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).
Quality testing of a Maconit chassis H.T. cable following a failure.
| Identifier | ExFiles\Box 168\1\ img079 | |
| Date | 1st October 1928 | |
| X.3860 To EP.{G. Eric Platford - Chief Quality Engineer} from EFC. EFC3/T1.10.28. MACONITE CHASSIS H.T. CABLE. With reference to your query regarding the quality of Maconit H.T. cable, resulting from a case of failure which you showed to me, we have taken a sample length from immediate production for test. The middle of this length was immersed in water for 46 hours, after which it was tested at 18900 volts R.M.S., i.e. 26700 volts peak, for 15 minutes without failure. It would appear that there can be no doubt that the fault experienced must have been the result of some mechanical damage to the cable in the first instance. EFC. | ||