EP1338064B1 - Dispositif compact destine a des derivateurs de surtension multipolaires et resistants aux courants de choc et derivateurs de surtension encapsules correspondants - Google Patents

Dispositif compact destine a des derivateurs de surtension multipolaires et resistants aux courants de choc et derivateurs de surtension encapsules correspondants Download PDF

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Publication number
EP1338064B1
EP1338064B1 EP01990442A EP01990442A EP1338064B1 EP 1338064 B1 EP1338064 B1 EP 1338064B1 EP 01990442 A EP01990442 A EP 01990442A EP 01990442 A EP01990442 A EP 01990442A EP 1338064 B1 EP1338064 B1 EP 1338064B1
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EP
European Patent Office
Prior art keywords
compact arrangement
housing
arrangement according
contact
surge
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.)
Expired - Lifetime
Application number
EP01990442A
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German (de)
English (en)
Other versions
EP1338064A2 (fr
Inventor
Georg Wittmann
Edmund ZÄUNER
Peter Zahlmann
Arnd Ehrhardt
Bernhard Krauss
Michael Waffler
Stefan Hierl
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
Priority claimed from DE2000158977 external-priority patent/DE10058977B4/de
Priority claimed from DE2001118210 external-priority patent/DE10118210B4/de
Priority claimed from DE10125941A external-priority patent/DE10125941B4/de
Application filed by Dehn and Soehne GmbH and Co KG filed Critical Dehn and Soehne GmbH and Co KG
Priority to EP07111104.1A priority Critical patent/EP1833130B1/fr
Publication of EP1338064A2 publication Critical patent/EP1338064A2/fr
Application granted granted Critical
Publication of EP1338064B1 publication Critical patent/EP1338064B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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 compact arrangement for multi-pole surge current proof with in a housing substantially parallel, internally wired, encapsulated spark gaps, the spark gaps having opposite, protruding contact surfaces, which are connected to external terminals and inner contact rails or bridges, and with an electronic , located on a wiring carrier drive or trigger circuit according to the preamble of patent claim 1.
  • Multi-pole surge arresters which are resistant to surge current up to 100 kA and which contain a plurality of encapsulated spark gaps in a housing, but not in a 3 + 1 circuit, are known.
  • N-PE spark gaps are used to protect against overvoltages between the N and PE conductors. These spark gaps must have a very high surge current capability up to 100 kA 10/350 ⁇ s, in particular for protection against direct lightning strike.
  • Encapsulated spark gaps with such a performance are for example from DE 196 04 947 C1 .
  • These spark gaps have a protection level of ⁇ 2.5kV.
  • spark gaps with lower protection levels are required.
  • the use of trigger circuits is expedient.
  • Powerful N-PE spark gaps which also have an additional effective trigger electrode with consistently high performance, are not yet available.
  • the high current load, the associated high material erosion, the high dynamic loads due to current forces, pressure, energy and temperature make significant design demands with encapsulated arresters.
  • an overvoltage protection device which has coaxial main electrodes which are triggerable.
  • the connection of the electrodes takes place from the same side in order to effect a directed movement of the arc to a baffle plate within the spark gap.
  • the extension of the arc is, as already stated, not suitable for N-PE spark gap.
  • the known spark gap has no suitable expansion spaces, which allow cooling of the hot gases.
  • the resulting high pressure causes an undesirable increase the arc voltage and claimed the housing of the spark gap in mechanical terms unnecessary. Reducing the pressure load can only be achieved by means of large outlet openings, which are already effective during arc formation. However, there is a risk of undesirable leakage of electrically conductive gases.
  • the DE-AS 12 82 153 presents a spark gap that has a so-called expansion and a reflection space.
  • the reflection space is intended by the pressure generated during the arc ignition, the arc specifically press into the expansion chamber, on the one hand to protect the ignition from excessive burn and on the other hand to extend the arc, so that the quenching behavior of the spark gap is improved.
  • the object of the invention is achieved with a compact arrangement for multi-pole surge current resistant surge arrester according to the features of claim 1, wherein the dependent claims 2 - 18 include expedient refinements and developments.
  • According to one aspect of the invention is based on a housing having a trough shape with inner partitions, wherein the housing chambers thus formed receive the individual spark gaps and the respective connection terminals.
  • an insulating plate is provided, which has openings, are inserted into the spring contact elements.
  • the wiring carrier for the electronic drive or trigger circuit is located above the insulating plate, wherein the spring contacts produce an electrical connection between contact points on the underside of the wiring substrate on the one hand and the outer sheath one of the spark gaps on the other.
  • the wiring carrier is a copper-clad circuit board, wherein the contact points are executed on the underside of this circuit board as a larger area solder pads.
