DE976509C - Self-healing electrical capacitor - Google Patents
Self-healing electrical capacitorInfo
- Publication number
- DE976509C DE976509C DEB14548A DEB0014548A DE976509C DE 976509 C DE976509 C DE 976509C DE B14548 A DEB14548 A DE B14548A DE B0014548 A DEB0014548 A DE B0014548A DE 976509 C DE976509 C DE 976509C
- Authority
- DE
- Germany
- Prior art keywords
- capacitor
- capacitor according
- dielectric
- self
- breakthrough
- 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
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES OR LIGHT-SENSITIVE DEVICES, OF THE ELECTROLYTIC TYPE
- H01G4/00—Fixed capacitors; Processes of their manufacture
- H01G4/002—Details
- H01G4/005—Electrodes
- H01G4/015—Special provisions for self-healing
Description
Selbstheilender elektrischer Kondensator Die Erfindung bezieht sich auf einen selbstheilenden elektrischen Kondensator mit mindestens einer auf ein Isolierstoffband aufgedampften metallischen Belegung, die so dünn ist, daß der Metallbelag bei einem Durchschlag um die Durchschlagsstelle herum wegbrennt, und der mit einem Zusatzdielektrikum getränkt ist.Self-Healing Electrical Capacitor The invention relates to on a self-healing electrical capacitor with at least one on one Insulating tape vapor-deposited metallic coating, which is so thin that the metal coating with a breakdown burns away around the breakdown site, and the one with a Additional dielectric is impregnated.
Als bandförmiges Dielektrikum und gleichzeitig als Träger der metallischen Belegungen wurde bei der Herstellung derartiger sogenannter selbstausheilender Kondensatoren zunächst ausschließlich Papier verwendet, während zum Nachtränken der Kondensatorwickel Zusatzdielektrika mit den Handelsnamen Halowax, Nibrenwachs und Clophen wegen ihrer an sich guten dielektrischen Eigenschaften als besonders geeignet erschienen. Die Durchschlagsstellen mit diesen Stoffen getränkter Kondensatoren ergaben jedoch in manchen Fällen verschmutzte Ausbrände mit stark verminderter Isolationsgüte.As a band-shaped dielectric and at the same time as a carrier of the metallic Allocations were made in the manufacture of such so-called self-healing capacitors Initially only paper was used, while the capacitor winding was re-soaked Additional dielectrics with the trade names Halowax, Nibrenwachs and Clophen because of their good dielectric properties per se appeared to be particularly suitable. the However, there were breakdown points in capacitors soaked in these substances in some cases dirty burnouts with greatly reduced insulation quality.
Ein weiterer Nachteil derartiger Metallpapierkondensatoren ergab sich aus dem Sauerstoff- und Wasserstoffgehalt des Papiers, der bei Durchschlägen zur Entstehung von Wasser und in Verbindung mit den erwähnten Tränkmitteln zur Bildung von Halogenwasserstoffen führte, welche das Dielektrikum angriffen und zerstörten.Another disadvantage of such metal paper capacitors has been found from the oxygen and hydrogen content of the paper, which is used for copies Formation of water and in connection with the mentioned impregnating agents for formation of hydrogen halides, which attacked and destroyed the dielectric.
Im Laufe der weiteren Entwicklung von selbstausheilenden Kondensatoren sind zur Vermeidung dieser Nachteile schon an Stelle von Papier Kunst- .11 Stoffolien, wie z. B. Polystyrol, die sich durch -vorzügliche dielektrische Eigenschaften auszeichnen, verwendet worden. Diese Stoffe zeigten jedöeh ein nicht sehr befriedigendes Ausbrennv erhalten. Ihre Verwendbarkeit -wird außerdem durch ihre ungenügende Temperaturbeständigkeit stark eingeschränkt.In the course of the further development of self-healing capacitors are to avoid these disadvantages, instead of paper, art .11 Fabric films, such as. B. polystyrene, which has excellent dielectric properties distinguish has been used. These substances, however, were not very satisfactory Burnout obtained. Their usability is also due to their inadequate temperature resistance highly limited.
