EP3146551A1 - Electric switching device for medium- and/or high-voltage uses - Google Patents
Electric switching device for medium- and/or high-voltage usesInfo
- Publication number
- EP3146551A1 EP3146551A1 EP15733457.4A EP15733457A EP3146551A1 EP 3146551 A1 EP3146551 A1 EP 3146551A1 EP 15733457 A EP15733457 A EP 15733457A EP 3146551 A1 EP3146551 A1 EP 3146551A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- switching device
- coating
- filler
- conductor elements
- housing
- 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
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- 239000011248 coating agent Substances 0.000 claims abstract description 47
- 239000000945 filler Substances 0.000 claims abstract description 37
- 239000012212 insulator Substances 0.000 claims abstract description 36
- 239000004020 conductor Substances 0.000 claims abstract description 34
- 239000011159 matrix material Substances 0.000 claims abstract description 6
- 230000005684 electric field Effects 0.000 claims description 25
- 239000000463 material Substances 0.000 claims description 16
- XOLBLPGZBRYERU-UHFFFAOYSA-N tin dioxide Chemical compound O=[Sn]=O XOLBLPGZBRYERU-UHFFFAOYSA-N 0.000 claims description 16
- 229910001887 tin oxide Inorganic materials 0.000 claims description 15
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 claims description 14
- 229910010271 silicon carbide Inorganic materials 0.000 claims description 13
- 239000002245 particle Substances 0.000 claims description 12
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 claims description 6
- 239000010445 mica Substances 0.000 claims description 5
- 229910052618 mica group Inorganic materials 0.000 claims description 5
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 4
- 239000012876 carrier material Substances 0.000 claims description 4
- 239000011521 glass Substances 0.000 claims description 4
- 239000002923 metal particle Substances 0.000 claims description 3
- 230000008859 change Effects 0.000 claims description 2
- 229920001971 elastomer Polymers 0.000 claims description 2
- 239000000806 elastomer Substances 0.000 claims description 2
- 229920001169 thermoplastic Polymers 0.000 claims description 2
- 229920001187 thermosetting polymer Polymers 0.000 claims description 2
- 239000004416 thermosoftening plastic Substances 0.000 claims description 2
- 229910052751 metal Inorganic materials 0.000 description 20
- 239000002184 metal Substances 0.000 description 20
- 238000009826 distribution Methods 0.000 description 7
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- 230000008569 process Effects 0.000 description 5
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 230000015556 catabolic process Effects 0.000 description 3
- 239000000306 component Substances 0.000 description 3
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- 238000009825 accumulation Methods 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 229910052787 antimony Inorganic materials 0.000 description 2
- WATWJIUSRGPENY-UHFFFAOYSA-N antimony atom Chemical compound [Sb] WATWJIUSRGPENY-UHFFFAOYSA-N 0.000 description 2
- 235000013339 cereals Nutrition 0.000 description 2
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- 230000001052 transient effect Effects 0.000 description 2
- 239000011787 zinc oxide Substances 0.000 description 2
- 238000012935 Averaging Methods 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- JYGLAHSAISAEAL-UHFFFAOYSA-N Diphenadione Chemical compound O=C1C2=CC=CC=C2C(=O)C1C(=O)C(C=1C=CC=CC=1)C1=CC=CC=C1 JYGLAHSAISAEAL-UHFFFAOYSA-N 0.000 description 1
- 101100033674 Mus musculus Ren2 gene Proteins 0.000 description 1
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- 238000007598 dipping method Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
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- 235000013312 flour Nutrition 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
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- 239000011256 inorganic filler Substances 0.000 description 1
- 229910003475 inorganic filler Inorganic materials 0.000 description 1
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- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- BULVZWIRKLYCBC-UHFFFAOYSA-N phorate Chemical compound CCOP(=S)(OCC)SCSCC BULVZWIRKLYCBC-UHFFFAOYSA-N 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
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- 239000004065 semiconductor Substances 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 229910000679 solder Inorganic materials 0.000 description 1
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
- H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
- H01H33/66—Vacuum switches
- H01H33/662—Housings or protective screens
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
- H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
- H01H33/66—Vacuum switches
- H01H33/662—Housings or protective screens
- H01H33/66207—Specific housing details, e.g. sealing, soldering or brazing
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
- H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
- H01H33/66—Vacuum switches
- H01H33/662—Housings or protective screens
- H01H33/66207—Specific housing details, e.g. sealing, soldering or brazing
- H01H2033/6623—Details relating to the encasing or the outside layers of the vacuum switch housings
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
- H01H33/02—Details
- H01H33/24—Means for preventing discharge to non-current-carrying parts, e.g. using corona ring
Definitions
- the invention relates to an electrical switching device, in particular for medium and / or high voltage applications, comprising at least two contactable conductor elements which can be spaced apart via a movement device and a housing defining a switching chamber made of an insulator which at least partially surrounds the conductor elements.