  • the circuit board comprises lateral, preferably cranked terminal lugs, which are electrically and mechanically connectable with the inner contact rails, which are located in the respective housing chambers.
  • the Isolierplattenunterseite has in the region of the openings preferably sleeve-like projections, which are cut at an angle to the longitudinal axis, so that on the one hand, the spring contact elements are secured against falling down and on the other hand, a conductive portion of this exposed.
  • the sleeve-like extension is closed to receive preferred cylindrical compression springs inserted on either side of the respective apertures, i. up and down over the gate free or protrude.
  • the gate of the sleeve-like projections is formed like a circle segment and complementary to the cylindrical spark gap housing.
  • the respective sleeve-like projections opposite at least one further Arretianssfortsatz is integrally formed on the insulating plate, which is adapted to its respective spark gap side oriented to the housing shape, so that the insulating plate when placing itself adjusted, whereby the assembly effort is further simplified.
  • the top of the insulating plate has molded spacer cams, which are supported against the underside of the circuit board. Undesirable force effects on the solder joints of the electronic components on the printed circuit board as well as undesirable stresses and forces on the printed circuit board are thereby minimized. In this sense, the distance cams are arranged distributed over the outer circumference of the top of the insulating.
  • the housing and the insulating plate are preferably plastic injection molded parts, i. in particular, the insulating plate with the sleeve-like projections and the distance cam is in one piece.
  • a dedicated 3-to-1 wiring plane swap bridge has a substantially Z-shape with two short, oppositely directed and one longer interconnecting legs, the attachment and electrical contacting being realized via a fit substantially only positive-fit ,
  • the longer connection leg of the wiring plane swap body may be provided with an insulation sheath.
  • the material thickness of at least the short legs is substantially the same or a small amount smaller than the height dimension of the contact surface projection of the respective spark gap.
  • the contact rails required for this purpose are formed in one embodiment of the invention as metallic angle elements, wherein a first angle leg frictionally connected to the respective projecting contact surface of the spark gap and is given over this leg a positive fit in the housing.
  • a second angle leg receives the aforementioned external terminals or serves to attach this.
  • the first angle leg of the contact rails is connected via a screw connection with the respective contact surface of the spark gap, for which purpose the bore provided there with internal thread is used.
  • the screw connection serves to secure the respective short legs of the wiring level swap body.
  • the multi-pole surge arrester with neutral conductor connects one of the contact rails three of the four spark gaps on one of the housing longitudinal sides.
  • the provided on the opposite housing longitudinal side contact rail is formed either as a single rail per spark gap or as a contact rail having insulating portions. These respective individual contact rails or the insulating portions having contact rail takes on the phase or neutral terminals.
  • a further contact rail with at least one outer connection terminal is provided, which is connected to the fourth spark gap.
  • the wiring plane swap bridge extends between the third phase spark gap and the neutral spark gap and is electrically contacted there.
  • the wiring level swap bridge preferably consists of a conductive flat material, in particular copper.
  • chambers formed in the housing accommodate the spark gaps, with the housing longitudinal sides comprising slots or slots serving to guide and secure the contact rails.
  • One of the chamber walls can be designed for the leading reception of at least one subsection of the wiring plane interchange bridge.
  • tongue-like forms or protrusions are arranged or provided, which form in the assembled state a directed to the respective first angle leg of the contact rail counter bearing, so that occurring at surge current stretching forces of the wiring plane swap body can be safely absorbed.
  • the swap body is arranged so that current flow-related electrical forces cancel each other out in the sense of compensation, which represents a further significant advantage of the invention.
  • the preferred stack arrangement of lying in a first plane spark gaps, an insulating plate located above and arranged above this circuit board with the electronic circuit reduces the space in the desired manner.
  • the insulating plate fulfills not only the task of electrical insulation, but serves as a carrier element of preferably cylindrical compression springs, the electrical contacting or connection of the control or trigger circuit with in the first this arranged printed circuit board with the electronic circuit reduces the space in the desired manner.
  • the insulating plate not only fulfills the task of electrical insulation, but serves as a carrier element of preferably cylindrical compression springs, which serve the electrical contact or connection of the control or trigger circuit with the spark gaps located in the first plane.
