DE323488C - Installation on direct current watt-hour counters with iron base plates - Google Patents
Installation on direct current watt-hour counters with iron base platesInfo
- Publication number
- DE323488C DE323488C DENDAT323488D DE323488DD DE323488C DE 323488 C DE323488 C DE 323488C DE NDAT323488 D DENDAT323488 D DE NDAT323488D DE 323488D D DE323488D D DE 323488DD DE 323488 C DE323488 C DE 323488C
- Authority
- DE
- Germany
- Prior art keywords
- direct current
- iron base
- base plates
- installation
- 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
Links
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
- G01R11/30—Dynamo-electric motor meters
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measuring Instrument Details And Bridges, And Automatic Balancing Devices (AREA)
Description
Einrichtung an Gleichstrom-Wattstundenzählern mit eisernen Grundplatten. Bei Elektrizitätszählern liegt das Bestreben vor, höhere technische Anforderungen zu erfüllen und gleichzeitig möglichst billige Herstellung zu erzielen, um sie auch in kleinen Anlagen mit Nutzen verwenden zu können.Installation on direct current watt-hour meters with iron base plates. In the case of electricity meters, there is a tendency to meet higher technical requirements to meet and at the same time to achieve the cheapest possible production to them to be able to use them with benefit in small systems.
Zu diesem Zwecke ist das Gehäuse immer mehr aus Eisen hergestellt worden, was bei Wechsel- und Drehstromzählern auch unbeschadet der erforderlichen Genauigkeit zulässig ist. Bei Gleichstrom-Wattstundenzählern war es bis jetzt noch nicht möglich, diese Aufgabe einwandfrei zu lösen, da bei sehr stark erregtem Hauptstrom, z. B. bei Kurzschluß, sich Pole in der eisernen Grundplatte bilden, welche erst nach einiger Zeit, oft nach einigen Tagen, verschwinden, und bis dahin das umlaufende System, und damit die Angaben des Zählers wesentlich beeinflussen.For this purpose, the case is made more and more of iron what is required for single-phase and three-phase electricity meters without prejudice to the required Accuracy is permissible. With DC watt-hour meters it was until now not possible to solve this task properly, because with a very strongly excited main current, z. B. in the event of a short circuit, poles are formed in the iron base plate, which only after a while, often after a few days, disappear, and by then the circulating one System, and thus the information of the meter significantly.
Die Erfindung will dies vermeiden, indem sie den bei starken Stromstößen entstehenden Feldern der Grundplatte einen magnetischen Schluß verschafft, der die schädlichen Felder von der Beeinflussung auf das umlaufende System abhält.The invention seeks to avoid this by preventing strong current surges resulting fields of the base plate provides a magnetic circuit that the prevents harmful fields from affecting the circulating system.
Ein Ausführungsbeispiel ist auf der Zeichnung dargestellt Auf einer Grundplatte r aus Eisen sind die Hauptstromspulen z montiert. Bei einem Kurzschluß bilden sich bei N und S Pole in der Grundplatte, die sie zu einem Quermagnet ausbilden, dessen Kraftlinien hauptsächlich in der punktiert gezeichneten Richtung verlaufen. Auf diesem Wege treffen sie auf die Windungen der umlaufenden Nebenschlußspule3 des Zählers und beeinflussen dieselbe in ihrer Bewegung, so daß die Angaben des Zählers falsch werden.An embodiment is shown in the drawing The main current coils z are mounted on the iron base plate r. In the event of a short circuit at N and S poles are formed in the base plate, which they form into a transverse magnet, whose lines of force run mainly in the direction shown in dotted lines. In this way they meet the turns of the rotating shunt coil3 of the counter and influence it in its movement, so that the indications of the Counter will be wrong.
Nach der Erfindung wird nun auf der Grundplatte ein Schlußstück in Gestalt einer paramagnetischen Brücke 4 aus Material von möglichst geringer Remanenz befestigt, welches den beim Kurzschluß entstehenden Polen N und S seine Enden 5 entgegenstreckt und das schädliche Feld derart kurzschließt, daß es das umlaufende System nicht mehr in praktisch unzulässiger Weise beeinflussen kann.According to the invention, a tail piece is now on the base plate in Shape of a paramagnetic bridge 4 made of material with the lowest possible remanence attached, which ends the poles N and S resulting from the short circuit 5 and the harmful field short-circuited so that it the surrounding Can no longer influence the system in a practically impermissible manner.
Claims (1)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE323488T |
Publications (1)
Publication Number | Publication Date |
---|---|
DE323488C true DE323488C (en) | 1920-07-26 |
Family
ID=6173736
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DENDAT323488D Expired DE323488C (en) | Installation on direct current watt-hour counters with iron base plates |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE323488C (en) |
-
0
- DE DENDAT323488D patent/DE323488C/en not_active Expired
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