EP1746695B1 - Dispositif dérivateur de surtensions utilisé dans des systèmes de distribution à barres omnibus - Google Patents

Dispositif dérivateur de surtensions utilisé dans des systèmes de distribution à barres omnibus Download PDF

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Publication number
EP1746695B1
EP1746695B1 EP06116539A EP06116539A EP1746695B1 EP 1746695 B1 EP1746695 B1 EP 1746695B1 EP 06116539 A EP06116539 A EP 06116539A EP 06116539 A EP06116539 A EP 06116539A EP 1746695 B1 EP1746695 B1 EP 1746695B1
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EP
European Patent Office
Prior art keywords
arrester
arresting device
support plate
overvoltage
circuit
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Not-in-force
Application number
EP06116539A
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German (de)
English (en)
Other versions
EP1746695A1 (fr
Inventor
Raimund König
Michael Waffler
Wilhelm Hohenwaldt
Arnd Ehrhardt
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Dehn SE and Co KG
Original Assignee
Dehn and Soehne GmbH and Co KG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Dehn and Soehne GmbH and Co KG filed Critical Dehn and Soehne GmbH and Co KG
Priority to PL06116539T priority Critical patent/PL1746695T3/pl
Publication of EP1746695A1 publication Critical patent/EP1746695A1/fr
Application granted granted Critical
Publication of EP1746695B1 publication Critical patent/EP1746695B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • 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
    • H01T4/00—Overvoltage arresters using spark gaps
    • H01T4/06—Mounting arrangements for a plurality of overvoltage arresters