- VFB vacuum circuit breakers
- Switching applications for example in the range of 1 kV to 52 kV, as well as a relevant part in low-voltage systems. Their use in high-voltage transmission systems, for example at voltages greater than 52 kV, is also increasing. While a VCB most of the time is closed, thus providing for contact with the conductor elements, its main ⁇ neuter task is to interrupt currents in alternating ⁇ current systems under nominal conditions, ie in particular for switching on and off of current ratings, or preferably to Un - Breaking currents in fault conditions, in particular to interrupt short circuits and protect the systems. Other applications include the pure switching of load currents using contacting conductor elements, which is mostly used in low and medium voltage systems.
- the vacuum interruptor (VI, also vacuum interrupter) is the core element of a VCB.
- a vacuum interrupter usually has a pair of contacts which are formed by respective conductor elements, at least one of which can be moved by means of a movement device in order to bring about the open and closed states of the switching device can.
- a conductor element is moved axially relative to the other fixed conductor element.
- the contacts can be made on electrically conductive, in particular made of metal bolts, which provide both current and heat conduction as well as the mechanical see means to hold the contacts and / or move.
- a VI further comprises a vacuum-tight housing and the movement device he ment ⁇ mentioned and may also comprise a metal bellows, which is connected on one side with the housing, on the other side with the moving conductor element, in particular the moving bolt.
- the housing is substantially formed by an insulating member, that is, a Isola ⁇ gate, for example, a ceramic tube, which is connected via connecting elements to the conductor elements, for example, metal caps, or the like ge ⁇ uses are necessary to form the switching chamber, the insulator complete in the axial direction.
- a permanent high vacuum is less than 10 -8 Pa, which can be assured, for example, for periods of operation of GR iquess 30 years by appropriate design of the Ge ⁇ reheatuses and the cap.
- the vacuum is necessary to assure the "make-break" operations and to ensure the isolation characteristics of the switching device in the open state.
- the switching device When the switching device is in an open state, on the one hand the nominal voltage of the system has to be isolated, on the other hand, however, high-amplitude surge voltages must also be isolated. For example, by a lightning strike in the system can be ⁇ triggers.
- the switching device transitions from the closed to the open state, thus spacing the contacts of the conductor elements, it is necessary to interrupt rated currents or short-circuit currents which result in the appearance of transient voltage spikes across the VI, which are significantly higher than the nominal AC voltages of the system.
- High voltages in vacuum systems typically generate free electrons through field emission processes when the elekt ⁇ generic field strength is sufficiently high.
- the acceleration of the electrons in the high electric fields increases the kinetic energy of these electrons, for example, up to energies that exceed tens or even hundreds of KeV.
- the insulator usually made of ceramics, must be able to withstand high voltages across its surface, even when X-ray and free electrons are present or, in some cases, even when the insulator is contaminated by dust particles , which are electrostatically attached to the outer surface of the insulator.
