EP2564479A1 - Spark gap - Google Patents
Spark gapInfo
- Publication number
- EP2564479A1 EP2564479A1 EP10718554A EP10718554A EP2564479A1 EP 2564479 A1 EP2564479 A1 EP 2564479A1 EP 10718554 A EP10718554 A EP 10718554A EP 10718554 A EP10718554 A EP 10718554A EP 2564479 A1 EP2564479 A1 EP 2564479A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- electrode
- current path
- spark gap
- electrodes
- path limiting
- 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.)
- Granted
Links
- 239000000463 material Substances 0.000 claims description 19
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 5
- 229910002804 graphite Inorganic materials 0.000 claims description 5
- 239000010439 graphite Substances 0.000 claims description 5
- 239000011810 insulating material Substances 0.000 claims description 4
- 235000001674 Agaricus brunnescens Nutrition 0.000 claims description 3
- 238000002242 deionisation method Methods 0.000 abstract description 5
- 230000015572 biosynthetic process Effects 0.000 description 7
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 6
- 229910052782 aluminium Inorganic materials 0.000 description 6
- 239000004020 conductor Substances 0.000 description 6
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 4
- 239000003990 capacitor Substances 0.000 description 4
- 229910052802 copper Inorganic materials 0.000 description 4
- 239000010949 copper Substances 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 3
- 239000007772 electrode material Substances 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 230000003993 interaction Effects 0.000 description 2
- 108090000623 proteins and genes Proteins 0.000 description 2
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008033 biological extinction Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010891 electric arc Methods 0.000 description 1
- 230000003071 parasitic effect Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
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
- H01T4/10—Overvoltage arresters using spark gaps having a single gap or a plurality of gaps in parallel
- H01T4/14—Arcing horns
-
- 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
Definitions
- the invention relates to a spark gap for providing overvoltage protection with an electrode arrangement which has mutually facing electrodes.
- Spark gaps are used in the field of electrical energy transmission and distribution, for example in Serienkompensations ⁇ systems. Such series compensation systems are generally used for reactive power compensation in AC networks and fall under the concept of so-called Flexible AC Transmission Systems (FACTS).
- FACTS Flexible AC Transmission Systems
- a capacitor bank is serially connected in an AC voltage line, wherein protective Ablei ⁇ terbänke are arranged parallel to the capacitor bank.
- the spark gap serves to protect both the capacitor and arrester banks. It can be ignited very quickly in comparison with a mechanical circuit breaker, so that overvoltages on the Abieiter and capacitor banks can be avoided.
- Known spark gaps have at least one electrode arrangement of opposing electrodes whose spacing or distances is set so that the Fun ⁇ kenate below a certain voltage does not strike by itself, so that an active ignition of Fun ⁇ kenate is possible.
- the ignition of the spark gap causes the formation of an arc between the electrodes .
- a circuit breaker arranged parallel to the spark gap is closed and the arc is thus extinguished. It is expedient that the spark gap has a short deionization time, so that this after extinction of the
- Arc quickly reaches its dielectric strength again. If the said dielectric strength has stopped, the parallel circuit breaker can be opened again. The spark gap is then ready for use again.
- the arc initially developed at a point with the ge ⁇ slightest electrode gap. For a short deionization time, it is beneficial that the arc leaves this place of the shortest distance as quickly as possible. It is also known that an arc is drivable by forces of magnetic fields caused by the current flowing through the electrode assembly and the arc. It is also known that a moving conductor loop through which a current flows attempts to enlarge, since the magnetic field generated by the current is denser inside the loop than outside. The current strength determines the strength of the magnetic field and thus the amount of the magnetic force driving the arc. The direction of said magnetic force is determined by the current path.
- electrode assemblies of this type are housed in at least one spark gap housing to protect the electrodes against harmful environmental influences.
- the object of the invention is to provide a spark gap of the type mentioned, in which a formed arc leaves the place of the smallest electrode gap as quickly as possible and thereby increases.
- the invention solves this problem in that the electrodes have at least partially current path limiting means for forcing a desired current path in the electrodes.
