DE406537C - Device for determining the location of faults in cables or insulated electrical lines - Google Patents

Device for determining the location of faults in cables or insulated electrical lines

Info

Publication number
DE406537C
DE406537C DEP47812D DEP0047812D DE406537C DE 406537 C DE406537 C DE 406537C DE P47812 D DEP47812 D DE P47812D DE P0047812 D DEP0047812 D DE P0047812D DE 406537 C DE406537 C DE 406537C
Authority
DE
Germany
Prior art keywords
location
cables
faults
determining
insulated electrical
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
DEP47812D
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to DEP47812D priority Critical patent/DE406537C/en
Application granted granted Critical
Publication of DE406537C publication Critical patent/DE406537C/en
Expired legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G01MEASURING; TESTING
    • G01RMEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/08Locating faults in cables, transmission lines, or networks

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Locating Faults (AREA)

Description

Einrichtung zur Fehlerortsbestimmung von Kabeln oder isolierten elektrischen Leitungen. Beim Gegenstand des Hauptpatents ist es erforderlich, ein Galvanometer zu benutzen, welches anzeigt, ob die Brücke Strom führt oder nicht. Wenn man bei der Durchführung der Messung von der Fehlerstelle weit entfernt ist, fließen verhältnismäßig große Ströme durch die Brücke, und der Zeiger des etnpiindlichen Galvanometers wird mit großer Kraft an den Endanschlag gedrückt, er verbiegt sich hierbei, und die Messung wird gestört.Device for determining the location of faults in cables or isolated electrical ones Cables. The subject of the main patent requires a galvanometer which indicates whether the bridge is carrying current or not. If you are at the measurement is far removed from the point of failure, flow proportionally large currents through the bridge, and the pointer of the individual galvanometer will pressed against the end stop with great force, it bends in the process, and the Measurement is disturbed.

Gemäß der Erfindung wird nun vor das Galvanometer ein Vorschaltwiderstand gelegt, dessen Größe beispielsweise durch einen Schleifkontakt abgemessen werden kann und -iler beispielsweise durch einen Drehknopf bewegt wird. Dieser Drehknopf kann beispielsweise drei Stellungen haben. In der erster Stellung ist der volle Vorschaltwiderstand eingeschaltet, und man erhält somit eine Grobeinstellung. In der zweiten Stellung ist der Vorschaltwiderstand zu einem Teil ab--eschaltet, und man erhält eine Mitteleinstellung. In der dritten Stellung des Drehknopfes ist schließlich der Vorschaltwidertand vollständig abgeschaltet (kurzreb.chlossen), und man erhält somit eire Feineinstellung. Dementsprechend kann ein mit ,lern Drehknopf verbundener Zeiger »grob«, ;:mittel« und »fein« anzeigen.According to the invention, a series resistor is now placed in front of the galvanometer placed, the size of which can be measured, for example, by a sliding contact can and -iler is moved, for example, by a rotary knob. This knob can for example have three positions. In the first position is the full one The ballast resistor is switched on, and a coarse setting is thus obtained. In in the second position the series resistor is partially switched off, and one gets a center setting. Finally, the rotary knob is in the third position the ballast resistor is completely switched off (short-circuit closed), and one obtains thus a fine adjustment. Accordingly, a knob connected to learning can be used Show pointer "coarse",;: medium "and" fine ".

Man verfährt bei der Benutzung des Apparates derart, daß man zunächst den Drehknopf auf Grobeinstellung bringt und sn lange die Kurbel dreht, welche die Feflerortanzeige hervorbringt, bis das Galvanometer in die Nullstellung entsprechend Stromlosigkeit der Brücke einspielt. Sodann wird der Drehknopf in die Mittelstellung gebracht; regelmäßig wird dann das Galvanomcter wiederum ausschlagen, und man muß die Kurbel, welche die Fehlerortsentfernung einstellt, wiederum so lange drehen, bis der Ausschlag verschwindet. Schließlich wird durch Feineinstellung, also vollständige Abschaltung, oder Kurzschließung des Vorschaltwiderstandes auch die genaueste Prüfung durchgeführt. Auch bei vollständiger Abschaltung des Widerstandes wird da:> Galvanometer wiederum aus der Nullage herausgehen und erst durch ein letztes Drehen der zugehörigen Kurbel die genaueste Ermittlung der Fehlerortsentfernung erfolgen.When using the apparatus, one proceeds in such a way that one starts with brings the rotary knob to the coarse setting and sn long turns the crank, which the Feflerort display brings up until the galvanometer in the zero position accordingly The bridge is without electricity. Then the rotary knob is in the middle position brought; The galvanometer will then regularly fail again, and one has to turn the crank, which sets the distance to the fault, so long again until the rash goes away. Finally, through fine-tuning, that is, complete Switching off or short-circuiting the series resistor is also the most precise test carried out. Even if the resistor is switched off completely:> Galvanometer again go out of the zero position and only by turning the associated one for the last time Crank the most precise determination of the fault location distance.

Die gleiche Einrichtung ist auch zweckmäßig, wenn man den Apparat nicht nur zur Fehlerortsbestimmung, sondern zur Messung von Erdströmen, des Wechselstromw-iderstandes, der Isolation usw. des Kabels oder der Leitung benutzt.The same facility is also useful when using the apparatus not only to determine the location of the fault, but also to measure earth currents, the alternating current resistance, the insulation etc. of the cable or line.

Claims (1)

PATENT-ANSPRUCI3: Einrichtung zur Fehlerortsbestimmung von Kabeln oder isolierten elektrischen Leitungen nach Patent 381412, gekennzeichnet durch einen zweckmäßig stufenweise abschaltbaren Vorschaltwiderstand irn Abzweig, welcher das Nullstrominstrument (Galvanometer) enthält.PATENT-ANSPRUCI3: Device for determining the location of faults in cables or insulated electrical cables according to patent 381412, characterized by an appropriately stepwise disconnectable series resistor in the branch, which contains the zero current instrument (galvanometer).
DEP47812D 1924-03-30 1924-03-30 Device for determining the location of faults in cables or insulated electrical lines Expired DE406537C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEP47812D DE406537C (en) 1924-03-30 1924-03-30 Device for determining the location of faults in cables or insulated electrical lines

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEP47812D DE406537C (en) 1924-03-30 1924-03-30 Device for determining the location of faults in cables or insulated electrical lines

Publications (1)

Publication Number Publication Date
DE406537C true DE406537C (en) 1924-11-21

Family

ID=7382662

Family Applications (1)

Application Number Title Priority Date Filing Date
DEP47812D Expired DE406537C (en) 1924-03-30 1924-03-30 Device for determining the location of faults in cables or insulated electrical lines

Country Status (1)

Country Link
DE (1) DE406537C (en)

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