- the addition of screen ⁇ elements with respect to the metal vapors leads to distortions of withstand the electrical fields at the insulator, which consequently can lead to overloading of the insulator caused by building up there charges to strong fields at certain points and.
- the problems set out here also apply to other switching devices in addition to the vacuum interrupter mentioned by way of example.
- the invention is therefore based on the object to provide a switching ⁇ device with a housing comprising an insulator, which despite simple feasibility reduces distortions of the electric field in the region of the switching device due to surface charges.
- an electrical switching device of the type mentioned which is characterized in that the housing at least on one side, preferably on the outside, a resistive coating of a filled with a filler matrix material, wherein the sheet resistance of Coating between 10 8 and 10 12 ⁇ at operating field strength and the coating is lei ⁇ tend connected to the conductor elements, in particular by the housing at the end closing, the conductor elements holding, conductive caps.
- the property spectrum of the coating is preferably further improved by virtue of the fact that the non-linear exponent describing the slope in the current-voltage characteristic of the coating is smaller than 6.
- the presented here alternate ⁇ te invention is based on a special coating which is preferably applied externally to the insulator and can be applied before or during the manufacturing process of the housing, for example as a Lasierrind the group consisting of Ke ⁇ Ramik housing, or at the end of the manufacturing ⁇ processes by a dipping treatment, spraying or other suitable application processes, so that a well-defined coating is formed. This is preferably formed as homogeneous as possible, which means that as few unwanted
- Fluctuations of the surface resistance along the housing on ⁇ occur.
- combinations of materials have already become known whose properties can be adjusted so that a certain sheet resistance of the coating is set. After this can happen, for example, via the concentration of the filler, expedient embodiments are conceivable in which the concentration of the filler is adjusted in such a way that a region is reached in which the surface area is reached. Resistance no longer significantly depends on the concentration of the filler, so that a coating is formed, which is very easy to reproduce.
- the resistance / conductivity ⁇ the ness of the coating influencing variables in addition to their thickness, the doping amount, the concentration of the filler, the
- the coating is a total, albeit at high resistance conductive principle, but what to leads that targeted a fault current is applied to the switching device in order to optimize the electric field distribution operating conditions at Be ⁇ .
- the conductive coating of the present invention tends to dissipate surface charges that would otherwise accumulate on the insulator and result in distortion of the electric field.
- a clever choice of properties, as already indicated, produces an extremely stable, corrosion-resistant and reproducible conductive layer with a desired surface resistance.
- the coating of the invention allows homogenization ⁇ tion of the field distribution on the surface of the insulator.
- the coating is ohmic as much as possible, that is, has the lowest possible dependence on the applied voltage (and thus the applied electric field).
- I KU a gives, where I is the current, U the voltage, K a geomet ⁇ riepene constant and the nonlinearity exponent.
- Known coating material combinations use materials whose varistor properties are significantly more prominent, for example fillers with zinc oxide, ZnO.
- This class of materials has tiken highlighted Druck characteris-, that shows a strong nonlinear behavior above a certain threshold ⁇ half of the electric field. Within the scope of the application of the present invention, this would lead to a drastic disruption of the field distribution as soon as only a portion of the coating exceeds this threshold value, which itself can even lead to a malfunction of the switching device.
- Joule heating within the conductive coating would be too high.
- the soft characteristics of the composition of matter as claimed by the present invention serve to gradually reduce the surface charges that would otherwise accumulate and / or lead to electron avalanches near the surface, thus resulting in the coating of the present invention a strong distortion of the electric field distribution is avoided. Electrons released by X-rays, charge accumulation or electron avalanches are thus rapidly removed from the surface of the insulator, so that field distortions are largely avoided. Consequently, the electric field strength on the surface of the Wegvorrich ⁇ device, thus the housing, extremely homogeneous, which in turn results in a reduction in size, in particular the length, and sons ⁇ tiger geometric requirements of the switching device.
- the switching device can be implemented inexpensively.
