DE691334C - DC ampere-hour counter with a device to counteract the influence of a short circuit on the brake magnets - Google Patents
DC ampere-hour counter with a device to counteract the influence of a short circuit on the brake magnetsInfo
- Publication number
- DE691334C DE691334C DE1937L0092552 DEL0092552D DE691334C DE 691334 C DE691334 C DE 691334C DE 1937L0092552 DE1937L0092552 DE 1937L0092552 DE L0092552 D DEL0092552 D DE L0092552D DE 691334 C DE691334 C DE 691334C
- Authority
- DE
- Germany
- Prior art keywords
- ampere
- winding
- brake magnets
- short circuit
- windings
- 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)
- Dc Machiner (AREA)
Description
Gleichstrom-Amperestundenzähler mit einer Einrichtung, um dem Einfluß eines- Kurzschlusses auf die Bremsmagnete entgegenzuwirken Entsteht im Netz, in das ein Gleichstrom-Amperestundenzähler Seingeschaltet ist, ein Kurzschluß, so erzeugt blekanntlich die Anker wicklung des Zählers ein Magnetfeld, das imstande ist, die permanenten Magnete, welche den Gang des Ankers beeinflussen, -zu schwächen, so daß der Zähler in der Folge falsch registrieren würde.DC ampere-hour meter with a device to the influence to counteract a short circuit on the brake magnets that a DC ampere-hour meter is switched on, a short circuit is generated The armature winding of the meter is known to produce a magnetic field that is capable of producing permanent magnets, which influence the operation of the armature, -to weaken, so that the counter would register incorrectly as a result.
-Um diesen Nachteilen zu begegnen, hat man sich bereits besonderer paramagnetischer Brücken bedient, die im einen Fall die in einer eisernen Grundplatte erzeugten magnetischen Felder, um sie nach Möglichkeit in bezug auf das umlaufende System unschädlich zu machen, kurzschließen, und in einem anderen Fall einen Teil der Streukraftlinien des Bremsmagneten in den Bereich des bleweglichen Zählerankers leiten, um dergestalt ein zusätzliches Drehmoment zu erzeugen. -To face these disadvantages, one has already made special paramagnetic bridges, in one case those in an iron base plate generated magnetic fields in order to keep them as close as possible to the rotating To neutralize the system, short-circuit it, and in another case a part the stray lines of force of the brake magnet in the area of the bleweglichen meter armature conduct in order to generate additional torque in this way.
Die Erfindung hat eine einfachere Einrichtung zum Gegenstand, die keine besonderen Stücke, die den Aufbau des Zählers verwickelt machen, benutzt, und die darin besteht, daß die Bremsmagnete Wicklungen, die vom Zählerstrom oder wenigstens einem Teil desselben durchflossen sind und deren Wicklungssinn dem der Wicklung des Zählerankers entgegengesetzt ist, von einer solchen Windungszahl tragen, daß sie biei normaler Stromstärke keine merkbare Wirkung ausüben, bei Kurzschluß aber den dann eatmagnedsieren den Amperewindungen des Zählerankers entgegenwirken, so daß keine Schwächung der Bremsmagnete eintritt. The invention has a simpler device for the subject does not use any special pieces that would complicate the construction of the counter, and that consists in that the brake magnet windings, which are from the counter current or at least a part of the same are traversed and their winding sense that of the Winding of the counter armature is opposite, carry such a number of turns, that they have no noticeable effect at normal current strength, in the event of a short circuit but the then eatmagnedsieren the ampere turns of the counter armature counteract so that no weakening of the brake magnets occurs.
Die Zeichnung zeigt drei Ausführungsbeispiele der Erfindung in schematischer Dar- -stellung. The drawing shows three exemplary embodiments of the invention in schematic form Depiction.
Fig. I ist ein erstes, Fig. 2 ein zweites und Fig. 3 ein drittes Beispiel. Fig. I is a first, Fig. 2 is a second and Fig. 3 is a third Example.
Nach dem ersten Ausführungsbeispiel ist I der Kollektor des Ankers eines Gleichstrom Amperestundenzählers. Der Anker selbst ist nicht dargestellt, diesen hat man sich jedoch in den Luftspalten zweier permanenter Bremsmagnete 2 liegend zu denken. 3, 4 sind die Stromleitungen eines Netzes, in deren Zweig 3 mittels Bürsten 5 am Kollektor 1 die Wicklung des Zähierankers eingeschaltet ist. According to the first embodiment, I is the collector of the armature a DC ampere-hour meter. The anchor itself is not shown, However, you have this in the air gaps of two permanent brake magnets 2 to think lying down. 3, 4 are the power lines of a network, in whose branch 3 means Brushes 5 on the collector 1 the winding of the Zähieranker is switched on.
In den Leitungszweig 3 sind ferner Wicklunge 6 eingeschaltet, die je einen Schenkel eines der Magnete 2 umgeben und deren Wicklungssinn demjenigen-der Wicklung des Zählerankers entgegengesetzt ist. Die Wicklungen 6 haben nur wenig Windungen (bei einem 5-Amp.-Zähler etwa sechs pro Magnet), so daß sie bei normaler Stromstärke keine merkbare Wirkung ausüben. 7 ist eine Nebenschlußwicklung zum Zähleranker. In the branch 3 windings 6 are also turned on, the each surround a leg of one of the magnets 2 and the direction of winding that-the Winding of the counter armature is opposite. The windings 6 have only a few Turns (about six per magnet on a 5-amp. Meter) so that they are normal Current strength have no noticeable effect. 7 is a shunt winding to the meter armature.
Tritt ein Kurzschluß in der Leitung 3, 4 auf, so wächst die Wirkung der Wicklungen 6 auf die permanenten Magnete 2 im Sinne eines Magnetisierens derselben, d. h. die Wicklungen 6 wirken den dann die Magnete z entmagnetisierenden Amperewindungen des Zählerankers entgegen, so daß keine Schwächung der permanenten Magnete 2 eintritt. If a short circuit occurs in line 3, 4, the effect increases the windings 6 on the permanent magnets 2 in the sense of magnetizing them, d. H. the windings 6 act on the ampere turns demagnetizing the magnets z counter to the counter armature, so that no weakening of the permanent magnets 2 occurs.
Claims (3)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH691334X | 1937-04-21 |
Publications (1)
Publication Number | Publication Date |
---|---|
DE691334C true DE691334C (en) | 1940-05-23 |
Family
ID=4529263
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE1937L0092552 Expired DE691334C (en) | 1937-04-21 | 1937-05-15 | DC ampere-hour counter with a device to counteract the influence of a short circuit on the brake magnets |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE691334C (en) |
-
1937
- 1937-05-15 DE DE1937L0092552 patent/DE691334C/en not_active Expired
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