EP1273019B1 - Filter bag - Google Patents
Filter bag Download PDFInfo
- Publication number
- EP1273019B1 EP1273019B1 EP01913712A EP01913712A EP1273019B1 EP 1273019 B1 EP1273019 B1 EP 1273019B1 EP 01913712 A EP01913712 A EP 01913712A EP 01913712 A EP01913712 A EP 01913712A EP 1273019 B1 EP1273019 B1 EP 1273019B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- filter bag
- gas
- filter
- switching
- fabric
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 239000004744 fabric Substances 0.000 claims description 10
- 239000000463 material Substances 0.000 claims description 9
- 238000000354 decomposition reaction Methods 0.000 claims description 6
- 239000000203 mixture Substances 0.000 claims description 2
- 229920002994 synthetic fiber Polymers 0.000 claims description 2
- 239000007789 gas Substances 0.000 description 26
- 238000005538 encapsulation Methods 0.000 description 6
- 229910018503 SF6 Inorganic materials 0.000 description 4
- 229910052573 porcelain Inorganic materials 0.000 description 4
- SFZCNBIFKDRMGX-UHFFFAOYSA-N sulfur hexafluoride Chemical compound FS(F)(F)(F)(F)F SFZCNBIFKDRMGX-UHFFFAOYSA-N 0.000 description 4
- 229960000909 sulfur hexafluoride Drugs 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000011799 hole material Substances 0.000 description 3
- 230000002349 favourable effect Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000035699 permeability Effects 0.000 description 2
- 229920000271 Kevlar® Polymers 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000004761 kevlar Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000009958 sewing Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000012209 synthetic fiber Substances 0.000 description 1
Images
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
- H01H33/02—Details
- H01H33/53—Cases; Reservoirs, tanks, piping or valves, for arc-extinguishing fluid; Accessories therefor, e.g. safety arrangements, pressure relief devices
- H01H33/57—Recuperation of liquid or gas
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
- H01H9/30—Means for extinguishing or preventing arc between current-carrying parts
- H01H9/34—Stationary parts for restricting or subdividing the arc, e.g. barrier plate
- H01H9/342—Venting arrangements for arc chutes
Definitions
- the invention relates to a filter bag for receiving of filter material which within an encapsulation of a gas-insulated, at a switch-off one Switching gas jet causing electrical switching device Decomposition products from the switching gas binds.
- Such a filter bag is known for example from the published patent application DE 25 57 298 A1.
- the publication is a three-phase encapsulated gas-insulated circuit breaker removable.
- the pressurized gas used is sulfur hexafluoride (SF 6 ).
- SF 6 sulfur hexafluoride
- the decomposition products formed occur as gaseous and solid substances. With an increase in the concentration of the decomposition products there is a risk that the insulating properties of the compressed gas are adversely affected.
- filters are provided within the enclosure.
- the active filter material is introduced in small filter bags in the interior of the enclosure.
- the filter bag receiving devices are provided in the interior, which consist for example of a metallic hole material in order to achieve a good gas permeability.
- the arrangement of the receiving devices for the filter bag within the enclosure results from the requirements of a sufficient dielectric and thermal dimensioning.
- the receiving devices serve in addition to the inclusion of the filter material bag substantially for the protection of the filter bag before occurring during a switching process hot switching gas or plasma streams.
- the deflector effect of the hole material is necessary to avoid burning the filter bag and thus destroying the filter.
- the formation of the hole material must be made so that despite the protection of the filter sufficient flow is possible.
- the arrangement of the filters is essentially always one Compromise between a position with optimal filter behavior and a favorable electrical arrangement of the electric field affecting recording devices.
- the present invention is based on the object, a Filter such form that within compressed gas spaces electrically encapsulated plants a reduction of metallic Recording devices is achieved.
- the object is with a filter bag of the aforementioned Art according to the invention solved in that the filter bag consists of a high temperature resistant fabric and in the switching gas jet is arranged.
