesirably reduce the operating range of the arrester, correspondingly decreasing the level of protection of the installation.
  • an overvoltage protection device connected between an electrical line and earth, comprises a first connection electrode, a second connection electrode and a switching electrode movable between a service position, in contact with the first connection electrode, and a switching position, close to the second connecting electrode.
  • An electric dipole comprising a varistor and / or a spark gap, connects the moving electrode to the second connection electrode.
  • the moving electrode can be moved by a mechanism, an electromechanical relay and / or a magnetic circuit providing repulsion when the intensity of the current becomes very high. The separation of the electrodes produces an arc which limits the current flowing through the dipole and, by switching on the second connection electrode, deactivates the dipole and thus ensures its protection.
  • the objects assigned to the invention therefore aim to propose a new device for protecting an electrical installation against overvoltages that do not have the drawbacks enumerated above and that provide an excellent level of protection against overvoltages while being capable, in the event of failure, to be disconnected from the electrical installation.
  • Another object of the invention is to propose a new device for protecting an electrical installation against overvoltages that can be disconnected from the electrical installation only when the end-of-life conditions of the device are effectively met.
  • Another object of the invention is to propose a new device for protecting an electrical installation against overvoltages of particularly simple and inexpensive design.
  • Another object of the invention is to propose a new device for protecting an electrical installation against overvoltages of compact and inexpensive construction.
  • Another object of the invention is to propose a new device for protecting an electrical installation against overvoltages having a good reliability of disconnection.
  • Another object of the invention is to provide a new device for protecting an electrical installation against overvoltages having an excellent level of security while being of very simple structure.
  • Another object of the invention is to propose a new method of manufacturing a device for protecting an electrical installation against surges particularly easy, fast and inexpensive to implement.
  • a protection device of an electrical installation against overvoltages, in particular transients comprising on the one hand a housing in which is disposed an overvoltage protection component which comprises at least two electrodes between which an electric arc is likely to form in case of overvoltage, and secondly two connection terminals for electrically connecting the electrodes to said installation, said device having two conductive pads for electrically connecting respectively each terminal to the corresponding electrode, or at least one of said pads, comprises a fusible zone forming a circuit breaker.
  • the objects assigned to the invention are also achieved by means of a method of manufacturing a device for protecting an electrical installation against overvoltages, in particular transients, in which, on the one hand, there is of a housing, an overvoltage protection component which comprises at least two electrodes between which an electric arc is likely to form in case of overvoltage, and in which on the other hand the housing is provided with two connection terminals intended electrically connecting the electrodes to said installation, said method comprising a step of mounting two conductive pads for electrically connecting respectively each terminal to the corresponding electrode, wherein at least one of said pads has a fusible zone forming a circuit breaker.
  • the invention relates to a protection device 1 of an electrical installation (not shown) against overvoltages, and in particular against transient overvoltages, such as overvoltages generated by a thunderbolt.
  • the protection device 1 according to the invention is therefore advantageously a surge arrester, and for example a low voltage arrester.
  • the protection device 1 against overvoltages according to the invention is advantageously intended to be mounted between a phase of the installation to be protected and the earth.
  • the protective device 1 instead of being connected bypass between a phase and the earth, is connected between the neutral and the earth, between the phase and the neutral, or between two phases (case of differential protection).
  • the protective device 1 comprises a housing 2 in which is disposed an overvoltage protection component which itself comprises at least two electrodes, for example a first electrode 3 and a second electrode 4, between which an electric arc is may be formed in case of overvoltage, to discharge said overvoltage to earth.
  • an overvoltage protection component which itself comprises at least two electrodes, for example a first electrode 3 and a second electrode 4, between which an electric arc is may be formed in case of overvoltage, to discharge said overvoltage to earth.
  • the first and second electrodes 3, 4 delimit an inter-electrode space 5 forming a spark gap.
  • the first and second electrodes 3, 4 thus advantageously form the main electrodes of the spark gap.
