EP3659223A1 - Anordnung mit einer gasisolierten schaltanlage - Google Patents
Anordnung mit einer gasisolierten schaltanlageInfo
- Publication number
- EP3659223A1 EP3659223A1 EP18785515.0A EP18785515A EP3659223A1 EP 3659223 A1 EP3659223 A1 EP 3659223A1 EP 18785515 A EP18785515 A EP 18785515A EP 3659223 A1 EP3659223 A1 EP 3659223A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- arrangement according
- gas
- arrester
- surge arrester
- insulated switchgear
- 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.)
- Withdrawn
Links
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B5/00—Non-enclosed substations; Substations with enclosed and non-enclosed equipment
- H02B5/06—Non-enclosed substations; Substations with enclosed and non-enclosed equipment gas-insulated
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01C—RESISTORS
- H01C7/00—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material
- H01C7/10—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material voltage responsive, i.e. varistors
- H01C7/12—Overvoltage protection resistors; Arresters
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B13/00—Arrangement of switchgear in which switches are enclosed in, or structurally associated with, a casing, e.g. cubicle
- H02B13/02—Arrangement of switchgear in which switches are enclosed in, or structurally associated with, a casing, e.g. cubicle with metal casing
- H02B13/035—Gas-insulated switchgear
- H02B13/055—Features relating to the gas
-
- 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
- H01H33/53—Cases; Reservoirs, tanks, piping or valves, for arc-extinguishing fluid; Accessories therefor, e.g. safety arrangements, pressure relief devices
- H01H33/56—Gas reservoirs
- H01H2033/566—Avoiding the use of SF6
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B13/00—Arrangement of switchgear in which switches are enclosed in, or structurally associated with, a casing, e.g. cubicle
- H02B13/02—Arrangement of switchgear in which switches are enclosed in, or structurally associated with, a casing, e.g. cubicle with metal casing
- H02B13/035—Gas-insulated switchgear
- H02B13/0354—Gas-insulated switchgear comprising a vacuum switch
Definitions
- the invention relates to an arrangement with a gas-insulated switchgear according to the preamble of claim 1.
- Arrester comprises a plurality of disc-shaped Me ⁇ talloxid varistors, which are stacked and pressed together by means of tension rods between the end fittings.
- the surge arrester is designed for use on a gas-insulated switchgear (GIS) and, like the switchgear for the use of sulfur hexafluoride (SF6), is designed as an electrically insulating insulating gas.
- GIS gas-insulated switchgear
- SF6 sulfur hexafluoride
- the use of a luftba- terraced insulating therefore has the that the GIS is to ⁇ world gently and inexpensive to manufacture and maintenance advantage as no special safety and disposal records must be kept for air-based insulating gases due to their healthy ⁇ comprehensive and climatic safety.
- the electrical insulating properties of air-based Isolierga ⁇ sen lower as the insulating ability of SF6 must Devices with air-based insulating gases provide greater internal shock ⁇ wide and protective distances and are therefore much larger in their design than comparable SF6 devices. Therefore, the GIS described in the brochure is significantly RESIZE ⁇ SSSR than a comparable SF6 model.
- the described GIS type 8VN1 is designed for 145 kV.
- the object is to provide an arrangement with a gas-insulated switchgear which is comparatively to ⁇ world friendly, inexpensive to produce and at the same space-saving.
- the invention solves this problem by an arrangement according to claim 1.
- the dimensions of electrical systems are essentially determined by the withstand voltage with regard to lightning and switching overvoltages.
- This makes use of the invention since by use of the surge arrester, the withstand voltage strength of the electrical ⁇ rule system is increased so that the dimensions can be reduced.
- the second electrical insulating fluid at least partially sulfur hexafluoride. This is an advantage because sulfur hexafluoride has long been tried and has a particularly high dielectric strength.
- the first electrical insulating fluid is an air-based insulating gas.