Definitions

  • the invention relates to a surge arrester arrangement for use in industrial busbar distribution systems and equipped with such systems switchgear with internal low-inductance and shock-current wiring and designed as a housing component support plate according to the preamble of claim 1.
  • Overvoltages such as those that occur in switchgear, can be reduced to a compatible voltage level using standard protective components, such as follow-current extinguishing spark gaps or varistor discharge conductors.
  • standard protective components such as follow-current extinguishing spark gaps or varistor discharge conductors.
  • the design of conventional protection devices is fundamentally less suitable, since they are usually designed for a different installation environment in which cable connections represent the common connection technology. If such devices are used in contrast changed environment of a busbar system, for example, over the impedances of leads or contact junction resistors of their unmatched connection technology additional surges can arise, which are detrimental to an otherwise achievable level of protection.
  • the current-carrying conductors are usually designed as copper bars, ie busbars. These rails have a large cross-section and are usually not isolated in order to better exploit the cross-section performance by improved cooling conditions.
  • Busbar distributors have achieved ever higher performance and reliability, which is also due to the ever-increasing degree of automation of the equipment used there.
  • the necessary electronic circuits act due to the high integration density increasingly sensitive to voltages and therefore for availability reasons must be effectively against voltages from the various sources of interference that can act on them from the environment of a switchgear and external sources, are protected.
  • the sources of interference in the environment of a switchgear are mainly transient sources of interference.
  • the noise levels generated by them have a very different energy level, which manifests itself in the course of time as well as the magnitude of the current and voltage values and their rates of change.
  • the noise levels can be transmitted via various media, eg as an electromagnetic wave through the air or as line-bound Electricity / voltage pulse propagate and so come in the entire system in different places to act.
  • Electromagnetic waves which propagate spatially over the air, can be coupled into line systems or existing conductor loops and devices and thus act as a secondary line-bound disturbance.
  • Rarer lightning-related overvoltages have an energy-related relatively high level of interference up to the destruction of equipment and are known to be the greatest threat to electrical or electronic equipment and their components. Particularly high overvoltages arise along or against discharges that lead directly coupled lightning currents.
  • lightning current surge arresters are used in distribution systems. Such arresters have in comparison to the primary disturbance very small residual levels and thereby protect the subsequent resources against destruction by flashovers and arcs.
  • a prerequisite for achieving such a high level of protection is a suitably designed connection technology which minimizes or even ideally avoids even induction loops during the installation of the outer connection lines.
  • Another disadvantage is that the necessary connection technology can be detrimental to the protective effect of the surge arrester, since as a rule long distances between the connection points between which the overvoltage is to be limited must be bridged.
  • a busbar system with one or more busbars, which are connected by means of a surge arrester with a reference potential.
  • the local system is characterized by a transversely mounted on the busbar adapter bridge, which has a shock-current-resistant contact for contacting the busbar and which has at least one slot having at least one electrically connected to the contact of the busbar plug contact.
  • the surge arrester is designed as a plug-in module for the corresponding receptacle in the slot of the adapter bridge and has at least one mating contact which can be brought into engagement with the plug contact, and also has a reference potential connection which can be connected to the reference potential of the system.
  • This terminal which is designed in particular as a terminal block, comprises an insulating housing with at least one tension spring, wherein the insulating housing has at least one conductor insertion opening for insertion of an electrical conductor to be connected and at least one actuating opening for insertion of an actuating tool for opening the tension spring.
  • the tension spring in turn has a clamping leg with a recess for insertion of the electrical conductor to be connected, an approximately perpendicular to the clamping leg extending support leg and the clamping leg and the plant leg connecting back.
  • the insulating housing in turn has at least one busbar receptacle.
  • the busbar receptacle is designed in a plane with the plant leg of the tension spring, so that the busbar in the inserted state directly on the plant leg of the tension spring under spring force of the same, whereby a direct or indirect contact with the busbar is possible by the tension spring with imported electrical conductor.
  • the surge arrester all functions of the surge arrester, including the components arranged externally according to the prior art, are accommodated on an assembly.
  • This module forms an electrical and mechanical unit, which is tuned to the outer configuration of the housing surrounding the module, as well as the application of the next connection technology.
  • the surge arrester arrangement is combined as a mechanically stable, self-supporting unit in a modular manner, which also ensures the necessary mechanical strength of the entire arrester. It can be designed individually adapted to the particular application, the outer housing contour and designed so that no additional support elements, such as webs or brackets, necessary, so that even at smaller quantities cost-effective production is possible.
  • the created surge arrester arrangement is based on a carrier plate designed as a housing component.
  • This carrier plate is made of a conductive material and has a large, integral flange portion for electrical and mechanical attachment to a busbar.
  • the one or more voltage-limiting components of the arrester are each connected directly to the carrier plate with an electrical connection, wherein the one or more further electrical connections are connected via a busbar to the current fuses whose further connection leads to an external connection lug.
  • a connection point for an optical waveguide (LWL) transmission link is provided, which cooperates with a condition monitoring circuit.
  • the aforementioned components form a modular assembly that is surrounded by a matched to the particular application outside housing.
  • Ausgestaltend is on the mecanical a ticagoospin or in the vicinity of this support member, a circuit board with an ignition and display circuit available.
  • the light-emitting unit for the optical waveguide transmission path can be carried out in an advantageous manner as a glow lamp.
