DE837878C - DC watt hour counter for high voltage - Google Patents

DC watt hour counter for high voltage

Info

Publication number
DE837878C
DE837878C DEP31307A DEP0031307A DE837878C DE 837878 C DE837878 C DE 837878C DE P31307 A DEP31307 A DE P31307A DE P0031307 A DEP0031307 A DE P0031307A DE 837878 C DE837878 C DE 837878C
Authority
DE
Germany
Prior art keywords
high voltage
watt hour
hour counter
current
watt
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
DEP31307A
Other languages
German (de)
Inventor
Kurt Kessler
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 AG
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
Priority to DEP31307A priority Critical patent/DE837878C/en
Application granted granted Critical
Publication of DE837878C publication Critical patent/DE837878C/en
Expired 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
    • G01R11/30Dynamo-electric motor meters

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Tests Of Circuit Breakers, Generators, And Electric Motors (AREA)

Description

Gleichstromwattstundenzähler für Hochspannung Bei Gleichst romvattstundenzählern für Hochspannulig muß im Spannungskreis der weitaus größte Teil der Hochspannung in Vorwiderständen des Ankers vernichtet werden. Da sich der Anker strom in der Grolßenordnung von 20 mA bewegt, ist die in den Vorwiderständen umgesetzte Leistung sehr hoch. Es hat deshall> nicht an Vorschlägen gefehlt. andere Meßverfahren anzuwenden, bei denen z. 13. lurch einen Spannungspfad Brückenschaltungen l>eheizt werden oder der Gleichstrom durch umlaufende Teile in ÄVechselstrom bzw. in einen Gleichstrom niedrigerer Spannung umgewandelt wird Alle diese Meßverfahren sind aber umständlich und bedürfen einer stetigen Überwachung.DC watt hour meter for high voltage With DC romvatt hour meters For high voltage, by far the largest part of the high voltage must be in the voltage circuit be destroyed in series resistors of the armature. Since the anchor current is in the The power converted in the series resistors is of the order of magnitude of 20 mA very high. There has therefore> been no lack of suggestions. other measurement methods apply where z. 13. Bridge circuits are heated by a voltage path or the direct current through rotating parts in alternating current or in one Direct current of lower voltage is converted. All these measuring methods are however cumbersome and require constant monitoring.

Die Erfindung schlägt einen neuen, besonders den Bedürfnissen der Praxis entsprechenden Weg ein. The invention proposes a new, especially the needs of Practice a corresponding way.

Erfindungsgemäß enthält der Hauptstrommagnetkreis des Wattstundenzählers derart viel Eisen, daß der Zähler bei einem Ankerstrom von etwa 5 mA ein ausreichendes Drehmoment entwickelt, d. h. also ein Drehmoment, das die Einhaltung der Fehlergrenzen gewährleistet. Der gute Eisenrückschluß im Hauptstromkreis ergibt ein starkes Hauptstromfeld, ohne daß die Verluste in der Hauptstromwicklung das übliche Maß zu übersteigen brauchen. Es wird also bei Gleichstromwattstundenzählern für Hochspannung das Hauptstromfeld in viel stärkerem Maße zur Drehmoments- bildung herangezogen als das Spannungsfeld des Ankers. Auf diese Weise kann man die Verluste in den Vorwiderständen des Ankers auf den dritten bzw. vierten Teil herabsetzen und dadurch eine wirtschaftliche Meßanordnung erhalten.According to the invention contains the main magnetic circuit of the watt-hour meter so much iron that the counter with an armature current of about 5 mA a sufficient Torque developed, d. H. so a torque that adheres to the error limits guaranteed. The good iron return in the main circuit results in a strong main current field, without the losses in the main current winding needing to exceed the usual level. In the case of direct current watt-hour meters for high voltage, it becomes the main current field to a much greater extent for torque education used as the tension field of the anchor. This way you can see the losses in the series resistors of the anchor to the third or fourth part and thus an economic Received measuring arrangement.

Wattstundenzähler mit Eisen im Hauptstromkreis sind an sich bekannt. Um sie für Hoch spannung geeignet zu machen, braucht man beispielsweise nur die Eisenquerschnitte entsprechend zu vergrößern und unter Umständen den Anker entsprechend aus mehr Windungen dünnen Drahtes herzustellen. Um Schädigungen des Stromwenders bei etwaigen Kontaktunterbrechungen zu ver meiden, genügt es, zu dem Anker einen Widerstand parallel zu schalten, der etwa zehnmal so hoch ist als der des Ankers, also den Strom in den Ankervorwiderständen kaum nennenswert erhöht. Watt-hour meters with iron in the main circuit are known per se. To make them suitable for high voltage, you only need that, for example To enlarge iron cross-sections accordingly and possibly the anchor accordingly made from more turns of thin wire. To damage the commutator To avoid any interruptions in contact, it is sufficient to one with the anchor To connect resistance in parallel, which is about ten times as high as that of the armature, so the current in the armature series resistors hardly increased significantly.

PATENTAN5PÜCflE: I. Gleichstromwattstundenzähler für Hochspannung, dadurch gekennzeichnet, daß der Hauptstrommagnetkreis derart viel Eisen enthält, daß der Zähler bei einem Ankerstrom von etwa 5 mA ein ausreichendes Drehmoment entwickelt. PATENTAN5PÜCflE: I. DC watt hour meter for high voltage, characterized in that the main magnetic circuit contains so much iron that that the counter develops sufficient torque at an armature current of about 5 mA.

Claims (1)

2. Gleichstromwattstundenzähler nach Anspruch I, dadurch gekennzeichnet, daß zu dem Anker und seinem Stromwender ein Widerstand parallel geschaltet ist, der etwa zehnmal so groß ist wie der Ankerwiderstand. 2. DC watt hour meter according to claim I, characterized in that that a resistor is connected in parallel to the armature and its commutator, which is about ten times the armature resistance.
DEP31307A 1949-01-11 1949-01-11 DC watt hour counter for high voltage Expired DE837878C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEP31307A DE837878C (en) 1949-01-11 1949-01-11 DC watt hour counter for high voltage

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEP31307A DE837878C (en) 1949-01-11 1949-01-11 DC watt hour counter for high voltage

Publications (1)

Publication Number Publication Date
DE837878C true DE837878C (en) 1952-05-02

Family

ID=7372245

Family Applications (1)

Application Number Title Priority Date Filing Date
DEP31307A Expired DE837878C (en) 1949-01-11 1949-01-11 DC watt hour counter for high voltage

Country Status (1)

Country Link
DE (1) DE837878C (en)

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