- air-based electrical insulating gases are environmentally friendly, they have the disadvantage that they are less electrically insulating than the environmentally harmful gas sulfur hexafluoride (SF6).
- SF6 sulfur hexafluoride
- Anla ⁇ gen with air-based insulating gases must have greater internal separation distances than systems with SF6 as a cover gas. This leads to significantly enlarged plant dimensions, which entails additional costs for material and transport. Outside the space for an installation, in particular in existing electrical installa tions ⁇ severely limited.
- Especially retrofits of, for example, gas-insulated switchgear with air-based insulating gases are therefore due to the Larger space requirements difficult or even impossible.
- An isolation distance according to the invention is, for example, the distance of an electrically isolatable part of the switching device in the GIS to a housing wall.
- a configuration of GIS using SF6 as insulating gas is carried out, for example, such that a 145 kV designed for a voltage to be switched clamping ⁇ GIS having a withstand voltage strength of 650 kV.
- the GIS is designed for an isolation distance of 400 mm.
- the withstand voltage of 650 kV the
- a surge arrester for an SF6-isolated GIS would be designed for a protection level of 450 kV.
- the switchgear is in the aforementioned product brochure for the "clean-air" given 8VN1 that 5500 mm are provided at the operating voltage of 145 kV dimensions of 1000 x 3200 x.
- the isolation distance is entspre ⁇ accordingly slightly less than half of the smallest dimensional -.
- the invention can be reduced by using a Studentsnapssabieiters this system, for example, to 800 mm in the smallest dimension direction, although clean air and not SF6 is used as insulating.
- the surge arrester has a pressure compensation device with a gas deflecting device, wherein the gas deflecting device is designed for deflecting escaping gas from the gas-insulated switchgear.
- Pressure compensation device allows in the event of an error outflow of the gas from the interior of the trap housing to the outside and is formed for example as a membrane which tears when a pressure threshold value is exceeded.
- the gas deflector in at Druckaus ⁇ comparison device arranged and directs the effluent gas into a predefined direction, so no persons or equipment are damaged by the escaping gas.
- the gas deflecting device may be designed, for example, as a so-called "blow-out chute", a component that bulges like an ear
- Ausbiaschute is chosen so that outflowing gas flows away from the GIS.
- a Druckaus ⁇ comparison device is supplied with a gas deflector and a Ausbiaschute also provided in the GIS, so these gas deflector Rich ⁇ tung is aligned such that escaping gas does not hit the surge arrester.
- a safety device is provided between the surge arrester and the gas-insulated switchgear.
- the safety device forms a mechanical barrier which, in the event of a fault, shields both components - GIS and Abieiter - from one another, so that damage to the respective other component is prevented.
- the safety device can be used as an elec- Risch non-conductive partition be formed, the Mate ⁇ rial at least partially a glass fiber reinforced plastic (GRP) has. This is an advantage because GRP is non-conductive, cost effective and easy to process.
- the air-based insulating gas for the gasiso ⁇ lated switchgear substantially 80% nitrogen and 20% oxygen and the gas-insulated switchgear is in their isolation distances for the air-based insulating gas ⁇ out.
- This composition is advantageous because it corresponds We ⁇ sentlichen the composition of conventional air. This allows air to be available anywhere, if necessary
- Air is known as "clean-air" by Siemens AG as an air-based insulating gas.
- the switchgear on a vacuum switching ⁇ device on. So far in the high voltage range due to high insulation strengths of the equipment used with SF6 as insulating and the low spread of the vacuum switching principle only for transformers
- the inventive arrangement of the surge arrester is designed for three-phase high voltage, the Studentswoodsab ⁇ ieiter a fluid-tight housing having oxidwiderstandsettin for receiving an electrically insulating insulating and three arrester with metal.
- the insulating gas is air-based. This is an advantage because it also makes the surge arrester particularly environmentally friendly.
