EP3127199B1 - Parafoudre - Google Patents

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Publication number
EP3127199B1
EP3127199B1 EP15713185.5A EP15713185A EP3127199B1 EP 3127199 B1 EP3127199 B1 EP 3127199B1 EP 15713185 A EP15713185 A EP 15713185A EP 3127199 B1 EP3127199 B1 EP 3127199B1
Authority
EP
European Patent Office
Prior art keywords
housing
combustion chamber
insulating body
surge arrester
arc
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.)
Active
Application number
EP15713185.5A
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German (de)
English (en)
Other versions
EP3127199A1 (fr
Inventor
Maik Dittert
Thomas Meyer
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.)
Phoenix Contact GmbH and Co KG
Original Assignee
Phoenix Contact GmbH and Co KG
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Publication date
Application filed by Phoenix Contact GmbH and Co KG filed Critical Phoenix Contact GmbH and Co KG
Publication of EP3127199A1 publication Critical patent/EP3127199A1/fr
Application granted granted Critical
Publication of EP3127199B1 publication Critical patent/EP3127199B1/fr
Active 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
    • H01T1/00—Details of spark gaps
    • H01T1/02—Means for extinguishing arc
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01T—SPARK GAPS; OVERVOLTAGE ARRESTERS USING SPARK GAPS; SPARKING PLUGS; CORONA DEVICES; GENERATING IONS TO BE INTRODUCED INTO NON-ENCLOSED GASES
    • H01T1/00—Details of spark gaps
    • H01T1/20—Means for starting arc or facilitating ignition of spark gap
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01T—SPARK GAPS; OVERVOLTAGE ARRESTERS USING SPARK GAPS; SPARKING PLUGS; CORONA DEVICES; GENERATING IONS TO BE INTRODUCED INTO NON-ENCLOSED GASES
    • H01T2/00—Spark gaps comprising auxiliary triggering means
    • H01T2/02—Spark gaps comprising auxiliary triggering means comprising a trigger electrode or an auxiliary spark gap
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01T—SPARK GAPS; OVERVOLTAGE ARRESTERS USING SPARK GAPS; SPARKING PLUGS; CORONA DEVICES; GENERATING IONS TO BE INTRODUCED INTO NON-ENCLOSED GASES
    • H01T4/00—Overvoltage arresters using spark gaps
    • H01T4/10—Overvoltage arresters using spark gaps having a single gap or a plurality of gaps in parallel
    • H01T4/12—Overvoltage arresters using spark gaps having a single gap or a plurality of gaps in parallel hermetically sealed