Wesentlich günstigere Ergebnisse werden erzielt, wenn gemäß der Erfindung das wirksame Dielektrikum des Kondensators aus einer Kunststoffolie aus einem aliphatischen Kohlenwasserstoff besteht, -bei dem alle Wasserstoffatome durch Halogenatome ersetzt sind und außerdem das Zusa;tzdielektrikum ebenfalls aus einem vollhalogenierten Kohlenwasserstoff besteht.Much more favorable results are achieved if according to the invention the effective dielectric of the capacitor made of a plastic film made of an aliphatic Hydrocarbon consists in which all hydrogen atoms are replaced by halogen atoms and the additional dielectric are also made from a fully halogenated one Hydrocarbon.
Zur Herstellung der Kunststoffolien haben sich _ Stoffe, wie z. B. Polytetrafluoräthylen und Polymonochlortrifluoräthylen, als besonders geeignet erwiesen. Diese Werkstoffe, ihre vorteilhaften Eigenschaften und ihre Verwendbarkeit im Kondensatorenbau - auch in Folienform - sind an sich bekannt.To produce the plastic films, _ substances such as B. Polytetrafluoroethylene and polymonochlorotrifluoroethylene have proven particularly suitable. These materials, their advantageous properties and their usability in capacitor construction - also in film form - are known per se.
Derartige aus halogenierten Kohlenwasserstoffen bestehende Folien können zugleich auch als Träger der Metallbeläge dienen..Es kann aber auch vorteilhaft sein, Papier als Metallschichtträger zu verwenden und es in einen feldfreien -Raum zu legen, während nichtmetallisierte Folien aus völl...haloge- . nierten Kohlenwasserstoffen als wirksames Dielektrikum dienen. Dabei werden zweckmäßig beide Seiten des Schichtträgers metallisiert und an-.das gleiche Potential gelegt. Da in diesem Fall ein etwaiger Durchschlag nicht durch das Papier hindurchgeht, können sich Wasser und Halogenwasserstoffe höchstens in so kleinen Mengen bilden, daß trotz der dadurch an sich gegebenen Korrosions-. Befahr eine technisch durchaus genügende Lebensdauer der Kondensatoren . gewährleistet ist. Am . zweckmäßigsten werden aber die. Kondensatoren nur aus Stoffen aufgebaut, welche überhaupt keinen Sauerstoff enthalten.Such films made of halogenated hydrocarbons can also serve as a carrier for the metal coverings. But it can also be advantageous be to use paper as a metal support and put it in a field-free space to lay, while non-metallized foils from completely ... halogen-. nated hydrocarbons serve as an effective dielectric. Both sides of the substrate are expediently metallized and applied to the same potential. Since in this case a possible If the paper does not leak through the paper, water and hydrogen halides can build up Form at most in such small quantities that despite the inherent corrosion properties. Have a technically sufficient lifespan of the capacitors. guaranteed is. At the . but the most useful ones will be. Capacitors built only from materials, which do not contain any oxygen at all.
Unter Berücksichtigung aller dieser Gesichtspunkte können selbstausheilende Kondensatorenhergestellt werden, die gute Ausbrände ergeben und außerdem ausgezeichnete dielektrische Eigenschaften und eine hohe Temperaturbeständigkeit aufweisen.Taking all of these considerations into account, you can self-healing Capacitors are produced that give good burnouts and also excellent have dielectric properties and high temperature resistance.
