GB1145450A - Method of making conductive coatings on the surface of an encapsulated electrical device - Google Patents

Method of making conductive coatings on the surface of an encapsulated electrical device

Info

Publication number
GB1145450A
GB1145450A GB10632/67A GB1063267A GB1145450A GB 1145450 A GB1145450 A GB 1145450A GB 10632/67 A GB10632/67 A GB 10632/67A GB 1063267 A GB1063267 A GB 1063267A GB 1145450 A GB1145450 A GB 1145450A
Authority
GB
United Kingdom
Prior art keywords
mould
resin
liquid carrier
coating
graphite
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
GB10632/67A
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.)
General Electric Co
Original Assignee
General Electric 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 General Electric Co filed Critical General Electric Co
Publication of GB1145450A publication Critical patent/GB1145450A/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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/34—Special means for preventing or reducing unwanted electric or magnetic effects, e.g. no-load losses, reactive currents, harmonics, oscillations, leakage fields
    • H01F27/36—Electric or magnetic shields or screens
    • H01F27/363—Electric or magnetic shields or screens made of electrically conductive material
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B1/00—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B1/00—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors
    • H01B1/20—Conductive material dispersed in non-conductive organic material
    • H01B1/22—Conductive material dispersed in non-conductive organic material the conductive material comprising metals or alloys
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B1/00—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors
    • H01B1/20—Conductive material dispersed in non-conductive organic material
    • H01B1/24—Conductive material dispersed in non-conductive organic material the conductive material comprising carbon-silicon compounds, carbon or silicon
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/02—Casings
    • H01F27/022—Encapsulation
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/28—Coils; Windings; Conductive connections
    • H01F27/32—Insulating of coils, windings, or parts thereof
    • H01F27/327—Encapsulating or impregnating
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/34—Special means for preventing or reducing unwanted electric or magnetic effects, e.g. no-load losses, reactive currents, harmonics, oscillations, leakage fields
    • H01F27/36—Electric or magnetic shields or screens
    • 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
    • H01F41/005—Impregnating or encapsulating
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Dispersion Chemistry (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)
  • Conductive Materials (AREA)

Abstract

1,145,450. Encapsulating electrical devices. GENERAL ELECTRIC CO. 7 March, 1967 [8 April, 1966], No. 10632/67. Heading B5A. [Also in Divisions B2 and H1] Thermally stable electrically conductive surfaces are provided on an electrical structure, e.g. an encapsulated coil unit comprising high and low voltage coils 20, 22, by coating, e.g. by spraying or brushing, the appropriate mould surfaces, coated with release agent, e.g. silicone oil, with a conductive coating 70 of conductive particles in a liquid carrier, prior to inserting the coils 20, 22 into the mould on plastics spacers 60; the closed mould is then evacuated through opening 68 as encapsulating resin, e.g. epoxy resin, is admitted through opening 66 to fill the mould and which resin is then cured in the sealed mould, e.g. in an oven at 125‹ C. for 16 hours, whereby the coating 70, the liquid carrier whereof preferably incorporates a similar resin to the encapsulating resin, is integrally moulded on to the surface of the encapsulated unit. The liquid carrier may include water or solvents which may be removed by heating the mould prior to moulding. The conducting particles may be pigment or colloidal graphite, carbon black, silver, copper or aluminium. Graphite and acetylene black formulations with alkyd and phenolic varnish, and graphite formulations with water or epoxy resin are specified.
GB10632/67A 1966-04-08 1967-03-07 Method of making conductive coatings on the surface of an encapsulated electrical device Expired GB1145450A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US54133366A 1966-04-08 1966-04-08

Publications (1)

Publication Number Publication Date
GB1145450A true GB1145450A (en) 1969-03-12

Family

ID=24159139

Family Applications (1)

Application Number Title Priority Date Filing Date
GB10632/67A Expired GB1145450A (en) 1966-04-08 1967-03-07 Method of making conductive coatings on the surface of an encapsulated electrical device

Country Status (4)

Country Link
CH (1) CH468706A (en)
DE (1) DE1640214A1 (en)
FR (1) FR1515497A (en)
GB (1) GB1145450A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1589546A1 (en) * 2004-04-22 2005-10-26 Federal-Mogul Ignition Srl Ignition coil having improved thermal stress resistance
DE102012218456A1 (en) * 2012-10-10 2014-04-10 Siemens Aktiengesellschaft Apparatus and method for casting coils
CN105575592A (en) * 2016-02-02 2016-05-11 北京新立机械有限责任公司 Packaging device and method of thin-wall type dry electronic transformer
WO2017140482A1 (en) * 2016-02-17 2017-08-24 Siemens Aktiengesellschaft Compact dry-type transformer comprising an electric winding, and method for manufacturing an electric winding

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3903328A (en) * 1974-04-26 1975-09-02 Ibm Conductive coating
DE3151170A1 (en) * 1981-12-23 1983-06-30 Siemens AG, 1000 Berlin und 8000 München SHIELDED TRANSMITTER EMBEDDED IN INSULATING POWDER FOR AN INSBES. SWITCHING POWER SUPPLY OPERATED AT HIGHER FREQUENCIES, IN PARTICULAR. LOCKING CONVERTER POWER SUPPLY IN A COLOR TELEVISION RECEIVER

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1589546A1 (en) * 2004-04-22 2005-10-26 Federal-Mogul Ignition Srl Ignition coil having improved thermal stress resistance
RU2641669C2 (en) * 2012-10-10 2018-01-19 Сименс Акциенгезелльшафт Method for filling coils and device for its implementation
WO2014056770A1 (en) * 2012-10-10 2014-04-17 Siemens Aktiengesellschaft Device and method for potting coils
CN104781892A (en) * 2012-10-10 2015-07-15 西门子公司 Device and method for potting coils
US20150279558A1 (en) * 2012-10-10 2015-10-01 Siemens Aktiengesellschaft Device and method for potting coils
JP2015534732A (en) * 2012-10-10 2015-12-03 シーメンス アクチエンゲゼルシヤフトＳｉｅｍｅｎｓ Ａｋｔｉｅｎｇｅｓｅｌｌｓｃｈａｆｔ Coil potting apparatus and method
DE102012218456A1 (en) * 2012-10-10 2014-04-10 Siemens Aktiengesellschaft Apparatus and method for casting coils
CN105575592A (en) * 2016-02-02 2016-05-11 北京新立机械有限责任公司 Packaging device and method of thin-wall type dry electronic transformer
CN105575592B (en) * 2016-02-02 2017-09-29 北京新立机械有限责任公司 The packaging system and method for a kind of thin wall type dry electronic transformer
WO2017140482A1 (en) * 2016-02-17 2017-08-24 Siemens Aktiengesellschaft Compact dry-type transformer comprising an electric winding, and method for manufacturing an electric winding
CN108701534A (en) * 2016-02-17 2018-10-23 西门子股份公司 Compact dry-type transformer with electrical winding and the method for being used to prepare electrical winding
CN108701534B (en) * 2016-02-17 2021-12-10 西门子能源全球有限公司 Compact dry-type transformer with electrical winding and method for producing an electrical winding
US11569026B2 (en) * 2016-02-17 2023-01-31 Siemens Energy Global GmbH & Co. KG Compact dry-type transformer

Also Published As

Publication number Publication date
CH468706A (en) 1969-02-15
DE1640214A1 (en) 1970-08-13
FR1515497A (en) 1968-03-01

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