- at least some of the electrodes of the spark gap have current path limiting means for limiting or defining a desired current path in the electrodes themselves.
- the invention is based on the idea that a
- a desired current path is achieved when a current flowing over the said current path generates a magnetic field which drives the arc out of the place of its formation in order to enlarge.
- Such a current path which leads over the arc itself, forms, for example, a conductor loop section.
- the current path limiting means limit recesses in the interior of the electrode. Due to the recesses inside the electrode
- the spark current is forced to flow around said recesses.
- the current path limiting means form limiting sections of the recesses in which the current path is formed.
- the boundary sections are designed such that the desired current path is formed in immedi ⁇ direct environment of the arc.
- the current flowing over the current path then generates a magnetic field which drives the arc out of the place of its formation, that is to say from the location of the smallest electrode spacing, whereby the arc increases in size with a short deionization time.
- the current path limiting means comprise a current path limiting pin and / or a current path limiting plate, each of which has an electrical conductivity which differs from that of the remaining material of the respective associated longitudinal electrode.
- the current ⁇ path limiting pin it is possible to limit the current path in the electrode to a certain area or to combine in a region of the longitudinal electrode, the Besag ⁇ te range according to a variant of the current path limiting pin itself, namely if the latter has a higher conductivity as the electrode material in which it extends.
- the current path limiting pin is made of an insulating material, the worst ⁇ ter conducts a current than the surrounding him electrode material. According to this embodiment, the current is forced to flow around the current path limiting pin and settle in the
- the current path limiting plate is expediently of a Ma ⁇ material which has having a lower conductivity than the remaining material of the electrode in which it is arranged.
- each longitudinal electrode has a metalli ⁇ rule base electrode and an electrode cap which is made of a cap material that is less has electrical conductivity as the base material of the electrode cap.
- the electrode cap is made of graphite.
- the electrode cap is mushroom cap-shaped and forms ei ⁇ NEN hemispherical shield portion and a connected to the screen portion stem portion.
- the shield section and the handle section define internal cavities, which can also be referred to as recesses.
- the internal cavities or recesses force the current to propagate in the stem portion or shield portion, thereby forcing a certain convenient current path.
- a current path limiting plate is disposed between the electrode cap and the electrode cap, wherein a current path limiting pin extends through the current path limiting plate in the stem portion, the current path limiting plate and the current path limiting pin are each made of a material having a different conductivity has as the material of the electrode cap and / or the material of the electrode cap.
- the current can therefore be impressed in such a way that an arc is rapidly driven out of the initial electrode space in order to enlarge, whereby For example, sets a shorter Deionisationszeit for Fun ⁇ kenumble.
- the electrode assembly two each other in a longitudinal direction facing longitudinal electrodes and in this respect offset in the transverse direction side electrode to the active ignition of the spark gap, whereby the Strompfadbe- grenzungsw extends in the longitudinal direction and a height ⁇ re conductivity than the material of the Elektrodenkap- pe and Current path limiting plate.
- neither side electrode is provided.
- the spark gap has rather two or more in series maral ⁇ tete electrode arrangements.
- Each electrode arrangement of this series circuit has two longitudinal electrodes each.
- the connected in series circuit with each otherrasilektroden are in operation of the spark gap on a GE ⁇ common medium-voltage potential.
- Each electrode arrangement of this series connection is usually arranged in a separate housing.
- this expediently has the said side electrode, which is arranged offset in the transverse direction with respect to the longitudinal electrodes.
- the longitudinal electrodes expediently have an electrode pin which extends in the longitudinal direction and has a higher conductivity than the material of the electrode cap and the Strompatfbegrenzungs ⁇ plate.
- a side electrode of the initial arc does not arise between the longitudinal electrodes, but burns each between the longitudinal electrodes and the side electrode.
- the side electrode is located on the Funkenbrennsei ⁇ te and thus arranged at the side of the longitudinal electrodes. Due to the higher conductivity of the spark current flows over the Strompfadbegrenzungsw extending in the longitudinal direction and thus in the direction of the opposite longitudinal electrode.
