DE1072663B - Multi-layer insulation based on cast resin for electrical components - Google Patents
Multi-layer insulation based on cast resin for electrical componentsInfo
- Publication number
- DE1072663B DE1072663B DENDAT1072663D DE1072663DA DE1072663B DE 1072663 B DE1072663 B DE 1072663B DE NDAT1072663 D DENDAT1072663 D DE NDAT1072663D DE 1072663D A DE1072663D A DE 1072663DA DE 1072663 B DE1072663 B DE 1072663B
- Authority
- DE
- Germany
- Prior art keywords
- resin
- electrical components
- layer
- cast resin
- cast
- 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.)
- Pending
Links
- 229920005989 resin Polymers 0.000 title claims description 19
- 239000011347 resin Substances 0.000 title claims description 19
- 238000009413 insulation Methods 0.000 title claims description 9
- 239000003822 epoxy resin Substances 0.000 claims description 15
- 229920000647 polyepoxide Polymers 0.000 claims description 15
- 238000005266 casting Methods 0.000 claims description 8
- 239000004593 Epoxy Substances 0.000 claims description 2
- 238000005470 impregnation Methods 0.000 claims description 2
- 229920001225 polyester resin Polymers 0.000 claims description 2
- 239000004645 polyester resin Substances 0.000 claims description 2
- LNEPOXFFQSENCJ-UHFFFAOYSA-N haloperidol Chemical compound C1CC(O)(C=2C=CC(Cl)=CC=2)CCN1CCCC(=O)C1=CC=C(F)C=C1 LNEPOXFFQSENCJ-UHFFFAOYSA-N 0.000 description 3
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical compound [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 239000005011 phenolic resin Substances 0.000 description 2
- 229920001568 phenolic resin Polymers 0.000 description 2
- 229920000728 polyester Polymers 0.000 description 2
- 239000002966 varnish Substances 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229920006305 unsaturated polyester Polymers 0.000 description 1
Classifications
-
- 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
- H01B3/18—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances
- H01B3/30—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes
- H01B3/40—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes epoxy resins
Landscapes
- Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Insulating Bodies (AREA)
Description
Mehrschichtisolation auf Gießharzbasis für elektrische Bauteile Es sind Isolationen für elektrische Bauteile bekannt, die sich aus Isolierschichten verschiedenen Aufbaumaterials zusammensetzen. Meist werden die ,elektrischen Bauteile, beispielsweise Wicklungen, mit einem- niedrigviskosen Tränklack, z. B. einem-Epoxydharz, imprägniert, um eine gute Durchtränkung der Wicklungen mit dem Imprägniermittel zu erreichen und damit in geeignete Gießharze, z. B. einem Epoxydharz, eingebettet, die mehr oder weniger große Mengen von Füllstoffen enthalten. Oft vertragen sich aber der Tränklack und das Gießharz sehr schlecht. Man hat deshalb schon versucht, diese beiden Komponenten durch eine dritte Foiienzwischenschicht zu trennen, die gegenüber den angrenzenden Schichten ausreichend widerstandsfähig ist.Cast resin-based multilayer insulation for electrical components Es Insulations for electrical components are known, which are made up of insulating layers assemble different building materials. Usually the, electrical components, for example, windings, with a low-viscosity impregnating varnish, e.g. B. an epoxy resin, impregnated to ensure that the windings are thoroughly impregnated with the impregnating agent to achieve and thus in suitable casting resins, z. B. an epoxy resin, embedded, which contain more or less large amounts of fillers. Often get along but the impregnating varnish and the casting resin are very bad. Therefore one has already tried to separate these two components by a third intermediate layer of film, the is sufficiently resistant to the adjacent layers.
In -solcher Art aufgebaute Mehrschichtisolationen haben wohl eine ausreichende elektrische Festigkeit durch ihre innere Isolierschicht, ihre äußere Ummantezeigt meist eine genügende mechanische Festigkeit. In elektrischer Hinsicht läßt die mehr oderweniger stark gefüllte Epoxyd-Gießharzschicht hinsichtlich der Kriechstromfestigkeit noch zu wünschen übrig: Die Herstellung einer Isolation für elektrische Bauteile aus füllstofffreien und daher kriechwegfesten Gießharzen bereitet Schwierigkeiten, da bei der Aushärtung des Harzes in dickeren Schichten die Gefahr der Rißbildung gegeben ist.Multi-layer insulation constructed in this way probably has one sufficient electrical strength through their inner insulating layer, their outer Sheathing usually shows sufficient mechanical strength. In electrical terms leaves the more or less heavily filled epoxy cast resin layer with regard to the Leakage current resistance left something to be desired: The production of insulation for electrical components made from filler-free and therefore creep path-resistant casting resins Difficulties, as there is a risk of hardening the resin in thick layers the crack formation is given.
