GB654637A - Improvements in or relating to a method of providing electrical articles with insulating varnish - Google Patents

Improvements in or relating to a method of providing electrical articles with insulating varnish

Info

Publication number
GB654637A
GB654637A GB2257/47A GB225747A GB654637A GB 654637 A GB654637 A GB 654637A GB 2257/47 A GB2257/47 A GB 2257/47A GB 225747 A GB225747 A GB 225747A GB 654637 A GB654637 A GB 654637A
Authority
GB
United Kingdom
Prior art keywords
varnish
article
solvent
baking
relating
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
GB2257/47A
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.)
STERLING VARNISH Co
Original Assignee
STERLING VARNISH Co
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 STERLING VARNISH Co filed Critical STERLING VARNISH Co
Publication of GB654637A publication Critical patent/GB654637A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K15/00—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
    • H02K15/12—Impregnating, heating or drying of windings, stators, rotors or machines

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Power Engineering (AREA)
  • Manufacture Of Motors, Generators (AREA)

Abstract

A method of varnishing or impregnating electrical windings, such as windings of rotors or armatures, with insulating varnish which is after the impregnation substantially free from solvent, said varnish having before the completion of the impregnation a varnish base and a solvent, which includes heating the article to be varnished to a temperature at least high enough to evaporate solvent from the varnish, contacting the heated article with said varnish, removing the article and then baking it, and wherein the contact of the article with the varnish is terminated before the latter has cooled to below a temperature at which solvent would not be evaporated. The article may be rotated in contact with the varnish and/or during the baking, and may be rotated slowly through the varnish and after removal from the varnish and before baking, or while it is being heated before the application of the varnish. The varnish may comprise a straight or modified phenol-formaldehyde resin with petroleum naphtha as solvent. Specification 584,445, is referred to.
GB2257/47A 1946-04-02 1947-01-24 Improvements in or relating to a method of providing electrical articles with insulating varnish Expired GB654637A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US654637XA 1946-04-02 1946-04-02

Publications (1)

Publication Number Publication Date
GB654637A true GB654637A (en) 1951-06-27

Family

ID=22062880

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2257/47A Expired GB654637A (en) 1946-04-02 1947-01-24 Improvements in or relating to a method of providing electrical articles with insulating varnish

Country Status (1)

Country Link
GB (1) GB654637A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3806299A1 (en) * 2019-10-11 2021-04-14 Siemens Aktiengesellschaft Insulation of a coil winding of an active part of an electric machine
RU2790179C1 (en) * 2019-10-11 2023-02-15 Сименс Акциенгезелльшафт Isolation of the coil winding of the active part of the electric machine

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3806299A1 (en) * 2019-10-11 2021-04-14 Siemens Aktiengesellschaft Insulation of a coil winding of an active part of an electric machine
WO2021069138A1 (en) * 2019-10-11 2021-04-15 Siemens Aktiengesellschaft Insulating a coil winding of an active part of an electrical machine
CN114586265A (en) * 2019-10-11 2022-06-03 西门子股份公司 Insulation of coil windings of active components of an electrical machine
RU2790179C1 (en) * 2019-10-11 2023-02-15 Сименс Акциенгезелльшафт Isolation of the coil winding of the active part of the electric machine
US11621619B2 (en) 2019-10-11 2023-04-04 Siemens Aktiengesellschaft Insulating a coil winding of an active part of an electrical machine

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