EP1952407B1 - Mica-reinforced insulation - Google Patents
Mica-reinforced insulation Download PDFInfo
- Publication number
- EP1952407B1 EP1952407B1 EP06793986A EP06793986A EP1952407B1 EP 1952407 B1 EP1952407 B1 EP 1952407B1 EP 06793986 A EP06793986 A EP 06793986A EP 06793986 A EP06793986 A EP 06793986A EP 1952407 B1 EP1952407 B1 EP 1952407B1
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- European Patent Office
- Prior art keywords
- mica
- sleeve
- electrical
- insulation
- mount
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B3/00—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties
- H01B3/02—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of inorganic substances
- H01B3/08—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of inorganic substances quartz; glass; glass wool; slag wool; vitreous enamels
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/13—Hollow or container type article [e.g., tube, vase, etc.]
Definitions
- the invention relates to a mica-reinforced insulating tube for the isolation of electrical contact connections.
- Electrical contact connections of electrical equipment e.g. between coils of electrical machines or transformers, in particular at rated voltages of more than 1 kV, it is possible to sufficiently insulate them against each other and against ground potential. This is followed, in particular for electrical equipment in the nominal voltage range from 1 KV insulation of the contact connections by manual wrapping with mica tapes.
- the manual wrapping can also be done only after the final shaping of the contact connections.
- a mica-containing tube which has a plurality of layers, wherein the inner layer consists of mica-containing strips and is followed by a resin coating which is surrounded by a heat-shrinkable tube.
- the object of the invention to provide for contact connections in particular for electrical equipment with rated voltages above 1 KV insulation, which are easy to manufacture and have low wall thicknesses. Furthermore, the insulation should be flexible, so that corresponding contact connections can also be isolated with sufficient electrical strength.
- a mica reinforced insulating for the isolation of electrical contact connections with a carrier tube having a single or multi-layer surrounding him mica tape, wherein the carrier tube is made of fabric, wherein the fabric is braided or knitted or lace and wherein the Fabric is constructed of glass or synthetic fibers.
- a mica reinforced insulating for the isolation of electrical contact connection with a carrier tube having a single or multi-layer surrounding him mica tape, said the carrier tube is a closed one-piece tube having a jacket made of PU, acrylate or silicone.
- This inventive mica reinforced insulation is characterized by a layered structure, which is characterized according to the invention by a carrier tube and mica materials located thereon.
- a carrier tube By means of single or multilayer layers of a mica bandage with adjustable overlapping, the electrical strength or the partial discharge resistance can be adapted to the respective voltage requirements. These are both the rated voltage stresses as well as the expected overvoltage effects in inverter operation of electrical machines or due to overvoltages due to network anomalies, e.g. Lightning strike or traveling wave effects on electrical wires and cables.
- the layered construction can be carried out, for example, by braiding a fabric tube, which is braided, knitted or laceed, with a coating of mica tape. Furthermore, also continuous so one-piece hoses with a coating of PU, acrylate or silicone with a mica tape are spun around to obtain a mica reinforced insulating tube for the isolation of electrical contact connections.
- Mica is an inorganic insulating material and has comparatively very good electrical insulation and thermal properties. In addition, a very good creepage and dielectric strength.
- the electricity constant ⁇ r is between 5 and 8.
- a mica tape has small pieces of mica, which are glued with a binder and pressed under heat. The density of mica pieces directly affects the electrical insulation properties.
- this porous mica tape on an accelerator, which thereby favors the curing of the impregnating resin in the carrier tube.
- mica reinforced insulating hose is provided with a mechanical protection of a fiber braid, which may be a glass or plastic fiber.
- the inventive mica-reinforced insulating tube is produced in a preferred embodiment by the following steps: by compressed air and / or by a mandrel of the carrier tube is brought to the desired inner diameter, and wound in this state with a mica tape.
- these two or three operations, producing the carrier tube with subsequent rewinding of the mica tape and possibly applying a mechanical protective tube or protective braid can be performed by a device or a work process.