Definitions

  • the invention relates to a surge arrester for use in the power supply of low-voltage networks, in particular for use between a neutral conductor N and a potential equalization PE, with a cylindrical housing, with two axially opposite electrodes and with an arc combustion chamber formed in the interior of the housing, the arc combustion chamber is axially delimited by the two electrodes and a spark gap is formed between the two electrodes, so that an arc arises between the two electrodes when the spark gap is ignited.
  • the affected devices, systems and lines must be short-circuited with the potential equalization in the shortest possible time.
  • Different components are used depending on the location (protection zone) and the type of equipment and systems to be protected. The individual components differ essentially in their response behavior and their dissipation capacity.
  • surge arresters An essential component of surge arresters of the type in question here is a spark gap which responds to a certain overvoltage, an arc being formed between the two electrodes when the spark gap is ignited. Very high and steeply rising currents with values up to the three-digit kA range can flow over the spark gap.
  • surge arresters which are intended as lightning current arresters for use between a neutral conductor N and the equipotential bonding PE or a PE conductor, must have a very high surge current discharge capacity of up to 100 kA 10/350 ⁇ s. Due to the pressures and forces occurring in the interior of the surge arrester, such surge arresters are generally arranged in pressure-resistant housings.
  • Surge arresters with a spark gap have the advantage of a high surge current carrying capacity, but also the disadvantage of a relatively high one and also not particularly constant response voltage. For this reason, different types of ignition aids have long been used to ignite spark gaps, with the aid of which the response voltage of the spark gap or the surge arrester is reduced.
  • cooling channels are provided in the housing in the known surge arrester, through which the hot, ionized gases produced in the arc combustion chamber during the discharge process are discharged from the housing. So that the gases flowing out of the housing do not have too high a temperature, the cooling channels must be designed in such a way that they provide a sufficiently long distance that flows along the plasma in the housing.
  • the one from the DE 103 38 835 A1 known surge arrester This is achieved in that the housing is formed in two parts and the two housing halves are arranged coaxially to one another, with helical cooling channels being arranged between the two housing parts, through which the plasma can flow on the one hand and which simultaneously serve to screw the two housing parts together ,
  • the present invention is therefore based on the object of further developing the surge arrester described at the outset in such a way that the aforementioned disadvantages are avoided as far as possible.
  • the blowing out of ionized gases should be avoided, but the surge arrester should be as small as possible.
  • the surge arrester according to the invention is therefore an encapsulated surge arrester which has no outflow or blow-out openings through which ionized gas is deliberately released into the environment.
  • the two chambers are arranged in the longitudinal direction of the housing on opposite sides of the arc combustion chamber, the two chambers each having an axial and a radial distance from the arc combustion chamber. From the point of view of the arc combustion chamber, the two chambers, which serve to receive the hot, ionized gases generated during the discharge process, are thus arranged radially outwardly behind the electrodes or their end faces delimiting the arc combustion chamber.
  • the design and arrangement of the two chambers within the housing according to the invention initially enable hot, conductive gases produced by the burning arc to flow out of the arc combustion chamber during the discharge process, so that a line follow current is extinguished and the spark gap below the response voltage of the surge arrester is prevented from being re-ignited ,
  • the arrangement of the two chambers on opposite sides of the arc combustion chamber and behind the electrodes generates a force or pressure in the direction of the electrodes by the gas flowing into the chambers, which counteracts the pressure which occurs when the spark gap is ignited in the Arc combustion chamber is created. This reduces the load on the two electrodes of the spark gap.
  • the desired large volume of the two chambers in comparison to the volume of the arc combustion chamber can preferably be achieved in a relatively simple manner in that the two chambers are annular.
  • the fact that the volume required for the chambers in the housing behind an overvoltage arrester in the area behind the electrodes can be made available in the simplest manner is advantageously used without the external dimensions of the overvoltage arrester having to be enlarged.
