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DE1802787U - CURRENT TRANSFORMER WITH SMALL NOMINAL OVERCURRENT CURRENT. - Google Patents

CURRENT TRANSFORMER WITH SMALL NOMINAL OVERCURRENT CURRENT.

Info

Publication number
DE1802787U
DE1802787U DE1958S0028684 DES0028684U DE1802787U DE 1802787 U DE1802787 U DE 1802787U DE 1958S0028684 DE1958S0028684 DE 1958S0028684 DE S0028684 U DES0028684 U DE S0028684U DE 1802787 U DE1802787 U DE 1802787U
Authority
DE
Germany
Prior art keywords
current
overcurrent
small nominal
small
current transformer
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
DE1958S0028684
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.)
Siemens Corp
Original Assignee
Siemens Corp
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 Siemens Corp filed Critical Siemens Corp
Priority to DE1958S0028684 priority Critical patent/DE1802787U/en
Publication of DE1802787U publication Critical patent/DE1802787U/en
Expired legal-status Critical Current

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  • Transformers For Measuring Instruments (AREA)
  • Emergency Protection Circuit Devices (AREA)

Description

Stroawandler alt kleiner lennUberstroasiffer --,--1--,--,--- u. bei Einhal tung beatluter Fehlergrensen eine kleine liennflbe : r- stronziffer zu erzielen, hat mm bisher für die Stro » andlerkerne Nickeleinenkerne oder Nischkerne aus St sen md ck*l en verwent, oder ? && hat bei VerwenMng voa SÜ eisea@men durch Fortlassen en etat. Teilt. der Ienbleche in eine. Iernlchenkel eineQuersohnittaverringerung vorgenomten. s t<ure Siel$is$n MMp&rn bew M sch aas äay Qa. er- schaittsveradneyang ergeb$ng$ vyhältaiaaäßig groSe Kyarousn berabzusatig « t Ist gemäß der Neuerung der Kern dea Stroawandlers alt einen lathaus versehen, der durch Herstellen eines senkrecht rat gAB d er xdl*rg zurRichtung des espettechen Feldes liegenden Loches mit krals- förmigem Querschnitt entstanden ist ; &erdez sind riarwi&klung undSaMsd&rwieklung xweck$ stglir KoppiMBg koBentrissh auf den mit Isthaus voriiehenen ler » chenkel, rorzugeweise unter hin- reichenderUberdecbng des Iathaua. angeordnet. Stroawandler old small lennUberstroasiffer --,--1--,--,--- and if ventilated error limits are adhered to, a small liennflbe: r- Up to now, mm has been used for the current cores to achieve the current number Nickel cores or niche cores made from stencils used, right? && has eisea @ men at VerwenMng voa SÜ by omitting en etat. Splits. the iron sheet into one. Leaning thighs made a cross-sonitta reduction. s t <ure Siel $ is $ n MMp & rn bew M sch aas äay Qa. he- Schaittsveradneyang results in $ vyhaltaiaaig large Kyarousn In addition, according to the innovation, it is the core of the Stroawander old a lathaus provided by making a vertical advice gave the xdl * rg to the direction of the espettechen field lying hole with krals- shaped cross-section was created; & erdez are riarwi & klung undSaMsd & rwieklung xweck $ stglir KoppiMBg koBentrissh on the lark's thighs, which are in front of the Isthaus, sometimes under Extensive coverage of the Iathaua. arranged.

In der Zeichnung ist ein Ausführungsbeispiel eines Stromwandlerkernes gemäß der Neuerung dargestellt. Dieser Kern ist aus kornorientierten Transformatorblechen mit Diagonalschnitt geschichtet.The drawing shows an embodiment of a current transformer core shown according to the innovation. This core is made of grain-oriented transformer sheets layered with diagonal cut.