- the mica content increases the electrical strength and the partial discharge resistance of the insulation even with a small wall thickness than unreinforced lacquered or extruded insulating hoses.
- the mechanical strength and flexibility over conventional rolled mica tape rolls or tubes is e.g. significantly increased by the tissue reinforcement of the carrier tube. This also prevents a shift of the layers of mica tape, especially in the assembly of other parts, so that the electrical resistance of the electrical equipment can be guaranteed.
- contacts in the rated voltage range above 1 kV can also be made resistant to partial discharges in a simple manner.
- these hoses which are now formed, are pushed over the respective location to be insulated in the case of the respective electrical equipment, such as electrical machines, converters, or transformers, without having to fear that the existing layers of the insulation will change in their position.
- the insulation is thus applied before the final shaping of the contact connection and withstands the mechanical stresses in this shaping.
- the figure shows a portion of an insulation tube 1 according to the invention, the base of which forms a braided glass tube, which is designed as a carrier tube 2.
- This braided glass tube 2 is surrounded by a jacket 3 of, for example, LSR (L iquid- S ilicon- R ubber).
- This jacket 3 is constructed, for example, of liquid silicone rubber.
- This arrangement is now surrounded by a mica tape 4, which results in a mica layer defined layer thickness by a predetermined number of layers and / or a predetermined overlap of the individual layers.
- the respective mica tapes 4 advantageously have a respectively defined layer thickness and / or layer width.
- a PET ( P oly- E thylen- T errespalat) -fibre 5 is suitable.
- interlaced knitted or bobbin carrier tube 2 made of glass or synthetic fibers, e.g. brought by compressed air to the desired inner diameter.
- the carrier hose 2 can also be applied to a correspondingly sized mandrel.
- the support tube 2 is provided with a jacket 3 made of PU, acrylate or silicone before the next method step.
- the mica tape 4 is porous and advantageously contains an accelerator, to thereby promote the curing of a impregnating resin in the carrier tube 2.
- the amount of mica of the carrier hose 2 is varied in sections and thus adjusted in a predeterminable manner.
- the mica tape-braided carrier hose 2 is advantageously provided with a fiber braid 5 made of glass or plastic fibers.
- the mica content increases the electrical strength and the partial charge resistance of the insulating tube 1 with respect to painted or extruded relatively small wall thickness.
- the inventive mica reinforced insulating tube 1 has at least one of a mica tape 4 braided carrier hose 2.
- a sheath 3 and / or a fiber braid 5 are provided.
Abstract
Description
Die Erfindung betrifft einen glimmerverstärkten Isolierschlauch zur Isolation von elektrischen Kontaktverbindungen.The invention relates to a mica-reinforced insulating tube for the isolation of electrical contact connections.
Elektrische Kontaktverbindungen von elektrischen Betriebsmitteln, z.B. zwischen Spulen elektrischer Maschinen oder Transformatoren sind insbesondere bei Nennspannungen über 1 KV elektrisch gegeneinander und gegen Erdpotential ausreichend zu isolieren. Dabei folgt, insbesondere bei elektrischen Betriebsmitteln im Nennspannungsbereich ab 1 KV eine Isolation der Kontaktverbindungen durch manuelle Umwicklung mit Glimmerbändern.Electrical contact connections of electrical equipment, e.g. between coils of electrical machines or transformers, in particular at rated voltages of more than 1 kV, it is possible to sufficiently insulate them against each other and against ground potential. This is followed, in particular for electrical equipment in the nominal voltage range from 1 KV insulation of the contact connections by manual wrapping with mica tapes.
Bei geringeren Nennspannungen, also kleiner 1 KV erfolgt die Isolation in einer Vielzahl der Fälle durch an sich bekannte Isolierschläuche.At lower rated voltages, that is less than 1 KV, the insulation is done in many cases by known insulating hoses.
Bei höheren Spannungen werden aber erhöhte Anforderungen an die elektrische Festigkeit und Teilentladungsbeständigkeit der Isolation bei gleichzeitig geringer Wandstärke gestellt. Diese Anforderung kann durch unverstärkte lackierte oder extrudierte Isolierschläuche nur unzureichend erfüllt werden.At higher voltages, however, increased demands are placed on the electrical strength and partial discharge resistance of the insulation while at the same time having a small wall thickness. This requirement can not be adequately met by unreinforced lacquered or extruded insulating hoses.