- the fabric is a mixture from amorphous, inorganic and highly crystalline organic Synthetic fibers is.
- Such a fabric has a good gas permeability and thus influences the filter effect of the active filter material only small.
- the long-term temperature resistance of several 100 ° C and the contact temperature resistance over 1000 ° C make favorable characteristics for use within a compressed gas insulated switchgear
- the material is resistant to sparks, Flames and glowing fire.
- such fabric has optimal mechanical properties, in particular a high tensile strength in the longitudinal and transverse directions, creating a good Protection of the filter material against mechanical stress during the introduction into the encapsulation and before during the operation occurring mechanical vibrations guaranteed is.
- Such fabrics are, for example, among the Trade names Systaceram or Kevlar known.
- FIG 1 is a section of a high-voltage circuit breaker in open air design shown schematically. It is an end of an interrupter unit in section shown.
- the compressed gas encapsulation has a porcelain body 1, which on its outer surface with a Ribbing is provided.
- the porcelain body 1 forms a Main gas space 10, which receives an interrupter unit 12.
- At the end of the porcelain body 1 is a mounting flange 2 arranged.
- the mounting flange 2 serves to receive a dome-shaped end fitting 3.
- the dome-shaped end fitting 3 has an opening 4 through a Cover 5 is closed.
- At the dome-shaped end fitting 3 is still a connector 6 for connection provided to an electrical system.
- the dome-shaped end fitting 3 has at its the porcelain body 1 facing Side as a deflection 7 for switching gas flows trained intermediate plate on.
- This deflecting element 7 is used mechanical storage and electrical contact one end of the interrupter unit 12, which inside the Pressure gas encapsulation is arranged.
- a cavity 8 has been formed.
- the main gas room 10 is through a plurality of openings 9a, 9b with the cavity 8 gas permeable connected.
- As insulating and extinguishing gas Sulfur hexafluoride is used.
- a plurality of filter material containing filter bag 11 are arranged. These filter bags 11 are through the opening 4 of the dome-shaped end element 3 can be introduced.
- the filter bag 11 consist of a high temperature resistant fabric. To the Sewing the bag, a high temperature resistant thread is used.
- the filter bag 11 are in direct contact with the walls of the deflecting element 7 and the dome-shaped End fitting 3. As can be seen, additional the heat-reflecting recording devices omitted.
- the switching gas jet generated during a switch-off process flows out of an outlet opening of the interrupter unit 12 against the deflector 7 and becomes a large part diverted. Parts of the switching gas flow flow through directly the openings 9a, 9b in the cavity 8 and flow through the Filter bag 11. Within the pressurized gas encapsulation is the Switched gas jet reflected. The reflected switching gas jet amplifies the flow through the cavity 8 and the therein arranged filter bag 11th
- the decomposition products contained in the switching gas are at the direct flow through the filter bag 11 through the filter material bound.
- the formation of the filter bag 11 A high-temperature-resistant fabric allows direct flow the filter bag 11 with the hot switching gas jet. The filtering effect is over the known arrangements improved.
Landscapes
- Filtering Of Dispersed Particles In Gases (AREA)
- Filtering Materials (AREA)
Description
Die Erfindung bezieht sich auf einen Filterbeutel zur Aufnahme von Filtermaterial, welches innerhalb einer Kapselung eines druckgasisolierten, bei einem Ausschaltvorgang einen Schaltgasstrahl hervorrufenden elektrischen Schaltgerätes Zersetzungsprodukte aus dem Schaltgas bindet.The invention relates to a filter bag for receiving of filter material which within an encapsulation of a gas-insulated, at a switch-off one Switching gas jet causing electrical switching device Decomposition products from the switching gas binds.
