CH223400A - Slot winding insulation for electrical machines and apparatus. - Google Patents
Slot winding insulation for electrical machines and apparatus.Info
- Publication number
- CH223400A CH223400A CH223400DA CH223400A CH 223400 A CH223400 A CH 223400A CH 223400D A CH223400D A CH 223400DA CH 223400 A CH223400 A CH 223400A
- Authority
- CH
- Switzerland
- Prior art keywords
- slot
- winding insulation
- electrical machines
- glass
- insulation
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K3/00—Details of windings
- H02K3/32—Windings characterised by the shape, form or construction of the insulation
- H02K3/34—Windings characterised by the shape, form or construction of the insulation between conductors or between conductor and core, e.g. slot insulation
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Insulation, Fastening Of Motor, Generator Windings (AREA)
Description
Nutwicklungsisolation für elektrische Maschinen und Apparate. Es ist bekannt, die Nutschenkel der Wicklungen von Hochspannungsmaschinen zu asphaltieren oder mit Isolierbändern zu umwickeln. Es wurde auch schon, vorgeschla gen, auf den Nutschenkel zwecks Isolation ein massives Glasrohr aufzuschieben. Da das Glas aber nur geringe Wandstärke haben ,darf und brüchig ist, entsteht bei :dieser Iso lationsart viel Ausschuss. Auch besteht die Gefahr, dass beim Transport oder während des Betriebes das Glasrohr bricht. Auch bei der Erfindung wird von Glas für die Isola tion Gebrauch gemacht, jedoch werden :die Mängel der obengenannten Glasisolation ver mieden.
Erfindungsgemäss wird um den Nuten,- sehenkel eine mit Bindemittel versehene Glasfolie herumgelegt. Die Glasfolie kann unter Zuhilfenahme eines Trägerstoffes, wie Papier oder Gewebe herumgelegt, sie kann auch unter Anwendung von Hitze und Druck um den Nutenschenkel herumgebügelt wer- den.
Wird Wert auf thermische Festigkeit der Isolation gelegt, dann verwendet man als Tragstoff mit Vorteil anorganisches Papier oder Glasgewebe und ein möglichst hitze- beständiges, organisches Bindemittel, z. B. Kunstharz. Statt dessen kann aber auch ein anorganisches Bindemittel benützt werden.
Die Erfindung soll an Hand des in den Fig. 1 und 2 dargestellten Ausführungsbei spiels näher erläutert werden.
Fig. 1 zeigt den Nutschenkel einer Maschinenwicklung 1 mit der aufgebügelten Isolation 2. Diese Isolation besteht, wie Fig. 2 zeigt, aus einer in mehreren Windun gen herumgelegten Papierbahn 3 mit auf geklebten Glasfolienschichten 4.
Die Erfindung bietet den Vorteil, dass aus :dem heimischen Glas eine hochwertige, biegsame und sich den Nutschenkeln satt an- schmiegende, mikanitähnliche Isolation her stellbar ist, die auch grosse thermische Festigkeit hat.
Slot winding insulation for electrical machines and apparatus. It is known to asphalt the slot legs of the windings of high-voltage machines or to wrap them with insulating tape. It has also been suggested that a solid glass tube be pushed onto the groove leg for insulation. Since the glass has only a small wall thickness, is allowed to and is brittle, a lot of waste occurs with this type of insulation. There is also the risk that the glass tube will break during transport or operation. In the invention, too, use is made of glass for the insulation, but: the shortcomings of the above-mentioned glass insulation are avoided.
According to the invention, a glass film provided with a binding agent is placed around the grooves. The glass film can be laid around with the aid of a carrier material such as paper or fabric, it can also be ironed around the groove leg using heat and pressure.
If emphasis is placed on the thermal stability of the insulation, it is advantageous to use inorganic paper or glass fabric and an organic binder that is as heat-resistant as possible, e.g. B. synthetic resin. Instead, however, an inorganic binder can also be used.
The invention will be explained in more detail with reference to the game Ausführungsbei shown in Figs.
FIG. 1 shows the slot leg of a machine winding 1 with the ironed-on insulation 2. This insulation consists, as FIG. 2 shows, of a paper web 3 laid around in several windings with glass film layers 4 glued to it.
The invention offers the advantage that: the domestic glass can be used to produce high-quality, flexible insulation that fits snugly to the groove legs and is similar to micanite, which also has great thermal stability.
Claims (1)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE223400X | 1941-01-23 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CH223400A true CH223400A (en) | 1942-09-15 |
Family
ID=5850310
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CH223400D CH223400A (en) | 1941-01-23 | 1942-01-20 | Slot winding insulation for electrical machines and apparatus. |
Country Status (1)
| Country | Link |
|---|---|
| CH (1) | CH223400A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1019751B (en) * | 1954-03-26 | 1957-11-21 | Licentia Gmbh | Groove lining for electric motors |
| DE1054157B (en) * | 1953-12-15 | 1959-04-02 | Licentia Gmbh | Micanite insulating sleeves for turbo-generators and processes for their manufacture |
-
1942
- 1942-01-20 CH CH223400D patent/CH223400A/en unknown
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1054157B (en) * | 1953-12-15 | 1959-04-02 | Licentia Gmbh | Micanite insulating sleeves for turbo-generators and processes for their manufacture |
| DE1019751B (en) * | 1954-03-26 | 1957-11-21 | Licentia Gmbh | Groove lining for electric motors |
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