  • An outer cover then completes the overall arrangement and ensures the contact safety and protection of the assembly.
  • Fig. 1 6 chambers are provided in the plastic housing, which accommodate the surge arrester or spark gaps 1 to 4. To recognize are still terminals 12 and mounting screws 13th
  • an insulating plate 25 On the upwardly open housing tray, an insulating plate 25 is placed, which has a plurality of sleeve-like extensions 26 on its underside. These sleeve-like extensions serve to receive a cylindrical compression spring 27 (see also Fig. 2 ).
  • the sleeve-like extensions 26 are cut or recessed circular segment, whereby a portion of the cylindrical compression spring 27 is exposed.
  • the lower end portion 28 of the sleeve-like projections 26 is closed, whereby it is prevented that the respective cylindrical compression springs 27 can fall down.
  • the gate of the sleeve-like extensions 26 formed like a circle segment and complementary to the cylindrical spark gap housing.
  • the respective sleeve-like projections 26 opposite at least one further Arretianssfortsatz 29 is integrally formed on the underside of the insulating plate 25. Further extensions 30 in the edge region of the underside of the insulating plate secure them against undesired movement.
  • Fig. 2 is above the insulating plate 25 to arrange the aforementioned printed circuit board 33, wherein the upper ends of the cylindrical compression springs 27 come with specially trained Lot.ticianen on the underside of the circuit board, so that an electrical connection is ensured to the spark gaps.
  • the diameter of the contact points 34 is equal to or greater than the diameter of the cylindrical compression springs or the upper end of this contact spring 27.
  • the typical flat conical shape of a Lot Vietnameses leads in Connection with the flexibility of the respective cylindrical compression spring for centering and secure contact even if there are unavoidable tolerances with respect to the position and embodiment of the terminal lugs 32 and their attachment by means of screws 13.
  • the size ratios between the contact points 34 on the one hand and other solder pads 35 for mounting the electronic components on the circuit board 33 are the Fig. 5 removable, which also shows the laterally arranged terminal lugs 32.
  • the practical design of a multi-pole surge-proof surge arrester in 3 + 1 circuit leaves Fig. 3 detect.
  • the individual surge arresters 1 to 4 are located in individual chambers 5 of the plastic housing, wherein the contact rail 7 is provided on one of the housing longitudinal sides, which connects the surge arresters 1 to 3 electrically.
  • the contact rail 7 or the individual contact rails 8 to 11 are connected to a protruding contact surface 14 of the respective spark gaps 1 to 4 electrically via a screw which is received by a bore with internal thread of the protruding contact surface 14.
  • the necessary wiring plane interchangeable bridge 15 which has a substantially Z-shape, is located with its longer connecting leg between the spark gap arresters 3 and 4.
  • Fig. 3 is to form the leading receiving at least the long leg of the wiring plane changing bridge 15 a molding 16 in the corresponding chamber partition wall 17 is present.
  • a fitting bore is introduced in the short leg 18 of the wiring plane changing bridge 15, which is tuned to the outer dimensions of the projecting contact surface 14 of the respective arrester 1 to 4.
  • the respective short leg 18 can be brought into positive engagement with the projecting contact surface 14, wherein the final fixing is then carried out with the aid of a corresponding contact rail, as in the lower part of the picture Fig. 4 becomes clear.
  • the material thickness of at least the short legs 18 is substantially equal to or smaller than the height dimension of the contact surface projection 14 of the respective spark gap 1 to 4.
  • the wiring plane changing bridge 15 consists of a flat copper material, which at least in a partial area with an insulation sheath 19 (see Fig. 4 ) can be provided.
  • the contact rail 7, but also the individual contact rails 8 to 11 are formed as metallic angle elements, wherein a first angle leg 20 is non-positively connected to the respective projecting contact surface 14 of the respective spark gap.
  • a positive connection or corresponding support in the housing 6 can be achieved at the same time, which has corresponding grooves or the like recesses.
  • a second angle leg 21 carries the terminals 12th
  • the first angle leg 20 is connected via a screw connection (see Fig. 4 ) connected to the respective contact surface 14 of the respective spark gap. This screw can simultaneously secure the respective short leg 18 of the wiring level change bridge 15, as shown in the picture below right below Fig. 4 is shown.
  • Tongue-like forms or projections 22 which are arranged or introduced in the region of the short legs 18 of the wiring plane swap body 15, oriented in the mounted state towards the respective first angle leg, so that then an abutment is formed which can absorb electrodynamic forces in the surge current case. In particular, this counter bearing counteracts stretching of the bracket during the flow of current.
  • a third tongue-angle leg 24 (see the upper part of the picture Fig. 4 ) as a cable fixing pressure plate. This third tongue-angle leg 24 is substantially opposite to the second angle leg 21.