- material compositions are used which are not only easy to process but can also be adjusted to specific desired sheet resistance values by simple modifications.
- the filler is tin oxide Sn02 ⁇ or silicon carbide SiC is or comprises. If the conductivity properties of these substances are to be adjusted by doping, a preferred embodiment of the invention provides that the filler is antimony-doped tin oxide and / or doped with aluminum
- Silicon carbide is or comprises. It can, for example a doping of 0 to 15 mol% antimony (Sb) in tin oxide (Sn0 2 ) may be provided.
- this loading vorzugten material combinations particularly for operating field strengths in the area of the insulator from 100 to 1200 V / mm prop ⁇ nen.
- the matrix material may be selected from the group comprising elastomers, thermosets, thermoplastics and glass. Accordingly, the various coating methods for producing the coating can be selected.
- the matrix material can therefore be formed organically, for example as a polymer, or inorganically, for example as glass, in which the filler is introduced. It is expedient ⁇ SSIG if the filler concentration 10 to 90 wt .-%, in particular 40 to 60 wt .-%, is.
- the preferred range of 40 to 60 wt .-% corresponds to when using tin oxide on mica platelets ("platelets") a volume fraction of about 20 to 30 vol .-%.
- the thickness of the coating has an effect here since ⁇ up, how high the surface conductivity of the coating;
- thicker coatings tend in certain Materi- alkombinationen to more stable sheet resistance own sheep ⁇ th.
- coating thicknesses of 100 to 500 ym ym have expedient erwie ⁇ sen.
- the filler may consist of particles having a particle size of 100 nm to 300 ym, preferably 1 ym to 50 ym.
- a support material is not necessarily required, but it may also be useful, particularly when a tin oxide Snue 2 umfas ⁇ sender filler is used when the particles are platelets of a Carrier material, in particular mica, are, which with the resistance properties defining notessma- terial, in particular tin oxide SnÜ 2 or silicon carbide SiC, are coated, preferably with a layer thickness in the range from 10 to 100 nm. It is therefore possible to use mica platelets which are coated with a layer of semiconducting material, in particular tin oxide, are coated. An alternative to using such platelets is quartz flour.
- the aspect ratio also plays a role in the properties of the coating.
- an aspect ratio less than or equal to five can be set for width to height.
- a further possibility for adapting theinstitunwider- Stands, specifically to increase the conductivity, is a surface treatment of the particles, for example, it may be provided that the particles are coated to the outside of an electrically conductive layer, in particular titanium oxide Ti0 2 .
- an electrically conductive layer in particular titanium oxide Ti0 2 .
- a conductive Be ⁇ coating preferably with titanium oxide, be advantageous to produce the desired conductivity properties and thus surface resistances.
- a preferred embodiment of the invention provides that the sheet resistance along the Warre ⁇ ckungsplatz the conductor elements is varied in particular as a function of a change in the electric field under operating conditions along the extension direction of the conductor elements.
- Such a variation in resistance along the extending direction can be achieved by varying the thickness of the coating and / or by use of different fillers and / or by varying the concentration of a single filler, for which suitable herstel ⁇ averaging techniques in the prior art are already known.
- a certain course of sheet resistance can be realized, whether by changing the thickness of the coating, by using different fillers with different conductivities whose respective concentration changes along the length of the switching device, or by varying the Concentration of the single filler over the length of the switching device.
- the switching device may in particular be designed as a vacuum interrupter.
- the vacuum interrupter in the contacting region of Porterele ⁇ ments a the electric field on the insulator influencing, arranged within the switching chamber and / or held between two housing parts of the housing shielding element for Interception of free metal particles of the conductor elements often occurs through the screen element (which can also be referred to as a vapor ⁇ screen) also a field distortion, which can be significantly homogenized or compensated by the use of the coating in the present invention and their effects, For example, charge accumulation can be avoided.
- FIG. 1 shows a switching device according to the invention according to a first exemplary embodiment
- FIG. 2 shows a possible course of the sheet resistance ent ⁇ long the direction of extension of the conductor elements
- Fig. 3 shows a switching device according to the invention according to a second embodiment.
