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).
Inspection and insulation testing procedures for an electrical machine.
| Identifier | ExFiles\Box 70\4\ scan0098 | |
| Date | 19th December 1928 guessed | |
| -4- (9) Examine also for rubbing armature, slack bearings, cracked insulation and final condition of commutator and brush surfaces. (10) The insulation of the machine should be tested whilst still hot by applying through a low c.p. 200 volt lamp an alternating voltage of 200 between the windings and the frame, when the lamp should show no sign of being lighted. --- EFC. | ||