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AT205589B - Arrangement for preventing discharges in the event of surge voltage along the high-voltage winding of a transformer made up of disc coils - Google Patents

Arrangement for preventing discharges in the event of surge voltage along the high-voltage winding of a transformer made up of disc coils

Info

Publication number
AT205589B
AT205589B AT657756A AT657756A AT205589B AT 205589 B AT205589 B AT 205589B AT 657756 A AT657756 A AT 657756A AT 657756 A AT657756 A AT 657756A AT 205589 B AT205589 B AT 205589B
Authority
AT
Austria
Prior art keywords
voltage winding
arrangement
event
voltage
disc coils
Prior art date
Application number
AT657756A
Other languages
German (de)
Original Assignee
Bbc Brown Boveri & Cie
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Bbc Brown Boveri & Cie filed Critical Bbc Brown Boveri & Cie
Application granted granted Critical
Publication of AT205589B publication Critical patent/AT205589B/en

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  • Coils Of Transformers For General Uses (AREA)

Description

  

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   Anordnung zur Verhütung von Entladungen bei Stossspannung längs der aus Scheibenspulen aufgebauten Hochspannungswicklung eines Transformators 
 EMI1.1 
 

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 diesemIn der Zeichnung ist   ein Ausführungsbeispiel   der Erfindung schematisch im Schnitt durch einen Teil der Wicklungen eines   Hochspannungstransformalors   mit doppelt-konzentrischer Wicklungsanordnung gezeigt. 



   In der Figur ist mit 1 die der Kernsäule 2 des Eisengestelles zunächst angeordnete zylindrische Unterspannungswicklung bezeichnet. Die Oberspannungswicklung 3, die konzentrisch zur Unterspannungswicklung liegt, ist aus Doppelscheibenspulen aufgebaut, wobei je zwei benachbarte Scheibenspulen durch eine elektrische Verbindung zu einer Doppelscheibenspule zusammengefasst werden. Zwischen der äusseren Unterspannungswicklung 10 und der Hochspannungswicklung 3 liegt die feste Isolation 50. Ferner sind auf beiden Seitenflächen der Hochspannungswicklung 3 die Winkelring 6 vorgesehen, die sichin axialer Richtung über je zwei Doppelscheibenspulen erstrecken und sich teilweise überlappen.

   Durch diese Abschirmung der Kanten der innersten und äussersten Windungen der einzelnen Spulenscheiben wird eine optimale Wirkung bezüglich der Unterbrechung des Gleitweges für die Vorentladungen erreicht. 



   Die Unterbrechung des Gleitweges braucht nicht unbedingt nach jeder Doppelscheibenspule zu erfolgen. Es genügt unter Umständen, wenn nur rach jeder zweiten Doppelscheibenspule ein Winkelring vorgesehen wird. Im allgemeinen genügt es, wenn nur ein Teil der Hochspannungswicklung mit Winkelringen ausgerüstet wird. Die Winkelringe selbst werden aus irgendeinem bekannten festen Isolierstoff her- 
 EMI2.1 
 u.PATENTANSPRÜCHE : 
1.

   Anordnung zur Verhütung von Entladungen bei Stossspannung längs der aus Scheibenspulen aufgebauten Hochspannungswicklung eines Transformators mit konzentrischen Wicklungen und fester Isolation zwischen der Hoch- und Niederspannungswicklung, dadurch gekennzeichnet, dass mindestens ein Teil der Hochspannungswicklung mit zwischen dieser und der festen Hauptisolation eingebauten Winkelringen versehen ist, die auf mindestens einer Seitenfläche der Hochspannungswicklung so angeordnet sind und sich in axialer Richtung teilweise überlappen, dass sie Entladungen auf den Kanten mit maximaler Feldstärke längs der Wicklung in Richtung vom Eingang weg dadurch verhindern, dass sie den Gleitweg nach mindestens jeder zweiten Doppelscheibenspule der Hochspannungswicklung unterbrechen.



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   Arrangement to prevent discharges in the event of surge voltage along the high-voltage winding of a transformer made up of disc coils
 EMI1.1
 

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 In the drawing, an embodiment of the invention is shown schematically in section through part of the windings of a high-voltage transformer with a double-concentric winding arrangement.



   In the figure, 1 denotes the cylindrical low-voltage winding initially arranged in the core column 2 of the iron frame. The high-voltage winding 3, which is concentric to the low-voltage winding, is made up of double disc coils, with two adjacent disc coils being combined to form a double disc coil by an electrical connection. The fixed insulation 50 is located between the outer low-voltage winding 10 and the high-voltage winding 3. Furthermore, the angular rings 6 are provided on both side surfaces of the high-voltage winding 3, each extending in the axial direction over two double-disk coils and partially overlapping.

   This shielding of the edges of the innermost and outermost turns of the individual coil discs achieves an optimal effect with regard to the interruption of the glide path for the pre-discharges.



   The glide path does not necessarily have to be interrupted after each double disc coil. Under certain circumstances it is sufficient if an angle ring is provided only after every second double disc coil. In general, it is sufficient if only part of the high-voltage winding is equipped with angle rings. The angle rings themselves are made of some known solid insulating material.
 EMI2.1
 & PATENT CLAIMS:
1.

   Arrangement for preventing discharges in the event of surge voltage along the high-voltage winding of a transformer made up of disc coils with concentric windings and solid insulation between the high and low-voltage winding, characterized in that at least part of the high-voltage winding is provided with angle rings built between this and the fixed main insulation, which are arranged on at least one side surface of the high-voltage winding and partially overlap in the axial direction in such a way that they prevent discharges on the edges with maximum field strength along the winding in the direction away from the entrance by interrupting the sliding path after at least every second double-disc coil of the high-voltage winding.

 

Claims (1)

2. Anordnung nach Anspruch 1, dadurch gekennzeichnet, dass jeder Winkeliing sich in axialer Richtung über zwei Doppelscheibenspulen der Hochspannungswicklung erstreckt. 2. Arrangement according to claim 1, characterized in that each Winkeliing extends in the axial direction over two double disc coils of the high-voltage winding.
AT657756A 1955-11-22 1956-11-03 Arrangement for preventing discharges in the event of surge voltage along the high-voltage winding of a transformer made up of disc coils AT205589B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH205589X 1955-11-22

Publications (1)

Publication Number Publication Date
AT205589B true AT205589B (en) 1959-10-10

Family

ID=4444690

Family Applications (1)

Application Number Title Priority Date Filing Date
AT657756A AT205589B (en) 1955-11-22 1956-11-03 Arrangement for preventing discharges in the event of surge voltage along the high-voltage winding of a transformer made up of disc coils

Country Status (1)

Country Link
AT (1) AT205589B (en)

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