- the Strompffadbegrenzungs protrudes with one end into the hemispherical screen portion and flows from there to the side of the foot of the initial arc, which forms laterally of the longitudinal direction on the longitudinal electrode because of the side electrode.
- the current path limiting plate separates the electrode cap from the electrode cap so that there is no direct contact between the electrode cap and the electrode cap to form a current path. In this way, parasitic current paths are prevented.
- the current exits the longitudinal current path limiting pin it flows laterally through the electrode cap to the base of the arc on the longitudinal electrode.
- the current path spans with respect to the exit point on a win ⁇ kel, which is very different from 180 ° and ⁇ example, between 10 ° and 90 ° varied.
- a conductor loop is formed by the existing of the arc and the cap portion portion of the current path, which tends to diverge due to magnetic forces, with the result that the arc from the initial location, ie the location of the smallest distance of the longitudinal electrode to Sei ⁇ tenelektrode, is driven out. If, in the context of the invention, a series arrangement of electrode arrangements is provided, then a configuration deviating in this respect is used.
- the longitudinally extending electrode pin and the current path limiting plate are made of an electrically nonconductive insulating material, the current path limiting plate separating the electrode cap from the electrode cap only on a part of the surface.
- the separation area is arranged ⁇ at the spark burning side of the respective longitudinal electrode.
- the remaining area represents the education of the Currents available.
- no laterally offset side electrode is vorgese ⁇ hen, so that the arc initially formed between the longitudinal electrodes in the longitudinal direction.
- the electrodes on the electrode arms extending on a common side of the sparking electrode arrangement.
- the electrode arms of the longitudinal electric ⁇ de and optionally the electrode arm of the side electrode are angeord- advantageously in a common plane net.
- Has the electrode array via a side electric ⁇ de this is expediently likewise ⁇ classified in the plane through the electrode arms of longitudinal electrodes on ⁇ tense.
- the electrode arms of the longitudinal electric ⁇ run under magnification of their distance to each other apart at their free end. According to this advantageous manner, the mutual distance of the electrode arms increases towards the free end.
- One from the electrode assembly Arcing driven out by magnetic forces thus migrates to the location of the greatest distance at the free end of the electrode arms with a further shortened deionization time in the wake.
- the supply lines advantageously extend substantially transversely to an arc forming in the electrode arrangement. Due to the common arrangement of the electrical leads on the supply side of the respective electrode assembly and the simultaneous alignment in the said transverse direction, a magnetic field is generated which drives a resulting arc at the electrode assembly from the location of the smallest distance between the electrodes in the electrode arms, which at the the supply side facing away spark ignition side of the electrode assembly are arranged.
- a Reservierelektrode before ⁇ is at least seen is at the same potential as one of the longitudinal electrodes, each Reservierelektrode is arranged with respect to the free ends of the electrode arms, that a burning between the electrode arms arc jumps to the Reservierelektroden.
- the electrode arrangement according to the invention for protection against environmental influences is arranged in at least one housing which is made of
- the housing is, for example, a metallic housing, wherein the housing ⁇ walls are at an electrical potential and for the Arc can also represent an electrode.
- a too far spreading arc could thus reach the housing and this because of its great heat beM ⁇ ended.
- the unkontrol ⁇ profiled formation of an arc is a disadvantage.
- a ⁇ sem Reservierelektrode is at least provided which is suitably on a high voltage potential on which also one of the longitudinal electrodes located.
- FIG. 1 embodiment of an electrode arrangement of a spark gap according to the invention
- FIG. 2 shows another exemplary embodiment of an electrode arrangement of a spark gap according to the invention
- FIG. 3 shows a longitudinal electrode of the spark gap according to FIG
- Figure 2 in a plan view, wherein the Elect ⁇ roden cap has been removed
- Figure 4 shows a further embodiment of a Elect ⁇ clearing arrangement of a radio link according to the invention with a side electrode
- Figure 5 shows another embodiment of a Elekt ⁇ rodenan extract a spark gap according to the invention.
- Show 6 shows a further embodiment of an arrangement of a grub Elect ⁇ Fun kenumble invention.