- the air-based insulating gas for the surge arrester has essentially 80% nitrogen and 20% oxygen, and the surge arrester is designed in its insulation spacings for the air-based insulating gas. This results in receive the same benefits as the beginning of the use of this gas mixture for the GIS is provided ⁇ .
- the overvoltage arrester results in an enlargement of the surge arrester due to the poorer insulation properties of the air-based insulating gas in comparison with SF6, because greater insulation distances must be maintained.
- the metal-oxide resistance elements have a diameter of at least 90 mm.
- the metal oxide resistance elements are usually formed as discs with a diameter of about 60 mm.
- metal-oxide resistance elements are to be used as disks with a diameter of at least 90 mm.
- ⁇ vorzugt are diameter of 95 to 120 mm. This is a pre ⁇ part, because with otherwise the same energy input the Ablei- tertikpegel and thus the dielectricicsfestig- Both the arrester housing and the connected GIS can be lowered.
- Resistors with larger diam ⁇ ser have relatively lower specific leakage current and an improved temperature behavior, ie a politician- ren increase in electrical conductivity when heated. Consequently, this variant has the advantage that the trap must not be increased even when using air-based insulating gases instead of SF6, which saves space and cost a ⁇ .
- the diameter is determined transversely to a longitudinal axis by a discharge column. In other words, this embodiment allows to implement a particularly low protection level of the Abieiters.
- the arrester columns are connected in a Neptun configuration.
- a ladder-earth surge protection with surge arresters is known.
- this has the disadvantage of a high level of protection for conductor-conductor insulation (two conductor-earth arresters in series). Reduced conductor-to-conductor protection levels have been replaced by additional
- the individual partial arresters can be adapted according to the invention, For example, as explained above by resistors with greater energy absorption capacity and / or by Mehrklaltechnik.
- the combination of a Neptun circuit in a high voltage resistor with increased resistive elements allows a surge arrester to be implemented despite the use of an environmentally friendly air-based insulating gas without significantly increasing the space requirements for the Abieiter.
- three arrester columns extend in a first longitudinal section of the surge arrester and a fourth arrester column runs in a second longitudinal section of the surge arrester, the three arrester columns being electrically conductively connected to one another and to the fourth arrester column.
- the virtual neutral point is formed, for example, by a field-optimal plate. The plate lies on the one hand between the partial Abieitern, which lie between the high voltage terminal and virtu ⁇ ellem star point, and on the other hand between the
- Partial conductor which is located between the virtual star point and earth.
- the three arrester columns run parallel to one another. You can do that For example, be arranged in a triangular shape in a plan view, ie each column is on a corner of the triangle.
- the three arrester columns run in such a way that the distance between them in the direction of the contact means becomes smaller. That is, in ⁇ example, that each column is aligned on an imaginary Kant ei ⁇ nes pyramid stump, wherein the pyramid has the base of an isosceles triangle.
- the arrester housing can be designed to be particularly narrow in a central region, which saves space.
- the three arrester columns extending in the first longitudinal portion such that they are arranged at least at one end of the first longitudinal section with one of its ends on ei ⁇ ner imaginary line.
- the fourth arrester column runs as a continuation of one of the first three arrester columns in the second longitudinal section.
- the fourth arrester is disposed in the second longitudinal portion such that it extends centrally and axially parallel to a center axis ⁇ point to the first three columns.
- the first and the second Lijnsab ⁇ section substantially the same length formed.
- the contact means is arranged between the first and the second longitudinal section.
- the contact means is formed substantially as a metal plate.
- the contact means on webs the star-shaped from a center axis in the longitudinal direction of the surge arrester in the transverse direction outward duri ⁇ fen.
- the gas-insulated switchgear and the surge arrester are arranged in a common fluid-tight housing.
- the gas-insulated switchgear Minim ⁇ least one input field, and the surge arrester is connected upstream of the input field.
- the gas-insulated switchgear Minim ⁇ least an output field on, and the surge arrester is connected downstream of the output field.