  • said electrodes 3, 4 between which an electric arc is likely to form are therefore part of the main overvoltage protection component of the device 1, and preferably form the main component for protecting against overvoltages of the device.
  • device 1 in the sense of the invention is a device whose operating principle is based on the generation of an electric arc in case of overvoltage.
  • the device 1 is therefore in particular not a varistor protection device as the main protection component against overvoltages.
  • the housing 2 is for example made of a rigid plastic material, and is preferably formed of two half-shells (one of which is shown in FIG. figure 1 ) reported against each other to delimit a closed internal volume intended to accommodate the functional part of the device 1.
  • the protection device 1 also comprises two connection terminals 6, 7 for electrically connecting the electrodes 3, 4 to the electrical installation to be protected. More specifically, the device 1 comprises a first terminal 6 electrically connected to the first electrode 3, and a second terminal 7 electrically connected to the second electrode 4.
  • the terminals 6, 7 can be present in any form known to those skilled in the art.
  • the terminals 6, 7 may be in the form of tabs projecting towards and outside the housing 2, said tabs being intended to be plugged into an electrically connected base to the installation to be protected.
  • the terminals 6, 7 are arranged laterally on either side of the housing 2, and each comprise a housing intended to receive a connection cable, said cable being secured to the corresponding terminal 6, 7 by screwing with the aid of corresponding screws 6A, 7A.
  • Such an arrangement is well known to those skilled in the art and will not be described in more detail here.
  • the electric current moves from the first terminal 6 (or the second terminal 7) to the first electrode 3 (respectively the second electrode 4), and joins the second electrode 4 (respectively the first electrode 3) in the form of an electric arc, to then flow to the second terminal 7 (respectively the first terminal 6).
  • the device 1 can also be equipped, as illustrated in FIG. figure 1 , a triggering electronics 8 connected to a priming electrode 9, in order to optimize the control of formation of the electric arc between the main electrodes 3, 4.
  • a triggering electronics 8 connected to a priming electrode 9, in order to optimize the control of formation of the electric arc between the main electrodes 3, 4.
  • the inter-electrode space 5 is filled, at least partially, with a gas, preferably with air, so as to form a dielectric medium between the electrodes 3, 4, as is well known. of the skilled person.
  • the inter-electrode gap 5 forms an air gap.
  • the protection device 1 it is quite possible, without departing from the scope of the invention, for the protection device 1 to implement encapsulated spark gap technology, in which the air is replaced by another gas, for example a gas rare maintained under controlled pressure.
  • the device 1 comprises, disposed within the housing 2 and electrically connected in series with the protection component (which comprises the electrodes 3, 4) between the terminals 6, 7, a circuit breaker 10.
  • the protection component which comprises the electrodes 3, 4
  • circuit breaker 10 is electrically connected in series with the electrodes 3, 4, so that when an electrical connection is established between said electrodes 3, 4, the current flowing through said electrodes also passes through the cutter. -circuit 10.
  • the circuit breaker 10 is designed to pass from a conductive configuration (shown in FIGS. Figures 1 to 3 ) in which it is capable of conducting the electric current likely to flow between the terminals 6, 7, to an insulating configuration (illustrated in FIG. figure 4 ) in which it breaks the passage of current flowing between said terminals 6, 7.
  • the circuit breaker 10 is capable, in its conductive configuration, of ensuring directly by itself the passage of the electric current able to flow between the terminals 6, 7 when an electric arc is formed between the first and second electrodes 3, 4.
  • the circuit breaker 10 thus forms part, when in its conductive configuration, of the flow circuit between the terminals 6, 7.
  • the circuit breaker 10 is designed to interrupt the flow of current between the terminals 6, 7.
  • the electrodes 3, 4 are short-circuited, as a result of a failure of the device 1, the latter will be totally electrically isolated from the installation to protect, in order to avoid any risk of degradation or fire.
  • the circuit breaker 10 is of course preferably capable of detecting by itself a malfunction of the device 1 and to automatically switch to an insulating configuration when such a malfunction is detected.
  • a circuit breaker designates an element which, under normal operating conditions of the device which it equips, a passing character (electrical conductor) and becomes insulating (circuit breakage) when an electrical malfunction of the device it team occurs.
  • the general principle of the invention is therefore essentially based on the integration, directly into the housing 2 of the protection device 1, of a circuit breaker 10 interposed directly in the electrical path extending between the first terminal 6 and the second terminal 7, in series connection with the protective component.