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  • Emergency Protection Circuit Devices (AREA)
  • Thermistors And Varistors (AREA)

Abstract

L'invention concerne un dispositif compact destiné à des dérivateurs de surtension multipolaires et résistants aux courants de choc comprenant des éclateurs disposés de manière sensiblement parallèle dans un boîtier, encapsulés et à câblage interne. Les éclateurs présentent des surfaces de contact saillantes opposées qui sont reliées à des bornes de raccord externes ainsi qu'à des rails de contacts internes ou à des ponts de contact. Ce dispositif compact comprend également un circuit de commande ou de déclenchement électronique se trouvant sur un support de câblage. Le boîtier, pourvu de parois de séparation, a une forme de cuve, les chambres de boîtier étant conçues de telle façon qu'elles abritent les éclateurs et les bornes de contact. Une plaque isolante, placée sur la cuve de boîtier ouverte vers le haut, présente des orifices dans lesquels on insère des éléments de contact élastiques. De plus, le support de câblage se trouve au-dessus de la plaque isolante, les éléments de contact élastiques créant une liaison électrique entre des points de contact sur la face inférieure du support de câblage et l'enveloppe respectivement d'un éclateur. L'invention concerne également un dérivateur de surtension encapsulé pourvu d'un dispositif éclateur et comprenant deux électrodes principales métalliques qui sont placées de manière coaxiale et chevauchent au moins partiellement des connexions de direction opposée. Les électrodes principales en liaison avec au moins une partie isolateur constituent un compartiment d'arc. Selon l'invention, au moins une électrode principale présente un compartiment d'expansion interne et au moins une zone d'une partie d'isolation externe présente d'une électrode de déclenchement s'étendant, de préférence, radialement ou axialement à symétrie de rotation.

Claims (18)