  • the integrated arrester fuse is designed so that it can carry a current load for which the voltage-limiting component is designed, without triggering itself, whereby the fuse interrupts in the event of sustained follow-on current or arrester short-circuit.
  • the parallel fuse elements have a different tripping characteristic.
  • the further connection which is led to the outer connecting lug, is fixed by a mechanically-constructively reinforced section of the outer housing and an opening there.
  • This further connection which leads to the terminal lug, can be formed as a cover plate analogous to the carrier plate, so that a substantially parallel contact surface is formed on both end sides of the module.
  • the support plate and / or the aforementioned cover plate have a plurality of recesses for electrical and mechanical attachment to the respective busbar.
  • the insulating mecanictragteil which is located on the support plate, divides the space located on the support plate such that on one side of the mecanictragteils or the voltage-limiting components and on the opposite side of the current fuses and in the intermediate region, the condition monitoring circuit can be arranged.
  • the outer housing is connected to the support plate and / or the cover plate, preferably screwed.
  • the arrester may be formed as a spark gap, varistor or combination of these elements.
  • the spark gap preferably has a cylinder housing shape and is arranged standing on the carrier plate.
  • the outer terminal lug is oriented at right angles to the support plate surface in one embodiment of the invention.
  • the properties of the surge arrester arrangement according to the exemplary embodiment can be summarized as a modified housing technology, adapted, needs-based connection solution and integrated arrester fuse with condition monitoring.
  • the housing construction of the arrester according to the invention is designed so that the possibility of a large-area and thus particularly low-impedance connection technology is given.
  • connection pads which are e.g. may be formed in the form of connecting flanges and / or connecting lugs, integrated into the housing conception.
  • the housing encloses a self-supporting arrangement of the individual components (see FIGS. 4A and 4B), which in their entirety form the function of the arrester.
  • surge arresters designed as a spark gap and / or varistor and their combination or other components with similar functions
  • Overcurrent protection devices as short-circuit and / or overload protection and other functions, such as a Trigger circuit or monitoring devices and / or monitoring displays and a state signaling.
  • connection technology is functionally adapted to the environment of the application in order to prevent inevitable joints due to additional necessary clamp connections, additional impedances in the arrester path due to cable lengths or installation loops due to unfavorable connection configurations caused by unwanted voltage overshoots in addition to the protection level of the Arrester negatively affect downstream resources.
  • Fig. 1 shows a typical connection situation, as is commonly found in known busbar systems.
  • the arrester shown there is connected with its terminals A / B via a connecting line with the length L with a rail system in order to limit any overvoltage occurring between these connection points.
  • a surge current i S sets in whose current change speed di / dt in the conductor loops L1 / L2 produces an induction voltage depending on their conductor geometry and the stitch length L.
  • This induction voltage is added to the voltage Up via the terminals A / B of the arrester to a voltage U peff , which comes at the terminals of the protected equipment G as overvoltage to the effect.
  • the expected protection level Up of the arrester can be significantly exceeded, whereby the equipment to be protected is exposed to an increased risk of destruction.
  • the value of the additional disturbing residual variable can essentially only be influenced via the line inductance of the connection lines of the arrester. This depends on both the cable length and the cable cross-section. As the cable length increases, the line inductance increases while the cross section remains the same and the line geometry remains constant. By contrast, cross-section (field line length) and line inductance are inversely proportional, so that with the same line length and an increased line cross-section / field line length, a lower inductance, as in the smaller line cross-section results, or a rectangular cross-section with a larger field line length has a lower inductance than an equivalent Conductor cross section with round geometry.
  • the line length i. To make the stitch length so that its line inductance is reduced to a negligible value. Since in most cases the direct connection length between the two connection points of the potentials between which the arrester must limit the overvoltage is determined by the geometry of the switchgear, in many cases the effect of the line inductance can only be influenced by the cross section or its cross sectional geometry , For this purpose, according to the invention, the arrester has a connection possibility for corresponding line cross sections or conductor geometries.
  • busbar arrester according to the invention lies in the arrangement of an integrated short-circuit protection.
  • the arrester is short-circuit proof in itself and it can external short-circuit protection measures omitted in the discharge path.
  • the line length of the connecting line can advantageously be made short, but it eliminates an external fuse unit that would otherwise be necessary.
  • the short-circuit protection is designed as an overload protection adapted to the aging behavior of the arrester, by designing according to the aging behavior of the voltage limiters 17 elements used.
  • This measure leads to a coordinated end of life of the functionally important components arrester and arrester fuse and thus the entire functional unit, which is renewed after triggering the arrester fuse.
  • the arrester fuse has tripped, the arrester element and its shut-off element assigned to it are replaced at the same time, so that both elements always have the same aging state.
  • the short-circuit protection also acts as overload protection by not only the one-time largest load parameters, but also a certain number of low-energy Ableitvor sautician can cause a shutdown, which always advantageously in this design, the replacement of the entire functional unit by itself.
  • Extensive determination of the arrester state by checking certain arrester parameters can thereby be dispensed with.
  • the control of the arrester state is reduced to a visual check of its status display, which monitors, for example, the voltage between the arrester element and the fuse element.
  • Arrester and arrester fuse thus form according to the invention a coordinated arrester system, which consists on the one hand of a powerful arrester and on the other hand adapted from the performance of the arrester arrester fuse.
  • the main feature of the vote between arrester and arrester is that the arrester fuse the surge current load, for which the arrester is designed to run without tripping. As soon as this value is exceeded, the arrester fuse triggers. If the discharge process leads to a long-lasting line continuity or to a short circuit in the arrester, the arrester fuse interrupts the occurring short-circuit current.