Ein derartiger Filterbeutel ist beispielsweise aus der Offenlegungsschrift DE 25 57 298 A1 bekannt. Der Offenlegungsschrift ist ein dreiphasig gekapselter druckgasisolierter Leistungsschalter entnehmbar. Als Druckgas wird Schwefelhexafluorid (SF6) eingesetzt. Durch einen bei Schalthandlungen auftretenden Lichtbogen wird das Schwefelhexafluorid zersetzt. Die gebildeten Zersetzungsprodukte treten als gasförmige sowie feste Stoffe auf. Bei einem Anstieg der Konzentration der Zersetzungsprodukte besteht die Gefahr, dass die isolierenden Eigenschaften des Druckgases negativ beeinflusst werden. Um diese Zersetzungsprodukte sowie gegebenenfalls im Schwefelhexafluorid gebundene Feuchtigkeit zu separieren, sind innerhalb der Kapselung Filter vorgesehen. Das aktive Filtermaterial wird in kleinen Filterbeuteln in das Innere der Kapselung eingebracht. Zur Aufnahme der Filterbeutel sind im Innern Aufnahmevorrichtungen vorgesehen, welche beispielsweise aus einem metallischen Lochmaterial bestehen, um eine gute Gasdurchlässigkeit zu erreichen. Die Anordnung der Aufnahmevorrichtungen für die Filterbeutel innerhalb der Kapselung ergibt sich aus den Forderungen einer ausreichenden dielektrischen und thermischen Dimensionierung. Die Aufnahmevorrichtungen dienen neben der Aufnahme der Filtermaterialbeutel im Wesentlichen zum Schutz der Filterbeutel vor während eines Schaltvorganges auftretenden heißen Schaltgas- bzw. Plasmaströmen. Die Deflektorwirkung des Lochmaterials ist notwendig um ein Verbrennen der Filterbeutel und damit eine Zerstörung der Filter zu vermeiden. Die Ausbildung des Lochmaterials muss dabei so erfolgen, dass trotz des Schutzes der Filter eine ausreichende Durchströmung möglich ist.Such a filter bag is known for example from the published patent application DE 25 57 298 A1. The publication is a three-phase encapsulated gas-insulated circuit breaker removable. The pressurized gas used is sulfur hexafluoride (SF 6 ). By an occurring during switching operations arc the sulfur hexafluoride is decomposed. The decomposition products formed occur as gaseous and solid substances. With an increase in the concentration of the decomposition products there is a risk that the insulating properties of the compressed gas are adversely affected. In order to separate these decomposition products and any moisture bound in the sulfur hexafluoride, filters are provided within the enclosure. The active filter material is introduced in small filter bags in the interior of the enclosure. To accommodate the filter bag receiving devices are provided in the interior, which consist for example of a metallic hole material in order to achieve a good gas permeability. The arrangement of the receiving devices for the filter bag within the enclosure results from the requirements of a sufficient dielectric and thermal dimensioning. The receiving devices serve in addition to the inclusion of the filter material bag substantially for the protection of the filter bag before occurring during a switching process hot switching gas or plasma streams. The deflector effect of the hole material is necessary to avoid burning the filter bag and thus destroying the filter. The formation of the hole material must be made so that despite the protection of the filter sufficient flow is possible.
Die Anordnung der Filter stellt im Wesentlichen immer einen Kompromiss zwischen einer Position mit optimalem Filterverhalten und einer günstigen elektrischen Anordnung der das elektrische Feld beeinflussenden Aufnahmevorrichtungen dar.The arrangement of the filters is essentially always one Compromise between a position with optimal filter behavior and a favorable electrical arrangement of the electric field affecting recording devices.
Der vorliegenden Erfindung liegt die Aufgabe zugrunde, einen Filter derartig auszubilden, dass innerhalb von Druckgasräumen elektrisch gekapselter Anlagen eine Reduzierung von metallischen Aufnahmevorrichtungen erreicht wird.The present invention is based on the object, a Filter such form that within compressed gas spaces electrically encapsulated plants a reduction of metallic Recording devices is achieved.