  1. Agencement compact pour dérivateurs de surtensions multipolaires résistants aux courants de choc comprenant des éclateurs encapsulés (1 à 4) agencés essentiellement parallèlement dans un boîtier (16) et câblés en interne, dans lequel les éclateurs (1 à 4) comportent des surfaces de contact (14) opposées en saillie, qui sont reliées à des bornes de raccordement extérieures (12) ainsi qu'à des rails de contact intérieurs (7) ou des pontets de contact intérieurs, et comprenant un circuit de pilotage ou circuit de gâchette électronique qui se trouve sur un support de câblage (33), le boîtier (6) possède une forme en cuvette pourvue de parois de séparation (17), de telle sorte que les chambres de boîtier (5) ainsi formées reçoivent les éclateurs (1 à 4) et les bornes de raccordement (12),
    caractérisé en ce que
    sur la cuvette de boîtier ouverte vers le haut il est prévu une plaque isolante (25) qui comporte des ouvertures dans lesquelles des éléments de contact à ressort (27) sont mis en place,
    le support de câblage (33) se trouve en outre au-dessus de la plaque isolante (25), et les éléments de contact à ressort (27) réalisent une liaison électrique entre des points de contact (34) à la face inférieure du support de câblage (33) et l'enveloppe de l'un des éclateurs respectifs (1 à 4).
  2. Agencement compact selon la revendication 1,
    caractérisé en ce que le support de câblage (33) est une plaque à circuits imprimés doublée de cuivre, dans lequel les points de contact (34) sont réalisés sous forme d'îlots de brasage à grande surface (35).
  3. Agencement compact selon la revendication 1 ou 2,
    caractérisé en ce que la carte à circuits imprimés (33) comprend des pattes de raccordement latérales (32), lesquelles peuvent être reliées sur le plan électrique avec des rails de contact intérieurs (7), de sorte qu'il se produit de ce fait simultanément un blocage mécanique de la plaque isolante (25), qui contient les éléments de contact à ressort (27).
  4. Agencement compact selon l'une des revendications précédentes,
    caractérisé en ce que la face inférieure (25) de la plaque isolante comprend, dans la région des ouvertures, des prolongements (27) semblables à des douilles, lesquels sont découpés sous un angle par rapport à l'axe longitudinal, de sorte que d'une part les éléments de contact à ressort (27) sont assurés à l'encontre d'une chute vers le bas, et que d'autre part un tronçon conducteur de ces éléments de contact est dénudé.
  5. Agencement compact selon la revendication 4,
    caractérisé en ce que les éclateurs encapsulés (1 à 4) possèdent une forme essentiellement cylindrique ou une forme partielle de ce type, de sorte que la découpe des prolongements (26) semblables à des douilles est réalisée à la manière d'un segment circulaire complémentaire du boîtier cylindrique de l'éclateur ou d'une partie de boîtier correspondante.
  6. Agencement compact selon l'une des revendications précédentes,
    caractérisé en ce que les éléments de contact à ressort sont des ressorts de compression cylindriques (27) qui dépassent des deux côtés de l'ouverture respective.
  7. Agencement compact selon la revendication 5,
    caractérisé en ce qu'il est prévu, à l'opposé du prolongement (26) semblable à une douille, au moins un autre prolongement de blocage (29), lequel est ajusté, avec son côté orienté vers l'éclateur respectif (1 à 4), à la forme de son boîtier.
  8. Agencement compact selon l'une des revendications précédentes,
    caractérisé en ce que la face supérieure de la plaque isolante (25) comprend des bosses d'écartement (31) conformées.
  9. Agencement compact selon l'une des revendications précédentes,
    caractérisé en ce que le boîtier (6) et la plaque isolante (25) sont en matière plastique moulée par injection.
  10. Agencement compact selon l'une des revendications précédentes, caractérisé en ce qu'il est prévu un pontet d'échange de plan de câblage (15) avec essentiellement une forme en Z avec deux branches de liaison courtes (18) orientées en sens opposés et une branche de liaison longue, dans lequel des perçages ajustés ou des évidements sont ménagés dans les branches courtes (18), perçages ou évidements qui correspondent à la dimension extérieure de parties en saillie (14) des éclateurs, l'épaisseur du matériau des branches courtes (18) au moins étant essentiellement égale ou inférieure à la taille maximum d'une saillie (14) des surfaces de contact des éclateurs (1 à 4), et la branche longue s'étend dans la distance de l'espace structurel entre deux des éclateurs (1 à 4).
  11. Agencement compact selon la revendication 10,
    caractérisé en ce que les rails de contact (8 à 11) sont réalisés sous forme d'éléments métalliques en équerre, de sorte qu'une première branche d'équerre (20) est reliée en coopération de forces à la surface de contact respective (14) en saillie des éclateurs (1 à 4), et cette branche assure un maintien dans le boîtier en coopération de formes, et une seconde branche d'équerre (21) porte en outre les bornes de raccordement extérieures (12).
  12. Agencement compact selon la revendication 11,
    caractérisé en ce que la première branche d'équerre (20) est reliée par une liaison vissée à la surface de contact respective des éclateurs (1 à 4).
  13. Agencement compact selon la revendication 12,
    caractérisé en ce que la liaison vissée assure simultanément la branche courte respective (17) du pontet d'échange de plan de câblage (15).
  14. Agencement compact selon la revendication 10,
    caractérisé en ce que, pour un agencement triphasé avec un conducteur neutre, un des rails de contact relie trois (1 à 3) des quatre éclateurs à l'un des côtés longitudinaux du boîtier, et le rail de contact (7) prévu sur le côté longitudinal opposé du boîtier comporte des tronçons isolants ou bien est interrompu et reçoit les bornes de raccordement des phases ainsi que celle du conducteur neutre, et pour le raccordement PE un rail de contact avec au moins une borne de raccordement extérieure est relié au quatrième éclateur (4), et le pontet d'échange de plan de câblage (15) se trouve entre le troisième éclateur de phase et l'éclateur du conducteur neutre et est mis en contact électrique à cet endroit.
  15. Agencement compact selon la revendication 10,
    caractérisé en ce que le pontet d'échange de plan de câblage (15) est en un matériau plat conducteur, en particulier en cuivre.
  16. Agencement compact selon la revendication 10,
    caractérisé en ce qu'une paroi de séparation de chambre (17) est réalisée en vue de recevoir en le guidant au moins un tronçon partiel du pontet d'échange de plan de câblage (15).
  17. Agencement compact selon l'une des revendications 10 à 16,
    caractérisé en ce que, dans la région des branches courtes (18) du pontet d'échange de plan de câblage (15) sont agencés des reliefs ou des saillies (22) semblables à des languettes qui, dans l'état monté, forment une contrebutée orientée vers la première branche d'équerre respective.
  18. Agencement compact selon la revendication 11,
    caractérisé en ce que lorsque les rails de contact (8 à 11) ont par tronçon sensiblement une forme en U, une troisième branche d'équerre (24) en forme de languette, à l'opposé de la seconde branche d'équerre (21), forme une plaque de pression d'une fixation de câble.
EP01990442A 2000-11-28 2001-11-27 Dispositif compact destine a des derivateurs de surtension multipolaires et resistants aux courants de choc et derivateurs de surtension encapsules correspondants Expired - Lifetime EP1338064B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP07111104.1A EP1833130B1 (fr) 2000-11-28 2001-11-27 Dérivateur de surtensions encapsulé