  • the installer protection device 1 has no particular approach to implement (other than the connection of terminals 6, 7 to the installation) to protect the device 1 in case of malfunction.
  • Such a malfunction or failure may in particular be characterized by the existence of a current intensity level and / or temperature within the abnormally high housing 2.
  • the circuit breaker 10 is thus sensitive to heat, so that when the temperature reaches a predetermined value (reflecting abnormal operation) at the circuit breaker 10, the latter goes into an insulating configuration.
  • the circuit breaker 10 is sensitive to the intensity of the current flowing through it, so that when said current reaches a predetermined value reflecting an abnormal operation, the circuit breaker 10 goes into an insulating configuration.
  • the circuit breaker 10 is sensitive to the intensity of the current flowing through it, that is to say that as soon as this intensity reaches a predetermined value, preferably corresponding to a malfunction of the protection component. (As a result of a short circuit between the electrodes 3, 4 for example), the circuit breaker 10 passes from its conductive configuration to its insulating configuration.
  • circuit breaker 10 sensitive to the intensity that passes through it is particularly particularly interesting from the point of view of simplicity and cost of manufacture, while providing a gain in installation safety in the wherein the predetermined intensity value controlling the tripping of the circuit breaker 10 (i.e. its passage from its passing configuration to its insulating configuration) is chosen to specifically match the characteristics of the protection component.
  • the circuit breaker 10 has a fusible character, that is to say that it comprises fusible means so that when the intensity that passes through these fusible means is greater than a predetermined level, thereby generating a heat input by Joule effect, said fusible means melt, thus creating a definitive electrical break between the first terminal 6 and the second terminal 7.
  • the circuit breaker 10 is thus advantageously designed to form at least one insulating gap 11 in the circuit connecting the first terminal 6 to the second terminal 7.
  • This insulating space 11 has a dimension predetermined predetermined preferentially, with respect to the other characteristics of the device 1, to avoid inadvertent reformation of an electric arc at said empty space 11.
  • the device 1 comprises two conductive pads 12, 13 for electrically connecting respectively each terminal 6, 7 to the corresponding electrode 3, 4. At least one (and preferably each) of said lands 12, 13 comprises a fuse zone 12A, 13A forming a circuit breaker 10.
  • the circuit breaker 10 is thus formed of two fuse elements respectively interposed in the electrical connection connecting the first terminal 6 to the first electrode 3 and in the electrical connection connecting the second terminal 7 to the second electrode 4. It is of course conceivable that the circuit breaker 10 is formed of a single fuse element, for example, connected in series only between the first terminal 6 and the first electrode 3 (or between the second terminal 7 and the second electrode 4).
  • the symmetrical configuration illustrated in the figures is, however, preferred.
  • said range 12, 13 is formed of a one-piece integral piece having at least one section of reduced section forming said fuse zone 12A, 13A.
  • connection between each terminal 6, 7 and the corresponding electrode 3, 4 is ensured by a unitary metal strip, for example made of stainless steel, a portion of which between the terminal 6, 7 and the corresponding electrode 3, 4 has a cross section smaller than the cross section of the rest of the band.
  • a unitary metal strip for example made of stainless steel
  • the section of reduced section yields, thus providing a insulating empty space 11 interrupting the current flow and thus the destruction process of the device 1.
  • the invention furthermore relates as such to a protective device 1 of an electrical installation against overvoltages, in particular transients, comprising on the one hand a housing 2 in which is disposed a surge protection component which comprises at least two electrodes 3, 4 between which an electric arc is likely to form in case of overvoltage, and secondly two connection terminals 6, 7 for electrically connecting the electrodes 3, 4 to said installation, said device 1 having two conductive pads 12, 13 for respectively electrically connecting each terminal 6, 7 to the corresponding electrode 3, 4, at least one of said pads 12, 13 having a fusible zone 12A, 13A forming a circuit breaker 10.
  • a protective device 1 of an electrical installation against overvoltages, in particular transients comprising on the one hand a housing 2 in which is disposed a surge protection component which comprises at least two electrodes 3, 4 between which an electric arc is likely to form in case of overvoltage, and secondly two connection terminals 6, 7 for electrically connecting the electrodes 3, 4 to said installation, said device 1 having two conductive pads 12, 13 for respectively electrically
  • the device 1 also comprises a breaking chamber 14 of the electric arc that may be formed between the electrodes 3, 4.
  • the operation of such a breaking chamber 14 is based on the fractionation of the electric arc produced between the electrodes 3, 4.
