GB822507A - Improvements relating to electrical insulating material - Google Patents
Improvements relating to electrical insulating materialInfo
- Publication number
- GB822507A GB822507A GB3856156A GB3856156A GB822507A GB 822507 A GB822507 A GB 822507A GB 3856156 A GB3856156 A GB 3856156A GB 3856156 A GB3856156 A GB 3856156A GB 822507 A GB822507 A GB 822507A
- Authority
- GB
- United Kingdom
- Prior art keywords
- wood
- varnish
- impregnated
- solvent
- insulating material
- 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
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
- H01B3/18—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances
- H01B3/48—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances fibrous materials
- H01B3/485—Other fibrous materials fabric
Landscapes
- Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Manufacture Of Motors, Generators (AREA)
Abstract
822,507. Impregnating wood for electric insulation. BRITISH THOMSON-HOUSTON CO. Ltd. Dec. 17, 1957 [Dec. 18, 1956], No. 38561/56. Class 140. [Also in Group XXXV] Wood is treated to render it satisfactory for use as an electrical insulating material by impregnating it in vacuo with a solution which comprises a tung oil-modified xylenol-formaldehyde resin in a solvent (e.g. xylene) and heating to remove the solvent and harden the varnish. The vacuum-impregnated wood may be subjected to pressure while still immersed in the varnish. The wood may be washed in a solvent to remove superficial varnish, after impregnation but before heating. The wood may be rock maple, birch or beech. Wooden slot wedges for dynamo-electric machines may be impregnated by the method of the invention. In an example such wedges are first impregnated, then washed in xylene and allowed to drain, then fitted into the stator of an induction motor. The whole stator is then immersed in the same type of varnish, withdrawn and baked.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3856156A GB822507A (en) | 1956-12-18 | 1956-12-18 | Improvements relating to electrical insulating material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3856156A GB822507A (en) | 1956-12-18 | 1956-12-18 | Improvements relating to electrical insulating material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB822507A true GB822507A (en) | 1959-10-28 |
Family
ID=10404281
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB3856156A Expired GB822507A (en) | 1956-12-18 | 1956-12-18 | Improvements relating to electrical insulating material |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB822507A (en) |
-
1956
- 1956-12-18 GB GB3856156A patent/GB822507A/en not_active Expired
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| GB1098015A (en) | A process for the impregnation with curable synthetic resin and dimensionally accurate curing of the insulation surrounding stator winding elements of an electric machine | |
| GB822507A (en) | Improvements relating to electrical insulating material | |
| GB1195398A (en) | Improvements in or relating to Electrical Machines | |
| GB843892A (en) | Improvements in or relating to commutators | |
| CH509688A (en) | Process for the production of an electrical machine in which winding conductors are fixed in the stator iron | |
| GB1418777A (en) | Squirrel-cage rotor | |
| SU1376181A1 (en) | Method of impregnating windings of electric machine | |
| GB866595A (en) | Improvements in the electrical insulation of dynamo-electric machine conductor bars | |
| GB823964A (en) | Improvements relating to electric contact brushes | |
| CH304152A (en) | Process for producing partial conductor insulation for slot bars in electrical machines. | |
| JPS6343989B2 (en) | ||
| JPS56101362A (en) | Method of full-inpregnated insulating treatment for coil on electric rotary machine | |
| AT246269B (en) | Process for the production of form-wound coils which are arranged in the slots of a stator or rotor of an electrical machine | |
| SU733065A1 (en) | Method of making coil windings of electric machines | |
| GB998334A (en) | A method of insulating electric conductors or strands of electric conductors | |
| GB752406A (en) | Improvements in and relating to cast-in windings in rotors for dynamo electric machines | |
| JPS566653A (en) | Insulating method for winding of electric machine | |
| GB967235A (en) | Method of pressing and hardening insulated winding coils impregnated with artificial resin | |
| JPS5679407A (en) | Insulation for coil of electric maghine | |
| DE1067901B (en) | Process for the impregnation of high voltage insulation | |
| GB1090086A (en) | Securing the stack of rotor laminations of small electric motors to the associated shaft | |
| JPS552336A (en) | Resin impregnating method of rotary electric machine winding | |
| GB1014676A (en) | Improvements in or relating to the insulation of the windings of electrical machines | |
| ES237075A1 (en) | Procedure to introduce thermal contactors in the rolling of appliances or electrical machines (Machine-translation by Google Translate, not legally binding) | |
| JPS5656142A (en) | Winding of rotary electric machine |