Die Aufgabe wird bei einem Filterbeutel der eingangs genannten Art erfindungsgemäß dadurch gelöst, dass der Filterbeutel aus einem hochtemperaturfesten Gewebe besteht und im Schaltgasstrahl angeordnet ist.The object is with a filter bag of the aforementioned Art according to the invention solved in that the filter bag consists of a high temperature resistant fabric and in the switching gas jet is arranged.
Werden die Filterbeutel aus einem hochtemperaturfestem Gewebe hergestellt, so ist es möglich, auf Bleche, welche die Filterbeutel vor den heißen Schaltgasen schützen, zu verzichten. Mit dem Verzicht auf diese Bleche können dieselben das dielektrische Feld innerhalb der Kapselung nicht mehr beeinflussen. Die Anordnung der Filterbeutel innerhalb der Kapselung kann nunmehr wesentlich flexibler gestaltet werden. Des Weiteren ist ein beachtlicher Kostenvorteil zu verzeichnen, da die aufwendigen Aufnahmevorrichtungen einfacher gestaltet bzw. andere Baugruppen derartig ausbildbar sind, dass die Aufnahmevorrichtungen völlig entfallen. Are the filter bags made of a high temperature resistant fabric made, so it is possible on sheets containing the filter bag protect against the hot switching gases, to dispense. With the abandonment of these sheets, the same can the dielectric No longer affect the field within the enclosure. The arrangement of the filter bags within the enclosure can now be made much more flexible. Furthermore There is a considerable cost advantage since the elaborate recording devices designed easier or other modules are formed such that the Recording devices completely eliminated.
Des Weiteren kann vorgesehen sein, dass das Gewebe eine Mischung aus amorphen, anorganischen und hochkristallinen organischen Synthesefasern ist.Furthermore, it can be provided that the fabric is a mixture from amorphous, inorganic and highly crystalline organic Synthetic fibers is.
Ein derartiges Gewebe verfügt über eine gute Gasdurchlässigkeit und beeinflusst damit die Filterwirkung des aktiven Filtermaterials nur gering. Insbesondere die Dauertemperaturbeständigkeit von mehreren 100°C sowie die Kontakttemperaturbeständigkeit von über 1000°C stellen günstige Eigenschaften für den Einsatz innerhalb einer druckgasisolierten Schaltanlage dar. Des Weiteren ist das Material beständig gegen Funken, Flammen und Glimmbrand. Neben den ausgezeichneten thermischen Eigenschaften verfügt ein derartiges Gewebe über optimale mechanische Eigenschaften insbesondere eine hohe Reißfestigkeit in Längs- und Querrichtung, wodurch ein guter Schutz des Filtermaterials vor mechanischer Beanspruchung während des Einbringens in die Kapselung sowie vor während des Betriebes auftretenden mechanischen Schwingungen gewährleistet ist. Derartige Gewebe sind beispielsweise unter den Handelsnamen Systaceram oder Kevlar bekannt.Such a fabric has a good gas permeability and thus influences the filter effect of the active filter material only small. In particular, the long-term temperature resistance of several 100 ° C and the contact temperature resistance over 1000 ° C make favorable characteristics for use within a compressed gas insulated switchgear Furthermore, the material is resistant to sparks, Flames and glowing fire. In addition to the excellent thermal Properties such fabric has optimal mechanical properties, in particular a high tensile strength in the longitudinal and transverse directions, creating a good Protection of the filter material against mechanical stress during the introduction into the encapsulation and before during the operation occurring mechanical vibrations guaranteed is. Such fabrics are, for example, among the Trade names Systaceram or Kevlar known.
Im Folgenden wird die Erfindung anhand einer Zeichnung gezeigt
und nachfolgend näher beschrieben.
Dabei zeigt die
Figur 1- eine schematische Anordnung der Filterbeutel in einer Druckgaskapselung.
It shows the
- FIG. 1
- a schematic arrangement of the filter bag in a pressurized gas encapsulation.