Durch manuelle Umwicklungen von Glimmerbändern auf Kontaktverbindungen besteht auch die Gefahr, dass die Lagen der Glimmerbänder bei der Montage verschoben werden und dadurch letztendlich in ihrer elektrischen Festigkeit im Betrieb dieser elektrischen Betriebsmittel reduziert werden.By manually wrapping mica tapes on contact connections, there is also a risk that the layers of mica tapes will be displaced during assembly and thereby ultimately reduced in their electrical strength in the operation of these electrical equipment.
Um diesen Nachteil zu vermeiden, kann die manuelle Umwicklung auch erst nach der endgültigen Formgebung der Kontaktverbindungen erfolgen.To avoid this disadvantage, the manual wrapping can also be done only after the final shaping of the contact connections.
Aus
Aus der
Um dabei jeweils eine glimmerhaltige Isolation zu schaffen sind äußerst aufwändige Herstellverfahren anzuwenden, die dabei entstehenden Produkte weisen, um die erforderliche Isolationsfestigkeit zu erhalten dementsprechende Wandstärken des Schlauchs auf. Dies führt insbesondere bei höheren Nennspannungen (größer 1KV) zu fertigungstechnischen Problemen. Die Schläuche weisen einen sehr eingeschränkten Flexibilität und damit einen sehr eingeschränkten Biegeradius auf.In order to create a mica-containing insulation in each case are extremely complex manufacturing process apply, the resulting products have to obtain the required insulation resistance corresponding wall thicknesses of the hose. This leads to production engineering problems, especially at higher rated voltages (greater than 1 kV). The hoses have a very limited flexibility and thus a very limited bending radius.
Ausgehend davon liegt die Aufgabe der Erfindung zugrunde, für Kontaktverbindungen insbesondere für elektrische Betriebsmittel mit Nennspannungen über 1 KV Isolationen zu schaffen, die einfach herzustellen sind und geringe Wanddicken aufweisen. Des Weiteren soll die Isolation flexibel sein, damit dementsprechende Kontaktverbindungen auch mit ausreichender elektrischer Festigkeit isoliert werden können.Based on this, the object of the invention to provide for contact connections in particular for electrical equipment with rated voltages above 1 KV insulation, which are easy to manufacture and have low wall thicknesses. Furthermore, the insulation should be flexible, so that corresponding contact connections can also be isolated with sufficient electrical strength.
Die Lösung der gestellten Aufgabe gelingt durch einen glimmerverstärkter Isolierschlauch zur Isolation von elektrischen Kontaktverbindungen mit einem Trägerschlauch, der ein ein- oder mehrlagig ihn umgebendes Glimmerband aufweist, wobei der Trägerschlauch aus Gewebe hergestellt ist, wobei das Gewebe geflochten oder gestrickt oder geklöppelt ist und wobei das Gewebe aus Glas oder Kunstfasern aufgebaut ist.The solution of the problem is achieved by a mica reinforced insulating for the isolation of electrical contact connections with a carrier tube having a single or multi-layer surrounding him mica tape, wherein the carrier tube is made of fabric, wherein the fabric is braided or knitted or lace and wherein the Fabric is constructed of glass or synthetic fibers.
Die Lösung der gestellten Aufgabe gelingt auch durch einen glimmerverstärkter Isolierschlauch zur Isolation von elektrischen Kontaktverbindung mit einem Trägerschlauch, der ein ein- oder mehrlagig ihn umgebendes Glimmerband aufweist, wobei der Trägerschlauch ein geschlossener einstückiger Schlauch ist, der einen Mantel aus PU, Acrylat oder Silikon aufweist.The solution of the problem is also achieved by a mica reinforced insulating for the isolation of electrical contact connection with a carrier tube having a single or multi-layer surrounding him mica tape, said the carrier tube is a closed one-piece tube having a jacket made of PU, acrylate or silicone.
