DE526969C - Device for the simultaneous tensioning and heating of a cable or other electrical object - Google Patents

Device for the simultaneous tensioning and heating of a cable or other electrical object

Info

Publication number
DE526969C
DE526969C DEF69013D DEF0069013D DE526969C DE 526969 C DE526969 C DE 526969C DE F69013 D DEF69013 D DE F69013D DE F0069013 D DEF0069013 D DE F0069013D DE 526969 C DE526969 C DE 526969C
Authority
DE
Germany
Prior art keywords
heating
cable
transformer
test
electrical object
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
DEF69013D
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.)
Felten and Guilleaume Carlswerk AG
Original Assignee
Felten and Guilleaume Carlswerk AG
Publication date
Priority to DEF69013D priority Critical patent/DE526969C/en
Application granted granted Critical
Publication of DE526969C publication Critical patent/DE526969C/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
    • G01R31/50Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
    • G01R31/58Testing of lines, cables or conductors

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Testing Electric Properties And Detecting Electric Faults (AREA)

Description

Einrichtung zum gleichzeitigen Spannen und Heizen eines Kabels oder eines anderen elektrischen Gegenstandes Alle elektrischen Gegenstände werden, bevor sie in Betrieb genommen werden, einer allgemeinen Prüfung unterworfen, ob sie den an sie gestellten Anforderungen genügen. Sie werden dabei auch einer Spannungsprobe unterzogen. Die hierfür notwendige Prüfspannung entnimmt man einem Prüftransformator.Device for simultaneous tensioning and heating of a cable or Another electrical object All electrical objects are before when they are put into operation, they are subjected to a general test to determine whether they have the meet the requirements placed on them. You will also be a test of tension subjected. The test voltage required for this is taken from a test transformer.

Für die Prüfung von Höchstspannungsapparaten sind ganz erhebliche Prüfspannungen notwendig. Da Prüftransformatoren für sehr hohe Spannungen wegen der Isolationsschwierigkeiten nicht mehr wirtschaftlich in einem einzigen Apparat hergestellt werden können, verwendet man in solchen Fällen einen Kaskadentransformatorensatz, bei dem mehrere Transformatoren in Kaskade geschaltet sind.For the testing of extra high voltage equipment are very considerable Test voltages necessary. Because test transformers for very high voltages the insulation difficulties are no longer economical in a single device can be produced, a cascade transformer set is used in such cases, in which several transformers are connected in cascade.

Bei der Prüfung eines Gegenstandes ist darauf zu achten, daß der Prüfgegenstand unter Bedingungen geprüft wird, die etwa den praktischen Betriebsbedingungen entsprechen. Es ist also nicht nur nötig, daß das Kabel mit der vorgeschriebenen Spannung-geprüft wird, sondern, um den wirklichen Betriebsverhä.ltnissen nahezukommen, ist es auch erforderlich, das Kabel während dieser Probe heizen zu können.When testing an object, it must be ensured that the test object is tested under conditions which approximately correspond to the practical operating conditions. So it is not only necessary that the cable is tested with the prescribed voltage but, in order to get close to the real operating conditions, it is required to be able to heat the cable during this rehearsal.

Die vorliegende Erfindung betrifft nun eine einfache Anordnung zum gleichzeitigen Heizen und Spannen eines Kabels oder eines anderen elektrischen Gegenstandes, und zwar für den Fall, daß die erforderliche Prüfspannung einem Kaskadentransforrnatorensatz entnommen wird. Erfindungsgemäß wird die bei einem Kaskadentransformatorensatz zwischen den einzelnen Transformatoren vorhandene Übertragungswicklung angezapft, und es wird ihr für die Heizung des Prüfgegenstandes, beispielsweise über einen Regel- oder Stufentransformator, Heizstrom entnommen; dabei steht gleichzeitig die Kabelisolation unter der Prüfspannung, die der Sekundärspannung dieser Stufe entspricht.The present invention relates to a simple arrangement for simultaneous heating and tensioning of a cable or other electrical object, in the event that the required test voltage is a cascade transformer set is removed. According to the invention in a cascade transformer set between tapped the existing transmission winding of the individual transformers, and it is used for the heating of the test object, for example via a control or step transformer, heating current taken; the cable insulation is at the same time below the test voltage that corresponds to the secondary voltage of this stage.

In der beiliegenden Zeichnung ist das Schaltschema eines Kaskadentransformators dargestellt mit der erfindungsgemäßen iveuerung.In the accompanying drawing, the circuit diagram of a cascade transformer is shown with the iveuerung according to the invention.

Der Prüftransformatorensatz besteht aus zwei oder mehreren Transfoimatoren I, 1I. III usw., die in Kaskade geschaltet sind. Die Primärwicklung a des Transformators I ist an die Stromquelle b angeschlossen. Die Hochspannungswicklung c des Transformators I ist mit ihrem Anfang bei d geerdet und mit ihrem Ende finit dem Anfang der Hochspannungswicklung e des Transformators 1I verbunden. Der Anfang der Hochspannungswicklung e ist mit dem isoliert aufgestellten Gehäuse des Transformators II bei f leitend verbunden. Die Übertragungswicklung g ist erfindungsgemäß über den Stufentransformator 1a angezapft. Auf diese Weise kann ihr zwecks. Prüfung des an den Klemmen i angeschlossenen Prüfgegenstandes Heizstrom entnommen werden.The test transformer set consists of two or more transformers I, 1I. III etc., which are connected in cascade. The primary winding a of the transformer I is connected to the current source b. The high voltage winding c of the transformer I is grounded with its beginning at d and its end finite with the beginning of the high-voltage winding e of the transformer 1I connected. The beginning of the high voltage winding e is with the isolated housing of the transformer II is conductively connected at f. According to the invention, the transmission winding g is tapped via the step transformer 1a. This way you can use it for the purpose. Testing of the test object connected to terminals i Heating current can be taken.

Claims (1)

PATENTANSPRUCH: Einrichtung zum gleichzeitigen Spannen und Heizen eines Kabels oder eines anderen elektrischen Gegenstandes, dadurch gekennzeichnet, daß die Übertragungswicklung des die Prüfspannung liefernden Kaskadentransformators angezapft ist, derart, daß sie auch für die Heizung .des Prüfgegenstandes, vorzugsweise über einen Regel- oder Stufentransformator, dient.PATENT CLAIM: Device for simultaneous tensioning and heating a cable or other electrical object, characterized in that, that the transmission winding of the cascade transformer supplying the test voltage is tapped in such a way that it can also be used for heating the test item, preferably via a regulating or step transformer.
DEF69013D Device for the simultaneous tensioning and heating of a cable or other electrical object Expired DE526969C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEF69013D DE526969C (en) Device for the simultaneous tensioning and heating of a cable or other electrical object

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEF69013D DE526969C (en) Device for the simultaneous tensioning and heating of a cable or other electrical object

Publications (1)

Publication Number Publication Date
DE526969C true DE526969C (en) 1931-06-12

Family

ID=7111019

Family Applications (1)

Application Number Title Priority Date Filing Date
DEF69013D Expired DE526969C (en) Device for the simultaneous tensioning and heating of a cable or other electrical object

Country Status (1)

Country Link
DE (1) DE526969C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0054673A1 (en) * 1980-12-24 1982-06-30 Philips Kommunikations Industrie AG Method and apparatus for testing the heat resistance of a varnish insulated wire

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0054673A1 (en) * 1980-12-24 1982-06-30 Philips Kommunikations Industrie AG Method and apparatus for testing the heat resistance of a varnish insulated wire

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