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).
Instructions for examining and testing a machine's armature, bearings, and insulation.
| Identifier | ExFiles\Box 51\1\ Scan355 | |
| Date | 15th May 1928 guessed | |
| -3- Contd. (8) Examine also for rubbing armature, slack bearings, cracked insulation, etc. (9) The insulation of the machine should be tested shile still hot by applying through a lamp an alternating voltage of 200 between the windings and the frame, when the lamp should show no sign of being lighted. EFC. {E. Fowler Clarke - Electrical Engineer} | ||