Die Lösung der gestellten Aufgabe gelingt aber auch durch ein Verfahren zur Herstellung eines glimmerverstärkten Isolierschlauchs gekennzeichnet durch folgende Schritte:
- ein Trägerschlauch wird durch Druckluft und/oder einen Dorn auf einen gewünschten Innendurchmesser aufgeweitet,
- ein Glimmerband wird um den in diesem Zustand befindlichen Trägerschlauch umsponnen,
- dabei ist die Überlappung und/oder die Anzahl der Lagen des Glimmerbandes einstellbar.
- a carrier hose is expanded by compressed air and / or a mandrel to a desired inner diameter,
- a mica tape is wrapped around the carrier hose in this condition,
- while the overlap and / or the number of layers of mica tape is adjustable.
Diese erfindungsgemäße glimmerverstärkte Isolierung zeichnet sich durch einen geschichteten Aufbau aus, der erfindungsgemäß durch einen Trägerschlauch und darauf befindlichen Glimmerwerkstoffen gekennzeichnet ist. Durch ein- oder mehrlagige Schichten einer Glimmerbandage mit einstellbarer Überlappung kann die elektrische Festigkeit bzw. die Teilentladungsbeständigkeit den jeweiligen Spannungserfordernissen angepasst werden. Das sind sowohl die Nennspannungsbeanspruchungen, als auch die zu erwarteten Überspannungseffekte bei Umrichterbetrieb von elektrischen Maschinen oder aufgrund von Überspannungen aufgrund von Netzanomalien, wie z.B. Blitzeinschlag oder Wanderwelleneffekte auf elektrischen Leitungen und Kabeln.This inventive mica reinforced insulation is characterized by a layered structure, which is characterized according to the invention by a carrier tube and mica materials located thereon. By means of single or multilayer layers of a mica bandage with adjustable overlapping, the electrical strength or the partial discharge resistance can be adapted to the respective voltage requirements. These are both the rated voltage stresses as well as the expected overvoltage effects in inverter operation of electrical machines or due to overvoltages due to network anomalies, e.g. Lightning strike or traveling wave effects on electrical wires and cables.
Der geschichtete Aufbau kann beispielsweise dadurch erfolgen, dass ein Gewebeschlauch, der geflochten, gestrickt oder geklöppelt ausgeführt ist, mit einer Beschichtung aus Glimmerband umsponnen ist. Des Weiteren sind ebenfalls durchgehende also einstückige Schläuche mit einer Beschichtung aus PU, Acrylat oder Silikon mit einem Glimmerband umspinnbar, um einen glimmerverstärkten Isolierschlauch zur Isolation von elektrischen Kontaktverbindungen zu erhalten.The layered construction can be carried out, for example, by braiding a fabric tube, which is braided, knitted or laceed, with a coating of mica tape. Furthermore, also continuous so one-piece hoses with a coating of PU, acrylate or silicone with a mica tape are spun around to obtain a mica reinforced insulating tube for the isolation of electrical contact connections.
Glimmer ist ein anorganischer Isolierstoff und hat vergleichsweise sehr gute elektrische Isolations- und Wärmeeigenschaften. Außerdem eine sehr gute Kriechstrom- und Durchschlagsfestigkeit. Die Elektrizitätskonstante εr liegt zwischen 5 und 8.Mica is an inorganic insulating material and has comparatively very good electrical insulation and thermal properties. In addition, a very good creepage and dielectric strength. The electricity constant ε r is between 5 and 8.
Ein Glimmerband weist kleine Glimmerstücke auf, die mit einem Bindemittel verklebt und unter Wärmeeinwirkung gepresst werden. Die Dichte der Glimmerstücke beeinflusst direkt die elektrischen Isolationseigenschaften.A mica tape has small pieces of mica, which are glued with a binder and pressed under heat. The density of mica pieces directly affects the electrical insulation properties.