Der vordere und hintere Kernschenkel ist doppelt so breit wie der linke und rechte lernschenkel, um in allen Schenkeln den gleichen Eisenquerschnitt zu erhalten. In dem vorderen, doppelt so breiten Kernschenkel ist ein Isthaus durch Herstellen eines senkrecht zur magnetischen Feldrichtung liegenden Loches 1 von kreisförmigem Querschnitt vorgesehen. Durch diese Isthmusausführung ist der Anteil der Isthmuslänge an der gesamten Eisenweglänge verhältnis- mäßig klein, d. h. das Xemvolmaen und damit die lernhhe verrin- gert sich gegenüber den bekannten Siliziumeisenkernen mit Querschnittsverringerung, da sich ait Abnahme der Isthmuslänge ein Anstieg der Permeabilität und demzufolge der spezifischen Leistung einstellt. Die Primärwicklung 2 und die Sekundärwicklung 3 sind zwecks bestmäglicher Kopplung konzentrisch, und zwar auf dem den Isthmus enthaltenden Kernschenkel angeordnet. Hierbei überdecken die Wicklungen den Isthaus hinreichend. Damit wird der Streufluß klein gehalten und damit die nach der Magnetisierungskurve errechnete Nennüberstromziffer gewährleistet.The anterior and posterior core leg is twice as wide as the left and right learning leg in order to obtain the same iron cross-section in all legs. In the front core leg, which is twice as wide, an actual house is provided by producing a hole 1 of circular cross-section that is perpendicular to the magnetic field direction. Due to this isthmus design, the proportion of the isthmus length in the total iron path length is moderately small, i.e. the Xemvolmaen and thus the learning height Compared to the known silicon iron cores with a reduced cross-section, as the isthmus length decreases, there is an increase in permeability and consequently in specific power. For the best possible coupling, the primary winding 2 and the secondary winding 3 are concentrically arranged on the core leg containing the isthmus. The windings cover the actual house sufficiently. This keeps the leakage flux small and guarantees the nominal overcurrent figure calculated from the magnetization curve.

Claims (1)

Schutzanspruch StroKwandler ait kleiner Kennuberstroaziffer, dadurch gekennzeich- nest, daß ein KemscheRkel des Stroawandlers alt eine Isthaus ver-
sehen ist, der durch herstellen eines senkrecht zur Richtung des magnetischen Feldes liegenden Loches mit kreisförmigem Querschnitt entstanden ist, und daß Primär- und Sekundärwicklung konzentrisch auf den mit Isthaus versehenen Kernschenkel, vorzugsweise unter hinreichender Überdeckung des Isthmus, angeordnet sind.
Claim to protection StroK converter with a small Kennuberstroa number, characterized by nest that a KemscheRkel of the Stroawander old an actual house
can be seen, which was created by making a hole perpendicular to the direction of the magnetic field with a circular cross-section, and that the primary and secondary windings are arranged concentrically on the core leg provided with isthaus, preferably with sufficient coverage of the isthmus.
DE1958S0028684 1958-10-24 1958-10-24 CURRENT TRANSFORMER WITH SMALL NOMINAL OVERCURRENT CURRENT. Expired DE1802787U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE1958S0028684 DE1802787U (en) 1958-10-24 1958-10-24 CURRENT TRANSFORMER WITH SMALL NOMINAL OVERCURRENT CURRENT.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1958S0028684 DE1802787U (en) 1958-10-24 1958-10-24 CURRENT TRANSFORMER WITH SMALL NOMINAL OVERCURRENT CURRENT.

Publications (1)

Publication Number Publication Date
DE1802787U true DE1802787U (en) 1959-12-24

Family

ID=32889023

Family Applications (1)

Application Number Title Priority Date Filing Date
DE1958S0028684 Expired DE1802787U (en) 1958-10-24 1958-10-24 CURRENT TRANSFORMER WITH SMALL NOMINAL OVERCURRENT CURRENT.

Country Status (1)

Country Link
DE (1) DE1802787U (en)

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