- Fig. 1 shows in the form of a schematic diagram of a first exporting ⁇ approximately example of a switching device 1 according to the invention, here is a vacuum interrupter.
- A here of two tubular ceramic parts, ie insulators 2, composite housing 3 is completed by metal caps 4 and defines a ne switching chamber 5, in which two, for example, as a bolt ⁇ formed conductor elements 6 are guided with contacts 7.
- the lower one of the conductor elements 6 in FIG. 1 is movable according to the arrow 8 and the indicated movement device 9.
- a metal shield member 12 (steam shield) is presently provided in the contact in the switching chamber. 5
- this shield element 12 now also provides for a distortion of the electric field, so that in a region 13 behind the shield elements a lower electric field would be present during operation than in the regions 14, where, for example, charges can accumulate and thus provide further field distortions that could jeopardize the operability of the switching device 1.
- the outside of the insulator 2 (and therefore of the housing 3 in the region of the insulator 2) is provided with a resistive coating 15 covering the entire outer surface of the insulator 2 and the caps 4 on both sides of the switching device 1 contacted, for example by a solder joint or the like. Consequently, by the
- a conductive Ver ⁇ bond between the conductor elements 6 is given so that although a small fault current arises, but due to the high resistance of the coating 15, in this case in the range of 10 1 0 ⁇ , is not essential, However, contributes to the field alignment and the removal of surface charges. Too high fields are unproblematic for these properties, since which is significantly less than 6, the slope in the current-voltage characteristic of the coating 15 Be ⁇ descriptive nonlinearity exponent, the present is in the range of 4 to 4.5. Even with transient voltage peaks, breakdowns are avoided.
- the coating 15 consists of a material composition which initially comprises a carrier material, in the present case glass, in which a filler is provided.
- the filler is contained at 50% by weight.
- the filler is tin oxide, SnÜ 2 , deposited as resistive material on mica flakes having an aspect ratio width to height less than 5 and having sizes in the range of 1 to 50 ym.
- the thickness of the layer of resistive material on the wafer is between 10 and 100 nm, the total thickness of the coating 15 here being 250 ym.
- Embodiments are conceivable in which the counter ⁇ stood material is still doped tin oxide in the here described examples play (SnC> 2), antimony (Sb), wherein the Dotie ⁇ tion realized here with 0 to 15 mol .-% can.
- Another embodiment provides that titanium oxide, T1O 2 , is additionally applied to the platelets if the conductivity is to be increased.
- the sheet resistance can be homogeneous over the entire Beschich ⁇ tion 15 and thus constant.
- Fig. 2 the sheet resistance R ?? against the position 1 in the direction of extent 10 and the areas 13 and 14 shows.
- the curve 16 of the surface resistance in region 13 shows an increase.
- Such can be achieved by varying the thickness of the coating 15, by using two different fillers of different conductivity and varying their concentrations along the direction of extent 10 or by using a single filler and varying its concentration in the direction of extent 10.
- Fig. 3 shows a second, slightly modified execution ⁇ example of a switching device 1 according to the invention Wiedemann around a vacuum interrupter.
- a switching device 1 Wiedemann around a vacuum interrupter.
- functionally identical components are provided with the same reference numerals.
- the housing 3 in turn consists of two Isolato- ren 2, that is tubular ceramic members which are spaced apart but in this case, since the shield element between them a entspre ⁇ accordingly having larger radius 12 is held in the Kontak- t ists Symposium. 13
- the coating 15 extends in each case along the outside of the insulators 2 and is conductively connected not only to the caps 4, but correspondingly of course also to the (metal) shielding element 12.
- silicon carbide can also be used as an alternative for tin oxide, in which case where doping is to be provided there as well, aluminum (Al) is preferred as doping material.