Vorteilhafterweise weist dieses poröse Glimmerband einen Beschleuniger auf, der dadurch die Aushärtung des Tränkharzes im Trägerschlauch begünstigt.Advantageously, this porous mica tape on an accelerator, which thereby favors the curing of the impregnating resin in the carrier tube.
In einer weiteren vorteilhaften Ausgestaltung wird der glimmerverstärkte Isolierschlauch mit einem mechanischen Schutz aus einem Fasergeflecht, das eine Glas- oder Kunststofffaser sein kann, versehen.In a further advantageous embodiment of the mica reinforced insulating hose is provided with a mechanical protection of a fiber braid, which may be a glass or plastic fiber.
Der erfindungsgemäße glimmerverstärkte Isolierschlauch wird in einer bevorzugten Ausführungsform durch folgende Schritte hergestellt: durch Druckluft und/oder durch einen Dorn wird der Trägerschlauch auf den gewünschten Innendurchmesser gebracht, und in diesem Zustand mit einem Glimmerband umsponnen.The inventive mica-reinforced insulating tube is produced in a preferred embodiment by the following steps: by compressed air and / or by a mandrel of the carrier tube is brought to the desired inner diameter, and wound in this state with a mica tape.
Vorteilhafterweise können diese beiden bzw. drei Arbeitsvorgänge, Herstellen des Trägerschlauchs mit anschließendem Umspinnen des Glimmerbandes und ggf. Aufbringen eines mechanischen Schutzschlauches oder Schutzgeflechts durch eine Vorrichtung bzw. einen Arbeitsvorgang durchgeführt werden.Advantageously, these two or three operations, producing the carrier tube with subsequent rewinding of the mica tape and possibly applying a mechanical protective tube or protective braid can be performed by a device or a work process.
Der Glimmeranteil erhöht die elektrische Festigkeit und die Teilentladungsbeständigkeit der Isolierung auch bei geringer Wandstärke als bei unverstärkten lackierten oder extrudierten Isolierschläuchen.The mica content increases the electrical strength and the partial discharge resistance of the insulation even with a small wall thickness than unreinforced lacquered or extruded insulating hoses.
Die mechanische Festigkeit und Flexibilität gegenüber herkömmlichen gerollten Glimmerbandröllchen oder -röhrchen wird z.B. durch die Gewebeverstärkung des Trägerschlauchs wesentlich erhöht. Diese verhindert darüber hinaus eine Verschiebung der Lagen des Glimmerbandes insbesondere bei der Montage anderer Teile, so dass die elektrische Festigkeit des elektrischen Betriebsmittels gewährleistet werden kann.The mechanical strength and flexibility over conventional rolled mica tape rolls or tubes is e.g. significantly increased by the tissue reinforcement of the carrier tube. This also prevents a shift of the layers of mica tape, especially in the assembly of other parts, so that the electrical resistance of the electrical equipment can be guaranteed.
Durch die erfindungsgemäße Isolierung sind auch Kontaktierungen im Nennspannungsbereich über 1 KV in einfacher Art und Weise gegenüber Teilentladungen resistent zu gestalten.Due to the insulation according to the invention, contacts in the rated voltage range above 1 kV can also be made resistant to partial discharges in a simple manner.
Dabei werden diese nunmehr gebildeten Schläuche bei den jeweiligen elektrischen Betriebsmitteln, wie elektrische Maschinen, Umrichter, oder Transformatoren über die jeweilige zu isolierende Stelle geschoben, ohne die Befürchtung haben zu müssen, dass sich die vorhandenen Lagen der Isolation in ihrer Position verändern.In the process, these hoses, which are now formed, are pushed over the respective location to be insulated in the case of the respective electrical equipment, such as electrical machines, converters, or transformers, without having to fear that the existing layers of the insulation will change in their position.
Die Isolation wird somit vor der endgültigen Formgebung der Kontaktverbindung aufgebracht und hält den mechanischen Beanspruchungen bei dieser Formgebung stand.The insulation is thus applied before the final shaping of the contact connection and withstands the mechanical stresses in this shaping.
