AT75034B - Device for compensating the no-load current in coils with iron cores, in particular in measuring transformers or relays. - Google Patents

Device for compensating the no-load current in coils with iron cores, in particular in measuring transformers or relays.

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Publication number
AT75034B
AT75034B AT75034DA AT75034B AT 75034 B AT75034 B AT 75034B AT 75034D A AT75034D A AT 75034DA AT 75034 B AT75034 B AT 75034B
Authority
AT
Austria
Prior art keywords
coils
relays
compensating
load current
iron cores
Prior art date
Application number
Other languages
German (de)
Original Assignee
Siemens Ag
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 Ag filed Critical Siemens Ag
Application granted granted Critical
Publication of AT75034B publication Critical patent/AT75034B/en

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  • Transformers For Measuring Instruments (AREA)

Description

  

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   Wicklungsatrome   im Gefolge. Diese Erscheinung ist bei der Wahl der Anzahl der Wicklunglagen jeder Spule und der Zahl der   Einzelepulen   sowie des   Querschnittes des Metallbandea   entsprechend zu berücksichtigen. 



   Zwischen die Verbindungen der Einzelspulen können Widerstände eingeschaltet werden, 
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 durch die   Kapazitätsströme     bedingten Wick1ungsstrom   hervorrufen. 



   Nach Fig. 5 ist das einem Kondensator entsprechende Doppelband unter entsprechender Isolation spiralförmig in mehreren Lagen um den Kern gewickelt. Es ist dabei das   äussere   Ende des einen Metallbandes mit dem inneren Ende des anderen durch den Leiter e verbunden. Auch bei dieser Ausführungsform der Wicklung kann die in Fig. 2 veranschaulichte Unterteilung einer einzigen Gesamtwicklung in mehrere in Reihe zu schaltende Einzelwicklungen angewendet werden.   Es werden hiebei die Verbindungsleiter derart angeordnet, dass sämtliche Metallbänder aller Einzclapulen in Reihe geschaltet und die Enden often gelassen sind.   



   PATENT. ANSPRÜCHE :
1. Einrichtung zur Kompensation des Leerlaufstromes bei Spulen mit Eisenkern, insbesondere bei Messtransformatoren oder Relais, bei der eine zusätzliche Spule mit kapazitiver Belastung vorgesehen ist, dadurch gekennzeichnet, dass die an ihren Enden offene Zusatzspule selbst derart grosse Kapazität zwischen ihren Windungen besitzt, dass sich die Kapazitätsströme zu einem den   Eisenkern umniessenden   Strom zusammensetzen, der dem Magnetisierungsstrom des   liernes   entgegenwirkt.



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   Winding atoms in the wake. This phenomenon must be taken into account when choosing the number of winding layers of each coil and the number of individual coils and the cross-section of the metal bandea.



   Resistors can be connected between the connections of the individual coils,
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 cause winding current caused by the capacitance currents.



   According to FIG. 5, the double tape corresponding to a capacitor is wrapped around the core in a spiral shape in several layers with appropriate insulation. The outer end of one metal band is connected to the inner end of the other by the conductor e. In this embodiment of the winding, too, the subdivision of a single overall winding illustrated in FIG. 2 into several individual windings to be connected in series can be used. The connecting conductors are arranged in such a way that all metal strips of all individual clips are connected in series and the ends are left open.



   PATENT. EXPECTATIONS :
1. A device for compensating the no-load current in coils with an iron core, in particular in measuring transformers or relays, in which an additional coil with capacitive load is provided, characterized in that the additional coil, open at its ends, itself has such a large capacitance between its turns that Combine the capacitance currents to form a current that encircles the iron core and counteracts the magnetizing current of the iron core.

Claims (1)

2. Einrichtung nach Anspruch 1, dadurch gekennzeichnet, dass die Zusatzspule aus einem spiralförmig um den Kern gewickelten isolierten Metallband besteht. 2. Device according to claim 1, characterized in that the additional coil consists of an insulated metal strip wound spirally around the core. 3. Einrichtung nach Anspruch 1, dadurch gekennzeichnet, dass die Zusatzspule aus mehreren gegeneinander isolierten Lagen von Metallbändern besteht, die gleichzeitig spiralförmig um den Kern gewickelt sind. 3. Device according to claim 1, characterized in that the additional coil consists of several mutually insulated layers of metal strips which are simultaneously wound in a spiral around the core. 4. Einrichtung nach Anspruch 1 oder den Unteransprüchen, dadurch gekennzeichnet, dass die Zusatzspule aus mehreren Einzelspulen besteht, deren Wicklungsenden derart verbunden sind, dass an den offenen Enden der Gesamtspule eine erhöhte elektromotorische Kraft besteht und ein entsprechend verstärkter Wicklungsstrom erzeugt wird. 4. Device according to claim 1 or the dependent claims, characterized in that the additional coil consists of several individual coils, the winding ends of which are connected in such a way that there is an increased electromotive force at the open ends of the overall coil and a correspondingly increased winding current is generated.
AT75034D 1915-04-17 1916-04-12 Device for compensating the no-load current in coils with iron cores, in particular in measuring transformers or relays. AT75034B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE75034X 1915-04-17

Publications (1)

Publication Number Publication Date
AT75034B true AT75034B (en) 1918-11-25

Family

ID=5636973

Family Applications (1)

Application Number Title Priority Date Filing Date
AT75034D AT75034B (en) 1915-04-17 1916-04-12 Device for compensating the no-load current in coils with iron cores, in particular in measuring transformers or relays.

Country Status (1)

Country Link
AT (1) AT75034B (en)

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