  • the arrester fuse consists of two parallel current fuses with different tripping characteristics. A first of the two arrester fuses reacts to exceeding the surge current specified for the arrester. If the arrester is then damaged in such a way that it can no longer extinguish the line follow current directly following the discharge process of the surge current, the second arrester fuse of the parallel circuit is also triggered, which has a switching characteristic for relatively long-lasting current values which are smaller than the surge current. If, on the other hand, the arrester retains its extinguishing function, only partial disconnection takes place and the protective function of the arrester remains intact.
  • the limited function now given can meet the arrester until either another surge current triggers the only long-term current fuse that is only functional or the arrester reaches its aging limit via the subsequent currents that occur as a result of further discharge processes.
  • tripping in the event of extreme overload due to shock or secondary currents will work immediately, so that there is no safety gap in such a case.
  • the local monitoring of the aging state of the arrester system takes place via a condition monitoring of the arrester fuse.
  • This local condition monitoring can be replaced or supplemented by a remote inquiry.
  • the remote interrogation is based on a light waveguide route, which is in each case associated with a photoreceiver, which triggers a fault message when the light signal via a floating contact disappears.
  • a collective fault message can be produced via this contact in terms of circuitry, which combines all the discharge paths, for example of a three-phase system, into a common message, as shown in FIG.
  • optical fiber transmission system has significant advantages over other systems.
  • the problem of contact protection can be solved in connection with a voltage tap after the arrester, because at the junction for the outer connection of the system no voltage, but only light energy, which is delivered by an accommodated within the housing light emitter as an evaluable status message is applied.
  • the arrester-side transmitting device of the monitoring device only has the task of monitoring the voltage after the separating fuse element, this can be carried out very easily and inexpensively.
  • a simple glow lamp is used as an optical waveguide light emitter.
  • the busbar arrester according to the invention is connected as an N / PE arrester in a so-called 3 + 1 arrangement, it is possible to use the disconnection of the neutral conductor connected to the disconnection of the arrester fuse for monitoring.
  • monitoring can also record other safety-relevant functions within the arrester system. For example, it is possible to secure the circuit of a trigger circuit. If, for example, instead of the arrester fuse, this fuse would trigger, the function of the arrester system would be restricted. In the case of a detection of the state of this backup, on the other hand, an error message occurs, which would also result in this case, the replacement of the arrester.
  • a surge arrester arrangement for use in busbar distribution systems is initially based on a base plate or support plate 1, which simultaneously closes a housing serving, hood-like and inexpensive to create outer housing 2 on its open side.
  • the carrier plate 1 is designed as a connection flange for the connection of the arrester on a busbar and also serves as a mechanical attachment.
  • connection lug 4 Opposite the flange connection of the carrier plate 1 there is a connection lug 4, which is led out of a mechanically reinforced aperture 2 'of the front side of the housing 2 as a further connection.
  • This connecting plate 4 is designed so that not only round but also rectangular cross-section are easily connected.
  • the outer housing 2 is at its corners from below with the connection flange or the carrier plate 1 with e.g. four fastening screws 11 'to 11 "" screwed (see Fig. 3).
  • the internal structure of the surge arrester assembly is designed as a self-supporting unit grouping around an inner support member 5, the electrical components being connected by bus bars 6 ', 6 ", which is not only facilitates the installation of the busbar arrester, but also allows the integration of this structure in different housing concepts in a simple manner.
  • this modular insert shown in FIGS. 4A and 4B in a parallelepiped or cylindrical housing whose front sides have a contact surface similar to the carrier plate 1 on both sides.
  • a housing construction may, for example, constitute an insulating support, as used in switchgear construction as an insulating spacer between two parallel busbars or as an insulating attachment of the rails to support frames.
  • the interfering line inductance in the arrester branch, as shown in FIG. 1 with a view to the prior art, is completely eliminated in such an arrangement.
  • spark gap 8 is preferably a spark gap with a cylindrical outer housing application, which is mounted on the support plate 1 can be mounted.
  • the mecanictragteil 5 divides the space on the support plate 1 in a left-side and right-side as shown in FIG. 3. In the left-hand area is the spark gap 8 and a circuit board 9, which has a combined ignition and display circuit. The right part of the installation space accommodates the parallel-connected current fuses 7 'and 7 "as short-circuit and overload protection elements.
  • the contact between the ignition and display circuit 9 and the potential of the support plate 1 is effected by a contact clip 9 ', as shown in FIG. 4A recognizable.
  • a contact clip 9 ' As shown in FIG. 4A recognizable.
  • FIG. 4A it is also becoming clear how the necessary for the ignition of the spark gap and for generating the optical fiber monitoring signal or the N-conductor interruption to the evaluation device FM of FIG. 6 necessary ignition and display circuit within a quasi inner housing forming support member 5.
  • Fig. 5 shows the schematic diagram shown with electrical symbols and thus also the essential electrical interconnection of the arrangement of the components according to the representations of Fig. 3, and Fig. 4A and 4B of the busbar arrester according to the invention.
  • the assembly TRAN is located on the aforementioned circuit board and consists of a combination spark gap ignition device and optical fiber transmitter, the potential of L via the terminal A and the arrester fuse F at point P and corresponding to the potential of the busbar 6 "at the point 10 ', 10 "against the potential N / PEN at port B monitored.
  • the assembly TRAN can be replaced by an assembly TR, which has only the secure spark gap ignition device on the circuit board of FIG.
  • FIG. 6 shows a connection example of the busbar arrester according to the invention in a 3 + 1 arrangement in a three-phase system.
  • the line-side arresters N1, N2 and N3 are provided with a voltage-monitoring transmitting device TRAN, which generates the individual optical fiber signals LWL1, LWL2, LWL3, while the arrester between N and PE (N / PE arrester) with its short-circuit and overload protection device F interrupts the neutral conductor feed to the remote evaluation FM.
  • TRAN voltage-monitoring transmitting device