Auch die Herstellung von elektrischen Maschinen vereinfacht sich erheblich, da im Herstellungsprozess, die vorgefertigten erfindungsgemäßen flexiblen Isolierschläuche einfach über die zu isolierenden Kontaktverbindungen geschoben werden und mit der gesamten elektrischen Maschine anschließend imprägniert werden.The production of electrical machines is simplified considerably, since in the manufacturing process, the prefabricated flexible insulating invention according to the invention are simply pushed over the contact connections to be insulated and then impregnated with the entire electrical machine.
Die Erfindung sowie weitere vorteilhafte Ausgestaltungen der Erfindung gemäß Merkmalen der Unteransprüche werden im folgenden anhand eines schematisch dargestellten Ausführungsbeispiels näher erläutert.The invention and further advantageous embodiments of the invention according to features of the subclaims are explained in more detail below with reference to a schematically illustrated embodiment.
Die Figur zeigt einen Abschnitt eines erfindungsgemäßen Isolationsschlauches 1, dessen Basis ein geflochtener Glasschlauch bildet, der als Trägerschlauch 2 ausgebildet ist. Dieser geflochtene Glasschlauch 2 ist von einem Mantel 3 aus beispielsweise LSR(Liquid-Silicon-Rubber) umgeben. Dieser Mantel 3 ist beispielsweise aus flüssigem Silikonkautschuk aufgebaut. Diese Anordnung ist nunmehr von einem Glimmerband 4 umgeben, das durch eine vorgegebene Lagenzahl und/oder einer vorgebbaren Überlappung der einzelnen Lagen eine Glimmerschicht definierter Schichtdicke ergibt. Die jeweiligen Glimmerbänder 4 weisen vorteilhafterweise eine jeweils definierten Schichtdicke und/oder Lagenbreite auf.The figure shows a portion of an
Als mechanischer Schutz eignet sich insbesondere eine PET(Poly-Ethylen-Terrespalat)-Fasergeflecht 5.As a mechanical protection, in particular a PET ( P oly- E thylen- T errespalat) -
Die Herstellung erfolgt in einer dementsprechend ausgestalteten Vorrichtung, die die einzelnen Schichten definiert aufbringen können. Vorteilhafterweise werden die Fertigungsschritte in einer Vorrichtung durchgeführt. Dabei wird eingeflochtener gestrickter oder geklöppelter Trägerschlauch 2 aus Glas- oder Kunstfasern z.B. durch Druckluft auf den gewünschten Innendurchmesser gebracht.The preparation takes place in a correspondingly designed device, which can apply the individual layers defined. Advantageously, the manufacturing steps are performed in a device. In this case, interlaced knitted or
Alternativ dazu kann der Trägerschlauch 2 auch auf einen dementsprechend dimensionierten Dorn aufgebracht werden.Alternatively, the
In einer weiteren Ausführungsform wird der Trägerschlauch 2 vor dem nächsten Verfahrensschritt mit einem Mantel 3 aus PU, Acrylat oder Silikon versehen.In a further embodiment, the
In diesem Zustand wird nunmehr der Trägerschlauch 2 mit dem Glimmerband 4 umsponnen. Das Glimmerband 4 ist porös und enthält vorteilhafterweise einen Beschleuniger, um dadurch die Aushärtung eines Tränkharzes im Trägerschlauch 2 zu begünstigen.In this state, the
Durch die Überlappung des Glimmerbandes 4 bei der Umspinnung wird in vorgebbarer Weise der Glimmeranteil des Trägerschlauchs 2 abschnittsweise variiert und damit eingestellt werden.Due to the overlap of the
Als mechanischer Schutz wird in vorteilhafterweise der glimmerbandumsponnene Trägerschlauch 2 mit einem Fasergeflecht 5 aus Glas- oder Kunststofffasern versehen.As mechanical protection, the mica tape-braided