  • the operation of such a chamber 14 is well known as such, and will not be described further here.
  • the electrodes 3, 4 are advantageously arranged so that the electric arc is transferred to and in the breaking chamber 14 under the effect of its own electric field.
  • the device 1 according to the invention also comprises at least one isolation spark gap 15, 16 electrically mounted in series between at least one of the electrodes 3, 4 and the breaking chamber 14.
  • the interrupting chamber (which may also be called arc extinguishing chamber) 14 is delimited by two end plates. 17, 18 between which are interposed a series of elementary splitter plates 19 spaced apart from each other so as to decompose the electric arc formed between the electrodes 3, 4 in a plurality of elementary arcs.
  • the device 1 comprises two isolation gaps 15, 16 interposed respectively between the first end plate 17 and the first electrode 3 and the second end plate 18 and the second electrode 4.
  • Each isolation spark gap 15, 16 is preferably formed by a void space (filled with air, or another gas, or a dielectric) separating the end of each electrode 3, 4 from the outer plate 17 , 18 corresponding.
  • Said insulation gaps 15, 16 preferably have a clean breaking capacity sufficient to ensure, in the event of failure of the arc extinguishing chamber 14, the definitive extinction of the electric arc during the zero crossing of the current in the device 1 by preventing the reboot of the electric arc.
  • an isolation spark gap 15, 16 with a circuit breaker. 10 proves particularly advantageous because it allows, in a particularly simple manner and without harming the protective properties of the device 1 against overvoltages, to obtain an insulating void space of predetermined size particularly important when the circuit breaker 10 is passed through. its insulating configuration, without implementing a circuit breaker 10 of significant size, which could affect the reliability of the device 1.
  • the distances e and f may be between 0.5 and 3 mm, and preferably between 1 and 2 mm, while c and d may be between 0.5 and 2 mm, and preferably equal to 1 mm.
  • isolation gaps 15, 16 thus makes it possible, in order to obtain a given isolation distance, to reduce the size of the fusible zones 12A, 13A (which contributes to making the device 1 more reliable), with respect to a device 1 which do not include an isolation spark gap 15, 16.
  • the overall isolation distance obtained after triggering the circuit breaker 10 would be equal to the sum e + f + a + b to which is added the sum of the interstitial spaces separating each plate from the series of plates 19, the distances a and b respectively corresponding to the distances separating the outer plates 17 , 18 of the series 19 of elementary plates.
  • the invention thus makes it possible to provide an electrical isolation function of the particularly reliable device 1, and this in a particularly simple, compact and inexpensive manner.
  • a mechanical or electrical display system can be integrated in the housing 2, said display system (not shown) being operatively connected to the circuit breaker 10 so as to indicate to the user the state of the arrester 1, to operate or not the replacement of the latter.
  • the invention also relates to a method of manufacturing a protection device 1 of an electrical installation against surges, particularly transient, such as that just described.
  • the housing 2 is provided with two connection terminals 6, 7 for electrically connecting the electrodes 3, 4 to the installation to be protected.
  • the method according to the invention also comprises a step of mounting a circuit breaker 10, in which is mounted electrically in series with the protective component, between the terminals 6, 7, within the housing 2, a cut-off circuit 10 sensitive to the intensity of the current flowing through it.
  • the circuit breaker 10 is able to pass from a conductive configuration in which it is capable of conducting the electric current likely to flow between the terminals 6, 7, to an insulating configuration in which it breaks the passage of the current flowing between said terminals 6, 7.
  • the circuit breaker 10 passes from its conductive configuration to its insulating configuration when the intensity of the current flowing through said circuit breaker 10 (but which also passes through the electrodes 3, 4 ) reaches a predetermined value corresponding to a malfunction of the device 1, and more particularly of the protection component.
  • the invention also relates as such to a method of manufacturing a protection device 1 of an electrical installation against overvoltages, in particular transient overvoltages, in which on the one hand, within a housing2, a overvoltage protection component which comprises at least two electrodes 3, 4 between which an electric arc is likely to form in case of overvoltage, and in which on the other hand the housing 2 is provided with two connection terminals 6, 7 for electrically connecting the electrodes 3, 4 to said installation, said method comprising a step of mounting two conductive pads 12, 13 for respectively electrically connecting each terminal 6, 7 to the corresponding electrode 3, 4, at least one said pads 12, 13 having a fusible zone 12A, 13A forming a circuit breaker 10.
  • the invention finds its industrial application in the design, manufacture and use of protection devices of equipment or electrical installations against overvoltages.