  • the ring-shaped training leads of the two chambers also to a lower mechanical load on the housing, since the pressures and forces act on the housing in an essentially evenly distributed manner.
  • a cylindrical insulating body is arranged in the housing of the surge arrester, which has a bore extending in the longitudinal direction of the housing, into which the two electrodes protrude with their front side facing the arc combustion chamber, so that the insulating body radially surrounds the arc combustion chamber.
  • the at least one channel is at least partially formed by the insulating body.
  • the arc combustion chamber is thus delimited in the axial direction by the two electrodes lying opposite one another or their end faces and in the radial direction by the cylindrical insulating body.
  • the delimitation of the arc combustion chamber in the radial direction is interrupted by the at least one channel via which the arc combustion chamber is connected to the two chambers.
  • the at least one channel between the arc combustion chamber and the two chambers can be realized simply by forming corresponding recesses, openings or free spaces in the insulating body which allow the gas to flow from the arc combustion chamber into the two chambers.
  • the actual channel does not have to be completely surrounded by the insulating body, but can also be formed - in whole or in sections - by a section of the insulating body and a section of another component opposite the section of the insulating body.
  • the insulating body also serves to ensure permanent insulation between the two electrodes and for the mechanical stability of the spark gap, in that the insulating body ensures that the distance between the two electrodes remains unchanged even after a discharge process.
  • the insulating body is preferably designed such that it has an inner section surrounding the bore and a sleeve-shaped outer section which has a greater extent in the longitudinal direction of the housing than the inner section.
  • the sleeve-shaped outer section also serves to isolate the electrodes from the housing, in particular if the housing is preferably made of metal, while the inner section serves to ensure permanent insulation between the two electrodes and for the mechanical stability of the spark gap.
  • at least a part of the channel is formed between the inner section and the outer section of the insulating body.
  • the inner section of the insulating body preferably has two circular-shaped webs which only overlap in the circumferential direction of the inner section in a small area and are arranged one behind the other in the longitudinal direction of the housing.
  • the two circular webs thus together form at least a part of the radial delimitation of the bore of the insulating body, the two webs, however, being arranged axially offset from one another.
  • the two webs in the form of a circular arc thus have a thickness which extends in the longitudinal direction of the housing and which is less than the corresponding total thickness of the inner section of the insulating body, so that in each case there is a free space through which the ionized gas can flow.
  • the two circular-arc-shaped webs are at a radial distance from the outer section of the insulating body, so that the gas can flow between the webs and the outer section.
  • Two channels are formed by the two arcuate webs, which connect the arc combustion chamber to both chambers.
  • the two channels each have a first radially extending channel section and a second axially running channel section, the first channel sections being connected to the arc combustion chamber and the second channel sections each being connected to both chambers.
  • Hot ionized gas which arises after the spark gap has been ignited by the arc in the arc combustion chamber, can thus flow radially past or along the two arc-shaped webs and then axially between and along the outer edge of the arc-shaped webs and the outer section of the insulating body the inner surface of the sleeve-shaped outer portion flow into the two chambers.
  • the surge arrester according to the invention preferably has a starting aid arranged inside the housing and comprising at least one starting element and one starting electrode.
  • the ignition element and the ignition electrode are in contact with the arc combustion chamber, the ignition element being electrically conductively connected on one side to one electrode and on the other side to the ignition electrode.
  • the basic structure of the ignition aid used in the surge arrester according to the invention can be constructed in the same way as that in FIG DE 103 38 835 A1 described ignition aid is constructed.
  • the inner section of the insulating body preferably has a receiving area for the ignition element and the ignition electrode, which has an opening to the arc combustion chamber through which the ignition electrode and the ignition element be in contact with the arc combustion chamber.
  • the receiving area formed on the inner section of the insulating body is preferably arranged in the circumferential direction of the inner section between the two circular-arch-shaped webs, so that the inner section of the insulating body is divided into three regions in the circumferential direction, namely the two circular-arch-shaped webs which overlap in a small area , and the receiving area for the ignition element and the ignition electrode, which is preferably arranged opposite the overlap area.
