DE132805C - - Google Patents
Info
- Publication number
- DE132805C DE132805C DENDAT132805D DE132805DA DE132805C DE 132805 C DE132805 C DE 132805C DE NDAT132805 D DENDAT132805 D DE NDAT132805D DE 132805D A DE132805D A DE 132805DA DE 132805 C DE132805 C DE 132805C
- Authority
- DE
- Germany
- Prior art keywords
- transformer
- phase
- fields
- voltages
- currents
- 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.)
- Active
Links
- 238000004804 winding Methods 0.000 claims description 2
- 102100000672 SMPX Human genes 0.000 claims 1
- 108060007673 SMPX Proteins 0.000 claims 1
- 239000004020 conductor Substances 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R11/00—Electromechanical arrangements for measuring time integral of electric power or current, e.g. of consumption
- G01R11/36—Induction meters, e.g. Ferraris meters
- G01R11/40—Induction meters, e.g. Ferraris meters for polyphase operation
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Coils Or Transformers For Communication (AREA)
Description
KAISERLICHESIMPERIAL
PATENTAMT.PATENT OFFICE.
Um bei Mehrphasenstrom-Mefsapparaten die Einführung hoher Spannungen bezw. Stromstärken zu vermeiden, bedient man sich vortheilhaft kleiner Transformatoren, deren niedrig gespannter Secundärkreis an die Apparate angeschlossen wird. In solchen Fällen nun, wo die Felder in den Mehrphasenstrom-Mefsapparaten durch die Combination zweier Hauptstrom- oder Nebenschlufsfelder entstehen, wie bei den Zählern nach D. R. P. 116115 und D. R. P. 117494 und vielen anderen gebräuchlichen Drehstromzählern, war es bisher üblich, ebenso viele Transformatoren zu verwenden, als zu combinirende Felder vorhanden sind.In order to bezw. Currents to avoid, one uses advantageously small transformers, whose low tense secondary circuit is connected to the apparatus. In such cases now where the fields in the multi-phase current measuring apparatus by the combination of two main current or secondary fields arise, as in the case of the counters according to D. R. P. 116115 and D. R. P. 117494 and many other common three-phase electricity meters, it was previously common to to use as many transformers as there are fields to be combined.
Die vorliegende Erfindung besteht nun darin, dafs nur ein einziger Mefstransformator mit mehreren Primärspulen und nur einer einzigen Secundärspule verwendet wird, indem das Feld des Transformators schon ein aus den von den Primärspulen erzeugten Feldern combinirtes Feld ist und somit die Combination der Felder schon in dem einen Transformator vollzogen wird.The present invention consists in the fact that only a single measuring transformer with multiple primary coils and only a single secondary coil is used by the field of the transformer already combines one from the fields generated by the primary coils Field and thus the combination of fields has already been completed in one transformer will.
Diese Anordnung unterscheidet sich wesentlich von der in Fig. 7 der britischen Patentschrift 22852 vom Jahre 1897. Hier wird zwar ebenfalls ein Transformator mit zwei primären Wicklungen und nur einer Sekundärwicklung verwendet, aber die beiden primären Amperewindungen des Transformators sind durch künstliche Mittel in der Phase verschoben, die erzeugende elektromotorische Kraft ist dagegen bei beiden dieselbe und es handelt sich bei dieser Anordnung nicht darum, zwei Hauptstrom- oder Nebenschlufsfelder eines Mehrphasennetzes im Zähler zur combinirten Wirkung zu bringen.This arrangement differs significantly from that shown in Figure 7 of the British patent 22852 from 1897. Here is also a transformer with two primary windings and only one secondary winding used, but the two primary ones Ampere-turns of the transformer are phase shifted by artificial means, the generating electromotive force, however, is the same for both and it is With this arrangement it is not a question of having two main or secondary fields of a multi-phase network to bring about the combined effect in the counter.
Die vorliegende Erfindung dagegen benutzt zur Speisung der verschiedenen Primärspulen die ohne künstliche Mittel von vornherein in der Phase verschobenen Ströme oder Spannungen eines Mehrphasenstromnetzes, welche in Summen- oder Differenzwirkung im Mefsinstrument combinirt werden sollen; das vom Strom der einzigen vorhandenen Secundärspule erzeugte Feld ist dann, von geringen Correctionen abgesehen, von gleicher Phase wie ein von den Primärspulen in Summenbezw. Differenzwirkung direct erzeugtes Feld.The present invention, on the other hand, is used to feed the various primary coils the currents or voltages shifted in phase from the outset without artificial means of a multi-phase power network, which in sum or difference effect in the measuring instrument to be combined; that from the current of the only existing secondary coil The generated field is then, apart from minor corrections, of the same phase like one of the primary coils in Sumumbezw. Difference effect directly generated field.
Die Zeichnung giebt die Schaltung eines Drehstromzählers für gleichbelastete Phasen in Verbindung mit einem Stromtransformator der beschriebenen Art.The drawing shows the circuit of a three-phase meter for phases with the same load Connection to a current transformer of the type described.
Sind abc die Linienströme und α β γ die Spannungen zwischen den Leitern, so soll z. B. der Mittelwerth des Productes a · (b — c) registrirt werden.If abc are the line currents and α β γ the voltages between the conductors, then z. B. the mean value of the product a · (b - c) can be registered.
Es können naturgemäfs auch mehr wie zwei Felder in einem solchen Transformator combinirt werden.Of course, more than two can also be used Fields can be combined in such a transformer.
Claims (1)
Publications (1)
Publication Number | Publication Date |
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DE132805C true DE132805C (en) |
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