CH84821A - Process for uninterrupted step switching on transformers using a double reactor. - Google Patents
Process for uninterrupted step switching on transformers using a double reactor.Info
- Publication number
- CH84821A CH84821A CH84821DA CH84821A CH 84821 A CH84821 A CH 84821A CH 84821D A CH84821D A CH 84821DA CH 84821 A CH84821 A CH 84821A
- Authority
- CH
- Switzerland
- Prior art keywords
- transformers
- taps
- step switching
- double
- uninterrupted
- Prior art date
Links
- 230000000694 effects Effects 0.000 description 1
Landscapes
- Coils Of Transformers For General Uses (AREA)
Description
Verfahren zur unterbrechungslosen Stufenschaltung an Transformatoren mittelst Doppeldrosselspule. Es ist bekannt, bei Stufentransformatoren zum unterbreehungslosen Überschalten von einer Stufe zur nächsten eine Doppeldrossel spule zu verwenden, d. h. eine solche, deren Enden an zwei benachbarte Anzapfungen des Transformators angeschlossen werden können, während derVerbrauchsstrom einerAnzapfurig in der Mitte der Drosselspule entnommen wird.
Die Zahl der Schaltstufen ist darin gleich der um eins verminderten Zahl der Transformatoranzapfungen. Lm die Zahl der Schaltstufen ohne Vermehrung der An zapfungen auf das Doppelte zu vermehren, hat man vorgeschlagen, die Enden der Doppel drosselspulen nicht nur wie bisher an zwei benachbarte Transformatoranzapfungen, son dern ausserdem auch beide jeweils an ein und dieselbe Anzapfung anzuschliessen.
Die gleiche Wirkung wird durch das Ver fahren nach der Erfindung erzielt. Darnach werden die Enden der Doppeldrosselspule nicht nur an zwei benachbarte Anzapfungen des Stufentransformators, sondern jeweils ausserdem an zwei Anzapfungen angeschlossen. welche nicht benachbart, sondern durch wenigstens eine dazwischenliegende An zapfung getrennt sind.
In der Zeichnung ist eine Transformator phase mit fünf Anzapfungen dargestellt. Irt der I. Schaltstufe, Fig. 1, sind die Enden a und b der Doppeldrosselspule an die An- zapfungen 1 und 2 gelegt. Die zweite Stufe II, Fig. 2, wird durch Umschalten des Spulen endes b von der Anzapfung 2 auf Anzapfung 3 erzielt.
U n) Schaltstufe III, Fig. 3, zu er halten, wird das Ende a an die Anzapfung 2 gelegt. Für die IV. Stufe, entsprechend Fig. 4, schliesst man das Ende b der Spule an die Transformatoranzapfung 4 an, usf.
Diese Schaltungsweise hat gegenüber der oben erwähnten bekannten, bei der die Spulen enden unter anderem jeweils an die gleiche Anzapfung gelegt werden, den Vorteil, dass die Anzapfungen niemals mehr als den halben Netzstrom führen, während sie bei dem be kannten Verfahren abwechselnd den halben und den vollen Netzstrom führen und dem- entsprechend stärker zu bemessen sind.
Process for uninterrupted step switching on transformers using a double reactor. It is known to use a double choke coil in step transformers for uninterrupted switching from one stage to the next, d. H. one whose ends can be connected to two adjacent taps of the transformer, while the consumption current is taken from a tap in the middle of the reactor.
The number of switching stages is equal to the number of transformer taps reduced by one. In order to double the number of switching stages without increasing the number of taps, it has been proposed to connect the ends of the double choke coils not only to two adjacent transformer taps, but also both to one and the same tap.
The same effect is achieved by the method according to the invention. According to this, the ends of the double choke coil are not only connected to two adjacent taps of the step transformer, but also to two taps. which are not adjacent, but separated by at least one intermediate tap.
In the drawing, a transformer phase is shown with five taps. In the first switching stage, FIG. 1, ends a and b of the double inductor are connected to taps 1 and 2. The second stage II, Fig. 2, is achieved by switching the coil end b from the tap 2 to 3 tap.
U n) switching stage III, Fig. 3, to keep it, the end a is placed on the tap 2. For the fourth stage, according to FIG. 4, the end b of the coil is connected to the transformer tap 4, and so on.
This circuit has the advantage that the taps never carry more than half the mains current, while in the known method they alternately half and the other carry full mains current and must therefore be rated higher.
Claims (1)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE84821X | 1918-10-07 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CH84821A true CH84821A (en) | 1920-04-16 |
Family
ID=5640559
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CH84821D CH84821A (en) | 1918-10-07 | 1919-10-06 | Process for uninterrupted step switching on transformers using a double reactor. |
Country Status (1)
| Country | Link |
|---|---|
| CH (1) | CH84821A (en) |
-
1919
- 1919-10-06 CH CH84821D patent/CH84821A/en unknown
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