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  • Emergency Protection Circuit Devices (AREA)

Claims (11)

  1. Vorrichtung (1) zum Schutz einer elektrischen Anlage vor Überspannungen, die einerseits ein Gehäuse (2), in dem ein Bauelement zum Schutz vor Überspannungen angeordnet ist, das mindestens zwei Elektroden (3, 4) umfasst, zwischen denen sich im Falle einer Überspannung ein Lichtbogen bilden kann, und andererseits zwei Anschlussklemmen (6, 7) umfasst, die dazu bestimmt sind, die Elektroden (3, 4) elektrisch mit der Anlage zu verbinden, wobei die Vorrichtung (1) zwei leitende Bereiche (12, 13) umfasst, um jede Klemme (6, 7) elektrisch mit der entsprechenden Elektrode (3, 4) zu verbinden, dadurch gekennzeichnet, dass mindestens einer der Bereiche (12, 13) eine schmelzbaren Teil (12A, 13A) umfasst, der eine Trennsicherung (10) bildet.
  2. Vorrichtung (1) nach Anspruch 1, dadurch gekennzeichnet, dass die Trennsicherung (10) mit dem Schutzbauelement zwischen den Klemmen (6, 7) elektrisch in Reihe geschaltet ist.
  3. Vorrichtung (1) nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass die Trennsicherung (10) im Gehäuse (2) angeordnet ist.
  4. Vorrichtung (1) nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass sie vorgesehen ist, um vor transienten Überspannungen zu schützen.
  5. Vorrichtung (1) nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass der eine der Bereiche (12, 13) aus einem Stück gebildet ist, das mindestens einen Abschnitt mit vermindertem Querschnitt aufweist, der der schmelzbaren Teil (12A, 13A) bildet.
  6. Vorrichtung (1) nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass die Trennsicherung (10) konstruiert ist, um mindestens einen isolierenden Hohlraum (11) mit vorbestimmter Abmessung (e, f) zu bilden.
  7. Vorrichtung (1) nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, dass sie eine Löschkammer (14) für den Lichtbogen umfasst, der sich zwischen den Elektroden (3, 4) bilden kann.
  8. Vorrichtung (1) nach Anspruch 7, dadurch gekennzeichnet, dass sie mindestens eine Trennfunkenstrecke (15, 16) umfasst, die zwischen mindestens der einen der Elektroden (3, 4) und der Löschkammer (14) elektrisch in Reihe geschaltet ist.
  9. Vorrichtung (1) nach einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, dass sie einen Überspannungsableiter bildet.
  10. Verfahren zum Herstellen einer Vorrichtung (1) zum Schutz einer elektrischen Anlage vor Überspannungen, in dem einerseits in einem Gehäuse (2) ein Bauelement zum Schutz vor Überspannungen angeordnet wird, das mindestens zwei Elektroden (3, 4) umfasst, zwischen denen sich im Falle einer Überspannung ein Lichtbogen bilden kann, und in dem andererseits das Gehäuse (2) mit zwei Anschlussklemmen (6, 7) versehen wird, die dazu bestimmt sind, die Elektroden (3, 4) elektrisch mit der Anlage zu verbinden, wobei das Verfahren einen Schritt des Zusammenbauens von zwei leitenden Bereichen (12, 13) umfasst, um jede Klemme (6, 7) jeweils mit der entsprechenden Elektrode (3, 4) zu verbinden, dadurch gekennzeichnet, dass mindestens einer der Bereiche (12, 13) einen schmelzbaren Teil (12A, 13A) umfasst, der eine Trennsicherung (10) bildet.
  11. Herstellungsverfahren nach Anspruch 10, wobei die Schutzvorrichtung (1) vorgesehen ist, um eine elektrische Anlage vor transienten Überspannungen zu schützen.
EP06841860A 2005-12-05 2006-12-05 Vorrichtung für den schutz gegen überspannungen mit verbesserter sicherheit und zugehöriges herstellungsverfahren Active EP1961087B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0512313A FR2894383B1 (fr) 2005-12-05 2005-12-05 Dispositif de protection contre les surtensions a securite amelioree et procede de fabrication correspondant
PCT/FR2006/002652 WO2007065997A1 (fr) 2005-12-05 2006-12-05 Dispositif de protection contre les surtensions a securite amelioree et procede de fabrication correspondant