  • the housing is preferably made of metal, in particular steel.
  • the housing is formed in two parts, wherein it consists of a cup-shaped first housing part and a corresponding housing cover.
  • the housing cover preferably has an external thread, so that this can be screwed into the first housing part, which has a corresponding internal thread for this purpose.
  • the two electrodes are also each arranged in the end face of an electrode holder in the surge arrester according to the invention.
  • This has the advantage that different materials can be used for the electrodes on the one hand and for the electrode holders on the other hand, the electrodes themselves generally being made of tungsten or a composite material, for example a tungsten-copper alloy, and the electrode holders made of brass. While the ends of the electrode holders facing away from the electrodes for electrical connection of the electrodes each protrude from one end of the housing, the end of the electrode holder receiving the electrodes rests on one side against the inner section of the insulating body, so that the end side surrounding the electrodes Electrode holder are covered by the inner portion of the insulating body.
  • the two electrode holders cannot be electrically connected via the metallic housing, the electrode holders are each surrounded by an insulating sleeve which is open on both sides.
  • this ensures reliable and permanent insulation between the two electrode holders and thus also between the conductors connected to the electrode holders, in particular a neutral conductor and the equipotential bonding or a PE conductor.
  • FIGS. 1 to 4 show a surge arrester 1 according to the invention, wherein in the Fig. 4 an exploded view of the surge arrester 1 is shown, so that the individual components of the surge arrester 1 can be seen.
  • the surge arrester 1 according to the invention is intended in particular for use between a neutral conductor N and the equipotential bonding PE, so that the surge arrester 1 must have a surge current discharge capacity of up to 100 kA 10/350 ⁇ s. In addition, it must be possible to safely delete line follow currents up to 100 A.
  • the surge arrester 1 has a cylindrical housing 2, in the interior of which two electrodes 3, 4 lying axially opposite one another are arranged.
  • the housing 2 is made of steel and has a cup-shaped first housing part 2a and a housing cover 2b which is screwed into the first housing part 2a. This provides a pressure-resistant and at the same time very compact housing.
  • the distance between the two electrodes and thus the extent of the arc combustion chamber 5 in the longitudinal direction of the housing 2 is less than 1 mm, preferably only about 0.8 mm, in the illustrated surge arrester 1.
  • two chambers 6, 7 are formed within the housing 2, both of which are connected to the arc combustion chamber 5 via two channels 8, 9.
  • the two chambers 6, 7 are arranged in the longitudinal direction of the housing 2 on opposite sides of the arc combustion chamber 5.
  • the two chambers 6, 7 each have an axial and radial distance from the arc combustion chamber 5, so that the two chambers 6, 7 are arranged behind the electrodes 3, 4, offset radially outwards from the perspective of the arc combustion chamber 5.
  • the volume of the two annular chambers 6, 7 together is considerably larger than the volume of the arc combustion chamber 5.
  • the ratio of the volume of the two chambers 6, 7 to the volume of the arc combustion chamber 5 is preferably approximately 20: 1.
  • An essential component of the surge arrester 1 according to the invention is the cylindrical insulating body 10 which is arranged in the interior of the housing 2 and which in the Fig. 5 and 6 is shown enlarged.
  • the insulating body 10 has a bore 11 which extends in the longitudinal direction of the housing 2 and into which the two electrodes 3, 4 each project with their end face facing the arc combustion chamber 5.
  • the insulating body 10 has an inner section 12 surrounding the bore 11 and a sleeve-shaped outer section 13 which has a significantly greater extension in the longitudinal direction of the housing 2 than the inner section 12, as shown in the two sectional representations according to FIGS Fig. 3 and 4 can be seen.
  • the inner section 12 of the insulating body 10 has two circular webs 14, 15 which overlap in the circumferential direction of the inner section 12 only in a small, web-like area 16 and are arranged one behind the other in the longitudinal direction of the housing 2.
  • the two arcuate webs 14, 15 also have a radial distance from the outer section 13 of the insulating body 10, so that between the outer edge of the arcuate webs 14, 15 and the sleeve-shaped outer section 13, two passages 17 are formed for the gas, one Form part of the two channels 8, 9.
  • the two channels 8, 9 each have a first radially extending channel section 8a, 9a and a second axially extending channel section 8b, 9b.