- each electrode assembly 2 is connected in series with egg ⁇ ner further electrode assembly, which is not shown figuratively. In this case, each electrode assembly 2 is arranged in a separate housing. Two longitudinal electrodes of the series circuit are at operation of the spark gap 1 at an intermediate voltage potential. When ge in Figure 1 ⁇ showed electrode assembly 2, the longitudinal electrode 3 is at a high voltage potential and the longitudinal electrode 4 at the intermediate voltage potential. It is recognizable that each
- Longitudinal electrode 3 and 4 has an electrode base 5 and an electrode cap 6.
- the longitudinal electrodes 3 and 4 are opposite in a longitudinal direction. More specifically, the longitudinal direction extends through the points on the respective longitudinal electrode, which have the least distance from each other.
- Each longitudinal electrode 3, 4 further includes an electrode pin 7 extending in said longitudinal direction as a current path limiting pin made of copper.
- the electrode base 5 is made of aluminum ge ⁇ , wherein the electrode cap 6 consists of graphite. Also can be seen in Figure 1, that electrical supply lines 8 and 9 extend transversely to said longitudinal direction at a common feed line side of the electrode arrangement 2 and are connected to the electrode base 5 of the respective longitudinal ⁇ electrode 3 and the fourth
- each electrode arm 10, 11 is connected to the electrode base 5 of the respectively associated longitudinal electrode 3 and 4 respectively.
- the Zulei ⁇ lines 8, 9 of the electrode base 5 and the electrode arms 10,11 are each made of aluminum and are all in a common plane.
- a burning portion is formed in each case 12 and 13 which be ⁇ is made of a material having a high heat resistance, so that a burning there arc causes minimal damage.
- an initial arc 14 is further illustrated schematically, which arises at the point with the smallest distance between the longitudinal electrodes 3 and 4. Furthermore, a current path 15 is shown, and the direction of current flow is shown by arrows.
- Electrode socket 5 and then flows in the existing copper electrode pin 7 in the longitudinal direction, from there just ⁇ if longitudinally flowing into the arc 14 and then on the electrode pin 7 of the longitudinal electrode 4 like- which drains off. Due to the arrangement of the electrical leads 8 and 9 on the same side of the electrode assembly 2, namely the supply side, and the parallel alignment of the leads 8,9, magnetic fields are generated which the arc 14 from the location of its initial ignition to the free end 12 and 13 of the electrode arms 10 be ⁇ drive 11 drive. For this reason, while the spark gap 1 an arc is quickly driven quickly from its Entste ⁇ tion location in the electrode arms.
- FIG. 2 shows a further embodiment of the OF INVENTION ⁇ to the invention radio link 1 except that any longitudinal electric ⁇ de having 3 or 4 current path limiting means through the electrode pin 7, a partially between electrode base 5 and the electrode cap 6 arranged current ⁇ path limiting plate 24, and an appropriate geometrical configuration of the Electrode caps 6 are formed.
- the electrode caps 6 are each designed mushroom cap-shaped and have an inner elongate pin portion 16 and a screen portion 17 which is formed hemispherical.
- the pin portion 16 and the shield portion 17 begren ⁇ zen inner cavities 18, which may also be referred to as a recess.
- the electrode pin 7 here consists of an electrically non-conductive insulating material.
- the current path limiting plate 24 has a much lower electrical conductivity than the electrode base 5 and electrode cap 6.
- the current path limiting plate 24 is arranged only on the spark burning side between the electrode cap 6 and the electrode base 5 and prevents direct contact of said components only on this side.
- the current path 15 is therefore formed due to the inferior in comparison to the graphite of the shield section 17 electrical conductivity of the electrode pin 7 and the Stromstfabegren ⁇ tion plate 24 on the supply side in the screen section 17 and goes from there into the arc 14 and from there back into the screen section 17 of
- FIG. 3 shows the longitudinal electrode 4 of the spark gap 1 according to FIG. 2 in a plan view, wherein, however, the electrode cap 6 has been removed.
- the current path limiting plate 24 consists of only one circular segment, and therefore does not completely cover the electrode base 5, but only partially and on the spark-burning side, in other words facing the electrode arms 10, 11. is. At the supply side, therefore, a direct contact between the electrode base 5 and the electrode cap 6 is provided.