Publications (2)

Publication Number Publication Date
EP1961087A1 EP1961087A1 (de) 2008-08-27
EP1961087B1 true EP1961087B1 (de) 2012-10-10

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EP06841860A Active EP1961087B1 (de) 2005-12-05 2006-12-05 Vorrichtung für den schutz gegen überspannungen mit verbesserter sicherheit und zugehöriges herstellungsverfahren

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EP (1) EP1961087B1 (de)
ES (1) ES2396726T3 (de)
FR (1) FR2894383B1 (de)
WO (1) WO2007065997A1 (de)

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DE102011102941B4 (de) * 2011-03-18 2014-12-11 Dehn + Söhne Gmbh + Co. Kg Funkenstrecke mit mehreren in Reihe geschalteten, in einer Stapelanordnung befindlichen Einzelfunkenstrecken
CZ2014611A3 (cs) 2014-09-08 2016-03-16 Saltek S.R.O. Přepěťová ochrana v modulárním provedení

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DE8025215U1 (de) * 1980-09-20 1981-01-08 Wickmann-Werke Ag, 5810 Witten Niederspannungs-Ventilableiter
JPH08203415A (ja) * 1995-01-30 1996-08-09 Otowa Denki Kogyo Kk 配電機器の劣化表示器
FR2846478B1 (fr) * 2002-10-25 2004-12-24 Schneider Electric Ind Sas Dispositif de protection contre les surtensions a electrode mobile
KR100571152B1 (ko) * 2004-03-12 2006-04-17 엘에스전선 주식회사 지중 케이블의 시스전류 억제장치

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ES2396726T3 (es) 2013-02-25
EP1961087A1 (de) 2008-08-27
FR2894383A1 (fr) 2007-06-08
WO2007065997A1 (fr) 2007-06-14
FR2894383B1 (fr) 2008-10-24

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