  • the first channel sections 8a, 9a which are delimited on each side by a web 14, 15, are connected to the arc combustion chamber 5, while the second channel sections 8b, 9b are each connected to both chambers 6, 7.
  • the passages 17 provided between the circular webs 14, 15 and the sleeve-shaped outer section 13 make it possible for hot ionized gas to flow from the arc combustion chamber 5 into both chambers 6, 7 via both channels 8, 9. The gas can thus flow from the arc combustion chamber 5 radially past or along the two circular webs 14, 15 and then flow axially along the inner surface of the sleeve-shaped outer section 13 into both chambers 6, 7.
  • the insulating body 10 also serves to receive an ignition element 18 and an ignition electrode 19, which together form an ignition aid for the spark gap of the surge arrester 1.
  • a receiving area 20 is provided in the inner section 12 of the insulating body 10, which has an opening 21 to the arc combustion chamber 5, so that the ignition element 18 and the ignition electrode 19 are in contact with the arc combustion chamber 5 through the opening 21, as is the case here Fig. 3 can be seen. From the top view of the insulating body 10 according to Fig.
  • the receiving area 20 is arranged in the circumferential direction of the inner section 12 between the two circular-arch-shaped webs 14, 15, the two circular-arc-shaped webs 14, 15 and the receiving area 20 each covering approximately a third of the circumference of the inner section 12 of the insulating body 10 extend.
  • the inner section 12 of the insulating body 10 is thus functionally divided into three areas, the spark gap being ignited in the receiving area 20 for the ignition element 18 and the ignition electrode 19, while the circular webs 14, 15 each form part of the two channels 8, 9 form for the flow of the ionized gas from the arc combustion chamber 5 into the two cylindrical chambers 6, 7.
  • the web-like region 16, in which the circular-arch-shaped webs 14, 15 overlap is connected to the outer section 13 of the insulating body 10.
  • the web-like region 16 is also made very stable, so that it is ensured that the distance between the two electrodes 3, 4 from one another remains permanently unchanged.
  • the edge of the receiving area 20 also serves this purpose, which is also connected to the outer section 13 of the insulating body 10 and has the same thickness as the web-like area 16.
  • the outer section 13 of the insulating body 10 has a cutout 22 which, viewed in the circumferential direction of the insulating body 10, is arranged in the inner section 12 corresponding to the receiving area 20 for the ignition element 18 and the ignition electrode 19.
  • the cutout 22 ensures that the ignition electrode 19 is in contact with the housing 2 with its outer edge facing away from the arc combustion chamber 5. It also makes training easier the recess 22 in the outer section 13 of the insulating body 10, the installation of the surge arrester 1, since the ignition electrode 19 and the ignition element 18 can thus be inserted more easily into the receiving area 20 on the inner section 12 of the insulating body 10.
  • the two electrodes 3, 4, which are preferably made of tungsten, are each arranged in the end face of an electrode holder 23, 24.
  • the end face of the electrode holders 23, 24 receiving the electrodes 3, 4 each abut on one side against the inner section 12 of the insulating body 10, namely in each case against an arcuate web 14 or 15.
  • the ends of the electrode holders 23, 24 facing away from the electrodes 3, 4, on the other hand, protrude from the housing 2, for which purpose a bore 25, 26 is arranged in the bottom of the cup-shaped first housing part 2a and in the housing cover 2b.
  • the radially extending channel sections 8a, 9a formed in the interior of the insulating body 10 are thus delimited on one side in each case by an arcuate web 14, 15 and on the other side by the opposite region of the end face of an electrode holder 23, 24.
  • the hot ionized gases generated during the discharge process can flow unhindered through the channel sections 8a, 9a, so that there is no deposition of conductive particles on the end faces of the electrode holders 23, 24.
  • the end faces of the electrode holders 23, 24 are also not exposed to high temperatures for an extended period of time. This prevents damage to the electrode holders 23, 24 or leakage currents or short circuits due to conductive deposits in the case of electrode holders 23, 24 made of brass.
  • the two electrode holders 23, 24 are each surrounded by an insulating sleeve 27, 28 which is open on both sides. So that the insulation between the electrode holder 24 on the right in the figures and the cup-shaped first housing part 2a is also ensured in the area of the recess 22 in the outer section 13 of the insulating body 10, the insulating sleeve 28 assigned to the electrode holder 24 has an axially and radially projecting one Collar 29, which engages in the recess 22, so that the insulation to the first housing part 2a is interrupted only in the area of the ignition element 18 and the ignition electrode 19.

