CH270165A - Insulation for multi-layer windings. - Google Patents
Insulation for multi-layer windings.Info
- Publication number
- CH270165A CH270165A CH270165DA CH270165A CH 270165 A CH270165 A CH 270165A CH 270165D A CH270165D A CH 270165DA CH 270165 A CH270165 A CH 270165A
- Authority
- CH
- Switzerland
- Prior art keywords
- insulation
- layer
- windings
- layer windings
- voltage
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/28—Coils; Windings; Conductive connections
- H01F27/32—Insulating of coils, windings, or parts thereof
- H01F27/323—Insulation between winding turns, between winding layers
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Coils Of Transformers For General Uses (AREA)
Description
Isolierung <B>für</B> mehrlagige <B>Wicklungen.</B> Bei einer Isolierung für mehrlagige Wick lungen nach dem Hauptpatent ist es notwen dig, um günstige räumliche Abmessungen und Gewichte zu erhalten, das Verhältnis
EMI0001.0005
in gewissen Grenzen zu halten, wo l die Länge einer Wicklungslage und L die Lagenzahl ist.
Massgebend ist die Lagenspannung UL, die sich aus folgender Gleichung bestimmt, wenn <I>U</I> die ganze Spannung der Wicklung und<I>p</I> der Proportionalitätsfaktor ist:
EMI0001.0010
Macht man L gross, um eine kleine Lagen spannung zu erhalten, so erhält man eine kurze, dicke Spule mit grosser Streuung. Wählt man anderseits eine kleine Lagenzahl, so wird die Lagenspannung zu hoch. Eine hohe Lagenspannung bedingt einen grossen Überschlagsweg zwischen :den Lagen.
Da die Überschlagaspannung proportional d0,4 an steigt, wenn d die Dicke der Lagenisolation ist, bedingt eine hohe Lagenspannung einen grossen Aufwand an Lagenisolation.
Gemäss der vorliegenden Erfindung ist eine wesentliche Verbesserung möglich, indem die Teilwicklungen je in zwei oder mehr Ab teilungen aufgeteilt werden, die miteinander in Serie geschaltet sind, wie dies die beilie gende, ein Ausführungsbeispiel der Erfin dung betreffende Figur schematisch zeigt.
Darin ist 1 der Eisenkern und 2 die Unter- spannungswcklung. Die Oberspannungswick- lung besteht aus zwei Teilwicklungen 3 und 3', die je in zwei Abteilungen 3a, 3b und 3'a, 3'b aufgeteilt sind. 4 und 4' sind die Isolier- mäntel der Teilwicklungen.
Infolge der oben genannten Beziehung zwischen der Lagenisolationsdieke und der Überschlagsspannung erhält man bei glei chen räumlichen Abmessungen und gleicher Windungszahl der Teilwicklungen wesentlich grössere Randüberschlagswege und damit eine wesentlich grössere Sicherheit.
Insulation <B> for </B> multi-layer <B> windings. </B> In the case of insulation for multi-layer windings according to the main patent, the ratio is necessary in order to obtain favorable spatial dimensions and weights
EMI0001.0005
to be kept within certain limits, where l is the length of a winding layer and L is the number of layers.
The decisive factor is the layer voltage UL, which is determined from the following equation if <I> U </I> is the entire voltage of the winding and <I> p </I> is the proportionality factor:
EMI0001.0010
If you make L large in order to obtain a small layer tension, you get a short, thick coil with a large spread. On the other hand, if a small number of layers is selected, the layer tension becomes too high. A high layer tension requires a large rollover path between: the layers.
Since the flashover voltage increases proportionally d0.4 when d is the thickness of the layer insulation, a high layer voltage requires a great deal of layer insulation.
According to the present invention, a substantial improvement is possible in that the partial windings are each divided into two or more divisions that are connected in series with one another, as shown schematically in the figure relating to an embodiment of the invention.
1 is the iron core and 2 is the low voltage winding. The high-voltage winding consists of two partial windings 3 and 3 'which are each divided into two compartments 3a, 3b and 3'a, 3'b. 4 and 4 'are the insulating sheaths of the partial windings.
As a result of the above-mentioned relationship between the layer insulation thickness and the flashover voltage, with the same spatial dimensions and the same number of turns of the partial windings, significantly larger edge flashover paths and thus significantly greater safety are obtained.
Claims (1)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH270165T | 1948-11-29 | ||
| CH255813T | 1948-11-29 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CH270165A true CH270165A (en) | 1950-08-15 |
Family
ID=25729926
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CH270165D CH270165A (en) | 1948-11-29 | 1948-11-29 | Insulation for multi-layer windings. |
Country Status (1)
| Country | Link |
|---|---|
| CH (1) | CH270165A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1182340B (en) * | 1961-05-26 | 1964-11-26 | Messwandler Bau Gmbh | Transformer for high and very high voltages, especially test transformer or voltage converter in insulating jacket construction |
-
1948
- 1948-11-29 CH CH270165D patent/CH270165A/en unknown
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1182340B (en) * | 1961-05-26 | 1964-11-26 | Messwandler Bau Gmbh | Transformer for high and very high voltages, especially test transformer or voltage converter in insulating jacket construction |
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