- the gas-insulated switchgear has a plurality of busbars, and the surge arrester is assigned to a busbar.
- the busbars can be connected via a coupling field, and the surge arrester is spatially arranged on the coupling field.
- the invention also sets itself the task of specifying an arrangement with an electrical system, which is relatively inexpensive and at the same time space-saving.
- the withstand voltage of other electrical installations can be increased by means of the surge arrester, so that they can be dimensioned smaller.
- this embodiment of the invention can be easily combined with the above-described embodiments of the arrangement with a gas-insulated switchgear, which is operated with a luftba ⁇ - oriented insulating, to produce new advantageous embodiments.
- an arrangement with an electrical system and a surge arrester is provided to lower the protection level of the system such that the system has in comparison to a system without the use of egg ⁇ nes smaller surge arrester insulation distances on ⁇ .
- the electrical installation has at least one of the following equipment: voltage transformer, power switch, transformer.
- the Anlagengrö ⁇ SSE can follow another alternative embodiment of the approach of the invention can be reduced by means of the surge arrester at a re-use of SF6 as insulating gas. Accordingly, an arrangement with egg ⁇ ner gas-insulated switchgear, the filling with
- Sulfur hexafluoride is formed, and provided with a surge voltage ⁇ conductor to lower the level of protection of the gas-insulated switchgear so that the switchgear has Ver ⁇ equal to a gas-insulated switchgear without the use of a surge arrester smaller insulation distances.
- this embodiment of the invention can be easily combined with the above-described embodiments of the arrangement with a gas-insulated switchgear, which is operated with an air-based insulating, to produce new advantageous embodiments.
- Figure 1 shows an embodiment of an inventive arrangement
- Figure 2 shows an embodiment of a
- Figure 3 shows an embodiment of a circuit diagram of a
- FIG. 1 shows an arrangement 20 with a gas-insulated switchgear 21, which is designed to be filled with an air-based electrical insulating gas 23. It is an over ⁇ voltage conductor 22 is provided to ensure the protection level of the gas- Herten switchgear 21 so lower that the switchgear 21 in comparison to a iso ⁇ lated with sulfur hexalloyed switchgear has 27 at most equal insulation spacings.
- the surge arrester 22 is arranged in the immediate vicinity of the switchgear 21 and is connected via electrical connectors 24,25 ⁇ specific thereto.
- FIG. 2 shows a surge arrester according to the invention for a three-phase high voltage application, the fluid-tight housing is not shown for receiving an air-based insulating elekt ⁇ driven.
- Four arrester columns 6,7,8,9 are connected in a Neptunung.
- Arrester columns 6, 7, 8, 9 have metal oxide resistance elements 10, which have a diameter 12 of at least 90 mm.
- the diameter 12 is determined transversely to a longitudinal axis 13 by the Abieiter.
- High voltage side is a first housing cover 1 and the earth voltage side is a second
- Housing cover 2 is provided.
- Each Ableit yarn is respectively connected ⁇ means of Verspannstäben 11 pressed together between two end fittings (end fittings not shown).
- Three arrester 6,7,8 are high-voltage side in each case arranged with equal spacing zueinan ⁇ of, so that a triangular basic shape in cross section results in a first longitudinal portion.
- the first longitudinal portion 3 ends with a contact means 5, which connects the three arrester 6,7,8 underei ⁇ Nander and with the fourth arrester 9 electrically conductive.
- a fourth arrester column 9 is arranged such that it runs on a center point axis or longitudinal axis 13 centrally and axially parallel to the first three columns 6, 7, 8.
- the contact means 5 is substantially formed as a metal plate and arranged between the first and the second longitudinal portion.
- FIG. 3 shows an exemplary embodiment of a circuit diagram of a GIS with surge arresters.