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Claims (12)

  1. Parafoudre destiné à être utilisé dans l'alimentation de réseaux à basse tension, en particulier à être inséré entre un conducteur neutre N et un équilibrage de potentiel PE, le parafoudre comprenant un boîtier (2) cylindrique, deux électrodes (3, 4) opposées axialement l'une à l'autre et une chambre de combustion à arc (5) formée à l'intérieur du boîtier (2),
    un corps isolant (10) cylindrique étant disposé dans le boîtier (2) et comportant un alésage (11) qui s'étend dans la direction longitudinale du boîtier (2) et dans lequel font saillie les deux électrodes (3, 4) avec leur face d'extrémité dirigée vers la chambre de combustion à arc (5) de sorte que le corps isolant (10) entoure radialement la chambre de combustion à arc (5),
    la chambre de combustion à arc (5) étant limitée dans la direction axiale par les deux électrodes (3, 4) et dans la direction radiale par le corps isolant (10) cylindrique, et
    un éclateur étant formé entre les deux électrodes (3, 4) de sorte qu'un arc se produise entre les deux électrodes (3, 4) lors de l'allumage de l'éclateur,
    deux chambres (6, 7) étant formées dans le boîtier (2), chacune desquelles est reliée par au moins un conduit (8, 9) à la chambre de combustion à arc (5) de sorte que, après l'allumage de l'éclateur, du gaz ionisé chaud puisse s'écouler de la chambre de combustion à arc (5) jusque dans les chambres (6, 7),
    le volume des deux chambres (6, 7) étant conjointement supérieur au volume de la chambre de combustion à arc (5),
    les deux chambres (6, 7) étant disposées dans la direction longitudinale du boîtier (2) sur des côtés opposés de la chambre de combustion à arc (5) et étant entourées par le boîtier (2), et
    les conduits (8, 9) étant au moins partiellement formés par le corps isolant (10),
    caractérisé en ce que
    les deux chambres (6, 7) se trouvent chacune à une distance axiale et une distance radiale de la chambre de combustion à arc (5).
  2. Parafoudre selon la revendication 1, caractérisé en ce que le corps isolant (10) comporte une partie intérieure (12) entourant l'alésage (11) et une partie extérieure (13) en forme de manchon qui présente dans la direction longitudinale du boîtier (2) une extension supérieure à celle de la partie intérieure (12).
  3. Parafoudre selon la revendication 2, caractérisé en ce que la partie intérieure (12) du corps isolant (10) comporte deux nervures (14, 15) en forme d'arc de cercle qui se chevauchent dans la direction périphérique de la partie intérieure (12) uniquement dans une petite zone (16) et qui sont disposées l'une derrière l'autre dans la direction longitudinale du boîtier (2), les deux nervures (14, 15) en forme d'arc de cercle se trouvant à une distance radiale de la partie extérieure (13) du corps isolant (10) de façon à former deux conduits (8, 9) qui relient la chambre de combustion à arc (5) à chacune des deux chambres (6, 7), les deux conduits (8, 9) comportant chacun une première partie de canal (8a, 9a) qui s'étend radialement et une deuxième partie de conduit (8b, 9b) qui s'étend axialement, les premières parties de conduit (8a, 9a) étant reliées à la chambre de combustion à arc (5) et les deuxièmes parties de conduit (8b, 9b) étant reliées à chacune des deux chambres (6, 7).
  4. Parafoudre selon l'une des revendications 1 à 3, caractérisé en ce qu'un auxiliaire d'allumage est prévu à l'intérieur du boîtier (2) et comporte un élément d'allumage (18) et une électrode d'allumage (19), l'élément d'allumage (18) et l'électrode d'allumage (19) étant en contact avec la chambre de combustion à arc (5) et l'élément d'allumage (18) étant relié d'un côté à l'une des électrodes (4) et de l'autre côté à l'électrode d'allumage (19) de manière électriquement conductrice.
  5. Parafoudre selon la revendication 4, caractérisé en ce que la partie intérieure (12) du corps isolant (10) comporte une zone de réception (20), destinée à l'élément d'allumage (18) et l'électrode d'allumage (19), la zone de réception (20) comportant une ouverture (21) menant dans la chambre de combustion à arc (5).
  6. Parafoudre selon la revendication 5, caractérisé en ce que la zone de réception (20) de la partie intérieure (12) du corps isolant (10) est disposée entre les deux nervures (14, 15) en forme d'arc de cercle dans la direction périphérique de la partie intérieure (12).
  7. Parafoudre selon la revendication 6, caractérisé en ce que la partie extérieure (13) du corps isolant (10) comporte un évidement (22) qui est disposé en correspondance de la zone de réception (20) destinée à l'élément d'allumage (18) et à l'électrode d'allumage (19) de la partie intérieure (12) .
  8. Parafoudre selon l'une des revendications 1 à 7, caractérisé en ce que le boîtier (2) est en métal, notamment en acier et est formé de deux parties, à savoir une première partie de boîtier (2a) en forme de pot et un couvercle de boîtier (2b).
  9. Parafoudre selon l'une des revendications 2 à 8, caractérisé en ce que les deux électrodes (3, 4) sont chacune disposées dans la face d'extrémité d'un support d'électrode (23, 24), les faces d'extrémité des supports d'électrode (23, 24), lesquelles reçoivent les électrodes (3, 4), venant chacune en appui d'un côté sur la partie intérieure (12) du corps isolant (10) et les extrémités des supports d'électrode (23, 24), opposées aux électrodes (3, 4), dépassant chacune du boîtier (2) sur une face d'extrémité du boîtier (2).
  10. Parafoudre selon les revendications 8 et 9, caractérisé en ce que les supports d'électrode (23, 24) sont entourés par un manchon isolant (27, 28) qui est ouvert des deux côtés et par le biais duquel les supports d'électrode (23, 24) sont isolés du boîtier (2).
  11. Parafoudre selon les revendications 7 et 10, caractérisé en ce qu'un manchon isolant (28) comporte sur son côté dirigé vers la chambre de combustion à arc (5) une collerette (29) qui déborde axialement et radialement et qui fait saillie dans l'évidement (22) de la partie extérieure (13) du corps isolant (10).
  12. Parafoudre selon l'une des revendications 1 à 11, caractérisé en ce que les deux chambres (6, 7) ont une forme annulaire.
EP15713185.5A 2014-04-01 2015-03-27 Parafoudre Active EP3127199B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102014104576.9A DE102014104576B4 (de) 2014-04-01 2014-04-01 Überspannungsableiter
PCT/EP2015/056709 WO2015150253A1 (fr) 2014-04-01 2015-03-27 Parasurtenseur

Publications (2)

Publication Number Publication Date
EP3127199A1 EP3127199A1 (fr) 2017-02-08
EP3127199B1 true EP3127199B1 (fr) 2019-12-25

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EP15713185.5A Active EP3127199B1 (fr) 2014-04-01 2015-03-27 Parafoudre

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Country Link
EP (1) EP3127199B1 (fr)
CN (1) CN106463911B (fr)
DE (1) DE102014104576B4 (fr)
WO (1) WO2015150253A1 (fr)

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CN107578864B (zh) * 2017-08-24 2024-01-30 王巨丰 一种具有四侧喷射通道的曲折同步压缩灭弧防雷装置

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WO2015150253A1 (fr) 2015-10-08
DE102014104576A1 (de) 2015-10-01
EP3127199A1 (fr) 2017-02-08
DE102014104576B4 (de) 2016-02-11
CN106463911B (zh) 2018-10-12
CN106463911A (zh) 2017-02-22

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