In der Figur 1 ist ein Ausschnitt eines Hochspannungs-Leistungsschalters
in Freiluftausführung schematisch dargestellt.
Es ist ein Ende einer Unterbrechereinheit im Schnitt
dargestellt. Die Druckgaskapselung weist einen Porzellankörper
1 auf, welcher an seiner äußeren Oberfläche mit einer
Verrippung versehen ist. Der Porzellankörper 1 bildet einen
Hauptgasraum 10, welcher eine Unterbrechereinheit 12 aufnimmt.
Am Ende des Porzellankörpers 1 ist ein Montageflansch
2 angeordnet. Der Montageflansch 2 dient der Aufnahme einer
kuppelförmigen Abschlussarmatur 3. Die kuppelförmige Abschlussarmatur
3 weist eine Öffnung 4 auf, die durch einen
Deckel 5 verschließbar ist. An der kuppelförmigen Abschlussarmatur
3 ist weiterhin eine Anschlussstück 6 zur Anbindung
an eine elektrische Anlage vorgesehen. Die kuppelförmige Abschlussarmatur
3 weist an ihrer dem Porzellankörper 1 zugewandten
Seite eine als Umlenkelement 7 für Schaltgasströme
ausgebildete Zwischenplatte auf. Dieses Umlenkelement 7 dient
der mechanischen Lagerung und der elektrischen Kontaktierung
eines Endes der Unterbrechereinheit 12, welche im Innern der
Druckgaskapselung angeordnet ist. Durch die kuppelförmige
Ausbildung der Abschlussarmatur 3 und die Ausbildung des Umlenkelements
7 ist ein Hohlraum 8 gebildet worden. Der Hauptgasraum
10 ist durch mehrere Öffnungen 9a, 9b mit dem Hohlraum
8 gasdurchlässig verbunden. Als Isolier- und Löschgas
wird Schwefelhexafluorid eingesetzt. Innerhalb des Hohlraumes
8 sind mehrere Filtermaterial enthaltende Filterbeutel 11 angeordnet.
Diese Filterbeutel 11 sind durch die Öffnung 4 des
kuppelförmigen Abschlusselementes 3 einbringbar. Die Filterbeutel
11 bestehen aus einem hochtemperaturfesten Gewebe. Zum
Vernähen der Beutel wird ein hochtemperaturfester Faden eingesetzt.In the figure 1 is a section of a high-voltage circuit breaker
in open air design shown schematically.
It is an end of an interrupter unit in section
shown. The compressed gas encapsulation has a
Die Filterbeutel 11 liegen dabei im unmittelbaren Kontakt mit
den Wandungen des Umlenkelementes 7 und der kuppelförmigen
Abschlussarmatur 3. Wie zu erkennen ist, wurde auf zusätzliche,
die Hitze reflektierenden Aufnahmevorrichtungen verzichtet. The
Der bei einem Ausschaltvorgang entstehende Schaltgasstrahl
strömt aus einer Austrittsöffnung der Unterbrechereinheit 12
gegen die Umlenkeinrichtung 7 und wird zu einem großen Teil
umgeleitet. Teile des Schaltgasstromes strömen direkt durch
die Öffnungen 9a, 9b in den Hohlraum 8 und durchströmen die
Filterbeutel 11. Innerhalb der Druckgaskapselung wird der
Schaltgasstrahl reflektiert. Der reflektierte Schaltgasstrahl
verstärkt die Durchströmung des Hohlraumes 8 und der darin
angeordneten Filterbeutel 11.The switching gas jet generated during a switch-off process
flows out of an outlet opening of the
Die im Schaltgas enthaltenen Zersetzungsprodukte werden bei
der direkten Durchströmung der Filterbeutel 11 durch das Filtermaterial
gebunden. Die Ausbildung der Filterbeutel 11 aus
einem hochtemperaturfestem Gewebe ermöglicht die direkte Beströmung
der Filterbeutel 11 mit dem heißen Schaltgasstrahl.