Landscapes
- Contacts (AREA)
- Thermistors And Varistors (AREA)
- Laminated Bodies (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102014213944.9A DE102014213944A1 (en) | 2014-07-17 | 2014-07-17 | Electrical switching device for medium and / or high voltage applications |
PCT/EP2015/065064 WO2016008729A1 (en) | 2014-07-17 | 2015-07-02 | Electric switching device for medium- and/or high-voltage uses |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3146551A1 true EP3146551A1 (en) | 2017-03-29 |
EP3146551B1 EP3146551B1 (en) | 2020-06-24 |
Family
ID=53499012
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP15733457.4A Active EP3146551B1 (en) | 2014-07-17 | 2015-07-02 | Electrical switching apparatus for medium and high voltage |
Country Status (6)
Country | Link |
---|---|
US (1) | US10102989B2 (en) |
EP (1) | EP3146551B1 (en) |
CN (1) | CN106537545B (en) |
DE (1) | DE102014213944A1 (en) |
ES (1) | ES2819508T3 (en) |
WO (1) | WO2016008729A1 (en) |
Families Citing this family (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102014213944A1 (en) | 2014-07-17 | 2016-01-21 | Siemens Aktiengesellschaft | Electrical switching device for medium and / or high voltage applications |
DE102015213738A1 (en) | 2015-07-21 | 2017-01-26 | Siemens Aktiengesellschaft | Energy-technical component, in particular vacuum interrupter |
DE102016217625A1 (en) * | 2016-03-30 | 2017-10-05 | Siemens Aktiengesellschaft | High voltage component and device with a high voltage component |
KR102545133B1 (en) | 2016-04-05 | 2023-06-19 | 엘에스일렉트릭(주) | Vacuum interubter for a circuit breaker |
AT518664B1 (en) | 2016-04-22 | 2017-12-15 | Trench Austria Gmbh | HVDC air choke coil and method of manufacture |
DE102017221783A1 (en) * | 2017-12-04 | 2019-06-06 | Siemens Aktiengesellschaft | Arrangement and method for switching high voltages with a switching device and exactly one resistance stack |
KR102523707B1 (en) * | 2018-05-16 | 2023-04-19 | 엘에스일렉트릭(주) | Pole part assembly for the circuit breaker |
CN110070968B (en) * | 2019-03-20 | 2021-11-23 | 天津大学 | Preparation method of direct current flashover resistant nonlinear conductive coating insulator |
DE102019211345A1 (en) | 2019-07-30 | 2021-02-04 | Siemens Energy Global GmbH & Co. KG | Interrupter unit with a vacuum tube and an insulating housing |
CN115349158A (en) * | 2020-04-13 | 2022-11-15 | 三菱电机株式会社 | Heat dissipation structure, manufacturing method thereof and vacuum valve |
WO2022030086A1 (en) * | 2020-08-05 | 2022-02-10 | 三菱電機株式会社 | Vacuum valve |
US11688578B2 (en) * | 2020-11-11 | 2023-06-27 | Moxtek, Inc. | Interruption-ring in an X-ray tube |
EP4016576A1 (en) | 2020-12-15 | 2022-06-22 | Siemens Aktiengesellschaft | Electrical switching device for medium and / or high voltage applications |
DE102021201781A1 (en) | 2021-02-25 | 2022-08-25 | Siemens Aktiengesellschaft | Electrical switching device for medium and/or high voltage applications |
DE102021207963A1 (en) * | 2021-07-23 | 2023-01-26 | Siemens Energy Global GmbH & Co. KG | Vacuum interrupter for switching voltages |
US11862419B2 (en) * | 2021-11-15 | 2024-01-02 | Eaton Intelligent Power Limited | Toroidal encapsulation for high voltage vacuum interrupters |
