AT8683B - Circuit arrangement for transformers for feeding a three-wire system from a two-wire network. - Google Patents

Circuit arrangement for transformers for feeding a three-wire system from a two-wire network.

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Publication number
AT8683B
AT8683B AT8683DA AT8683B AT 8683 B AT8683 B AT 8683B AT 8683D A AT8683D A AT 8683DA AT 8683 B AT8683 B AT 8683B
Authority
AT
Austria
Prior art keywords
wire
transformers
feeding
circuit arrangement
wire system
Prior art date
Application number
Other languages
German (de)
Original Assignee
Actien Ges Elek Citaetswerke V
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
Priority claimed from DE1899108776D external-priority patent/DE108776C/de
Application filed by Actien Ges Elek Citaetswerke V filed Critical Actien Ges Elek Citaetswerke V
Application granted granted Critical
Publication of AT8683B publication Critical patent/AT8683B/en

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Description

  

   <Desc/Clms Page number 1> 
 



  Schaltungsanordnung für Transformatoren zur Speisung einer Dreileiteranlage aus einem Zweileiternetz. 



   Zum Übergang vom Zweileiter- auf Dreileitersystem in Wechselstromanlagen sind Transformatoren erforderlich, bei denen der mittelleiter in der Mitte der   Secundärspule   abzweigt. 



   Bei schwankender Belastung ist diese Anordnung nicht mehr anwendbar. Es wird vielmehr ein Transformator verwendet, der zwei Primär- und zwei Secundärspulen enthält. die auf verschiedene Theile eines Kernes gewickelt sind. Aber auch diese Anordnung ist nicht mehr   zweckmässig,   falls in beiden Zweigen des Dreileiternetzes Ungleichheiten in der Belastung auftreten. In diesem Falle würde durch die   ungünstig beeinflussten Inductions-   verhältnisse eine Vermehrung der Streuung verursacht werden, die einen unzulässigen Spannungsabfall in dem schwächer belasteten Zweige des   Dreileitcrnetzes   hervorrufen müsste. 



   Ein   bekanntes Mittel   zur Vermeidung dieses   Übelstandes   ist die Theilung jeder   Secnndärspu1e   in zwei Spulen und die Schaltung derselben in. der Weise, dass die   Secundär-   spulen eines Droileiterzweiges gleichzeitig von beiden   Primärspulen beeinnusst   werden. 



   Den Gegenstand der vorliegenden Erfindung bildet ein anderes Mittel zur Überwindung der erwähnten Schwierigkeit. 



   Der zu verwendende Transformatorkern erhält ein magnetisch leitendes Zwischenstück a. Dadurch wird der Transformator in zwei Hälften getheilt; das magnetische Zwischenstück gehört beiden Hälften an. Es entstehen vier Kerntheile b c d und e. auf 
 EMI1.1 
 
Ist die Belastung in beiden Zweigen des Dreileiternetztes gleich, so entsteht kein Kraftlinienfluss in dem Zwischenstück a, da die Flüsse einander entgegenwirken und sich aufheben; beim Eintreten von Ungleichheiten in der Belastung jedoch bewirkt das 
 EMI1.2 
   einflussungen   der   Induction der   Spulen des einen Zweiges durch die anderen können nicht   stattfinden. 

**WARNUNG** Ende DESC Feld kannt Anfang CLMS uberlappen**.



   <Desc / Clms Page number 1>
 



  Circuit arrangement for transformers for feeding a three-wire system from a two-wire network.



   For the transition from a two-wire to a three-wire system in AC systems, transformers are required in which the central conductor branches off in the middle of the secondary coil.



   If the load fluctuates, this arrangement can no longer be used. Rather, a transformer is used which contains two primary and two secondary coils. which are wound on different parts of a core. But even this arrangement is no longer useful if inequalities in the load occur in both branches of the three-wire network. In this case, the unfavorably influenced induction conditions would cause an increase in the scatter, which would have to cause an impermissible voltage drop in the less heavily loaded branches of the three-wire network.



   A well-known means of avoiding this inconvenience is to divide each secondary coil into two coils and to connect them in such a way that the secondary coils of a drop wire branch are influenced simultaneously by both primary coils.



   The subject of the present invention is another means of overcoming the aforementioned difficulty.



   The transformer core to be used receives a magnetically conductive intermediate piece a. This divides the transformer in two; the magnetic adapter belongs to both halves. There are four core parts b c d and e. on
 EMI1.1
 
If the load is the same in both branches of the three-wire network, there is no flow of lines of force in the intermediate piece a, since the flows counteract and cancel each other; however, when inequalities occur in the load, this has the effect
 EMI1.2
   The induction of the coils of one branch cannot be influenced by the other.

** WARNING ** End of DESC field may overlap beginning of CLMS **.

 

Claims (1)

PATENT-ANSPRUCH: Schaltungseinrichtung für Kerntransformatoren mit magnetischem Zwischenstück zum Zwecke der Speisung einer secundären Dreileiteranlage aus einem primären Zweileiternetze, dadurch gekennzeichnet, dass auf den zu beiden Seiten des Zwischenstückes be- findlichen Hälften des Transformator-Kernes primäre und secundäre Spulen angeordnet sind. wobei das Zwischenstück selbst keine Bewicklung trägt und wobei die zu beiden Seiten des Mittelstückes angeordneten Spulensysteme je einem Stromzweige der secul1dären Dreileiteranlagc entsprechen und das Mittelstück dos Kernes nur dann von Kraftlinien EMI1.3 **WARNUNG** Ende CLMS Feld Kannt Anfang DESC uberlappen**. PATENT CLAIM: Circuit device for core transformers with a magnetic intermediate piece for the purpose of supplying a secondary three-wire system from a primary two-wire network, characterized in that primary and secondary coils are arranged on the halves of the transformer core on both sides of the intermediate piece. the intermediate piece itself does not have any winding and the coil systems arranged on both sides of the central piece each correspond to a branch of the secondary three-wire system and the central piece of the core only has lines of force EMI1.3 ** WARNING ** End of CLMS field may overlap beginning of DESC **.
AT8683D 1899-07-06 1900-03-05 Circuit arrangement for transformers for feeding a three-wire system from a two-wire network. AT8683B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1899108776D DE108776C (en) 1899-07-06

Publications (1)

Publication Number Publication Date
AT8683B true AT8683B (en) 1902-08-11

Family

ID=5651478

Family Applications (1)

Application Number Title Priority Date Filing Date
AT8683D AT8683B (en) 1899-07-06 1900-03-05 Circuit arrangement for transformers for feeding a three-wire system from a two-wire network.

Country Status (1)

Country Link
AT (1) AT8683B (en)

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