[go: up one dir, main page]

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
Application number
DENDAT132805D
Other languages
German (de)
Publication of DE132805C publication Critical patent/DE132805C/de
Active legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G01MEASURING; TESTING
    • G01RMEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R11/00Electromechanical arrangements for measuring time integral of electric power or current, e.g. of consumption
    • G01R11/36Induction meters, e.g. Ferraris meters
    • G01R11/40Induction 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)

Patent-Anspruch:Patent claim: Transformator für Mehrphasenstrom-Mefsapparate, in welchen eine Summen- oder Differenzcoinbination von zwei oder mehr Netzströmen oder Netzspannungen zur Wirkung kommen soll, dadurch gekennzeichnet, dafs eine Anzahl von einander unabhängiger Primärwicklungen angeordnet sind, die von den zu combinirenden Strömen bezw. Spannungen verschiedener Phasen gespeist werden, während nur eine Secundärwicklung vorhanden ist, welche zum Meisapparat geführt wird.Transformer for multiphase electrical equipment in which a sum or difference coinbination of two or more mains currents or mains voltages should come into effect, characterized in that a number of independent primary windings are arranged from the to combining streams respectively. Voltages of different phases are fed while there is only one secondary winding, which is led to the chisel apparatus. Hierzu 1 Blatt Zeichnungen.1 sheet of drawings.
DENDAT132805D Active DE132805C (en)

Publications (1)

Publication Number Publication Date
DE132805C true DE132805C (en)

Family

ID=401048

Family Applications (1)

Application Number Title Priority Date Filing Date
DENDAT132805D Active DE132805C (en)

Country Status (1)

Country Link
DE (1) DE132805C (en)

Similar Documents

Publication Publication Date Title
DE132805C (en)
DE2502513A1 (en) CIRCUIT ARRANGEMENT WITH A NUMBER OF INVERTERS, IN PARTICULAR DIRECT CONVERTERS IN STAR CONNECTION
DE683963C (en) Group compounding for two or more converters connected to the same AC network
DE880019C (en) Multi-phase converter transformer
DE651005C (en) Multi-phase transformer arrangement for regulating the mains voltage according to size and phase
DE3206598A1 (en) Arrangement for measuring and monitoring asymmetries in rotating electrical induction machines
DE435655C (en) Device for feeding multi-phase mercury vapor rectifiers with anode number that is more than twice the number of mains phases
DE491991C (en) Twelve-phase transformer in which the primary windings of two transformers are connected in a star or delta series
DE589592C (en) Multi-phase motor with switchable winding divided into groups
DE241905C (en)
DE647376C (en) Pole-changing three-phase winding
DE667706C (en) Device for converting a single-phase alternating current into a multi-phase current by means of a multi-phase wound induction motor acting as an auxiliary source
DE373352C (en) Device for converting three-phase current into multi-phase current with a number of phases divisible by 3
DE633511C (en) Phase shifter
DE957058C (en) AC winding for single-phase 16 2/3 period and for three-phase 50-period current
DE684515C (en) Arrangement for generating the grid voltages of multi-phase converters
DE659463C (en) Arrangement for feeding rectifiers
AT41987B (en) Wattmeter for three-phase systems.
DE643108C (en) Arrangement for achieving the correct operation of apparatuses based on the two-watt meter principle
DE184378C (en)
DE539319C (en) Device for converting multiphase currents into direct current using static, mitallic rectifiers (e.g. metal-metal-oxide rectifiers)
DE1588373A1 (en) Device for measuring the generator load
DE229377C (en)
DE621743C (en) Stand winding consisting of separate partial windings for AC machines with high performance
DE528163C (en) Device for converting three-phase current into four-phase current, in particular for feeding four-phase rectifiers from a three-phase network