DE1782776U - ROD CONVERTER WITH CAST RESIN INSULATOR. - Google Patents

ROD CONVERTER WITH CAST RESIN INSULATOR.

Info

Publication number
DE1782776U
DE1782776U DES27470U DES0027470U DE1782776U DE 1782776 U DE1782776 U DE 1782776U DE S27470 U DES27470 U DE S27470U DE S0027470 U DES0027470 U DE S0027470U DE 1782776 U DE1782776 U DE 1782776U
Authority
DE
Germany
Prior art keywords
cast resin
resin insulator
rubber
insulator
cast
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
DES27470U
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.)
Siemens AG
Original Assignee
Siemens AG
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 Siemens AG filed Critical Siemens AG
Priority to DES27470U priority Critical patent/DE1782776U/en
Publication of DE1782776U publication Critical patent/DE1782776U/en
Expired legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01FMAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00Details of transformers or inductances, in general
    • H01F27/28Coils; Windings; Conductive connections
    • H01F27/32Insulating of coils, windings, or parts thereof
    • H01F27/327Encapsulating or impregnating
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01FMAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00Details of transformers or inductances, in general
    • H01F27/02Casings
    • H01F27/022Encapsulation
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01FMAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00Details of transformers or inductances, in general
    • H01F27/28Coils; Windings; Conductive connections
    • H01F27/32Insulating of coils, windings, or parts thereof
    • H01F27/324Insulation between coil and core, between different winding sections, around the coil; Other insulation structures

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Insulating Of Coils (AREA)
  • Transformers For Measuring Instruments (AREA)

Description

Stabwandler mit Gießharzisolator -------------------------------- Bei der Verwendung von Gießharz als Isolierstoff für Wandler ergeben sich verschiedene Mängel. Alle Gießharzhärtungen, beispielsweise durch Polymerisation von y Vinylverbindungen oder durch Kondensation von Epoxyharzen, sind mit einem Dichteanstieg des festen Harzes gegenüber dem flüssigen Ausgangsmaterial verbunden. Unter ungünstigen Bedingungen führt die Aushärtung daher zur Lunkerbildung. Diese Lunker stellen eine Gefahr verminderter elektrischer Festigkeit der Gießharzisolation dar. Es wird z. B. Glimmen bei verhältnismäßig geringer Spannung beobachtet. Die Einbettung von Metallfolien oder -netzen zur Aufrechterhaltung eines Potentials sowie von starkwandigen Leitern führt infolge der Differenz des Ausdehnungskoeffizienten von Metall und Gießharz bei Temperaturänderungen bzw. bei örtlichen Temperaturfeldern, die durch Stromerwärmung der Leiter im Gießharz auftreten, zu mechanischen Spannungen. zwischen dem Gießharz und den eingebetteten Metallen, die in ungünstigen Fällen zur , \ Rißbildung im Gießharz führen können.Rod converter with cast resin insulator -------------------------------- When using cast resin as an insulating material for converters, there are various shortcomings. All cast resin hardening, for example by polymerizing y Vinyl compounds or the condensation of epoxy resins are associated with an increase in the density of the solid resin compared to the liquid starting material. Under unfavorable conditions, the hardening therefore leads to the formation of cavities. These voids represent a risk of reduced electrical strength of the cast resin insulation. B. Glimmer observed at relatively low voltage. The embedding of metal foils or networks to maintain a potential as well as thick-walled conductors leads to mechanical stresses due to the difference in the expansion coefficients of metal and cast resin when there are temperature changes or local temperature fields that occur due to the current heating of the conductors in the cast resin. between the casting resin and the embedded metals, which in unfavorable cases for , \ Can lead to cracking in the casting resin.

Um diese Schwierigkeiten bei Stabwandlern mit Gießharzisolatoren zu vermeiden, ist der Primärleiter unter Zwischenlage einer gummielastischen Hülle mit einem Gießharzisolator umgeben, in dessen den Primärleiter konzentrisch umgebender Ausnehmung der Eisenkern mit der ihn umgebenden Sekundärwicklung unter Auskleidung der Isolatorausnehmung mit einer gummielastischen Schicht angeordnet ist. Gegenüber den bisher verwendeten Formen folgt'der gummielastische Stoff der Schrumpfung des sich verfestigenden Harzes und verhindert das Auftreten von Lunkern. Durch besondere Profilerung des gummielastischen Polsters läßt sich eine feste Verankerung mit dem Gießharz erreichen. Wählt man als gummielastischen Stoff elektrisch leitenden Gummi, beispielsweise ein rußhaltiges Polymerisat von Butadien und Acrylsäurenitril, oder versieht man die Oberfläche des normalen gummielastischen Stoffes mit einem Anstrich eines leitenden Lackes, so ist auch die Gefahr der Schrumpfrißbildung an leitenden Stellen infolge von Temperaturfeldern innerhalb des Gießharzisolators behoben. In den Figuren 1. und 2 ist in verschiedenen Ansichten eine Ausführungsform'eines Stabwandlers genäß der Neuerung dargestellt.In order to address these difficulties with rod converters with cast resin insulators avoid, the primary conductor is sandwiched by a rubber-elastic sheath surrounded by a cast resin insulator, in which the primary conductor is concentrically surrounding Recess of the iron core with the surrounding secondary winding under the lining the isolator recess is arranged with a rubber-elastic layer. Opposite to the shapes used so far follow the elastic material of the shrinkage of the solidifying resin and prevents the occurrence of voids. By special Profiling of the rubber-elastic pad can be firmly anchored with the Achieve casting resin. If you choose electrically conductive rubber as the elastic material, for example a carbon black-containing polymer of butadiene and acrylonitrile, or the surface of the normal rubber-elastic material is given a coat of paint of a conductive lacquer, so is that too Risk of shrinkage cracks at conductive points as a result of temperature fields within the cast resin insulator Fixed. In FIGS. 1 and 2, an embodiment is shown in various views Rod converter shown according to the innovation.

