GB845780A - Improvements in or relating to methods of encapsulating electrical devices - Google Patents

Improvements in or relating to methods of encapsulating electrical devices

Info

Publication number
GB845780A
GB845780A GB3480457A GB3480457A GB845780A GB 845780 A GB845780 A GB 845780A GB 3480457 A GB3480457 A GB 3480457A GB 3480457 A GB3480457 A GB 3480457A GB 845780 A GB845780 A GB 845780A
Authority
GB
United Kingdom
Prior art keywords
resin
container
absorbent mass
nov
framework
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
GB3480457A
Inventor
George Bell
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 PLC
Original Assignee
General Electric Co PLC
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 PLC filed Critical General Electric Co PLC
Priority to GB3480457A priority Critical patent/GB845780A/en
Publication of GB845780A publication Critical patent/GB845780A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B3/00—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties
    • H01B3/002—Inhomogeneous material in general
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B3/00—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties
    • H01B3/002—Inhomogeneous material in general
    • H01B3/006—Other inhomogeneous material
    • 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
    • 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

Landscapes

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

Abstract

845,780. Impregnating for electrical insulation. GENERAL ELECTRIC CO. Ltd. Nov. 7, 1958 [Nov. 7, 1957], No. 34804/57. Drawings to Specification. Class 140. [Also in Group XXXV] A method of encapsulating at least part of an electrical device, e.g. a transformer or a choke, includes the steps of surrounding the said part of the device with a granular absorbent mass of material, allowing the material to absorb a thermosetting (including cold-setting) synthetic resin, which is then liquid, and causing or allow-' ing the resin to set. The device may be mounted within a container which partially encloses it and the absorbent mass of material may fill the voids between the device and the container. The container may comprise a metallic, e.g. brass, framework upon which is wound a tape, e.g. a glass cloth tape, to form the walls of the container. If the device includes a ferro-magnetic core, this core may be spaced from the framework by a shim or shims of resilient material, e.g. rubber. The pressure acting on the absorbent mass of material may be reduced below atmospheric before and during the introduction of the resin, and increased to at least atmospheric and may be higher during at least part of the period when absorption of the resin by the absorbent mass is taking place. The material of the absorbent mass may be an inorganic material, e.g. quartz or silica, in finely-divided form. The resin may be an epoxy resin.
GB3480457A 1957-11-07 1957-11-07 Improvements in or relating to methods of encapsulating electrical devices Expired GB845780A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3480457A GB845780A (en) 1957-11-07 1957-11-07 Improvements in or relating to methods of encapsulating electrical devices

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3480457A GB845780A (en) 1957-11-07 1957-11-07 Improvements in or relating to methods of encapsulating electrical devices

Publications (1)

Publication Number Publication Date
GB845780A true GB845780A (en) 1960-08-24

Family

ID=10370125

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3480457A Expired GB845780A (en) 1957-11-07 1957-11-07 Improvements in or relating to methods of encapsulating electrical devices

Country Status (1)

Country Link
GB (1) GB845780A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0249827A1 (en) * 1986-06-13 1987-12-23 BBC Brown Boveri AG Electric apparatus and method of making the same
EP0485341A1 (en) * 1990-11-07 1992-05-13 Technology Ag Aspro Small transformer, and process for manufacturing same

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0249827A1 (en) * 1986-06-13 1987-12-23 BBC Brown Boveri AG Electric apparatus and method of making the same
EP0485341A1 (en) * 1990-11-07 1992-05-13 Technology Ag Aspro Small transformer, and process for manufacturing same
US5483405A (en) * 1990-11-07 1996-01-09 Kaelin; Ruedi Mini-transformer with molded cover and retention structure
US5577316A (en) * 1990-11-07 1996-11-26 Aspro Technology Ag Method for producing a mini-transformer with molded cover and retention structure

Similar Documents

Publication Publication Date Title
GB943578A (en) Insulating devices and apparatus and methods for constructing the same
GB845780A (en) Improvements in or relating to methods of encapsulating electrical devices
GB994369A (en) Improvements in and relating to dynamo-electric machines
GB902341A (en) A method of insulating electrical components
JPS5610075A (en) Super-conductive coil and method of assembling the same
JPS52147703A (en) Manufacturing electromagnetic devices
JPS52140543A (en) Method for bonding ropes made of kevlar-reinforced plastics
GB814832A (en) Improvements in or relating to electrical apparatus having a winding on a core
GB771934A (en) Improvements in and relating to insulated electrical apparatus
CA582589A (en) Curing agents for epoxy resins
JPS55141716A (en) Method for molding reactor
GB823376A (en) Improvements in or relating to electrical devices including encased ferro-magnetic cores, and methods of manufacture thereof
GB937191A (en) Improvements relating to electrical insulators and their manufacture
GB815853A (en) Improvements relating to electrical insulation bushing assemblies
JPS6476744A (en) Resin sealed semiconductor device
CA630016A (en) Curing epoxy resinous material with an aliphatic diamine
AU236938B2 (en) Process for curing epoxy resins
CA577824A (en) Method of curing siloxane resins
AU5038559A (en) Improved curing method for polydiolefin resin
CA575418A (en) Curing epoxy resins
AU231691B2 (en) Curing epoxy resins
CA586873A (en) Curing of epoxy resins using diaminodiphenyl sulfones
AU4774359A (en) Process for curing epoxy resins
GB828738A (en) Improvements in or relating to encapsulated electrical components
JPS57207312A (en) Molded electric equipment