DE456154C - Additional transformer with protective reactance, the field winding of which is protected by a permanently upstream reactance in order to limit its short-circuit current - Google Patents

Additional transformer with protective reactance, the field winding of which is protected by a permanently upstream reactance in order to limit its short-circuit current

Info

Publication number
DE456154C
DE456154C DES64209D DES0064209D DE456154C DE 456154 C DE456154 C DE 456154C DE S64209 D DES64209 D DE S64209D DE S0064209 D DES0064209 D DE S0064209D DE 456154 C DE456154 C DE 456154C
Authority
DE
Germany
Prior art keywords
reactance
short
protected
protective
circuit current
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
Application number
DES64209D
Other languages
German (de)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
VEM Sachsenwerk GmbH
Original Assignee
Sachsenwerk Licht und Kraft AG
Publication date
Priority to DES64209D priority Critical patent/DE456154C/en
Application granted granted Critical
Publication of DE456154C publication Critical patent/DE456154C/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
    • H02H7/04—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for transformers

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Emergency Protection Circuit Devices (AREA)

Description

Gegenstand der Erfindung bildet eine Einrichtung zum Schütze von Zusatztransformatoren, welche die gefährdetsten Apparate in elektrischen Anlagen darstellen, im Falle von Kurzschlüssen.The subject of the invention is a device for protecting additional transformers, which represent the most endangered apparatus in electrical systems, in the case of Short circuits.

Da die Zusatztransformatoren nur Zusatzspannungen von wenigen Prozenten der Netzspannung erzeugen, ist ein Schutz dieser Apparate durch Schutzreaktanzen, welche Spannungsabfälle hervorrufen wurden, die dieWirkung der Zusatztransformatoren zum großen Teil wieder aufheben können, nicht möglich, weshalb man sich in bekannt gewordenen Anordnungen damit begnügte, wenigstens dieBecause the additional transformers only provide additional voltages of a few percent of the mains voltage generate is a protection of this apparatus by protective reactances, which voltage drops causing the effect of the additional transformers can for the most part pick up again, not possible, which is why they contented themselves with it in arrangements that have become known, at least the

empfindliche, dünndrähtige Erregerwicklung dieser Apparate gegen die Kurzschluß Wirkungen zu schützen, indem man lediglich vor diesen Teil des Wandlers eine Reaktanzdrossel legte.sensitive, thin-wire excitation winding of these devices against the short-circuit effects protect by placing a reactance choke in front of this part of the converter only put.

Liegt nun vor dem Zusatzwandler unmittelbar der Haupttransformator, so wird nach der Erfindung vorgeschlagen, als Schutzreaktanz in diesem Falle für die Erregerwicklung die Impedanz des HaupttransformatorsIf the main transformer is now directly in front of the additional converter, then after proposed by the invention as a protective reactance in this case for the excitation winding the impedance of the main transformer

zu benutzen. Zu diesem Zweck wird von der Wicklung des letzteren eine Teilspannung abgenommen und damit die Erregerwicklung des Zusatztransformators gespeist. Die Erregerwicklung kann hierbei, da sie nicht an der vollen Spannung liegt, aus stärkerem Draht. gewickelt werden, ein Umstand, der ihre Widerstandsfähigkeit wesentlich erhöht.to use. For this purpose, a partial voltage is applied from the winding of the latter removed and thus fed the excitation winding of the additional transformer. The excitation winding Since it is not at full voltage, it can be made of stronger wire. be wrapped, a circumstance that their resilience is significantly increased.

Eine Ausführung für die Anwendung der Erfindung zeigt in schematischer Darstellung die Abbildung der Zeichnung. Es sind darin bezeichnet mit α die Zusatz- und mit b die Erregerwicklung des Zusatztransformators, während d die zugehörige Wicklung des Haupttransformators ist.An embodiment for the application of the invention is shown schematically in the illustration of the drawing. It denotes the auxiliary transformer with α and b the field winding of the auxiliary transformer, while d is the associated winding of the main transformer.

Die beschriebene Anordnung ist natürlich in gleicher Weise auf feststehende wie auf drehbare Zusatztransformatoren anwendbar.The arrangement described is of course in the same way on fixed as on rotatable additional transformers applicable.

Claims (1)

Patentanspruch:Claim: Zusatztransformator mit Schutzreaktanz, dessen Erregerwicklung zwecks Begrenzung ihres Kurzschlußstromes durch eine dauernd vorgeschaltete Reaktanz geschützt ist, dadurch gekennzeichnet, daß als Vorschaltreaktanz ein Teil der Wicklung des zugehörigen Haupttransformators benutzt wird.Additional transformer with protective reactance, its excitation winding for the purpose of limitation its short-circuit current is protected by a permanently upstream reactance, characterized in that a part of the winding of the associated main transformer is used as a series reactance.
DES64209D Additional transformer with protective reactance, the field winding of which is protected by a permanently upstream reactance in order to limit its short-circuit current Expired DE456154C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DES64209D DE456154C (en) Additional transformer with protective reactance, the field winding of which is protected by a permanently upstream reactance in order to limit its short-circuit current

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DES64209D DE456154C (en) Additional transformer with protective reactance, the field winding of which is protected by a permanently upstream reactance in order to limit its short-circuit current

Publications (1)

Publication Number Publication Date
DE456154C true DE456154C (en) 1928-02-17

Family

ID=7496992

Family Applications (1)

Application Number Title Priority Date Filing Date
DES64209D Expired DE456154C (en) Additional transformer with protective reactance, the field winding of which is protected by a permanently upstream reactance in order to limit its short-circuit current

Country Status (1)

Country Link
DE (1) DE456154C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20040194212A1 (en) * 2001-07-06 2004-10-07 Fanuzzi John M. Multipurpose treatment table

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20040194212A1 (en) * 2001-07-06 2004-10-07 Fanuzzi John M. Multipurpose treatment table

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