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).
Specification detailing a test procedure for machine insulation.
| Identifier | ExFiles\Box 168a\3\ img093 | |
| Date | 30th May 1938 guessed | |
| 7 -3- SPECIFICATION; ELC.13a. (9) 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 frame, when the lamp should show no signs of being lighted. HM{Capt. W. Hallam - Head Repairs}/KC. | ||