Der Glimmeranteil erhöht die elektrischen Festigkeit und die Teilladungsbeständigkeit des Isoliersachlauchs 1 bei gegenüber lackierten oder extrudierten vergleichsweise geringer Wandstärke.The mica content increases the electrical strength and the partial charge resistance of the
Die mechanische Festigkeit und Flexibilität gegenüber herkömmlichen gerollten Glimmerbandröllchen oder -röhrchen wird u.a. durch die Gewebeverstärkung des Trägerschlauchs 2 im Vergleich zu anderen Isolierschläuchen wesentlich erhöht.The mechanical strength and flexibility over conventional rolled mica tape rolls or tubes becomes among other things by the fabric reinforcement of the
Dies verhindert darüber hinaus eine Verschiebung der Lagen des Glimmerbandes 4 insbesondere bei der Montage anderer Teile des elektrischen Betriebsmittels, so dass die elektrische Festigkeit des elektrischen Betriebsmittels z.B. einer elektrischen Maschine gewährleistet werden kann.This also prevents a shift of the layers of the
Der erfindungsgemäße glimmerverstärkte Isolierschlauch 1 weist zumindest einen von einem Glimmerband 4 umsponnenen Trägerschlauch 2 auf. In weiteren Ausführungsformen sind eine Mantel 3 und/oder ein Fasergeflecht 5 vorgesehen.The inventive mica reinforced
Claims (10)
- Mica-reinforced insulating sleeve (1) for insulation of electrical contact connections having a mount sleeve (2) which has a mica strip (4) which surrounds it in one or more layers, with the mount sleeve (2) being produced from fabric, with the fabric being woven, knitted or laced, and with the fabric being formed from glass or synthetic fibers.
- Mica-reinforced insulating sleeve (1) for insulation of an electrical contact connection having a mount sleeve (2) which has a mica strip (4) which surrounds it in one or more layers, with the mount sleeve (2) being a closed integral sleeve which has a casing (3) composed of Pu, acrylate or silicone.
- Mica-reinforced insulating sleeve (1) according to one of the preceding claims,
characterized in that
an additional fiber mesh (5) composed of glass fibers or plastic fibers, or a sleeve, is provided as mechanical protection. - Method for production of a mica-reinforced insulating sleeve (1) according to one of the preceding claims, characterized by the following steps:- a mount sleeve (2) is widened by compressed air and/or a mandrel to a desired internal diameter,- at least one mica strip (4) is spun around the mount sleeve (2) that is in this state,- in this case, the overlap and/or the number of layers of the mica strip (4) on the mount sleeve (2) are/is adjustable.
- Method according to Claim 4,
characterized in that
a fiber mesh (5) composed of glass fibers or plastic fibers is additionally applied as mechanical protection to the mount sleeve (2) around which the mica strip (4) has been spun. - Method according to Claim 5,
characterized in that
the fiber mesh (5) is immersed in silicone or similar materials. - Use of an insulating sleeve (1) according to one of the preceding claims for mica-reinforced insulation of contacts of the components of electrical equipment.
- Use of an insulating sleeve (1) according to Claim 7 for making contact with the components of electrical equipment with a rated voltage of more than 1 kV.
- Use of mica-reinforced insulation according to Claim 8, with the electrical equipment being converters, transformers or electrical machines.