- a circuit diagram with a field division of a typical GIS can be found on page 16 of the product brochure "Gas-insulated switchgear series 8DN8 up to 170 kV, 63 kA, 4000 A" from Siemens AG, 2012, Order No. E50001-G620-A122-V1- 4A00 is known. in the inventive embodiment of this circuit diagram has been extended to Students Hopkinssab ⁇ ieiter 34,35,37,38,39,40.
- the gas-insulated switchgear 31 has a length of 15130 mm in a total of 14 input and output fields 41-54 on.
- the fields 41-54 are connected to two bus bars 32, 33 and can be connected via a coupling field 36. It is intended to protect individual or all input fields of the GIS with surge arresters so that external overvoltages do not damage the GIS Due to the risk of lightning overvoltages, it is necessary to connect Abieiter in front of the overhead power line, depending on the layout of the system it may be necessary for cable entrances to use Abieiter here as well.
- surge arrester Even with some or all output fields, it makes sense to use surge arrester, because it, for example, control overvoltages, which can occur especially in vacuum switching technology, are mastered. Thus, damage to the GIS downstream equipment is avoided.
Landscapes
- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Gas-Insulated Switchgears (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102017217240.1A DE102017217240A1 (de) | 2017-09-27 | 2017-09-27 | Anordnung mit einer gasisolierten Schaltanlage |
| PCT/EP2018/075551 WO2019063421A1 (de) | 2017-09-27 | 2018-09-21 | Anordnung mit einer gasisolierten schaltanlage |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP3659223A1 true EP3659223A1 (de) | 2020-06-03 |
Family
ID=63833960
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP18785515.0A Withdrawn EP3659223A1 (de) | 2017-09-27 | 2018-09-21 | Anordnung mit einer gasisolierten schaltanlage |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US20200280178A1 (de) |
| EP (1) | EP3659223A1 (de) |
| CN (1) | CN111133645A (de) |
| DE (1) | DE102017217240A1 (de) |
| WO (1) | WO2019063421A1 (de) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102016215598A1 (de) * | 2016-08-19 | 2018-02-22 | Siemens Aktiengesellschaft | Elektroenergieübertragungseinrichtung sowie Lebenszyklusmanagement |
| WO2022085145A1 (ja) * | 2020-10-22 | 2022-04-28 | 三菱電機株式会社 | バルブ型ガスフィルタおよびガス絶縁開閉装置 |
| EP4224650B1 (de) * | 2022-02-02 | 2025-12-17 | Hitachi Energy Ltd | Anpassungsmodul für eine gasisolierte schaltanlage |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5587115U (de) * | 1978-12-08 | 1980-06-16 | ||
| JPS63190307A (ja) * | 1987-02-03 | 1988-08-05 | 株式会社東芝 | 避雷器 |
| JPH11299020A (ja) * | 1998-04-10 | 1999-10-29 | Hitachi Ltd | ガス絶縁変電所もしくは開閉所 |
| JP4237591B2 (ja) * | 2003-09-17 | 2009-03-11 | 株式会社日立製作所 | ガス絶縁開閉装置 |
| JPWO2011117914A1 (ja) * | 2010-03-24 | 2013-07-04 | 株式会社日立製作所 | 真空バルブ及び該真空バルブを搭載したスイッチギヤ |
-
2017
- 2017-09-27 DE DE102017217240.1A patent/DE102017217240A1/de not_active Ceased
-
2018
- 2018-09-21 WO PCT/EP2018/075551 patent/WO2019063421A1/de not_active Ceased
- 2018-09-21 EP EP18785515.0A patent/EP3659223A1/de not_active Withdrawn
- 2018-09-21 US US16/647,910 patent/US20200280178A1/en not_active Abandoned
- 2018-09-21 CN CN201880062161.XA patent/CN111133645A/zh active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| CN111133645A (zh) | 2020-05-08 |
| DE102017217240A1 (de) | 2019-03-28 |
| US20200280178A1 (en) | 2020-09-03 |
| WO2019063421A1 (de) | 2019-04-04 |
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