CH128313A - Process for impregnating electrical capacitors with insulating material. - Google Patents
Process for impregnating electrical capacitors with insulating material.Info
- Publication number
- CH128313A CH128313A CH128313DA CH128313A CH 128313 A CH128313 A CH 128313A CH 128313D A CH128313D A CH 128313DA CH 128313 A CH128313 A CH 128313A
- Authority
- CH
- Switzerland
- Prior art keywords
- insulating material
- electrical capacitors
- impregnating
- capacitors
- sulfur
- Prior art date
Links
Landscapes
- Fixed Capacitors And Capacitor Manufacturing Machines (AREA)
Description
Verfahren zuin Tränken von elektrischen Kondensatoren mit Isolierstoff. Die Erfindung bezieht sich auf solche elektrische Kondensatoren, deren Dielektrikum mit einer in der Hauptsache oder vollständig aus Schwefel bestehenden Tränkmasse behan delt wird. Bei der Herstellung dieser Konden satoren entstehen beim Erstarren des Schwe fels durch dessen starkes Schwinden Hohl räume im Kondensator, die sich mit Luft füllen. Um diesen Übelstand zu vermeiden, werden die Kondensatoren erfindungsgemäss unmittelbar nach ihrem Tränken mit Schwefel, also solange dieser noch flüssig ist, in. einen geeigneten Isolierstoff mit niedrigerem Schmelz punkt getaucht.
Es kann dann beim Erstarren des Schwefels nur der zweite Isolierstoff in die im Kondensator sich bildenden Hohl räume nachgesaugt werden, aber keine Luft.
Als Isolierstoff für das Nachtränken des Dielektrikums eignet sich zum Beispiel Mon tanwachs, dessen Schmelzpunkt zwischen 70 und 80 Celsius liegt. Die mit diesem Stoff nachbehandelten Kondensatoren besitzen die hohe Durchschlagsfestigkeit der nur mit Mon tanwachs getränkten Kondensatoren, ohne jedoch deren Nachteil zu zeigen. Dieser be steht darin, dass das Montanwachs beim Er- wärmen über seinem Schmelzpunkt aus dem Kondensator herausfliesst, so dass Kondensa toren, die nur mit Montanwachs getränkt wurden, gegen Wärme sehr empfindlich sind. Wird Montanwachs aber lediglich zum Nach füllen der Hohlräume des schwefelgetränkten Kondensators benutzt, so bleibt der Konden sator bis zum Schmelzpunkt des Schwefels gebrauchsfähig.
Das bei Erwärmung des Kon- densators flüssig werdende Montanwachs kann nicht herausfliessen, da es durch Kapillar wirkung gehalten wird.
Process for soaking electrical capacitors with insulating material. The invention relates to such electrical capacitors whose dielectric is treated with an impregnating compound consisting mainly or entirely of sulfur. In the manufacture of these capacitors, when the sulfur solidifies, cavities are created in the capacitor due to its rapid shrinkage, which fill with air. In order to avoid this inconvenience, the capacitors according to the invention are immersed in a suitable insulating material with a lower melting point immediately after they have been soaked with sulfur, that is, as long as it is still liquid.
When the sulfur solidifies, only the second insulating material can be sucked into the cavities forming in the capacitor, but no air.
Mon tan wax, for example, whose melting point is between 70 and 80 Celsius, is suitable as an insulating material for re-soaking the dielectric. The capacitors post-treated with this substance have the high dielectric strength of the capacitors only impregnated with Mon tan wax, but without showing their disadvantage. This consists in the fact that the montan wax flows out of the condenser when it is heated above its melting point, so that condensers which have only been soaked with montan wax are very sensitive to heat. But if montan wax is only used to refill the cavities of the sulfur-soaked capacitor, the capacitor remains usable up to the melting point of the sulfur.
The montan wax, which becomes liquid when the condenser is heated, cannot flow out because it is held in place by capillary action.
Claims (1)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE128313X | 1927-01-05 |
Publications (1)
Publication Number | Publication Date |
---|---|
CH128313A true CH128313A (en) | 1928-10-16 |
Family
ID=5662495
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH128313D CH128313A (en) | 1927-01-05 | 1927-11-10 | Process for impregnating electrical capacitors with insulating material. |
Country Status (1)
Country | Link |
---|---|
CH (1) | CH128313A (en) |
-
1927
- 1927-11-10 CH CH128313D patent/CH128313A/en unknown
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