Eine Umhüllung mit gefülltem Polyestergießharz in dicker Schicht genügt in vielen Fällen nicht in mechanischer Hinsicht,. und angefüllt weisen diese Harze; ebenso wie angefüllte Epoxydharze, einen zu großen Volumenschwund auf.A covering with filled polyester casting resin in a thick layer is sufficient in many cases not in mechanical terms. and filled with these resins; just like filled epoxy resins, show too great a loss of volume.
Die Erfindung ermöglicht, Mehrschichtisolationen auf Epoxydharzbasis herzustellen, die sowohl in elektrischer als auch in mechanischer Hinsicht den gestellten Anforderungen hinreichend genügen. Vor allem werden dabei unter Verwendung von gefüllten Epoxydharzen Isolationen erhalten, deren äußere Ummantelung kriechstromfest ist.The invention enables multilayer insulation based on epoxy resin to produce, both in electrical and mechanical terms, the posed Sufficiently meet requirements. Above all, be made using stuffed Epoxy resin isolations are obtained, the outer sheathing of which is resistant to tracking currents.
Erreicht ist dies bei einer Mehrschichtisolation auf Gießharzbasis für elektrische Bauteile aus einer dünnen Epoxydharzschicht, die sich infolge der mit einem bei der V ergußtemperatur niedrigviskosen Epoxydharz vorgenommenen Imprägnierung auf den elektrischen Bauteilen gebildet hat, und einer darauf aufgebrachten Gießharzumhüllung aus gefülltem Epoxydgießharz dadurch, daß gemäß der Erfindung auf die Gießharzumhüllung eine kriechstromfeste dünne Schicht auf Gießharzbasis aufgebracht ist.This is achieved with a multi-layer insulation based on cast resin for electrical components made of a thin epoxy resin layer, which is due to the with an impregnation made at the casting temperature with a low viscosity epoxy resin has formed on the electrical components, and a cast resin coating applied thereon from filled epoxy resin in that according to the invention on the cast resin casing a thin, creep-resistant, cast resin-based layer is applied.
Gemäß einer weiteren Ausgestaltung der Erfindung kann die kriechstromfeste Schicht aus angefülltem Epoxydharz oder gefülltem oder angefülltem Polyesterharz bestehen. Dadurch wird eine Oberflächenveredelung erreicht, die insbesondere zur Verbesserung der Kriechstromfestigkeit dient.According to a further embodiment of the invention, the tracking current-resistant Layer of filled epoxy resin or filled or filled polyester resin exist. As a result, a surface refinement is achieved, which is particularly useful for Improvement of the tracking resistance is used.
Für Isolierkörper aus Phenolharz ist es bereits bekannt, einen Überzug auf Basis ungesättigter Polyester aufzubringen, um eine Verbesserung der Kriechstromfestigkeit der an sich nicht kriechstromfesten Isolierkörper auf Phenolharzbasis zu erreichen.It is already known to use a coating for insulating bodies made of phenolic resin based on unsaturated polyester to improve the tracking resistance to achieve the insulating body based on phenolic resin, which is not inherently resistant to tracking.
Nach Angaben in der Literatur wird die Kriechstromfestigkeit gefüllter Epoxydharze auf Bisphenol-Epichlorhydrin-Basis als gut bezeichnet. Die Kriechstromfestigkeit angefüllter Epoxydharze gemessen nach DIN 53 480 liegt jedoch um zwei bis drei Stufen über der von gefülltem Epoxydharz.According to information in the literature, the tracking resistance is filled Epoxy resins based on bisphenol-epichlorohydrin have been described as good. The tracking resistance filled epoxy resins measured according to DIN 53 480, however, is two to three levels above that of filled epoxy resin.
Eine solche Abhängigkeit vom Füllungsgrad zeigen Polyester-Gießharze nicht, so daß auf den Füllungsgrad im Hinblick auf Kriechstromfestigkeit bei ihnen nicht Rücksicht genommen werden inuß.Polyester casting resins show such a dependency on the degree of filling not, so that on the degree of filling in terms of tracking resistance with them need not be taken into account.
Claims (1)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE1072663B true DE1072663B (en) | 1960-01-07 |
Family
ID=597084
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DENDAT1072663D Pending DE1072663B (en) | Multi-layer insulation based on cast resin for electrical components |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE1072663B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1258490B (en) * | 1963-07-12 | 1968-01-11 | Westinghouse Electric Corp | Electrically insulating component with surface protection |
| DE2534232A1 (en) * | 1975-07-29 | 1977-02-03 | Wilhelm Westermann | Metallised plastics film condensers embedded in (epoxide) resin - have cured polyurethane lacquer between resin and winding |
-
0
- DE DENDAT1072663D patent/DE1072663B/en active Pending
Non-Patent Citations (1)
| Title |
|---|
| None * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1258490B (en) * | 1963-07-12 | 1968-01-11 | Westinghouse Electric Corp | Electrically insulating component with surface protection |
| DE2534232A1 (en) * | 1975-07-29 | 1977-02-03 | Wilhelm Westermann | Metallised plastics film condensers embedded in (epoxide) resin - have cured polyurethane lacquer between resin and winding |
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