DE102022207491A1 (en) * | 2022-07-21 | 2024-02-01 | Siemens Energy Global GmbH & Co. KG | Vacuum interrupter for switching voltages and method for collecting particles in the vacuum interrupter |
JP7542785B1 (en) | 2024-03-27 | 2024-08-30 | 三菱電機株式会社 | Electric field relaxation structure, vacuum valve, method of manufacturing electric field relaxation structure and method of manufacturing vacuum valve |
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US3590184A (en) * | 1968-12-09 | 1971-06-29 | Allis Chalmers Mfg Co | High-voltage outdoor vaccum switch with conductive coating serving as electrostatic shield means and end cap-mounting means |
US4002867A (en) * | 1972-11-01 | 1977-01-11 | Westinghouse Electric Corporation | Vacuum-type circuit interrupters with condensing shield at a fixed potential relative to the contacts |
DE3840825A1 (en) * | 1988-12-03 | 1990-06-07 | Calor Emag Elektrizitaets Ag | Contact arrangement for vacuum switches |
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DE19839285C1 (en) | 1998-08-28 | 2000-04-27 | Siemens Ag | Glow protection tape |
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JP2001286045A (en) * | 2000-03-30 | 2001-10-12 | Toshiba Corp | Electric apparatus |
DE10029763B4 (en) * | 2000-06-16 | 2009-01-15 | Siemens Ag | Vacuum interrupter |
FR2821479B1 (en) | 2001-02-28 | 2003-04-11 | Alstom | INSULATING MATERIAL FOR OVER-MOLDING ON MEDIUM AND HIGH VOLTAGE APPARATUSES, AND MEDIUM AND HIGH VOLTAGE ELECTRICAL APPARATUS USING SUCH MATERIAL |
JP2004519836A (en) * | 2001-05-30 | 2004-07-02 | アーベーベー・パテント・ゲーエムベーハー | Controller for at least one vacuum breaker gap |
JP4291013B2 (en) | 2003-03-04 | 2009-07-08 | 株式会社日本Aeパワーシステムズ | Vacuum valve |
US20040242034A1 (en) * | 2003-05-30 | 2004-12-02 | Hubbell Incorporated | Electrical assembly and dielectric material |
JP4403782B2 (en) * | 2003-11-17 | 2010-01-27 | 株式会社日立製作所 | Vacuum switchgear |
MY155804A (en) * | 2008-08-18 | 2015-11-30 | Semblant Ltd | Halo-hydrocarbon polymer coating |
DE102010052889A1 (en) | 2010-12-01 | 2012-06-06 | Merck Patent Gmbh | Semiconductive dielectric coatings and articles |
FR2971884B1 (en) | 2011-02-17 | 2014-01-17 | Alstom Grid Sas | ELECTRIC CURRENT CUT-OFF CHAMBER FOR A HIGH OR MEDIUM VOLTAGE CIRCUIT BREAKER AND CIRCUIT BREAKER COMPRISING SUCH A CHAMBER |
DE102014213944A1 (en) | 2014-07-17 | 2016-01-21 | Siemens Aktiengesellschaft | Electrical switching device for medium and / or high voltage applications |
-
2014
- 2014-07-17 DE DE102014213944.9A patent/DE102014213944A1/en not_active Withdrawn
-
2015
- 2015-07-02 US US15/326,692 patent/US10102989B2/en active Active
- 2015-07-02 EP EP15733457.4A patent/EP3146551B1/en active Active
- 2015-07-02 WO PCT/EP2015/065064 patent/WO2016008729A1/en active Application Filing
- 2015-07-02 CN CN201580038912.0A patent/CN106537545B/en active Active
- 2015-07-02 ES ES15733457T patent/ES2819508T3/en active Active
Also Published As
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WO2016008729A1 (en) | 2016-01-21 |
US10102989B2 (en) | 2018-10-16 |
CN106537545A (en) | 2017-03-22 |
US20170213675A1 (en) | 2017-07-27 |
ES2819508T3 (en) | 2021-04-16 |
EP3146551B1 (en) | 2020-06-24 |
CN106537545B (en) | 2019-08-16 |
DE102014213944A1 (en) | 2016-01-21 |
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