DE3561089D1 - Method for manufacturing a low tension coil for transformers - Google Patents

Method for manufacturing a low tension coil for transformers

Info

Publication number
DE3561089D1
DE3561089D1 DE8585105657T DE3561089T DE3561089D1 DE 3561089 D1 DE3561089 D1 DE 3561089D1 DE 8585105657 T DE8585105657 T DE 8585105657T DE 3561089 T DE3561089 T DE 3561089T DE 3561089 D1 DE3561089 D1 DE 3561089D1
Authority
DE
Germany
Prior art keywords
temperature
casting
hardened
transformers
resin
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
DE8585105657T
Other languages
German (de)
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 DE8585105657T priority Critical patent/DE3561089D1/en
Application granted granted Critical
Publication of DE3561089D1 publication Critical patent/DE3561089D1/en
Expired legal-status Critical Current

Links

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

Landscapes

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

Abstract

1. A method of manufacturing low-voltage coils (5) for transformers made of strip material (15) rolled up in a spiral with insulating interlayers (16) ant with a casting (17) made of casting resin on each of the two annular end faces, characterized in that a solvent-free mixture of polyepoxy and polyisocyanate resin, known per se, serves as the casting resin ; that this mixture is hardened within a few minutes of being poured onto each end face by the addition of a reaction accelerator at room temperature, to a self-supporting annular casting (17) which can already be mechanically loaded at room temperature ; that the hardened castings (17) of the same coil (5) are both further hardened simultaneously at 1008C to 1408C, so that they can also by mechanically loaded at elevated temperature ; and that the further hardened castings (17) on the hardening temperature being exceeded in the course of operation by raising of the glass transition temperature (glass transformation temperature), harden further without softening.
DE8585105657T 1984-05-21 1985-05-08 Method for manufacturing a low tension coil for transformers Expired DE3561089D1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE8585105657T DE3561089D1 (en) 1984-05-21 1985-05-08 Method for manufacturing a low tension coil for transformers

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3418823 1984-05-21
DE8585105657T DE3561089D1 (en) 1984-05-21 1985-05-08 Method for manufacturing a low tension coil for transformers

Publications (1)

Publication Number Publication Date
DE3561089D1 true DE3561089D1 (en) 1988-01-07

Family

ID=6236421

Family Applications (1)

Application Number Title Priority Date Filing Date
DE8585105657T Expired DE3561089D1 (en) 1984-05-21 1985-05-08 Method for manufacturing a low tension coil for transformers

Country Status (4)

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

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103077820A (en) * 2012-12-31 2013-05-01 湖南广信电工科技有限公司 Production process of coiling type pressure-regulating oblique end ring

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT239369B (en) * 1963-04-11 1965-04-12 Siemens Ag Process for the production of objects, in particular the insulation of electrical machines, devices or apparatus, by casting or impregnating with material systems capable of polymerization or polyaddition reactions
DE1540133A1 (en) * 1965-12-21 1969-12-11 Licentia Gmbh Use of an insulating material composed of two strips for the production of winding insulation, in particular of high-voltage coils
JPS54157201A (en) * 1978-06-02 1979-12-12 Hitachi Ltd Wire manufacturing method for electric machine
DE3323154A1 (en) * 1983-06-27 1985-01-03 Siemens AG, 1000 Berlin und 8000 München METHOD FOR IMPREGNATING AND EMBEDDING ELECTRICAL WINDINGS

Also Published As

Publication number Publication date
BR8502366A (en) 1986-01-21
ATE31126T1 (en) 1987-12-15
EP0165435A1 (en) 1985-12-27
EP0165435B1 (en) 1987-11-25

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8320 Willingness to grant licences declared (paragraph 23)
8339 Ceased/non-payment of the annual fee