Die Filterwirkung ist gegenüber den bekannten Anordnungen
verbessert.The decomposition products contained in the switching gas are at
the direct flow through the
Claims (2)
- Filter bag (11) for the reception of filter material which, within a casing of a compressed-gas-insulated electric switch unit generating a switch gas jet during a switching-off operation, binds decomposition products from the switch gas, characterized in that the filter bag (11) consists of a high-temperature-resistant fabric and is arranged in the switch gas jet.
- Filter bag according to Claim 1, characterized in that the fabric is a mixture of amorphous, inorganic and high-crystalline organic synthetic fibres.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10014678 | 2000-03-17 | ||
| DE10014678A DE10014678C2 (en) | 2000-03-17 | 2000-03-17 | filter bag |
| PCT/DE2001/000716 WO2001069624A1 (en) | 2000-03-17 | 2001-02-20 | Filter bag |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1273019A1 EP1273019A1 (en) | 2003-01-08 |
| EP1273019B1 true EP1273019B1 (en) | 2005-06-29 |
Family
ID=7636203
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP01913712A Expired - Lifetime EP1273019B1 (en) | 2000-03-17 | 2001-02-20 | Filter bag |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US6743272B2 (en) |
| EP (1) | EP1273019B1 (en) |
| DE (2) | DE10014678C2 (en) |
| WO (1) | WO2001069624A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102016200453A1 (en) | 2016-01-15 | 2017-07-20 | Siemens Aktiengesellschaft | Electrical insulation arrangement and method for maintenance of an electrical insulation arrangement |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7323024B2 (en) * | 2003-12-10 | 2008-01-29 | Babcock & Wilcox Technical Services Y-12, Llc | Vessel with filter and method of use |
| DE102009015539A1 (en) * | 2009-04-01 | 2010-10-07 | Siemens Aktiengesellschaft | Kapselungsgehäusereduzierstück |
| US20140366733A1 (en) * | 2013-06-18 | 2014-12-18 | Bha Altair, Llc | Filter media and method of forming the same |
| DE102016214220A1 (en) * | 2016-08-02 | 2018-02-08 | Siemens Aktiengesellschaft | Filter material cartridge for a sealed circuit breaker |
| DE102017201305A1 (en) | 2017-01-27 | 2018-08-02 | Siemens Aktiengesellschaft | Fluid-insulated electric power transmission device |
| CN111729419B (en) * | 2020-08-10 | 2020-12-29 | 诸城市人民医院 | Waste gas emission treatment equipment |
Family Cites Families (24)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2214925A (en) * | 1937-08-26 | 1940-09-17 | Peoples Gas By Products Corp | Adsorptive body and method of making the same |
| US2425250A (en) * | 1945-01-31 | 1947-08-05 | Weston Electrical Instr Corp | Encased electrical device |
| US2578324A (en) * | 1945-09-07 | 1951-12-11 | Shellmar Products Corp | Desiccant pouch |
| US3057138A (en) * | 1957-10-01 | 1962-10-09 | Engelhard Ind Inc | Apparatus for the separation of metals from fluids containing same |
| US3535852A (en) * | 1967-11-09 | 1970-10-27 | Hydromation Eng Co | High temperature dust collector |
| DE2557298A1 (en) * | 1975-12-19 | 1977-06-30 | Bbc Brown Boveri & Cie | COMPRESSED GAS INSULATED CIRCUIT BREAKER |
| US4070519A (en) * | 1976-04-27 | 1978-01-24 | Huyck Corporation | High temperature filter fabrics |
