DE514349C - Device for the detection of short-circuited turns of coils - Google Patents

Device for the detection of short-circuited turns of coils

Info

Publication number
DE514349C
DE514349C DENDAT514349D DE514349DD DE514349C DE 514349 C DE514349 C DE 514349C DE NDAT514349 D DENDAT514349 D DE NDAT514349D DE 514349D D DE514349D D DE 514349DD DE 514349 C DE514349 C DE 514349C
Authority
DE
Germany
Prior art keywords
choke
test
short
coils
coil
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
DENDAT514349D
Other languages
German (de)
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.)
ABB Training Center GmbH and Co KG
Original Assignee
Hartmann and Braun AG
Publication date
Application granted granted Critical
Publication of DE514349C publication Critical patent/DE514349C/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
    • G01R31/72—Testing of electric windings
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
    • G01R31/52—Testing for short-circuits, leakage current or ground faults

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)

Description

Gerät zum Nachweis kurzgeschlossener Windungen von Spulen Es ist bekannt, kurzgeschlossene Windungen von Spulen dadurch nachzuweisen, daß man sie in das Magnetwechselfeld einer Drossel bringt, die in eine Wechselstrom-Brückenschaltung eingefügt ist. Die etwa kurzgeschlossenen Windungen der Spule beeinflussen dann den magnetischen Fluß und die Induktivität der Drossel und damit die Zeigerstellung des Meßgerätes der Brückenschaltung.Device for detecting short-circuited turns of coils It is known Detect short-circuited turns of coils by placing them in the alternating magnetic field a choke inserted in an AC bridge circuit. the Any short-circuited turns of the coil then influence the magnetic flux and the inductance of the choke and thus the pointer position of the measuring device Bridge circuit.

Vor den bekannten Einrichtungen zeichnet sich die Erfindung dadurch aus, daß die Prüfdrossel in die Schaltung eines an sich bekannten eisengeschlossenen Elektrodynamometers ohne mechanische Richtkraft mit Differentialdrehspule eingefügt wird. Durch die Anwendung dieses Meßsystems wird eine äußerst hohe Empfindlichkeit erzielt, die das Anwendungsgebiet erweitert und auch eine besonders günstige Form der verwendeten Prüfdrossel gestattet.The invention is distinguished from the known devices by this from that the test choke in the circuit of a known iron-closed Electrodynamometer without mechanical straightening force with differential rotating coil inserted will. The use of this measuring system results in extremely high sensitivity achieved, which expands the field of application and also a particularly favorable shape the test choke used.

In der Zeichnung ist die Erfindung an einem Ausführungsbeispiel dargestellt. In Abb. i ist a das eisengeschlossene Elektrodynamometer, das an ein Wechselstromnetz,: z. B. mit Hilfe des Steckers b, anzuschließen ist. c ist die Prüfdrossel, die in Form eines offenen U ausgeführt ist. Der eine Schenkel c' dieser Prüfdrossel ist in dem Ausführungsbeispiel als verhältnismäßig dünner Stab ausgebildet und ragt aus dem Gehäuse d des Gerätes heraus, so daß man über diesen Schenkel die zu untersuchende Spule e führen kann.In the drawing, the invention is shown using an exemplary embodiment. In Fig. I, a is the iron-closed electrodynamometer which is connected to an alternating current network: B. with the help of the connector b is to be connected. c is the test throttle, which is designed in the form of an open U. One leg c 'of this test choke is designed as a relatively thin rod in the exemplary embodiment and protrudes from the housing d of the device so that the coil e to be examined can be guided over this leg.

Es entsteht so ein handliches Gerät, das außer dem Anschlußstecker kein weiteres Zubehör benötigt und trotz seiner hohen Anzeigeempfindlichkeit auch für die Verwendung in Werkstätten u. dgl. geeignet ist.The result is a handy device that apart from the connector no further accessories are required and, despite its high display sensitivity, too is suitable for use in workshops and the like.