Claims (2)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEB14548A DE976509C (en) | 1951-04-14 | 1951-04-14 | Self-healing electrical capacitor |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEB14548A DE976509C (en) | 1951-04-14 | 1951-04-14 | Self-healing electrical capacitor |
Publications (1)
Publication Number | Publication Date |
---|---|
DE976509C true DE976509C (en) | 1963-10-17 |
Family
ID=6958030
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DEB14548A Expired DE976509C (en) | 1951-04-14 | 1951-04-14 | Self-healing electrical capacitor |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE976509C (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE977182C (en) * | 1953-04-28 | 1965-07-08 | Bosch Gmbh Robert | Electrical capacitor in which at least one burn-out coating is applied to a dielectrically not stressed insulating strip |
DE1640188A1 (en) * | 1965-11-18 | 1972-03-02 | Gen Electric | Polyolefin based dielectric |
US4170665A (en) | 1966-12-23 | 1979-10-09 | Siemens Aktiengesellschaft | Method of making impregnated electrical capacitor employing plastic foil dielectric |
Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CH181908A (en) * | 1934-03-15 | 1936-01-15 | Bosch Robert Ag | Electrostatic capacitor. |
AT145852B (en) * | 1934-07-24 | 1936-05-25 | Ig Farbenindustrie Ag | Process for the production of polyvinyl compounds. |
DE657080C (en) * | 1934-03-18 | 1938-02-23 | Siemens & Halske Akt Ges | Electrical wound capacitor with a dielectric made of polymerization products or halides of vinyl or styrene |
CH196456A (en) * | 1936-02-20 | 1938-03-15 | Siemens Ag | Process for the production of electrical wound capacitors with a dielectric made of polymeric material. |
DE677071C (en) * | 1934-10-06 | 1939-06-17 | I G Farbenindustrie Akt Ges | Process for the preparation of polymerization products |
DE695169C (en) * | 1936-04-17 | 1940-08-19 | Bosch Gmbh Robert | Electrostatic capacitor and process for its manufacture |
GB560946A (en) * | 1942-10-23 | 1944-04-27 | Hunt A H Ltd | Improvements in or relating to the manufacture of electric condensers |
US2520173A (en) * | 1948-01-14 | 1950-08-29 | Du Pont | Process for preparing unsupported films of tetrafluoroethylene polymers |
-
1951
- 1951-04-14 DE DEB14548A patent/DE976509C/en not_active Expired
Patent Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CH181908A (en) * | 1934-03-15 | 1936-01-15 | Bosch Robert Ag | Electrostatic capacitor. |
DE657080C (en) * | 1934-03-18 | 1938-02-23 | Siemens & Halske Akt Ges | Electrical wound capacitor with a dielectric made of polymerization products or halides of vinyl or styrene |
AT145852B (en) * | 1934-07-24 | 1936-05-25 | Ig Farbenindustrie Ag | Process for the production of polyvinyl compounds. |
DE677071C (en) * | 1934-10-06 | 1939-06-17 | I G Farbenindustrie Akt Ges | Process for the preparation of polymerization products |
CH196456A (en) * | 1936-02-20 | 1938-03-15 | Siemens Ag | Process for the production of electrical wound capacitors with a dielectric made of polymeric material. |
DE695169C (en) * | 1936-04-17 | 1940-08-19 | Bosch Gmbh Robert | Electrostatic capacitor and process for its manufacture |
GB560946A (en) * | 1942-10-23 | 1944-04-27 | Hunt A H Ltd | Improvements in or relating to the manufacture of electric condensers |
US2520173A (en) * | 1948-01-14 | 1950-08-29 | Du Pont | Process for preparing unsupported films of tetrafluoroethylene polymers |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE977182C (en) * | 1953-04-28 | 1965-07-08 | Bosch Gmbh Robert | Electrical capacitor in which at least one burn-out coating is applied to a dielectrically not stressed insulating strip |
DE1640188A1 (en) * | 1965-11-18 | 1972-03-02 | Gen Electric | Polyolefin based dielectric |
US4170665A (en) | 1966-12-23 | 1979-10-09 | Siemens Aktiengesellschaft | Method of making impregnated electrical capacitor employing plastic foil dielectric |
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