- the current path limiting plate can be designed Dual-Segment and have come to the supply side, a highly conductive circular segment for the formation of the current path.
- Figure 4 shows a further embodiment of the OF INVENTION ⁇ to the invention spark gap 1, wherein the electrode assembly 2 as the embodiment of Figure 4 again the longitudinal ⁇ electrodes 3 and 4 and a side electrode 20 has.
- the current path limiting means of the electrode drive North ⁇ voltage 2 are connected by the current path limiting plate 24, is realized in the longitudinal direction through the current path limiting plate 24 ⁇ by extending electrode pin 7 and by the mushroom-cap-shaped design of the electrode cap.
- each ⁇ the electrode pin 7 made of copper that is, a in comparison with the aluminum of the electrode base 5, the graphite of the electric ⁇ denkappe 6 and the material of the current path limiting plate 24 more conductive material, so that the current path 15 to ⁇ next in the aluminum of the electrical supply line 8, the aluminum of the electrode cap 5 and the electrode pin 7 of copper in the longitudinal direction forms, then laterally below
- Correspondingly large angle changes in the vicinity of the arc are established at the longitudinal electrode 4. Due to these large changes in angle, approximately one conductor loop is formed in each case, as a result of which the arc is driven into the electrode arms 10, 11 particularly quickly and also at larger electrode spacings.
- FIG. 5 shows a further embodiment of the OF INVENTION ⁇ to the invention spark gap 1, wherein in addition to the electrode assembly 2 is provided a Reservierelektrode 23rd
- the re ⁇ servierelektrode 23 is so arranged with respect to the electrode arms 10 and 11, that accelerated by the inventions ⁇ trained according to magnetic fields accelerated arc in the electrode arms 10, 11 and finally controlled by the Reservierelektrode 23 is collected.
- FIG. genverrise shown at different time points, where the indices with increasing burning time of the arc 14 anstei ⁇ gene.
- the initial arc is again provided with the reference numeral 14. It arises at the location of the smallest distance between the longitudinal electrodes 3 and 4.
- the arc 14 is expelled from the electrode region and migrates, as can be seen from the curves 14 2 , 14 3 , 14 4 and 14 5 , to the free end 12 or 13 of the electrode arms 10 or 11, respectively.
- the arc bulges from the referenced with the reference numeral 14 5 course to the course 14 6 continues and finally burns - as with the course 14 7 verdeut ⁇ light - between the Reservierelektrode 23 and the Elekt ⁇ rodenarm 1 1 of the longitudinal electrode.
- the Reservierelektrode 23 is located on the same potential as the Lssenselekt ⁇ rode third In this case, the current profile changes, since the spark ⁇ current - as indicated in Figure 5 by arrows - now flows over the reservation. Because of the ⁇ adjust the magnetic fields of the electric arc is then from the electrode Reservier- back to the electrode arms 1 0 and 1 1 ge ⁇ designed and has for example the course 14 s. Course 14 g indicates that there is an interplay between reversing electrode 23 and electrode arm 10.
- FIG 6 shows a further embodiment of the OF INVENTION ⁇ to the invention spark gap 1, wherein the electrode arms 1 0, 1 1, however, no longer parallel to each other - as shown in Figure 5 - but their distance from one another to enlarge towards their free ends.
- two reserve electrodes 23 are provided, which are also arranged so with respect to the free ends of the electrode arms 1 0 and 1 1 that the arc 14 is collected.
- arc curves are too illustrates different times, the indices of the reference numeral 14 increase with increasing burning time of the Lichtbo ⁇ gene.
- the Reservierelektroden 23 made ⁇ to have a compact design of the housing and thus of the entire transmission path.