Landscapes

  • Emergency Protection Circuit Devices (AREA)
  • Gas-Insulated Switchgears (AREA)

Claims (13)

  1. Dispositif de décharge de surtensions destiné à être utilisé dans des systèmes de distribution industriels à barres omnibus et dans des installations de commutation équipées de tels systèmes, comportant un câblage interne à faible inductance et résistant aux pointes de courant, de même qu'une plaque porteuse (1) réalisée à titre de composant de boîtier,
    caractérisé en ce que
    la plaque porteuse (1) est en matériau conducteur et présente un tronçon formant bride de raccordement intégral à grande surface pour la fixation électrique et mécanique sur un rail omnibus,
    sur la plaque porteuse (1) est prévue une partie portante intérieure isolante qui sert à recevoir des disjoncteurs électriques branchés en parallèle (7', 7") à titre d'éléments de protection de court-circuit et de surcharge,
    le ou les composant(s) de limitation de tension du dispositif de décharge et/sont respectivement relié(s) par un raccord électrique directement à la plaque porteuse (1), et le ou les autre(s) raccord(s) électrique(s) et/sont raccordé(s) aux disjoncteurs électriques (7', 7") via un rail électrique (6', 6"), le second raccord desdits disjoncteurs menant à une patte de raccordement (4) extérieure,
    dans la région de la plaque porteuse (1) et du tronçon formant bride de raccordement de celle-ci est prévu un point de raccordement pour une ligne de transmission à guide d'ondes lumineuses, qui coopère avec un circuit de surveillance d'état, lesdits composants précités formant un groupe structurel modulaire qui est entouré par un boîtier extérieur (2) adapté au cas d'application respectif.
  2. Dispositif de décharge de surtensions selon la revendication 1, caractérisé en ce que, sur la partie portante intérieure, est prévue une plaque à circuits imprimés (9) avec un circuit d'allumage et d'affichage.
  3. Dispositif de décharge de surtensions selon la revendication 1 ou 2,
    caractérisé en ce que l'unité émettrice de lumière pour la ligne de transmission à guide d'ondes lumineuses est réalisée sous forme de lampe fluorescente.
  4. Dispositif de décharge de surtensions selon l'une des revendications précédentes,
    caractérisé en ce que le disjoncteur de décharge intégré est capable de laisser passer la charge de courant de pointe, pour laquelle le composant de limitation de tension est conçu, sans se déclencher lui-même, et en présence d'un courant permanent dans le réseau ou d'un court-circuit dans le dispositif de décharge, le disjoncteur se déclenche et les éléments de disjoncteurs branchés en parallèle présentent à cet effet une caractéristique de déclenchement différente.
  5. Dispositif de décharge de surtensions selon l'une des revendications précédentes,
    caractérisé en ce que l'autre raccord, qui mène à la patte de raccordement extérieure (4), est fixé sur un tronçon, renforcé sur le plan mécanique et structurel, du boîtier extérieur (2).
  6. Dispositif de décharge de surtensions selon l'une des revendications 1 à 4,
    caractérisé en ce que l'autre raccord mène à une patte de raccordement qui est réalisée sous forme de plaque de recouvrement analogue à la plaque porteuse (1), de sorte qu'il en résulte une surface de contact sur les deux faces frontales du module.
  7. Dispositif de décharge de surtensions selon l'une des revendications précédentes,
    caractérisé en ce que la plaque porteuse (1) et/ou la plaque de recouvrement comporte plusieurs évidements pour la fixation électrique et mécanique sur le rail omnibus respectif.
  8. Dispositif de décharge de surtensions selon l'une des revendications précédentes,
    caractérisé en ce que la partie portante intérieure isolante, qui se trouve sur la plaque porteuse (1), subdivise l'espace structurel qui se trouve sur la plaque porteuse de telle façon qu'il est possible d'agencer sur un côté de la partie portante intérieure le ou les composant(s) de limitation de tension, et sur le côté opposé les disjoncteurs électriques (7', 7"), ainsi que dans la région intermédiaire le circuit de surveillance d'état.
  9. Dispositif de décharge de surtensions selon l'une des revendications précédentes,
    caractérisé en ce que le boîtier extérieur (2) est relié à la plaque porteuse (1), de préférence par vissage.
  10. Dispositif de décharge de surtensions selon l'une des revendications précédentes,
    caractérisé en ce que le disjoncteur est réalisé sous forme de ligne à éclateur (8), de varistor, ou d'une combinaison de ces éléments.
  11. Dispositif de décharge de surtensions selon la revendication 10,
    caractérisé en ce que la ligne à éclateur (8) présente un boîtier de forme cylindrique et est agencée debout sur la plaque porteuse (1).
  12. Dispositif de décharge de surtensions selon la revendication 1,
    caractérisé en ce que la patte de raccordement extérieur (4) est orientée à angle droit par rapport à la surface de la plaque porteuse.
  13. Dispositif de décharge de surtensions selon l'une des revendications précédentes,
    caractérisé en ce que l'un des tronçons formant bride de raccordement est réalisé de telle manière qu'un montage du dispositif de décharge peut être effectué sous tension.
EP06116539A 2005-07-08 2006-07-04 Dispositif dérivateur de surtensions utilisé dans des systèmes de distribution à barres omnibus Not-in-force EP1746695B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL06116539T PL1746695T3 (pl) 2005-07-08 2006-07-04 Układ ochronnika przepięciowego do stosowania w przemysłowych systemach rozdzielczych z szynami zbiorczymi