Applications Claiming Priority (9)

Application Number Priority Date Filing Date Title
DE10058977 2000-11-28
DE2000158977 DE10058977B4 (de) 2000-11-28 2000-11-28 Mehrpoliger stoßstromfester Überspannungsableiter
DE10111954 2001-03-13
DE10111954 2001-03-13
DE2001118210 DE10118210B4 (de) 2001-04-11 2001-04-11 Gekapselter Überspannungsableiter mit einer Funkenstreckenanordnung
DE10118210 2001-04-11
DE10125941 2001-05-28
DE10125941A DE10125941B4 (de) 2001-03-13 2001-05-29 Kompaktanordnung für mehrpolige stoßstromfeste Überspannungsableiter
PCT/EP2001/013775 WO2002045224A2 (fr) 2000-11-28 2001-11-27 Dispositif compact destine a des derivateurs de surtension multipolaires et resistants aux courants de choc et derivateurs de surtension encapsules correspondants

Related Child Applications (2)

Application Number Title Priority Date Filing Date
EP07111104.1A Division EP1833130B1 (fr) 2000-11-28 2001-11-27 Dérivateur de surtensions encapsulé
EP07111104.1 Division-Into 2007-06-27

Publications (2)

Publication Number Publication Date
EP1338064A2 EP1338064A2 (fr) 2003-08-27
EP1338064B1 true EP1338064B1 (fr) 2011-09-28

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EP01990442A Expired - Lifetime EP1338064B1 (fr) 2000-11-28 2001-11-27 Dispositif compact destine a des derivateurs de surtension multipolaires et resistants aux courants de choc et derivateurs de surtension encapsules correspondants

Country Status (4)

Country Link
US (1) US7271992B2 (fr)
EP (1) EP1338064B1 (fr)
AU (1) AU2002229570A1 (fr)
WO (1) WO2002045224A2 (fr)

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Also Published As

Publication number Publication date
US20040160723A1 (en) 2004-08-19
EP1338064A2 (fr) 2003-08-27
AU2002229570A1 (en) 2002-06-11
WO2002045224A2 (fr) 2002-06-06
US7271992B2 (en) 2007-09-18
WO2002045224A3 (fr) 2003-01-03

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