DE364907C - Winding part designed as a protective coil, especially for electrical transformers - Google Patents
Winding part designed as a protective coil, especially for electrical transformersInfo
- Publication number
- DE364907C DE364907C DEB97030D DEB0097030D DE364907C DE 364907 C DE364907 C DE 364907C DE B97030 D DEB97030 D DE B97030D DE B0097030 D DEB0097030 D DE B0097030D DE 364907 C DE364907 C DE 364907C
- Authority
- DE
- Germany
- Prior art keywords
- coil
- protective
- protective coil
- winding part
- part designed
- 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
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/34—Special means for preventing or reducing unwanted electric or magnetic effects, e.g. no-load losses, reactive currents, harmonics, oscillations, leakage fields
- H01F27/343—Preventing or reducing surge voltages; oscillations
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Insulating Of Coils (AREA)
Description
Als Schutzspule ausgebildeter Wicklungsteil, insbesondere für elektrische Transformatoren. Bei großen Transformatoren pflegt man an den durch Wanderwellen besonders gefährdeten Stellen die Wicklung als sogenannte Schutzspulen auszubilden, die leicht ausgewechselt werden können und besonders in ihren Eingangswindungen mit Rücksicht auf die Beanspruchung durch die Wanderwellen eine verstärkte Isolierung von Windung zu Windung aufweisen. Diese verstärkte Isolierung hat nun aber zur Folge, daß die elektrostatischen Induktionslinien sich in der Nähe des Leiters stauen, wodurch an diesen Stellen Zersetzungserscheinungen und gegebenenfalls auch Überschläge in dem Öl herbeigeführt werden. Dieser Übelstand läßt sich erfindungsgemäß dadurch beseitigen, daß die am- höchsten isolierten Spulenteile zwischen anderen weniger stark isolierten Spulenteilen eingeschlossen werden.Winding part designed as a protective coil, especially for electrical ones Transformers. In the case of large transformers, one takes care of the traveling waves to design the winding as so-called protective coils at particularly endangered points, which can be easily changed and especially in their input coils In consideration of the stress caused by the traveling waves, reinforced insulation exhibit from turn to turn. However, this increased insulation now has the consequence that the electrostatic induction lines accumulate near the conductor, whereby at these points decomposition phenomena and possibly also flashovers in which oil are brought about. According to the invention, this drawback can be eliminated eliminate that the most highly isolated coil parts between others less heavily insulated coil parts are included.
In der Zeichnung ist ein Ausführungsbeispiel veranschaulicht. Die Schutzspule .besteht danach aus .den drei Teilen a1, a., cri, die in der aufgeführten Reihenfolge hintereinander geschaltet sind. Der Spwlenteil a, ist dabei mit seinem freien Ende an einen metallischen Schutzring b, der Spulenteil a3 an die nächste Hochspannungsspule c des Transformators angeschlossen. Von der Schutzspule ist dann der Teil a, am höchsten isoliert. Dieser Teil wird zwischen die übrigen Teile a., a3, b, c ge- legt. Zu diesem Zwecke sind die Teile a2, ca3, b, c derart angeordnet, daß die Schutzspulenteile a., a. einen Ringraum bilden, der auf der einen Seite durch die Hochspannungsspule c, auf der anderen Seite durch den Schutzring b abgedeckt ist.An exemplary embodiment is illustrated in the drawing. The protective coil then consists of the three parts a1, a., Cri, which are connected in series in the order listed. The coil part a is connected with its free end to a metallic protective ring b, the coil part a3 to the next high-voltage coil c of the transformer. Part a is then most insulated from the protective coil. This part is placed between the remaining parts a., A3, b, c . For this purpose, the parts a2, ca3, b, c are arranged such that the protective coil parts a., A. Form an annular space which is covered on the one hand by the high-voltage coil c and on the other hand by the protective ring b.
Der höchstisolierte Spulenteil a,. ist danach vollkommen von Spulenteilen umschlossen, die sich auf annähernd gleichem Potential befinden, und die aus der verstärkten Isolierung sich ergebenden ungünstigen Erscheinungen können infolgedessen nicht mehr auftreten. Zugleich hat die angegebene Anordnung aber auch noch den Vorteil, daß eine auftreffende Wanderwelle durch die Kapazität von Windung zu Windung im Sinne einer Abflachung der steilen Stirn deformiert wird.The highly insulated coil part a ,. is then completely from coil parts enclosed, which are at approximately the same potential, and those from the As a result, increased insulation can result in unfavorable phenomena no longer occur. At the same time, the specified arrangement also has the advantage that an impinging traveling wave through the capacity from turn to turn in the Meaning a flattening of the steep forehead is deformed.
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEB97030D DE364907C (en) | Winding part designed as a protective coil, especially for electrical transformers |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEB97030D DE364907C (en) | Winding part designed as a protective coil, especially for electrical transformers |
Publications (1)
Publication Number | Publication Date |
---|---|
DE364907C true DE364907C (en) | 1922-12-06 |
Family
ID=6989057
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DEB97030D Expired DE364907C (en) | Winding part designed as a protective coil, especially for electrical transformers |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE364907C (en) |
-
0
- DE DEB97030D patent/DE364907C/en not_active Expired
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