- Production method for an electrical machine comprising the following steps:- the laminated cores of the stator and rotor are packetized,- the coils are inserted into the stator and/or the rotor,- the circuit connections are formed, for example between coils and possibly converters, with a mica-reinforced insulating sleeve (1) according to one of the preceding claims being pushed over the circuit connections.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102005055290A DE102005055290B3 (en) | 2005-11-21 | 2005-11-21 | Mica-strengthened insulating tubing for electrical contact connections and electrical machine and production processes has fiber textile tube with mica layer or multi-layer |
| PCT/EP2006/067141 WO2007057251A1 (en) | 2005-11-21 | 2006-10-06 | Mica-reinforced insulation |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1952407A1 EP1952407A1 (en) | 2008-08-06 |
| EP1952407B1 true EP1952407B1 (en) | 2009-02-25 |
Family
ID=37492452
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP06793986A Not-in-force EP1952407B1 (en) | 2005-11-21 | 2006-10-06 | Mica-reinforced insulation |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US20080286505A1 (en) |
| EP (1) | EP1952407B1 (en) |
| CN (1) | CN101313369B (en) |
| AT (1) | ATE424029T1 (en) |
| BR (1) | BRPI0618803B1 (en) |
| DE (2) | DE102005055290B3 (en) |
| WO (1) | WO2007057251A1 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2824801A1 (en) | 2013-07-12 | 2015-01-14 | Siemens Aktiengesellschaft | Method for the production of a dynamo-electric rotational machine and dynamo-electric rotational machine |
| EP2874280A1 (en) | 2013-11-14 | 2015-05-20 | Siemens Aktiengesellschaft | Groove closure mass, groove closure and method for producing a groove closure |
| US10354779B2 (en) * | 2017-03-31 | 2019-07-16 | Radix Wire & Cable, Llc | Free air fire alarm cable |
| WO2020180554A1 (en) * | 2019-03-01 | 2020-09-10 | Milwaukee Electric Tool Corporation | Power tool and battery pack for use with the same |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2772696A (en) * | 1953-04-21 | 1956-12-04 | Westinghouse Electric Corp | Flexible resin bonded mica members |
| US3823255A (en) * | 1972-04-20 | 1974-07-09 | Cyprus Mines Corp | Flame and radiation resistant cable |
| US4607851A (en) * | 1977-11-30 | 1986-08-26 | Metex Corporation | Method of making composite wire mesh seal |
| FR2573910B1 (en) * | 1984-11-29 | 1987-06-19 | Habia Cable | FLEXIBLE FIRE RESISTANT INSULATION COATING FOR ELECTRICAL CONDUITS, WIRES AND CABLES |
| DE3514879A1 (en) * | 1985-04-04 | 1986-10-09 | BBC Aktiengesellschaft Brown, Boveri & Cie., Baden, Aargau | METHOD FOR REDUCING WATER VAPOR DIFFUSION IN A MULTIPLE LAYER PLASTIC COMPOSITE INSULATOR |
| JPS62154505A (en) * | 1985-12-26 | 1987-07-09 | アクソン・カーブル・エス・アー | Fire resistant flexible insulating covering for pipe, wire, cable and optical fiber |
| JPH01160339A (en) * | 1987-12-17 | 1989-06-23 | Toshiba Corp | Manufacture of insulated coil for rotary electric machine |
| US5144739A (en) * | 1991-06-26 | 1992-09-08 | General Electric Company | Method of establishing a leakage current path for a commutator |
| DE4244298C2 (en) * | 1992-12-28 | 2003-02-27 | Alstom | Electrical tape and process for its manufacture |
| DE4434825A1 (en) * | 1994-09-29 | 1996-05-23 | Tissu Rothrist Ag | Flat composite material |
-
2005
- 2005-11-21 DE DE102005055290A patent/DE102005055290B3/en not_active Expired - Fee Related
-
2006
- 2006-10-06 WO PCT/EP2006/067141 patent/WO2007057251A1/en active Application Filing
- 2006-10-06 EP EP06793986A patent/EP1952407B1/en not_active Not-in-force
- 2006-10-06 US US12/094,382 patent/US20080286505A1/en not_active Abandoned
- 2006-10-06 BR BRPI0618803-6A patent/BRPI0618803B1/en not_active IP Right Cessation
- 2006-10-06 AT AT06793986T patent/ATE424029T1/en not_active IP Right Cessation
- 2006-10-06 CN CN2006800432831A patent/CN101313369B/en not_active Expired - Fee Related
- 2006-10-06 DE DE502006002980T patent/DE502006002980D1/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| EP1952407A1 (en) | 2008-08-06 |
| BRPI0618803A2 (en) | 2011-09-13 |
| US20080286505A1 (en) | 2008-11-20 |
| WO2007057251A1 (en) | 2007-05-24 |
| BRPI0618803B1 (en) | 2018-01-23 |
| CN101313369B (en) | 2011-11-23 |
| ATE424029T1 (en) | 2009-03-15 |
| DE102005055290B3 (en) | 2007-05-03 |
| CN101313369A (en) | 2008-11-26 |
| DE502006002980D1 (en) | 2009-04-09 |
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