Landscapes
- Arc-Extinguishing Devices That Are Switches (AREA)
- Spark Plugs (AREA)
Abstract
Description
Claims
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/EP2010/055724 WO2011134508A1 (en) | 2010-04-28 | 2010-04-28 | Spark gap |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2564479A1 true EP2564479A1 (en) | 2013-03-06 |
EP2564479B1 EP2564479B1 (en) | 2015-07-29 |
Family
ID=43306546
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP10718554.8A Active EP2564479B1 (en) | 2010-04-28 | 2010-04-28 | Spark gap |
Country Status (6)
Country | Link |
---|---|
US (1) | US9118168B2 (en) |
EP (1) | EP2564479B1 (en) |
KR (1) | KR101427021B1 (en) |
CN (2) | CN102934303B (en) |
RU (1) | RU2548035C2 (en) |
WO (1) | WO2011134508A1 (en) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR101427021B1 (en) * | 2010-04-28 | 2014-08-05 | 지멘스 악티엔게젤샤프트 | Spark gap |
WO2014130552A1 (en) | 2013-02-20 | 2014-08-28 | Emprimus, Llc | Overvoltage protection for power systems |
WO2020069384A1 (en) | 2018-09-28 | 2020-04-02 | Emprimus, Llc | Power grid protection via transformer neutral blocking systems and triggered phase disconnection |
RU191784U1 (en) * | 2019-04-15 | 2019-08-21 | Алексей Васильевич Петров | Spark gap for the contact line support circuit |
IL298453A (en) | 2020-05-22 | 2023-01-01 | Techhold Llc | Overvoltage protection assembly |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3207663A1 (en) * | 1982-03-03 | 1983-09-08 | Siemens AG, 1000 Berlin und 8000 München | SURGE PROTECTOR WITH A GAS-FILLED HOUSING |
DE3233584A1 (en) | 1982-09-10 | 1984-03-15 | G. Rau GmbH & Co, 7530 Pforzheim | ELECTRODE FOR AN ELECTRICAL DISCHARGE LINE AND PRODUCTION METHOD THEREFOR |
US4672259A (en) * | 1985-10-23 | 1987-06-09 | Westinghouse Electric Corp. | Power spark gap assembly for high current conduction with improved sparkover level control |
DE3835921C2 (en) * | 1988-10-18 | 1996-10-02 | Siemens Ag | Surge arrester with air gap |
DE19741658A1 (en) | 1997-09-16 | 1999-03-18 | Siemens Ag | Gas-filled discharge gap e.g. spark gap or surge diverter |
EP1260823B1 (en) * | 2001-05-20 | 2006-04-05 | Ernst Slamecka | Synthetic making/breaking capacity test circuit for high-voltage alternating-current circuit-breakers |
JP2008176950A (en) * | 2007-01-16 | 2008-07-31 | Toshiba Corp | Lightning arrester for power transmission |
KR101427021B1 (en) * | 2010-04-28 | 2014-08-05 | 지멘스 악티엔게젤샤프트 | Spark gap |
-
2010
- 2010-04-28 KR KR1020127028034A patent/KR101427021B1/en active IP Right Grant
- 2010-04-28 RU RU2012150810/07A patent/RU2548035C2/en active
- 2010-04-28 CN CN201080066487.3A patent/CN102934303B/en active Active
- 2010-04-28 EP EP10718554.8A patent/EP2564479B1/en active Active
- 2010-04-28 WO PCT/EP2010/055724 patent/WO2011134508A1/en active Application Filing
- 2010-04-28 US US13/643,882 patent/US9118168B2/en active Active
- 2010-07-05 CN CN2010202519496U patent/CN201887330U/en not_active Expired - Lifetime
Non-Patent Citations (1)
Title |
---|
See references of WO2011134508A1 * |
Also Published As
Publication number | Publication date |
---|---|
EP2564479B1 (en) | 2015-07-29 |
KR20130001732A (en) | 2013-01-04 |
RU2012150810A (en) | 2014-06-10 |
US20130038977A1 (en) | 2013-02-14 |
CN201887330U (en) | 2011-06-29 |
RU2548035C2 (en) | 2015-04-10 |
KR101427021B1 (en) | 2014-08-05 |
CN102934303A (en) | 2013-02-13 |
WO2011134508A1 (en) | 2011-11-03 |
CN102934303B (en) | 2015-11-25 |
US9118168B2 (en) | 2015-08-25 |
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