Abb. 2 zeigt die Schaltung dieses Ausführungsbeispieles. In ihr bedeuten U die Wechsel-Spannung, F die Feldspule, D' und D2 die beiden Wicklungen der Differentialdrehspule, L1 eine auf festen Wert eingestellte Vergleichsdrossel und L2 die Prüfdrossel, über deren freien Schenkel die zu prüfende Spule e geschoben ist.Fig. 2 shows the circuit of this embodiment. In it mean U the alternating voltage, F the field coil, D 'and D2 the two windings of the differential rotating coil, L1 a comparison choke set to a fixed value and L2 the test choke, above whose free leg the coil to be tested e is pushed.

Wenn diese Spule eine oder mehrere kurzgeschlossene Windungen enthält, so schlägt der Zeiger des Gerätes aus.If this coil contains one or more short-circuited turns, so the pointer of the device deflects.

Die Einrichtung eignet sich besonders zur schnellen Prüfung einer größeren Anzahl von Spulen auf Kurzschlußwindungen.The device is particularly suitable for quick testing of a larger number of coils on short-circuit turns.

Claims (1)

PATENTANSPRÜCHE: i. Gerät zum Nachweis kurzgeschlossener Windungen von Spulen mit Hilfe einer Wechselstrom - Widerstands --Vergleichseinrichtung, bei der der magnetische Fluß einer Drossel durch die kurzgeschlossenen Windungen beeinfiußt wird, dadurch gekennzeichnet, daß als Anzeigegerät ein an sich bekanntes eisengeschlossenes Elektrodynamometer ohne mechanische Richtkraft mit Differentialdrehspule Verwendung findet, dessen einer Spulenteil an eine Vergleichsdrossel und dessen anderer Spulenteil an die von der zu untersuchenden Spule beeinflußte Prüfdrossel angeschlossen ist. a. Gerät nach Anspruch i, dadurch gekennzeichnet, daß als zu beeinflussende Prüfdrosseleine Drossel mit offenem (U-förmigem) Eisen dient, deren einer Schenkel zweckmäßig so ausgebildet ist, daß er ein bequemes Überschieben von Spulen verschiedener Form gestattet. 3. Gerät nach Anspruch i und 2, dadurch gekennzeichnet, daß das Anzeigegerät, die Vergleichsdrossel und die zu beeinflussende. Prüfdrossel zu einem Gerät vereinigt sind. q.. Gerät nach Anspruch i bis 3, dadurch gekennzeichnet; daß der freie Schenkel der Prüfdrossel aus dem Gerätgehäuse herausragt.PATENT CLAIMS: i. Device for the detection of short-circuited windings of coils with the help of an alternating current resistance comparison device which influences the magnetic flux of a choke through the short-circuited windings is, characterized in that a known iron-closed as the display device Electrodynamometer without mechanical straightening force with differential moving coil use finds, whose one coil part to a comparison choke and the other coil part is connected to the test choke influenced by the coil to be examined. a. Device according to Claim i, characterized in that the test throttle line to be influenced Throttle with open (U-shaped) iron is used, one leg of which is expediently so is designed that it is a comfortable pushing over of coils of various shapes allowed. 3. Apparatus according to claim i and 2, characterized in that the display device, the comparison choke and the one to be influenced. Test choke combined into one device are. q .. Device according to claim i to 3, characterized in that; that the free thigh the test choke protrudes from the device housing.
DENDAT514349D Device for the detection of short-circuited turns of coils Expired DE514349C (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE514349T

Publications (1)

Publication Number Publication Date
DE514349C true DE514349C (en) 1930-12-12

Family

ID=6548654

Family Applications (1)

Application Number Title Priority Date Filing Date
DENDAT514349D Expired DE514349C (en) Device for the detection of short-circuited turns of coils

Country Status (1)

Country Link
DE (1) DE514349C (en)

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