EP0165435B1 - Procédé de fabrication d'un enroulement basse tension pour transformateurs - Google Patents

Procédé de fabrication d'un enroulement basse tension pour transformateurs Download PDF

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Publication number
EP0165435B1
EP0165435B1 EP85105657A EP85105657A EP0165435B1 EP 0165435 B1 EP0165435 B1 EP 0165435B1 EP 85105657 A EP85105657 A EP 85105657A EP 85105657 A EP85105657 A EP 85105657A EP 0165435 B1 EP0165435 B1 EP 0165435B1
Authority
EP
European Patent Office
Prior art keywords
temperature
casting
hardened
castings
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
EP85105657A
Other languages
German (de)
English (en)
Other versions
EP0165435A1 (fr
Inventor
Wolfgang Ing.-Grad. Bendel
Klaus Dr. Dipl.-Chem. Kretzschmar
Helmut Dr. Dipl.-Chem. Markert
Wolfgang Dr. Dipl.-Chem. Rogler
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 AT85105657T priority Critical patent/ATE31126T1/de
Publication of EP0165435A1 publication Critical patent/EP0165435A1/fr
Application granted granted Critical
Publication of EP0165435B1 publication Critical patent/EP0165435B1/fr
Expired legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
    • H01F41/02—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets
    • H01F41/04—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets for manufacturing coils
    • H01F41/12—Insulating of windings
    • H01F41/127—Encapsulating or impregnating

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Insulating Of Coils (AREA)

Claims (4)

1. Procédé de fabrication d'enroulements basse tension (5) en un matériau en forme de ruban (15) enroulé en spirale avec des couches intermédiaires isolantes (16) et ayantune pièce rapportée par coulée (17) en résine de coulée sur chacune des deux surfaces frontales annulaires, caractérisé en ce qu'il consiste:
- à se servir comme résine de coulée d'un mélange exempt de solvant, en soi connu, de résines de polyépoxyde et de résines de polyisocyanate,
- à commencer à durcir ce mélange, par addition d'un accélérateur de réaction à la température ambiante et en quelques minutes après la coulée sur les surfaces frontales, en une pièce rapportée par coulée annulaire déjà susceptible de supporter une charge mécanique,
- à durcir complètement les pièces de coulée (17) du même enroulement (5) simultanément entre 100°C et 140° C de manière qu'elles puissent supporter une contrainte même à une température élevée, et - à post-durcir sans ramollissement les pièces rapportées par coulée (17) durcies complètement en dépassant, au cours du fonctionnement, par élévation du point de transition à l'état vitreux (température de transformation en verre), les températures de durcissement complet.
2. Procédé suivant la revendication 1, caractérisé en ce qu'il consiste à utiliser, comme accélérateur de réaction, une N,N-diméthylbenzylamine (DMBA).
3. Procédé suivant la revendication 1 ou 2, caractérisé en ce qu'il consiste à laisser encore l'enroulement (5) sur le support d'enroulement pendant la coulée des pièces rapportées par coulée (17) et à effectuer le post-durcissement entre 100°C et 140°C, mais seulement après avoir enlevé l'enroulement (5) de son support.
4. Procédé suivant l'une des revendications 1 à 3, caractérisé en ce qu'il consiste à dépasser la température de durcissement complet par un échauffement effectué à des fins de vérification, ou par une surcharge intentionnelle du transformateur, et à élever ainsi le point de transition à l'état vitreux.
EP85105657A 1984-05-21 1985-05-08 Procédé de fabrication d'un enroulement basse tension pour transformateurs Expired EP0165435B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT85105657T ATE31126T1 (de) 1984-05-21 1985-05-08 Verfahren zur herstellung einer unterspannungswicklung fuer transformatoren.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3418823 1984-05-21
DE3418823 1984-05-21

Publications (2)

Publication Number Publication Date
EP0165435A1 EP0165435A1 (fr) 1985-12-27
EP0165435B1 true EP0165435B1 (fr) 1987-11-25

Family

ID=6236421

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85105657A Expired EP0165435B1 (fr) 1984-05-21 1985-05-08 Procédé de fabrication d'un enroulement basse tension pour transformateurs

Country Status (4)

Country Link
EP (1) EP0165435B1 (fr)
AT (1) ATE31126T1 (fr)
BR (1) BR8502366A (fr)
DE (1) DE3561089D1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103077820A (zh) * 2012-12-31 2013-05-01 湖南广信电工科技有限公司 卷制式调压斜端圈生产工艺

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT239369B (de) * 1963-04-11 1965-04-12 Siemens Ag Verfahren zur Herstellung von Gegenständen, insbesondere von Isolierungen elektrischer Maschinen, Geräte oder Apparate, durch Vergießen oder Imprägnieren mit zur Polymerisations- oder Polyadditionsreaktion fähigen Stoffsystemen
DE1540133A1 (de) * 1965-12-21 1969-12-11 Licentia Gmbh Verwendung eines aus zwei Baendern zusammengesetzten Isoliermaterials fuer die Herstellung einer Wicklungsisolation,insbesondere von Hochspannungsspulen
JPS54157201A (en) * 1978-06-02 1979-12-12 Hitachi Ltd Wire manufacturing method for electric machine
DE3323154A1 (de) * 1983-06-27 1985-01-03 Siemens AG, 1000 Berlin und 8000 München Verfahren zur impraegnierung und einbettung von elektrischen wicklungen

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103077820A (zh) * 2012-12-31 2013-05-01 湖南广信电工科技有限公司 卷制式调压斜端圈生产工艺

Also Published As

Publication number Publication date
EP0165435A1 (fr) 1985-12-27
BR8502366A (pt) 1986-01-21
ATE31126T1 (de) 1987-12-15
DE3561089D1 (en) 1988-01-07

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