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 objectInfo
- 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
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
- G01R31/58—Testing 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)
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)
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 |
-
0
- DE DEF69013D patent/DE526969C/en not_active Expired
Cited By (1)
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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