Der Primärleiter @ ist unter Zwischenlage der gummielastischen Hülle 2. mit dem Gießharzisolator 3 umgeben. Der Gießharzisolator 3 besitzt die den Primärleiter 1 konzentrisch umgebende Ausnehmung 4,. die die Auskleidung 5 aus gummielastischem Stoff aufweist. In der Ausnehmung 4 ist der Eisenkern 6, der von der Sekundärwicklung 7 umgeben ist,. angeordnet, Die Hülle 2 aus gummielastischem Stoff wirkt als Polster zwischen dem Primärleiter 1 und dem beim Aushärten schrumpfenden t Gie-Sharzisolator 3. Ebenso nimmt die Auskleidung 5 aus gummielastischem Stoff die Schrumpfkräfte des den Eisenkern und die Spule umfassenden Gießharzisolatorteiles auf.The primary conductor @ is sandwiched by the rubber-elastic sheath 2. Surrounded with the cast resin insulator 3. The cast resin insulator 3 has the primary conductor 1 concentrically surrounding recess 4 ,. which the lining 5 made of rubber-elastic Having fabric. In the recess 4 is the iron core 6, which is from the secondary winding 7 is surrounded. arranged, the cover 2 made of elastic material acts as a cushion between the primary conductor 1 and the Gie resin insulator which shrinks during hardening 3. The lining 5 made of elastic material also takes the shrinkage forces of the cast resin insulator part comprising the iron core and the coil.

2 Figuren 2 Ansprüche 2 figures 2 claims

Claims (1)

Schutzansprüche ---------------
1. Stabwandler mit Gießharzisolator, dadurch gekennzeichnet, daß der Primärleiter unter Zwischenlage einer gummielastischen Hülle mit einem Gießharzisolator umgeben ist, in dessen den Primärleiter konzentrisch umgebender Ausnehmung der Eisenkern mit der ihn umgebenden Sekundärwicklung unter Auskleidung der Isolatorausnehmung mit einer gummielastischen Schicht angeordnet ist. 2. Stabwandler nach Anspruch 1, dadurch gekennzeichnet, daß der gummielastische Stoff mindestens teilweise elektrisch leitender Gummi ist.
Protection claims ---------------
1. Rod transducer with cast resin insulator, characterized in that the primary conductor is surrounded by a rubber-elastic sheath with a cast-resin insulator in between, in whose recess concentrically surrounding the primary conductor the iron core with the surrounding secondary winding is arranged with a rubber-elastic layer lining the insulator recess. 2. rod transducer according to claim 1, characterized in that the Elastic material at least partially electrically conductive Rubber is.
DES27470U 1958-07-02 1958-07-02 ROD CONVERTER WITH CAST RESIN INSULATOR. Expired DE1782776U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DES27470U DE1782776U (en) 1958-07-02 1958-07-02 ROD CONVERTER WITH CAST RESIN INSULATOR.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DES27470U DE1782776U (en) 1958-07-02 1958-07-02 ROD CONVERTER WITH CAST RESIN INSULATOR.

Publications (1)

Publication Number Publication Date
DE1782776U true DE1782776U (en) 1959-02-12

Family

ID=32862650

Family Applications (1)

Application Number Title Priority Date Filing Date
DES27470U Expired DE1782776U (en) 1958-07-02 1958-07-02 ROD CONVERTER WITH CAST RESIN INSULATOR.

Country Status (1)

Country Link
DE (1) DE1782776U (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1097556B (en) * 1959-04-24 1961-01-19 Siemens Ag Rod current transformer with cast resin housing
DE102010004223B4 (en) * 2010-01-08 2013-12-05 Vacuumschmelze Gmbh & Co. Kg Method for producing a current detection device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1097556B (en) * 1959-04-24 1961-01-19 Siemens Ag Rod current transformer with cast resin housing
DE102010004223B4 (en) * 2010-01-08 2013-12-05 Vacuumschmelze Gmbh & Co. Kg Method for producing a current detection device

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