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE202005010771 2005-07-08
DE202005014186U DE202005014186U1 (de) 2005-07-08 2005-09-08 Überspannungsableiter-Anordnung zum Einsatz in industriellen Sammelschienen-Verteilersystemen

Publications (2)

Publication Number Publication Date
EP1746695A1 EP1746695A1 (fr) 2007-01-24
EP1746695B1 true EP1746695B1 (fr) 2007-07-11

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EP06116539A Not-in-force EP1746695B1 (fr) 2005-07-08 2006-07-04 Dispositif dérivateur de surtensions utilisé dans des systèmes de distribution à barres omnibus

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Country Link
EP (1) EP1746695B1 (fr)
AT (1) ATE367007T1 (fr)
DE (2) DE202005014186U1 (fr)
PL (1) PL1746695T3 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008025501A1 (de) 2008-05-28 2009-12-03 Werner Turck Gmbh & Co. Kg Überspannungsschutzschaltung

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4586104A (en) * 1983-12-12 1986-04-29 Rit Research Corp. Passive overvoltage protection devices, especially for protection of computer equipment connected to data lines
US5757603A (en) * 1996-06-21 1998-05-26 Joslyn Electronic Systems Corporation Electrical surge protection device
DE19809839A1 (de) * 1998-03-02 1999-09-09 Siemens Ag Metallgekapselte, gasisolierte Schaltanlage mit gasgefüllten Behältern
DE20004593U1 (de) * 2000-03-11 2000-05-31 Phoenix Contact GmbH & Co. KG, 32825 Blomberg Sammelschienensystem mit Überspannungsschutz

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Publication number Publication date
EP1746695A1 (fr) 2007-01-24
ATE367007T1 (de) 2007-08-15
DE502006000032D1 (de) 2007-08-23
PL1746695T3 (pl) 2007-12-31
DE202005014186U1 (de) 2005-12-29

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