| US4270935A (en) * | 1977-06-27 | 1981-06-02 | United States Filter Corporation | Filter assembly for high temperature glass fiber filter media |
| US4243715A (en) * | 1979-04-27 | 1981-01-06 | Aerodyne Development Corporation | Metallized amorphous silica fabric for high temperature use |
| CH659914A5 (en) * | 1983-02-24 | 1987-02-27 | Sprecher & Schuh Ag | HIGH VOLTAGE SWITCH WITH SWITCH-ON RESISTANCE. |
| US4830643A (en) * | 1988-07-13 | 1989-05-16 | W. L. Gore & Associates, Inc. | Expanded polytetrafluoroethylene tubular container |
| US5258164A (en) * | 1991-04-05 | 1993-11-02 | Minnesota Mining And Manufacturing Company | Electrically regenerable diesel particulate trap |
| US5174969A (en) * | 1991-04-05 | 1992-12-29 | Minnesota Mining And Manufacturing Company | Roll-pack diesel particulate filter |
| US5171339A (en) * | 1991-11-07 | 1992-12-15 | E. I. Du Pont De Nemours And Company | Filter bag for hot gases |
| US5229200A (en) * | 1991-12-18 | 1993-07-20 | W. L. Gore & Associates, Inc. | Static dissipative nonwoven textile material |
| JPH08508316A (en) * | 1993-03-16 | 1996-09-03 | ダブリュ．エル．ゴア アンド アソシエイツ，インコーポレイティド | Composite fiber of mixed glass fiber and polytetrafluoroethylene and method for producing the same |
| US5460637A (en) * | 1994-03-31 | 1995-10-24 | Du Pont Lanxide Composites L.P. | Ceramic hot gas filter |
| FR2729088B1 (en) * | 1995-01-05 | 1997-03-28 | Genevet Sa | FILTER HANDLES FOR SLEEVE FILTERS |
| US5928414A (en) * | 1996-07-11 | 1999-07-27 | W. L. Gore & Associates, Inc. | Cleanable filter media and filter elements |
| US5945360A (en) * | 1997-03-28 | 1999-08-31 | Johns Manville International, Inc. | Biosoluble pot and marble-derived fiberglass |
| US5902363A (en) * | 1997-07-18 | 1999-05-11 | Alliedsignal Composites Inc. | Ceramic hot-gas filter |
| WO2000007696A1 (en) * | 1998-08-05 | 2000-02-17 | Toray Industries, Inc. | Chemical filter unit and gas purification system |
| FI107129B (en) * | 1998-10-01 | 2001-06-15 | Bki Holding Corp | Process for producing multilayer filter material and multilayer filter material |
| US6428612B1 (en) * | 2001-04-19 | 2002-08-06 | Hughes Electronics Corporation | Hydrogen getter package assembly |
-
2000
- 2000-03-17 DE DE10014678A patent/DE10014678C2/en not_active Expired - Fee Related
-
2001
- 2001-02-20 EP EP01913712A patent/EP1273019B1/en not_active Expired - Lifetime
- 2001-02-20 US US10/221,799 patent/US6743272B2/en not_active Expired - Fee Related
- 2001-02-20 WO PCT/DE2001/000716 patent/WO2001069624A1/en active IP Right Grant
- 2001-02-20 DE DE50106634T patent/DE50106634D1/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102016200453A1 (en) | 2016-01-15 | 2017-07-20 | Siemens Aktiengesellschaft | Electrical insulation arrangement and method for maintenance of an electrical insulation arrangement |
| WO2017121665A1 (en) | 2016-01-15 | 2017-07-20 | Siemens Aktiengesellschaft | Electrical insulation arrangement and method for maintaining an electrical insulation arrangement |
Also Published As
| Publication number | Publication date |
|---|---|
| US6743272B2 (en) | 2004-06-01 |
| US20030172631A1 (en) | 2003-09-18 |
| DE10014678C2 (en) | 2002-02-07 |
| EP1273019A1 (en) | 2003-01-08 |
| WO2001069624A1 (en) | 2001-09-20 |
| DE10014678A1 (en) | 2001-09-27 |
| DE50106634D1 (en) | 2005-08-04 |
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