From the Rolls-Royce experimental archive: a quarter of a million communications from Rolls-Royce, 1906 to 1960's. Documents from the Sir Henry Royce Memorial Foundation (SHRMF).
Methods to reduce electrical loss in coils and transformers by impregnation and immersion.
| Identifier | WestWitteringFiles\J\November1922\ Scan96 | |
| Date | 20th November 1922 guessed | |
| Contd. -6- EFC./... piping though hitherto we had looked upon this source of loss as quite negligible, as actual experiment has, we consider, demonstrated. (28) It invariably seems to be an advantage to thoroughly impregnate a coil with paraffin wax. This necessarily stops brushing effects, and in large transformers we believe a tremendous amount of loss is overcome by immersion in oil. EFC. | ||